PS2 Mouse Communication Interface.\r
\r
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
-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
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "Ps2Mouse.h"\r
#include "CommPs2.h"\r
\r
-UINT8 SampleRateTbl[MaxSampleRate] = { 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
+UINT8 ResolutionTbl[MaxResolution] = { 0, 1, 2, 3 };\r
\r
/**\r
Issue self test command via IsaIo interface.\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Read return code\r
//\r
if (Data != 0x55) {\r
return EFI_DEVICE_ERROR;\r
}\r
+\r
//\r
// Set system flag\r
//\r
return Status;\r
}\r
\r
- Data |= CMD_SYS_FLAG;\r
+ Data |= CMD_SYS_FLAG;\r
Status = Out8042Data (Data);\r
if (EFI_ERROR (Status)) {\r
return Status;\r
**/\r
EFI_STATUS\r
CheckKbStatus (\r
- OUT BOOLEAN *KeyboardEnable\r
+ OUT BOOLEAN *KeyboardEnable\r
)\r
{\r
EFI_STATUS Status;\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Check keyboard enable or not\r
//\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Check BAT Complete Code\r
//\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Check BAT Complete Code\r
//\r
**/\r
EFI_STATUS\r
PS2MouseSetSampleRate (\r
- IN MOUSE_SR SampleRate\r
+ IN MOUSE_SR SampleRate\r
)\r
{\r
EFI_STATUS Status;\r
**/\r
EFI_STATUS\r
PS2MouseSetResolution (\r
- IN MOUSE_RE Resolution\r
+ IN MOUSE_RE Resolution\r
)\r
{\r
EFI_STATUS Status;\r
**/\r
EFI_STATUS\r
PS2MouseSetScaling (\r
- IN MOUSE_SF Scaling\r
+ IN MOUSE_SF Scaling\r
)\r
{\r
//\r
**/\r
EFI_STATUS\r
PS2MouseGetPacket (\r
- PS2_MOUSE_DEV *MouseDev\r
+ PS2_MOUSE_DEV *MouseDev\r
)\r
\r
{\r
BOOLEAN LButton;\r
BOOLEAN RButton;\r
\r
- KeyboardEnable = FALSE;\r
- State = PS2_READ_BYTE_ONE;\r
+ KeyboardEnable = FALSE;\r
+ State = PS2_READ_BYTE_ONE;\r
\r
//\r
// State machine to get mouse packet\r
//\r
while (1) {\r
-\r
switch (State) {\r
- case PS2_READ_BYTE_ONE:\r
- //\r
- // Read mouse first byte data, if failed, immediately return\r
- //\r
- KbcDisableAux ();\r
- Count = 1;\r
- Status = PS2MouseRead (&Data, &Count, State);\r
- if (EFI_ERROR (Status)) {\r
- KbcEnableAux ();\r
- return EFI_NOT_READY;\r
- }\r
-\r
- if (Count != 1) {\r
- KbcEnableAux ();\r
- return EFI_NOT_READY;\r
- }\r
-\r
- if (IS_PS2_SYNC_BYTE (Data)) {\r
- Packet[0] = Data;\r
- State = PS2_READ_DATA_BYTE;\r
-\r
- CheckKbStatus (&KeyboardEnable);\r
- KbcDisableKb ();\r
- KbcEnableAux ();\r
- }\r
- break;\r
+ case PS2_READ_BYTE_ONE:\r
+ //\r
+ // Read mouse first byte data, if failed, immediately return\r
+ //\r
+ KbcDisableAux ();\r
+ Count = 1;\r
+ Status = PS2MouseRead (&Data, &Count, State);\r
+ if (EFI_ERROR (Status)) {\r
+ KbcEnableAux ();\r
+ return EFI_NOT_READY;\r
+ }\r
\r
- case PS2_READ_DATA_BYTE:\r
- Count = 2;\r
- Status = PS2MouseRead ((Packet + 1), &Count, State);\r
- if (EFI_ERROR (Status)) {\r
- if (KeyboardEnable) {\r
- KbcEnableKb ();\r
+ if (Count != 1) {\r
+ KbcEnableAux ();\r
+ return EFI_NOT_READY;\r
+ }\r
+\r
+ if (IS_PS2_SYNC_BYTE (Data)) {\r
+ Packet[0] = Data;\r
+ State = PS2_READ_DATA_BYTE;\r
+\r
+ CheckKbStatus (&KeyboardEnable);\r
+ KbcDisableKb ();\r
+ KbcEnableAux ();\r
+ }\r
+\r
+ break;\r
+\r
+ case PS2_READ_DATA_BYTE:\r
+ Count = 2;\r
+ Status = PS2MouseRead ((Packet + 1), &Count, State);\r
+ if (EFI_ERROR (Status)) {\r
+ if (KeyboardEnable) {\r
+ KbcEnableKb ();\r
+ }\r
+\r
+ return EFI_NOT_READY;\r
+ }\r
+\r
+ if (Count != 2) {\r
+ if (KeyboardEnable) {\r
+ KbcEnableKb ();\r
+ }\r
+\r
+ return EFI_NOT_READY;\r
}\r
\r
- return EFI_NOT_READY;\r
- }\r
+ State = PS2_PROCESS_PACKET;\r
+ break;\r
\r
- if (Count != 2) {\r
+ case PS2_PROCESS_PACKET:\r
if (KeyboardEnable) {\r
KbcEnableKb ();\r
}\r
\r
- return EFI_NOT_READY;\r
- }\r
+ //\r
+ // Decode the packet\r
+ //\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
+ // 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
+ //\r
+ // Second, if the 9-bit signed twos complement integer is negative, set the high 8 bit 0xff\r
+ //\r
+ if ((Packet[0] & 0x10) != 0) {\r
+ RelativeMovementX = (INT16)(RelativeMovementX | 0xFF00);\r
+ }\r
\r
- State = PS2_PROCESS_PACKET;\r
- break;\r
+ if ((Packet[0] & 0x20) != 0) {\r
+ RelativeMovementY = (INT16)(RelativeMovementY | 0xFF00);\r
+ }\r
+\r
+ RButton = (UINT8)(Packet[0] & 0x2);\r
+ LButton = (UINT8)(Packet[0] & 0x1);\r
+\r
+ //\r
+ // Update mouse state\r
+ //\r
+ MouseDev->State.RelativeMovementX += RelativeMovementX;\r
+ MouseDev->State.RelativeMovementY -= RelativeMovementY;\r
+ MouseDev->State.RightButton = (UINT8)(RButton ? TRUE : FALSE);\r
+ MouseDev->State.LeftButton = (UINT8)(LButton ? TRUE : FALSE);\r
+ MouseDev->StateChanged = TRUE;\r
\r
- case PS2_PROCESS_PACKET:\r
- if (KeyboardEnable) {\r
- KbcEnableKb ();\r
- }\r
- //\r
- // Decode the packet\r
- //\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
- // 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
- //\r
- // Second, if the 9-bit signed twos complement integer is negative, set the high 8 bit 0xff\r
- //\r
- if ((Packet[0] & 0x10) != 0) {\r
- RelativeMovementX = (INT16) (RelativeMovementX | 0xFF00);\r
- }\r
- if ((Packet[0] & 0x20) != 0) {\r
- RelativeMovementY = (INT16) (RelativeMovementY | 0xFF00);\r
- }\r
-\r
-\r
- RButton = (UINT8) (Packet[0] & 0x2);\r
- LButton = (UINT8) (Packet[0] & 0x1);\r
-\r
- //\r
- // Update mouse state\r
- //\r
- MouseDev->State.RelativeMovementX += RelativeMovementX;\r
- MouseDev->State.RelativeMovementY -= RelativeMovementY;\r
- MouseDev->State.RightButton = (UINT8) (RButton ? TRUE : FALSE);\r
- MouseDev->State.LeftButton = (UINT8) (LButton ? TRUE : FALSE);\r
- MouseDev->StateChanged = TRUE;\r
-\r
- return EFI_SUCCESS;\r
+ return EFI_SUCCESS;\r
}\r
}\r
}\r
**/\r
EFI_STATUS\r
PS2MouseRead (\r
- OUT UINT8 *Buffer,\r
- IN OUT UINTN *BufSize,\r
- IN UINTN State\r
+ OUT UINT8 *Buffer,\r
+ IN OUT UINTN *BufSize,\r
+ IN UINTN State\r
)\r
{\r
EFI_STATUS Status;\r
UINTN BytesRead;\r
\r
- Status = EFI_SUCCESS;\r
+ Status = EFI_SUCCESS;\r
\r
if (State == PS2_READ_BYTE_ONE) {\r
//\r
}\r
\r
for (BytesRead = 0; BytesRead < *BufSize; BytesRead++) {\r
-\r
Status = WaitOutputFull (TIMEOUT);\r
if (EFI_ERROR (Status)) {\r
break;\r
}\r
+\r
Buffer[BytesRead] = IoRead8 (KBC_DATA_PORT);\r
}\r
+\r
//\r
// Verify the correct number of bytes read\r
//\r
- if (BytesRead == 0 || BytesRead != *BufSize) {\r
+ if ((BytesRead == 0) || (BytesRead != *BufSize)) {\r
Status = EFI_NOT_FOUND;\r
}\r
\r
//\r
// 8042 I/O function\r
//\r
+\r
/**\r
I/O work flow of outing 8042 command.\r
\r
**/\r
EFI_STATUS\r
Out8042Command (\r
- IN UINT8 Command\r
+ IN UINT8 Command\r
)\r
{\r
EFI_STATUS Status;\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Send command\r
//\r
**/\r
EFI_STATUS\r
Out8042Data (\r
- IN UINT8 Data\r
+ IN UINT8 Data\r
)\r
{\r
EFI_STATUS Status;\r
+\r
//\r
// Wait keyboard controller input buffer empty\r
//\r
**/\r
EFI_STATUS\r
In8042Data (\r
- IN OUT UINT8 *Data\r
+ IN OUT UINT8 *Data\r
)\r
{\r
- UINTN Delay;\r
+ UINTN Delay;\r
\r
Delay = TIMEOUT / 50;\r
\r
**/\r
EFI_STATUS\r
Out8042AuxCommand (\r
- IN UINT8 Command,\r
- IN BOOLEAN Resend\r
+ IN UINT8 Command,\r
+ IN BOOLEAN Resend\r
)\r
{\r
EFI_STATUS Status;\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Send write to auxiliary device command\r
//\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Send auxiliary device command\r
//\r
// Receive mouse acknowledge, command send success\r
//\r
return EFI_SUCCESS;\r
-\r
} else if (Resend) {\r
//\r
// Resend fail\r
//\r
return EFI_DEVICE_ERROR;\r
-\r
} else if (Data == PS2_RESEND) {\r
//\r
// Resend command\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
-\r
} else {\r
//\r
// Invalid return code\r
//\r
return EFI_DEVICE_ERROR;\r
-\r
}\r
\r
return EFI_SUCCESS;\r
**/\r
EFI_STATUS\r
Out8042AuxData (\r
- IN UINT8 Data\r
+ IN UINT8 Data\r
)\r
{\r
EFI_STATUS Status;\r
+\r
//\r
// Wait keyboard controller input buffer empty\r
//\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
//\r
// Send write to auxiliary device command\r
//\r
**/\r
EFI_STATUS\r
In8042AuxData (\r
- IN OUT UINT8 *Data\r
+ IN OUT UINT8 *Data\r
)\r
{\r
EFI_STATUS Status;\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
VOID\r
)\r
{\r
- UINT8 Data;\r
+ UINT8 Data;\r
\r
Data = IoRead8 (KBC_CMD_STS_PORT);\r
\r
/**\r
I/O work flow to wait input buffer empty in given time.\r
\r
- @param Timeout Wating time.\r
+ @param Timeout Waiting 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 UINTN Timeout\r
+ IN UINTN Timeout\r
)\r
{\r
- UINTN Delay;\r
- UINT8 Data;\r
+ UINTN Delay;\r
+ UINT8 Data;\r
\r
Delay = Timeout / 50;\r
\r
**/\r
EFI_STATUS\r
WaitOutputFull (\r
- IN UINTN Timeout\r
+ IN UINTN Timeout\r
)\r
{\r
- UINTN Delay;\r
- UINT8 Data;\r
+ UINTN Delay;\r
+ UINT8 Data;\r
\r
Delay = Timeout / 50;\r
\r
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