minix/servers/vm/region.h
David van Moolenbroek 6b3f4dc157 Input infrastructure, INPUT server, PCKBD driver
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
2014-03-01 09:04:55 +01:00

84 lines
1.9 KiB
C

#ifndef _REGION_H
#define _REGION_H 1
#include <minix/callnr.h>
#include <minix/com.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/ds.h>
#include <minix/endpoint.h>
#include <minix/minlib.h>
#include <minix/type.h>
#include <minix/ipc.h>
#include <minix/sysutil.h>
#include <minix/syslib.h>
#include <minix/const.h>
#include "phys_region.h"
#include "memtype.h"
#include "vm.h"
#include "fdref.h"
struct phys_block {
#if SANITYCHECKS
u32_t seencount;
#endif
phys_bytes phys; /* physical memory */
/* first in list of phys_regions that reference this block */
struct phys_region *firstregion;
u8_t refcount; /* Refcount of these pages */
u8_t flags;
};
#define PBF_INCACHE 0x01
typedef struct vir_region {
vir_bytes vaddr; /* virtual address, offset from pagetable */
vir_bytes length; /* length in bytes */
struct phys_region **physblocks;
u16_t flags;
struct vmproc *parent; /* Process that owns this vir_region. */
mem_type_t *def_memtype; /* Default instantiated memory type. */
int remaps;
int id; /* unique id */
union {
phys_bytes phys; /* VR_DIRECT */
struct {
endpoint_t ep;
vir_bytes vaddr;
int id;
} shared;
struct phys_block *pb_cache;
struct {
int inited;
struct fdref *fdref;
u64_t offset;
u16_t clearend;
} file;
} param;
/* AVL fields */
struct vir_region *lower, *higher;
int factor;
} region_t;
/* Mapping flags: */
#define VR_WRITABLE 0x001 /* Process may write here. */
#define VR_PHYS64K 0x004 /* Physical memory must be 64k aligned. */
#define VR_LOWER16MB 0x008
#define VR_LOWER1MB 0x010
#define VR_SHARED 0x040
#define VR_UNINITIALIZED 0x080 /* Do not clear after allocation */
/* Mapping type: */
#define VR_ANON 0x100 /* Memory to be cleared and allocated */
#define VR_DIRECT 0x200 /* Mapped, but not managed by VM */
/* map_page_region flags */
#define MF_PREALLOC 0x01
#endif