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
144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
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#define _SYSTEM 1
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#include <minix/callnr.h>
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#include <minix/com.h>
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#include <minix/config.h>
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#include <minix/const.h>
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#include <minix/ds.h>
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#include <minix/endpoint.h>
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#include <minix/minlib.h>
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#include <minix/type.h>
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#include <minix/ipc.h>
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#include <minix/sysutil.h>
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#include <minix/syslib.h>
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#include <minix/bitmap.h>
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#include <errno.h>
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#include <assert.h>
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#include <env.h>
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#include "glo.h"
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#include "proto.h"
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#include "util.h"
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#include "sanitycheck.h"
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static void reset_vm_rusage(struct vmproc *vmp)
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{
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vmp->vm_total = 0;
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vmp->vm_total_max = 0;
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vmp->vm_minor_page_fault = 0;
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vmp->vm_major_page_fault = 0;
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}
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void free_proc(struct vmproc *vmp)
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{
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map_free_proc(vmp);
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pt_free(&vmp->vm_pt);
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region_init(&vmp->vm_regions_avl);
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#if VMSTATS
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vmp->vm_bytecopies = 0;
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#endif
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vmp->vm_region_top = 0;
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reset_vm_rusage(vmp);
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}
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void clear_proc(struct vmproc *vmp)
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{
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region_init(&vmp->vm_regions_avl);
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acl_clear(vmp);
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vmp->vm_flags = 0; /* Clear INUSE, so slot is free. */
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#if VMSTATS
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vmp->vm_bytecopies = 0;
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#endif
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vmp->vm_region_top = 0;
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reset_vm_rusage(vmp);
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}
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/*===========================================================================*
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* do_exit *
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*===========================================================================*/
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int do_exit(message *msg)
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{
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int proc;
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struct vmproc *vmp;
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SANITYCHECK(SCL_FUNCTIONS);
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if(vm_isokendpt(msg->VME_ENDPOINT, &proc) != OK) {
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printf("VM: bogus endpoint VM_EXIT %d\n", msg->VME_ENDPOINT);
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return EINVAL;
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}
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vmp = &vmproc[proc];
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if(!(vmp->vm_flags & VMF_EXITING)) {
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printf("VM: unannounced VM_EXIT %d\n", msg->VME_ENDPOINT);
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return EINVAL;
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}
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{
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/* Free pagetable and pages allocated by pt code. */
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SANITYCHECK(SCL_DETAIL);
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free_proc(vmp);
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SANITYCHECK(SCL_DETAIL);
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}
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SANITYCHECK(SCL_DETAIL);
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/* Reset process slot fields. */
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clear_proc(vmp);
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SANITYCHECK(SCL_FUNCTIONS);
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return OK;
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}
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/*===========================================================================*
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* do_willexit *
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*===========================================================================*/
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int do_willexit(message *msg)
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{
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int proc;
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struct vmproc *vmp;
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if(vm_isokendpt(msg->VMWE_ENDPOINT, &proc) != OK) {
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printf("VM: bogus endpoint VM_EXITING %d\n",
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msg->VMWE_ENDPOINT);
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return EINVAL;
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}
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vmp = &vmproc[proc];
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vmp->vm_flags |= VMF_EXITING;
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return OK;
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}
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int do_procctl(message *msg)
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{
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endpoint_t proc;
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struct vmproc *vmp;
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if(vm_isokendpt(msg->VMPCTL_WHO, &proc) != OK) {
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printf("VM: bogus endpoint VM_PROCCTL %d\n",
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msg->VMPCTL_WHO);
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return EINVAL;
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}
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vmp = &vmproc[proc];
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switch(msg->VMPCTL_PARAM) {
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case VMPPARAM_CLEAR:
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if(msg->m_source != RS_PROC_NR
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&& msg->m_source != VFS_PROC_NR)
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return EPERM;
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free_proc(vmp);
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if(pt_new(&vmp->vm_pt) != OK)
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panic("VMPPARAM_CLEAR: pt_new failed");
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pt_bind(&vmp->vm_pt, vmp);
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return OK;
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default:
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return EINVAL;
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}
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return OK;
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}
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