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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #include "u.h"
- #include "../port/lib.h"
- #include "mem.h"
- #include "dat.h"
- #include "fns.h"
- #include "../port/error.h"
- #include "io.h"
- #define Image IMAGE
- #include <draw.h>
- #include <memdraw.h>
- #include <cursor.h>
- #include "screen.h"
- /*
- * mouse types
- */
- enum
- {
- Mouseother= 0,
- Mouseserial= 1,
- MousePS2= 2,
- };
- extern int mouseshifted;
- static QLock mousectlqlock;
- static int mousetype;
- static int intellimouse;
- static int packetsize;
- static int resolution;
- static int accelerated;
- static int mousehwaccel;
- enum
- {
- CMaccelerated,
- CMhwaccel,
- CMintellimouse,
- CMlinear,
- CMps2,
- CMps2intellimouse,
- CMres,
- CMreset,
- CMserial,
- };
- static Cmdtab mousectlmsg[] =
- {
- CMaccelerated, "accelerated", 0,
- CMhwaccel, "hwaccel", 2,
- CMintellimouse, "intellimouse", 1,
- CMlinear, "linear", 1,
- CMps2, "ps2", 1,
- CMps2intellimouse, "ps2intellimouse", 1,
- CMres, "res", 0,
- CMreset, "reset", 1,
- CMserial, "serial", 0,
- };
- /*
- * ps/2 mouse message is three bytes
- *
- * byte 0 - 0 0 SDY SDX 1 M R L
- * byte 1 - DX
- * byte 2 - DY
- *
- * shift & right button is the same as middle button
- *
- * Intellimouse and AccuPoint with extra buttons deliver
- * byte 3 - 00 or 01 or FF according to extra button state.
- * extra buttons are mapped in this code to buttons 4 and 5.
- * AccuPoint generates repeated events for these buttons;
- * it and Intellimouse generate 'down' events only, so
- * user-level code is required to generate button 'up' events
- * if they are needed by the application.
- * Also on laptops with AccuPoint AND external mouse, the
- * controller may deliver 3 or 4 bytes according to the type
- * of the external mouse; code must adapt.
- *
- * On the NEC Versa series (and perhaps others?) we seem to
- * lose a byte from the packet every once in a while, which
- * means we lose where we are in the instruction stream.
- * To resynchronize, if we get a byte more than two seconds
- * after the previous byte, we assume it's the first in a packet.
- */
- /*
- * set up a ps2 mouse
- */
- static void
- ps2mouse(void)
- {
- if(mousetype == MousePS2)
- return;
- mouseenable();
- /* make mouse streaming, enabled */
- mousecmd(0xEA);
- mousecmd(0xF4);
- mousetype = MousePS2;
- packetsize = 3;
- mousehwaccel = 1;
- }
- /*
- * The PS/2 Trackpoint multiplexor on the IBM Thinkpad T23 ignores
- * acceleration commands. It is supposed to pass them on
- * to the attached device, but my Logitech mouse is simply
- * not behaving any differently. For such devices, we allow
- * the user to use "hwaccel off" to tell us to back off to
- * software acceleration even if we're using the PS/2 port.
- * (Serial mice are always software accelerated.)
- * For more information on the Thinkpad multiplexor, see
- * http://wwwcssrv.almaden.ibm.com/trackpoint/
- */
- static void
- setaccelerated(int x)
- {
- accelerated = x;
- if(mousehwaccel){
- switch(mousetype){
- case MousePS2:
- mousecmd(0xE7);
- return;
- }
- }
- mouseaccelerate(x);
- }
- static void
- setlinear(void)
- {
- accelerated = 0;
- if(mousehwaccel){
- switch(mousetype){
- case MousePS2:
- mousecmd(0xE6);
- return;
- }
- }
- mouseaccelerate(0);
- }
- static void
- setres(int n)
- {
- resolution = n;
- switch(mousetype){
- case MousePS2:
- mousecmd(0xE8);
- mousecmd(n);
- break;
- }
- }
- static void
- setintellimouse(void)
- {
- intellimouse = 1;
- packetsize = 4;
- switch(mousetype){
- case MousePS2:
- mousecmd(0xF3); /* set sample */
- mousecmd(0xC8);
- mousecmd(0xF3); /* set sample */
- mousecmd(0x64);
- mousecmd(0xF3); /* set sample */
- mousecmd(0x50);
- break;
- }
- }
- static void
- resetmouse(void)
- {
- packetsize = 3;
- switch(mousetype){
- case MousePS2:
- mousecmd(0xF6);
- mousecmd(0xEA); /* streaming */
- mousecmd(0xE8); /* set resolution */
- mousecmd(3);
- mousecmd(0xF4); /* enabled */
- break;
- }
- }
- void
- mousectl(Cmdbuf *cb)
- {
- Proc *up = externup();
- Cmdtab *ct;
- qlock(&mousectlqlock);
- if(waserror()){
- qunlock(&mousectlqlock);
- nexterror();
- }
- ct = lookupcmd(cb, mousectlmsg, nelem(mousectlmsg));
- switch(ct->index){
- case CMaccelerated:
- setaccelerated(cb->nf == 1 ? 1 : atoi(cb->f[1]));
- break;
- case CMintellimouse:
- setintellimouse();
- break;
- case CMlinear:
- setlinear();
- break;
- case CMps2:
- intellimouse = 0;
- ps2mouse();
- break;
- case CMps2intellimouse:
- ps2mouse();
- setintellimouse();
- break;
- case CMres:
- if(cb->nf >= 2)
- setres(atoi(cb->f[1]));
- else
- setres(1);
- break;
- case CMreset:
- resetmouse();
- if(accelerated)
- setaccelerated(accelerated);
- if(resolution)
- setres(resolution);
- if(intellimouse)
- setintellimouse();
- break;
- case CMhwaccel:
- if(strcmp(cb->f[1], "on")==0)
- mousehwaccel = 1;
- else if(strcmp(cb->f[1], "off")==0)
- mousehwaccel = 0;
- else
- cmderror(cb, "bad mouse control message");
- }
- qunlock(&mousectlqlock);
- poperror();
- }
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