6b3f4dc157
This commit separates the low-level keyboard driver from TTY, putting it in a separate driver (PCKBD). The commit also separates management of raw input devices from TTY, and puts it in a separate server (INPUT). All keyboard and mouse input from hardware is sent by drivers to the INPUT server, which either sends it to a process that has opened a raw input device, or otherwise forwards it to TTY for standard processing. Design by Dirk Vogt. Prototype by Uli Kastlunger. Additional changes made to the prototype: - the event communication is now based on USB HID codes; all input drivers have to use USB codes to describe events; - all TTY keymaps have been converted to USB format, with the effect that a single keymap covers all keys; there is no (static) escaped keymap anymore; - further keymap tweaks now allow remapping of literally all keys; - input device renumbering and protocol rewrite; - INPUT server rewrite, with added support for cancel and select; - PCKBD reimplementation, including PC/AT-to-USB translation; - support for manipulating keyboard LEDs has been added; - keyboard and mouse multiplexer devices have been added to INPUT, primarily so that an X server need only open two devices; - a new "libinputdriver" library abstracts away protocol details from input drivers, and should be used by all future input drivers; - both INPUT and PCKBD can be restarted; - TTY is now scheduled by KERNEL, so that it won't be punished for running a lot; without this, simply running "yes" on the console kills the system; - the KIOCBELL IOCTL has been moved to /dev/console; - support for the SCANCODES termios setting has been removed; - obsolete keymap compression has been removed; - the obsolete Olivetti M24 keymap has been removed. Change-Id: I3a672fb8c4fd566734e4b46d3994b4b7fc96d578
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
#ifndef _DRIVERS_PCKBD_H
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#define _DRIVERS_PCKBD_H
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/* Standard and AT keyboard. (PS/2 MCA implies AT throughout.) */
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#define KEYBD 0x60 /* I/O port for keyboard data */
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/* AT keyboard. */
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#define KB_COMMAND 0x64 /* I/O port for commands on AT */
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#define KB_STATUS 0x64 /* I/O port for status on AT */
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#define KB_ACK 0xFA /* keyboard ack response */
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#define KB_AUX_BYTE 0x20 /* Auxiliary Device Output Buffer Full */
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#define KB_OUT_FULL 0x01 /* status bit set when keypress char pending */
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#define KB_IN_FULL 0x02 /* status bit set when not ready to receive */
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#define KBC_RD_RAM_CCB 0x20 /* Read controller command byte */
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#define KBC_WR_RAM_CCB 0x60 /* Write controller command byte */
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#define KBC_DI_AUX 0xA7 /* Disable Auxiliary Device */
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#define KBC_EN_AUX 0xA8 /* Enable Auxiliary Device */
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#define KBC_DI_KBD 0xAD /* Disable Keybard Interface */
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#define KBC_EN_KBD 0xAE /* Enable Keybard Interface */
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#define LED_CODE 0xED /* command to keyboard to set LEDs */
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#define KBC_WAIT_TIME 100000 /* wait this many usecs for a status update */
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#define KBC_READ_TIME 1000000 /* wait this many usecs for a result byte */
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#define KBC_IN_DELAY 7 /* wait 7 microseconds when polling */
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#define KBD_OUT_BUFSZ 16 /* Output buffer for data to the keyboard. */
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#define KBD_SCAN_CODES 0x80
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#define SCAN_RELEASE 0x80
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#define SCAN_CTRL 0x1D
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#define SCAN_NUMLOCK 0x45
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#define SCAN_EXT0 0xE0
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#define SCAN_EXT1 0xE1
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#define LED_SCROLL_LOCK 0x01
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#define LED_NUM_LOCK 0x02
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#define LED_CAPS_LOCK 0x04
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struct scanmap {
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unsigned short page;
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unsigned short code;
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};
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extern const struct scanmap scanmap_normal[KBD_SCAN_CODES];
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extern const struct scanmap scanmap_escaped[KBD_SCAN_CODES];
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#endif /* !_DRIVERS_PCKBD_H */
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