ref: d0e510b29af9a1d12a507f03f352b6d39adc0ace
dir: /sys/src/9/omap/mouse.c/
#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; static char mouseport[5]; 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. */ static void ps2mouseputc(int c, int shift) { static short msg[4]; static int nb; static uchar b[] = {0, 1, 4, 5, 2, 3, 6, 7, 0, 1, 2, 3, 2, 3, 6, 7 }; static ulong lasttick; ulong m; int buttons, dx, dy; shift |= mouseshifted; m = MACHP(0)->ticks; if(TK2SEC(m - lasttick) > 2) nb = 0; lasttick = m; if(nb==0 && (c&0xc8)!=0x08) if(intellimouse && (c==0x00 || c==0x01 || c==0xFF)){ packetsize = 4; return; } msg[nb] = c; if(++nb >= packetsize){ nb = 0; if(msg[0] & 0x10) msg[1] |= 0xFF00; if(msg[0] & 0x20) msg[2] |= 0xFF00; buttons = b[(msg[0]&7) | (shift ? 8 : 0)]; if(intellimouse && packetsize==4){ if((msg[3]&0xc8) == 0x08){ packetsize = 3; msg[0] = msg[3]; nb = 1; }else{ if((msg[3] >> 3) & 1) buttons |= 1<<3; else if(msg[3] & 0x7) buttons |= 1<<4; } } dx = msg[1]; dy = -msg[2]; mousetrack(dx, dy, buttons, TK2MS(MACHP(0)->ticks)); } } /* * set up a ps2 mouse */ static void ps2mouse(void) { if(mousetype == MousePS2) return; mousetype = MousePS2; packetsize = 3; mousehwaccel = 1; // i8042auxenable(ps2mouseputc); // i8042auxcmd(0xEA); // TODO // i8042auxcmd(0xF4); } /* * 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; mouseaccelerate(x); } static void setlinear(void) { accelerated = 0; mouseaccelerate(0); } static void setres(int n) { resolution = n; } static void setintellimouse(void) { intellimouse = 1; packetsize = 4; } static void resetmouse(void) { packetsize = 3; } void mousectl(Cmdbuf *cb) { 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; break; case CMps2intellimouse: 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 CMserial: error("serial mice not supported"); 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(); }