diff options
Diffstat (limited to 'EdkModulePkg/Bus/Usb/UsbKb/Dxe/keyboard.c')
| -rw-r--r-- | EdkModulePkg/Bus/Usb/UsbKb/Dxe/keyboard.c | 1150 |
1 files changed, 0 insertions, 1150 deletions
diff --git a/EdkModulePkg/Bus/Usb/UsbKb/Dxe/keyboard.c b/EdkModulePkg/Bus/Usb/UsbKb/Dxe/keyboard.c deleted file mode 100644 index d81a976fb0..0000000000 --- a/EdkModulePkg/Bus/Usb/UsbKb/Dxe/keyboard.c +++ /dev/null @@ -1,1150 +0,0 @@ -/*++
-
-Copyright (c) 2006, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
-
- Keyboard.c
-
-Abstract:
-
- Helper functions for USB Keyboard Driver
-
-Revision History
-
---*/
-
-#include "keyboard.h"
-
-//
-// USB Key Code to Efi key mapping table
-// Format:<efi scan code>, <unicode without shift>, <unicode with shift>
-//
-STATIC
-UINT8 KeyConvertionTable[USB_KEYCODE_MAX_MAKE][3] = {
- { SCAN_NULL, 'a', 'A' }, // 0x04
- { SCAN_NULL, 'b', 'B' }, // 0x05
- { SCAN_NULL, 'c', 'C' }, // 0x06
- { SCAN_NULL, 'd', 'D' }, // 0x07
- { SCAN_NULL, 'e', 'E' }, // 0x08
- { SCAN_NULL, 'f', 'F' }, // 0x09
- { SCAN_NULL, 'g', 'G' }, // 0x0A
- { SCAN_NULL, 'h', 'H' }, // 0x0B
- { SCAN_NULL, 'i', 'I' }, // 0x0C
- { SCAN_NULL, 'j', 'J' }, // 0x0D
- { SCAN_NULL, 'k', 'K' }, // 0x0E
- { SCAN_NULL, 'l', 'L' }, // 0x0F
- { SCAN_NULL, 'm', 'M' }, // 0x10
- { SCAN_NULL, 'n', 'N' }, // 0x11
- { SCAN_NULL, 'o', 'O' }, // 0x12
- { SCAN_NULL, 'p', 'P' }, // 0x13
- { SCAN_NULL, 'q', 'Q' }, // 0x14
- { SCAN_NULL, 'r', 'R' }, // 0x15
- { SCAN_NULL, 's', 'S' }, // 0x16
- { SCAN_NULL, 't', 'T' }, // 0x17
- { SCAN_NULL, 'u', 'U' }, // 0x18
- { SCAN_NULL, 'v', 'V' }, // 0x19
- { SCAN_NULL, 'w', 'W' }, // 0x1A
- { SCAN_NULL, 'x', 'X' }, // 0x1B
- { SCAN_NULL, 'y', 'Y' }, // 0x1C
- { SCAN_NULL, 'z', 'Z' }, // 0x1D
- { SCAN_NULL, '1', '!' }, // 0x1E
- { SCAN_NULL, '2', '@' }, // 0x1F
- { SCAN_NULL, '3', '#' }, // 0x20
- { SCAN_NULL, '4', '$' }, // 0x21
- { SCAN_NULL, '5', '%' }, // 0x22
- { SCAN_NULL, '6', '^' }, // 0x23
- { SCAN_NULL, '7', '&' }, // 0x24
- { SCAN_NULL, '8', '*' }, // 0x25
- { SCAN_NULL, '9', '(' }, // 0x26
- { SCAN_NULL, '0', ')' }, // 0x27
- { SCAN_NULL, 0x0d, 0x0d }, // 0x28 Enter
- { SCAN_ESC, 0x00, 0x00 }, // 0x29 Esc
- { SCAN_NULL, 0x08, 0x08 }, // 0x2A Backspace
- { SCAN_NULL, 0x09, 0x09 }, // 0x2B Tab
- { SCAN_NULL, ' ', ' ' }, // 0x2C Spacebar
- { SCAN_NULL, '-', '_' }, // 0x2D
- { SCAN_NULL, '=', '+' }, // 0x2E
- { SCAN_NULL, '[', '{' }, // 0x2F
- { SCAN_NULL, ']', '}' }, // 0x30
- { SCAN_NULL, '\\', '|' }, // 0x31
- { SCAN_NULL, '\\', '|' }, // 0x32 Keyboard US \ and |
- { SCAN_NULL, ';', ':' }, // 0x33
- { SCAN_NULL, '\'', '"' }, // 0x34
- { SCAN_NULL, '`', '~' }, // 0x35 Keyboard Grave Accent and Tlide
- { SCAN_NULL, ',', '<' }, // 0x36
- { SCAN_NULL, '.', '>' }, // 0x37
- { SCAN_NULL, '/', '?' }, // 0x38
- { SCAN_NULL, 0x00, 0x00 }, // 0x39 CapsLock
- { SCAN_F1, 0x00, 0x00 }, // 0x3A
- { SCAN_F2, 0x00, 0x00 }, // 0x3B
- { SCAN_F3, 0x00, 0x00 }, // 0x3C
- { SCAN_F4, 0x00, 0x00 }, // 0x3D
- { SCAN_F5, 0x00, 0x00 }, // 0x3E
- { SCAN_F6, 0x00, 0x00 }, // 0x3F
- { SCAN_F7, 0x00, 0x00 }, // 0x40
- { SCAN_F8, 0x00, 0x00 }, // 0x41
- { SCAN_F9, 0x00, 0x00 }, // 0x42
- { SCAN_F10, 0x00, 0x00 }, // 0x43
- { SCAN_F11, 0x00, 0x00 }, // 0x44 F11
- { SCAN_F12, 0x00, 0x00 }, // 0x45 F12
- { SCAN_NULL, 0x00, 0x00 }, // 0x46 PrintScreen
- { SCAN_NULL, 0x00, 0x00 }, // 0x47 Scroll Lock
- { SCAN_NULL, 0x00, 0x00 }, // 0x48 Pause
- { SCAN_INSERT, 0x00, 0x00 }, // 0x49
- { SCAN_HOME, 0x00, 0x00 }, // 0x4A
- { SCAN_PAGE_UP, 0x00, 0x00 }, // 0x4B
- { SCAN_DELETE, 0x00, 0x00 }, // 0x4C
- { SCAN_END, 0x00, 0x00 }, // 0x4D
- { SCAN_PAGE_DOWN, 0x00, 0x00 }, // 0x4E
- { SCAN_RIGHT, 0x00, 0x00 }, // 0x4F
- { SCAN_LEFT, 0x00, 0x00 }, // 0x50
- { SCAN_DOWN, 0x00, 0x00 }, // 0x51
- { SCAN_UP, 0x00, 0x00 }, // 0x52
- { SCAN_NULL, 0x00, 0x00 }, // 0x53 NumLock
- { SCAN_NULL, '/', '/' }, // 0x54
- { SCAN_NULL, '*', '*' }, // 0x55
- { SCAN_NULL, '-', '-' }, // 0x56
- { SCAN_NULL, '+', '+' }, // 0x57
- { SCAN_NULL, 0x0d, 0x0d }, // 0x58
- { SCAN_END, '1', '1' }, // 0x59
- { SCAN_DOWN, '2', '2' }, // 0x5A
- { SCAN_PAGE_DOWN, '3', '3' }, // 0x5B
- { SCAN_LEFT, '4', '4' }, // 0x5C
- { SCAN_NULL, '5', '5' }, // 0x5D
- { SCAN_RIGHT, '6', '6' }, // 0x5E
- { SCAN_HOME, '7', '7' }, // 0x5F
- { SCAN_UP, '8', '8' }, // 0x60
- { SCAN_PAGE_UP, '9', '9' }, // 0x61
- { SCAN_INSERT, '0', '0' }, // 0x62
- { SCAN_DELETE, '.', '.' }, // 0x63
- { SCAN_NULL, '\\', '|' }, // 0x64 Keyboard Non-US \ and |
- { SCAN_NULL, 0x00, 0x00 }, // 0x65 Keyboard Application
- { SCAN_NULL, 0x00, 0x00 }, // 0x66 Keyboard Power
- { SCAN_NULL, '=' , '=' } // 0x67 Keypad =
-};
-
-STATIC KB_MODIFIER KB_Mod[8] = {
- { MOD_CONTROL_L, 0xe0 }, // 11100000
- { MOD_CONTROL_R, 0xe4 }, // 11100100
- { MOD_SHIFT_L, 0xe1 }, // 11100001
- { MOD_SHIFT_R, 0xe5 }, // 11100101
- { MOD_ALT_L, 0xe2 }, // 11100010
- { MOD_ALT_R, 0xe6 }, // 11100110
- { MOD_WIN_L, 0xe3 }, // 11100011
- { MOD_WIN_R, 0xe7 } // 11100111
-};
-
-
-BOOLEAN
-IsUSBKeyboard (
- IN EFI_USB_IO_PROTOCOL *UsbIo
- )
-/*++
-
- Routine Description:
- Uses USB I/O to check whether the device is a USB Keyboard device.
-
- Arguments:
- UsbIo: Points to a USB I/O protocol instance.
-
- Returns:
-
---*/
-{
- EFI_STATUS Status;
- EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
-
- //
- // Get the Default interface descriptor, currently we
- // assume it is interface 1
- //
- Status = UsbIo->UsbGetInterfaceDescriptor (
- UsbIo,
- &InterfaceDescriptor
- );
-
- if (EFI_ERROR (Status)) {
- return FALSE;
- }
-
- if (InterfaceDescriptor.InterfaceClass == CLASS_HID &&
- InterfaceDescriptor.InterfaceSubClass == SUBCLASS_BOOT &&
- InterfaceDescriptor.InterfaceProtocol == PROTOCOL_KEYBOARD
- ) {
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-
-EFI_STATUS
-InitUSBKeyboard (
- IN USB_KB_DEV *UsbKeyboardDevice
- )
-/*++
-
- Routine Description:
- Initialize USB Keyboard device and all private data structures.
-
- Arguments:
- UsbKeyboardDevice The USB_KB_DEV instance.
-
- Returns:
- EFI_SUCCESS - Success
- EFI_DEVICE_ERROR - Hardware Error
---*/
-{
- UINT8 ConfigValue;
- UINT8 Protocol;
- UINT8 ReportId;
- UINT8 Duration;
- EFI_STATUS Status;
- UINT32 TransferResult;
-
- KbdReportStatusCode (
- UsbKeyboardDevice->DevicePath,
- EFI_PROGRESS_CODE,
- (EFI_PERIPHERAL_KEYBOARD | EFI_P_KEYBOARD_PC_SELF_TEST)
- );
-
- InitUSBKeyBuffer (&(UsbKeyboardDevice->KeyboardBuffer));
-
- //
- // default configurations
- //
- ConfigValue = 0x01;
-
- //
- // Uses default configuration to configure the USB Keyboard device.
- //
- Status = UsbSetDeviceConfiguration (
- UsbKeyboardDevice->UsbIo,
- (UINT16) ConfigValue,
- &TransferResult
- );
- if (EFI_ERROR (Status)) {
- //
- // If configuration could not be set here, it means
- // the keyboard interface has some errors and could
- // not be initialized
- //
- KbdReportStatusCode (
- UsbKeyboardDevice->DevicePath,
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- (EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_INTERFACE_ERROR)
- );
-
- return EFI_DEVICE_ERROR;
- }
-
- UsbGetProtocolRequest (
- UsbKeyboardDevice->UsbIo,
- UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,
- &Protocol
- );
- //
- // Sets boot protocol for the USB Keyboard.
- // This driver only supports boot protocol.
- // !!BugBug: How about the device that does not support boot protocol?
- //
- if (Protocol != BOOT_PROTOCOL) {
- UsbSetProtocolRequest (
- UsbKeyboardDevice->UsbIo,
- UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,
- BOOT_PROTOCOL
- );
- }
- //
- // the duration is indefinite, so the endpoint will inhibit reporting forever,
- // and only reporting when a change is detected in the report data.
- //
-
- //
- // idle value for all report ID
- //
- ReportId = 0;
- //
- // idle forever until there is a key pressed and released.
- //
- Duration = 0;
- UsbSetIdleRequest (
- UsbKeyboardDevice->UsbIo,
- UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,
- ReportId,
- Duration
- );
-
- UsbKeyboardDevice->CtrlOn = 0;
- UsbKeyboardDevice->AltOn = 0;
- UsbKeyboardDevice->ShiftOn = 0;
- UsbKeyboardDevice->NumLockOn = 0;
- UsbKeyboardDevice->CapsOn = 0;
- UsbKeyboardDevice->ScrollOn = 0;
- ZeroMem (UsbKeyboardDevice->LastKeyCodeArray, sizeof (UINT8) * 8);
-
- //
- // Set a timer for repeat keys' generation.
- //
- if (UsbKeyboardDevice->RepeatTimer) {
- gBS->CloseEvent (UsbKeyboardDevice->RepeatTimer);
- UsbKeyboardDevice->RepeatTimer = 0;
- }
-
- Status = gBS->CreateEvent (
- EVT_TIMER | EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- USBKeyboardRepeatHandler,
- UsbKeyboardDevice,
- &UsbKeyboardDevice->RepeatTimer
- );
-
- if (UsbKeyboardDevice->DelayedRecoveryEvent) {
- gBS->CloseEvent (UsbKeyboardDevice->DelayedRecoveryEvent);
- UsbKeyboardDevice->DelayedRecoveryEvent = 0;
- }
-
- Status = gBS->CreateEvent (
- EVT_TIMER | EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- USBKeyboardRecoveryHandler,
- UsbKeyboardDevice,
- &UsbKeyboardDevice->DelayedRecoveryEvent
- );
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-KeyboardHandler (
- IN VOID *Data,
- IN UINTN DataLength,
- IN VOID *Context,
- IN UINT32 Result
- )
-/*++
-
- Routine Description:
- Handler function for USB Keyboard's asynchronous interrupt transfer.
-
- Arguments:
- Data A pointer to a buffer that is filled with key data which is
- retrieved via asynchronous interrupt transfer.
- DataLength Indicates the size of the data buffer.
- Context Pointing to USB_KB_DEV instance.
- Result Indicates the result of the asynchronous interrupt transfer.
-
- Returns:
- EFI_SUCCESS - Success
- EFI_DEVICE_ERROR - Hardware Error
---*/
-{
- USB_KB_DEV *UsbKeyboardDevice;
- EFI_USB_IO_PROTOCOL *UsbIo;
- UINT8 *CurKeyCodeBuffer;
- UINT8 *OldKeyCodeBuffer;
- UINT8 CurModifierMap;
- UINT8 OldModifierMap;
- UINT8 Index;
- UINT8 Index2;
- BOOLEAN Down;
- BOOLEAN KeyRelease;
- BOOLEAN KeyPress;
- UINT8 SavedTail;
- USB_KEY UsbKey;
- UINT8 NewRepeatKey;
- UINT32 UsbStatus;
-
- ASSERT (Context);
-
- NewRepeatKey = 0;
- UsbKeyboardDevice = (USB_KB_DEV *) Context;
- UsbIo = UsbKeyboardDevice->UsbIo;
-
- //
- // Analyzes the Result and performs corresponding action.
- //
- if (Result != EFI_USB_NOERROR) {
- //
- // Some errors happen during the process
- //
- KbdReportStatusCode (
- UsbKeyboardDevice->DevicePath,
- EFI_ERROR_CODE | EFI_ERROR_MINOR,
- (EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_INPUT_ERROR)
- );
-
- //
- // stop the repeat key generation if any
- //
- UsbKeyboardDevice->RepeatKey = 0;
-
- gBS->SetTimer (
- UsbKeyboardDevice->RepeatTimer,
- TimerCancel,
- USBKBD_REPEAT_RATE
- );
-
- if ((Result & EFI_USB_ERR_STALL) == EFI_USB_ERR_STALL) {
- UsbClearEndpointHalt (
- UsbIo,
- UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,
- &UsbStatus
- );
- }
-
- //
- // Delete & Submit this interrupt again
- //
-
- UsbIo->UsbAsyncInterruptTransfer (
- UsbIo,
- UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,
- FALSE,
- 0,
- 0,
- NULL,
- NULL
- );
-
- gBS->SetTimer (
- UsbKeyboardDevice->DelayedRecoveryEvent,
- TimerRelative,
- EFI_USB_INTERRUPT_DELAY
- );
-
- return EFI_DEVICE_ERROR;
- }
-
- if (DataLength == 0 || Data == NULL) {
- return EFI_SUCCESS;
- }
-
- CurKeyCodeBuffer = (UINT8 *) Data;
- OldKeyCodeBuffer = UsbKeyboardDevice->LastKeyCodeArray;
-
- //
- // checks for new key stroke.
- // if no new key got, return immediately.
- //
- for (Index = 0; Index < 8; Index++) {
- if (OldKeyCodeBuffer[Index] != CurKeyCodeBuffer[Index]) {
- break;
- }
- }
-
- if (Index == 8) {
- return EFI_SUCCESS;
- }
-
- //
- // Parse the modifier key
- //
- CurModifierMap = CurKeyCodeBuffer[0];
- OldModifierMap = OldKeyCodeBuffer[0];
-
- //
- // handle modifier key's pressing or releasing situation.
- //
- for (Index = 0; Index < 8; Index++) {
-
- if ((CurModifierMap & KB_Mod[Index].Mask) != (OldModifierMap & KB_Mod[Index].Mask)) {
- //
- // if current modifier key is up, then
- // CurModifierMap & KB_Mod[Index].Mask = 0;
- // otherwize it is a non-zero value.
- // Inserts the pressed modifier key into key buffer.
- //
- Down = (UINT8) (CurModifierMap & KB_Mod[Index].Mask);
- InsertKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), KB_Mod[Index].Key, Down);
- }
- }
-
- //
- // handle normal key's releasing situation
- //
- KeyRelease = FALSE;
- for (Index = 2; Index < 8; Index++) {
-
- if (!USBKBD_VALID_KEYCODE (OldKeyCodeBuffer[Index])) {
- continue;
- }
-
- KeyRelease = TRUE;
- for (Index2 = 2; Index2 < 8; Index2++) {
-
- if (!USBKBD_VALID_KEYCODE (CurKeyCodeBuffer[Index2])) {
- continue;
- }
-
- if (OldKeyCodeBuffer[Index] == CurKeyCodeBuffer[Index2]) {
- KeyRelease = FALSE;
- break;
- }
- }
-
- if (KeyRelease) {
- InsertKeyCode (
- &(UsbKeyboardDevice->KeyboardBuffer),
- OldKeyCodeBuffer[Index],
- 0
- );
- //
- // the original reapeat key is released.
- //
- if (OldKeyCodeBuffer[Index] == UsbKeyboardDevice->RepeatKey) {
- UsbKeyboardDevice->RepeatKey = 0;
- }
- }
- }
-
- //
- // original repeat key is released, cancel the repeat timer
- //
- if (UsbKeyboardDevice->RepeatKey == 0) {
- gBS->SetTimer (
- UsbKeyboardDevice->RepeatTimer,
- TimerCancel,
- USBKBD_REPEAT_RATE
- );
- }
-
- //
- // handle normal key's pressing situation
- //
- KeyPress = FALSE;
- for (Index = 2; Index < 8; Index++) {
-
- if (!USBKBD_VALID_KEYCODE (CurKeyCodeBuffer[Index])) {
- continue;
- }
-
- KeyPress = TRUE;
- for (Index2 = 2; Index2 < 8; Index2++) {
-
- if (!USBKBD_VALID_KEYCODE (OldKeyCodeBuffer[Index2])) {
- continue;
- }
-
- if (CurKeyCodeBuffer[Index] == OldKeyCodeBuffer[Index2]) {
- KeyPress = FALSE;
- break;
- }
- }
-
- if (KeyPress) {
- InsertKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), CurKeyCodeBuffer[Index], 1);
- //
- // NumLock pressed or CapsLock pressed
- //
- if (CurKeyCodeBuffer[Index] == 0x53 || CurKeyCodeBuffer[Index] == 0x39) {
- UsbKeyboardDevice->RepeatKey = 0;
- } else {
- NewRepeatKey = CurKeyCodeBuffer[Index];
- //
- // do not repeat the original repeated key
- //
- UsbKeyboardDevice->RepeatKey = 0;
- }
- }
- }
-
- //
- // Update LastKeycodeArray[] buffer in the
- // Usb Keyboard Device data structure.
- //
- for (Index = 0; Index < 8; Index++) {
- UsbKeyboardDevice->LastKeyCodeArray[Index] = CurKeyCodeBuffer[Index];
- }
-
- //
- // pre-process KeyboardBuffer, pop out the ctrl,alt,del key in sequence
- // and judge whether it will invoke reset event.
- //
- SavedTail = UsbKeyboardDevice->KeyboardBuffer.bTail;
- Index = UsbKeyboardDevice->KeyboardBuffer.bHead;
- while (Index != SavedTail) {
- RemoveKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), &UsbKey);
-
- switch (UsbKey.KeyCode) {
-
- case 0xe0:
- case 0xe4:
- if (UsbKey.Down) {
- UsbKeyboardDevice->CtrlOn = 1;
- } else {
- UsbKeyboardDevice->CtrlOn = 0;
- }
- break;
-
- case 0xe2:
- case 0xe6:
- if (UsbKey.Down) {
- UsbKeyboardDevice->AltOn = 1;
- } else {
- UsbKeyboardDevice->AltOn = 0;
- }
- break;
-
- //
- // Del Key Code
- //
- case 0x4c:
- case 0x63:
- if (UsbKey.Down) {
- if (UsbKeyboardDevice->CtrlOn && UsbKeyboardDevice->AltOn) {
- gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
- }
- }
- break;
-
- default:
- break;
- }
-
- //
- // insert the key back to the buffer.
- // so the key sequence will not be destroyed.
- //
- InsertKeyCode (
- &(UsbKeyboardDevice->KeyboardBuffer),
- UsbKey.KeyCode,
- UsbKey.Down
- );
- Index = UsbKeyboardDevice->KeyboardBuffer.bHead;
-
- }
- //
- // If have new key pressed, update the RepeatKey value, and set the
- // timer to repeate delay timer
- //
- if (NewRepeatKey != 0) {
- //
- // sets trigger time to "Repeat Delay Time",
- // to trigger the repeat timer when the key is hold long
- // enough time.
- //
- gBS->SetTimer (
- UsbKeyboardDevice->RepeatTimer,
- TimerRelative,
- USBKBD_REPEAT_DELAY
- );
- UsbKeyboardDevice->RepeatKey = NewRepeatKey;
- }
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-USBParseKey (
- IN OUT USB_KB_DEV *UsbKeyboardDevice,
- OUT UINT8 *KeyChar
- )
-/*++
-
- Routine Description:
- Retrieves a key character after parsing the raw data in keyboard buffer.
-
- Arguments:
- UsbKeyboardDevice The USB_KB_DEV instance.
- KeyChar Points to the Key character after key parsing.
-
- Returns:
- EFI_SUCCESS - Success
- EFI_NOT_READY - Device is not ready
---*/
-{
- USB_KEY UsbKey;
-
- *KeyChar = 0;
-
- while (!IsUSBKeyboardBufferEmpty (&UsbKeyboardDevice->KeyboardBuffer)) {
- //
- // pops one raw data off.
- //
- RemoveKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), &UsbKey);
-
- if (!UsbKey.Down) {
- switch (UsbKey.KeyCode) {
-
- case 0xe0:
- case 0xe4:
- UsbKeyboardDevice->CtrlOn = 0;
- break;
-
- case 0xe1:
- case 0xe5:
- UsbKeyboardDevice->ShiftOn = 0;
- break;
-
- case 0xe2:
- case 0xe6:
- UsbKeyboardDevice->AltOn = 0;
- break;
-
- default:
- break;
- }
-
- continue;
- }
-
- //
- // Analyzes key pressing situation
- //
- switch (UsbKey.KeyCode) {
-
- case 0xe0:
- case 0xe4:
- UsbKeyboardDevice->CtrlOn = 1;
- continue;
- break;
-
- case 0xe1:
- case 0xe5:
- UsbKeyboardDevice->ShiftOn = 1;
- continue;
- break;
-
- case 0xe2:
- case 0xe6:
- UsbKeyboardDevice->AltOn = 1;
- continue;
- break;
-
- case 0xe3:
- case 0xe7:
- continue;
- break;
-
- case 0x53:
- UsbKeyboardDevice->NumLockOn ^= 1;
- SetKeyLED (UsbKeyboardDevice);
- continue;
- break;
-
- case 0x39:
- UsbKeyboardDevice->CapsOn ^= 1;
- SetKeyLED (UsbKeyboardDevice);
- continue;
- break;
-
- //
- // F11,F12,PrintScreen,ScrollLock,Pause,Application,Power
- // keys are not valid EFI key
- //
- case 0x44:
- //
- // fall through
- //
- case 0x45:
- //
- // fall through
- //
- case 0x46:
- //
- // fall through
- //
- case 0x47:
- //
- // Turn on the ScrollLock light on KB
- //
- UsbKeyboardDevice->ScrollOn ^= 1;
- SetKeyLED (UsbKeyboardDevice);
- continue;
- break;
- case 0x48:
- //
- // fall through
- //
- case 0x65:
- case 0x66:
- continue;
- break;
-
- default:
- break;
- }
-
- //
- // When encountered Del Key...
- //
- if (UsbKey.KeyCode == 0x4c || UsbKey.KeyCode == 0x63) {
- if (UsbKeyboardDevice->CtrlOn && UsbKeyboardDevice->AltOn) {
- gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
- }
- }
-
- *KeyChar = UsbKey.KeyCode;
- return EFI_SUCCESS;
- }
-
- return EFI_NOT_READY;
-
-}
-
-
-EFI_STATUS
-USBKeyCodeToEFIScanCode (
- IN USB_KB_DEV *UsbKeyboardDevice,
- IN UINT8 KeyChar,
- OUT EFI_INPUT_KEY *Key
- )
-/*++
-
- Routine Description:
- Converts USB Keyboard code to EFI Scan Code.
-
- Arguments:
- UsbKeyboardDevice The USB_KB_DEV instance.
- KeyChar Indicates the key code that will be interpreted.
- Key A pointer to a buffer that is filled in with
- the keystroke information for the key that
- was pressed.
- Returns:
- EFI_NOT_READY - Device is not ready
- EFI_SUCCESS - Success
---*/
-{
- UINT8 Index;
-
- if (!USBKBD_VALID_KEYCODE (KeyChar)) {
- return EFI_NOT_READY;
- }
-
- //
- // valid USB Key Code starts from 4
- //
- Index = (UINT8) (KeyChar - 4);
-
- if (Index >= USB_KEYCODE_MAX_MAKE) {
- return EFI_NOT_READY;
- }
-
- Key->ScanCode = KeyConvertionTable[Index][0];
-
- if (UsbKeyboardDevice->ShiftOn) {
-
- Key->UnicodeChar = KeyConvertionTable[Index][2];
-
- } else {
-
- Key->UnicodeChar = KeyConvertionTable[Index][1];
- }
-
- if (UsbKeyboardDevice->CapsOn) {
-
- if (Key->UnicodeChar >= 'a' && Key->UnicodeChar <= 'z') {
-
- Key->UnicodeChar = KeyConvertionTable[Index][2];
-
- } else if (Key->UnicodeChar >= 'A' && Key->UnicodeChar <= 'Z') {
-
- Key->UnicodeChar = KeyConvertionTable[Index][1];
-
- }
- }
-
- if (KeyChar >= 0x59 && KeyChar <= 0x63) {
-
- if (UsbKeyboardDevice->NumLockOn && !UsbKeyboardDevice->ShiftOn) {
-
- Key->ScanCode = SCAN_NULL;
-
- } else {
-
- Key->UnicodeChar = 0x00;
- }
- }
-
- if (Key->UnicodeChar == 0 && Key->ScanCode == SCAN_NULL) {
- return EFI_NOT_READY;
- }
-
- return EFI_SUCCESS;
-
-}
-
-
-EFI_STATUS
-InitUSBKeyBuffer (
- IN OUT USB_KB_BUFFER *KeyboardBuffer
- )
-/*++
-
- Routine Description:
- Resets USB Keyboard Buffer.
-
- Arguments:
- KeyboardBuffer - Points to the USB Keyboard Buffer.
-
- Returns:
- EFI_SUCCESS - Success
---*/
-{
- ZeroMem (KeyboardBuffer, sizeof (USB_KB_BUFFER));
-
- KeyboardBuffer->bHead = KeyboardBuffer->bTail;
-
- return EFI_SUCCESS;
-}
-
-BOOLEAN
-IsUSBKeyboardBufferEmpty (
- IN USB_KB_BUFFER *KeyboardBuffer
- )
-/*++
-
- Routine Description:
- Check whether USB Keyboard buffer is empty.
-
- Arguments:
- KeyboardBuffer - USB Keyboard Buffer.
-
- Returns:
-
---*/
-{
- //
- // meet FIFO empty condition
- //
- return (BOOLEAN) (KeyboardBuffer->bHead == KeyboardBuffer->bTail);
-}
-
-
-BOOLEAN
-IsUSBKeyboardBufferFull (
- IN USB_KB_BUFFER *KeyboardBuffer
- )
-/*++
-
- Routine Description:
- Check whether USB Keyboard buffer is full.
-
- Arguments:
- KeyboardBuffer - USB Keyboard Buffer.
-
- Returns:
-
---*/
-{
- return (BOOLEAN)(((KeyboardBuffer->bTail + 1) % (MAX_KEY_ALLOWED + 1)) ==
- KeyboardBuffer->bHead);
-}
-
-
-EFI_STATUS
-InsertKeyCode (
- IN OUT USB_KB_BUFFER *KeyboardBuffer,
- IN UINT8 Key,
- IN UINT8 Down
- )
-/*++
-
- Routine Description:
- Inserts a key code into keyboard buffer.
-
- Arguments:
- KeyboardBuffer - Points to the USB Keyboard Buffer.
- Key - Key code
- Down - Special key
- Returns:
- EFI_SUCCESS - Success
---*/
-{
- USB_KEY UsbKey;
-
- //
- // if keyboard buffer is full, throw the
- // first key out of the keyboard buffer.
- //
- if (IsUSBKeyboardBufferFull (KeyboardBuffer)) {
- RemoveKeyCode (KeyboardBuffer, &UsbKey);
- }
-
- KeyboardBuffer->buffer[KeyboardBuffer->bTail].KeyCode = Key;
- KeyboardBuffer->buffer[KeyboardBuffer->bTail].Down = Down;
-
- //
- // adjust the tail pointer of the FIFO keyboard buffer.
- //
- KeyboardBuffer->bTail = (UINT8) ((KeyboardBuffer->bTail + 1) % (MAX_KEY_ALLOWED + 1));
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-RemoveKeyCode (
- IN OUT USB_KB_BUFFER *KeyboardBuffer,
- OUT USB_KEY *UsbKey
- )
-/*++
-
- Routine Description:
- Pops a key code off from keyboard buffer.
-
- Arguments:
- KeyboardBuffer - Points to the USB Keyboard Buffer.
- UsbKey - Points to the buffer that contains a usb key code.
-
- Returns:
- EFI_SUCCESS - Success
- EFI_DEVICE_ERROR - Hardware Error
---*/
-{
- if (IsUSBKeyboardBufferEmpty (KeyboardBuffer)) {
- return EFI_DEVICE_ERROR;
- }
-
- UsbKey->KeyCode = KeyboardBuffer->buffer[KeyboardBuffer->bHead].KeyCode;
- UsbKey->Down = KeyboardBuffer->buffer[KeyboardBuffer->bHead].Down;
-
- //
- // adjust the head pointer of the FIFO keyboard buffer.
- //
- KeyboardBuffer->bHead = (UINT8) ((KeyboardBuffer->bHead + 1) % (MAX_KEY_ALLOWED + 1));
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-SetKeyLED (
- IN USB_KB_DEV *UsbKeyboardDevice
- )
-/*++
-
- Routine Description:
- Sets USB Keyboard LED state.
-
- Arguments:
- UsbKeyboardDevice - The USB_KB_DEV instance.
-
- Returns:
- EFI_SUCCESS - Success
---*/
-{
- LED_MAP Led;
- UINT8 ReportId;
-
- //
- // Set each field in Led map.
- //
- Led.NumLock = (UINT8) UsbKeyboardDevice->NumLockOn;
- Led.CapsLock = (UINT8) UsbKeyboardDevice->CapsOn;
- Led.ScrollLock = (UINT8) UsbKeyboardDevice->ScrollOn;
- Led.Resrvd = 0;
-
- ReportId = 0;
- //
- // call Set Report Request to lighten the LED.
- //
- UsbSetReportRequest (
- UsbKeyboardDevice->UsbIo,
- UsbKeyboardDevice->InterfaceDescriptor.InterfaceNumber,
- ReportId,
- HID_OUTPUT_REPORT,
- 1,
- (UINT8 *) &Led
- );
-
- return EFI_SUCCESS;
-}
-
-VOID
-EFIAPI
-USBKeyboardRepeatHandler (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-/*++
-
- Routine Description:
- Timer handler for Repeat Key timer.
-
- Arguments:
- Event - The Repeat Key event.
- Context - Points to the USB_KB_DEV instance.
-
- Returns:
-
---*/
-{
- USB_KB_DEV *UsbKeyboardDevice;
-
- UsbKeyboardDevice = (USB_KB_DEV *) Context;
-
- //
- // Do nothing when there is no repeat key.
- //
- if (UsbKeyboardDevice->RepeatKey != 0) {
- //
- // Inserts one Repeat key into keyboard buffer,
- //
- InsertKeyCode (
- &(UsbKeyboardDevice->KeyboardBuffer),
- UsbKeyboardDevice->RepeatKey,
- 1
- );
-
- //
- // set repeate rate for repeat key generation.
- //
- gBS->SetTimer (
- UsbKeyboardDevice->RepeatTimer,
- TimerRelative,
- USBKBD_REPEAT_RATE
- );
-
- }
-}
-
-VOID
-EFIAPI
-USBKeyboardRecoveryHandler (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-/*++
-
- Routine Description:
- Timer handler for Delayed Recovery timer.
-
- Arguments:
- Event - The Delayed Recovery event.
- Context - Points to the USB_KB_DEV instance.
-
- Returns:
-
---*/
-{
-
- USB_KB_DEV *UsbKeyboardDevice;
- EFI_USB_IO_PROTOCOL *UsbIo;
- UINT8 PacketSize;
-
- UsbKeyboardDevice = (USB_KB_DEV *) Context;
-
- UsbIo = UsbKeyboardDevice->UsbIo;
-
- PacketSize = (UINT8) (UsbKeyboardDevice->IntEndpointDescriptor.MaxPacketSize);
-
- UsbIo->UsbAsyncInterruptTransfer (
- UsbIo,
- UsbKeyboardDevice->IntEndpointDescriptor.EndpointAddress,
- TRUE,
- UsbKeyboardDevice->IntEndpointDescriptor.Interval,
- PacketSize,
- KeyboardHandler,
- UsbKeyboardDevice
- );
-}
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