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sortix--sortix/sortix/kb/ps2.h

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Thread secured the keyboard driver.
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/*******************************************************************************
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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Thread secured the keyboard driver.
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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This file is part of Sortix.
Sortix is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
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You should have received a copy of the GNU General Public License along with
Sortix. If not, see <http://www.gnu.org/licenses/>.
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
2012-01-07 15:09:01 -05:00
kb/ps2.h
A driver for the PS2 Keyboard.
Thread secured the keyboard driver.
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*******************************************************************************/
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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#ifndef SORTIX_KB_PS2_H
#define SORTIX_KB_PS2_H
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#include <sortix/kernel/kthread.h>
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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#include "../keyboard.h"
namespace Sortix
{
class PS2Keyboard : public Keyboard
{
public:
PS2Keyboard(uint16_t iobase, uint8_t interrupt);
virtual ~PS2Keyboard();
virtual int Read();
virtual size_t GetPending() const;
virtual bool HasPending() const;
virtual void SetOwner(KeyboardOwner* owner, void* user);
public:
void OnInterrupt(CPU::InterruptRegisters* regs);
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void InterruptWork(uint8_t scancode);
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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private:
uint8_t PopScancode();
int DecodeScancode(uint8_t scancode);
void UpdateLEDs(int ledval);
bool PushKey(int key);
int PopKey();
void NotifyOwner();
private:
int* queue;
size_t queuelength;
size_t queueoffset;
size_t queueused;
KeyboardOwner* owner;
void* ownerptr;
uint16_t iobase;
uint8_t interrupt;
bool scancodeescaped;
uint8_t leds;
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mutable kthread_mutex_t kblock;
Refactored the kernel keyboard API, but kept system calls compatible. Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
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};
}
#endif
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