/* $NetBSD: pms.c,v 1.13 1998/01/13 02:10:05 thorpej Exp $ */ /*- * Copyright (c) 1996 D.C. Tsen * Copyright (c) 1994 Charles Hannum. * Copyright (c) 1992, 1993 Erik Forsberg. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the RiscBSD team. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * from:pms.c,v 1.24 1995/12/24 02:30:28 mycroft Exp */ /* * Ported from 386 version of PS/2 mouse driver. * D.C. Tsen */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* mouse commands */ #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ #define PMS_SET_RES 0xe8 /* set resolution */ #define PMS_GET_SCALE 0xe9 /* get scaling factor */ #define PMS_SET_STREAM 0xea /* set streaming mode */ #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ #define PMS_DEV_ENABLE 0xf4 /* mouse on */ #define PMS_DEV_DISABLE 0xf5 /* mouse off */ #define PMS_RESET 0xff /* reset */ #define PMS_CHUNK 128 /* chunk size for read */ #define PMS_BSIZE (20*64) /* buffer size */ /* function prototypes */ void pmswatchdog __P((void *)); void pmsputbuffer __P((struct pms_softc *sc, struct mousebufrec *buf)); static __inline void pms_flush __P((struct pms_softc *sc)); extern struct cfdriver pms_cd; /* pms device driver structure */ #define PMS_DATA 0 #define PMS_CR 1 #define PMS_STATUS 1 #define PMS_CR_ENABLE 0x08 #define PMS_CR_KDATAO 0x02 #define PMS_CR_KCLKO 0x01 #define PMS_ST_TXE 0x80 #define PMS_ST_TXB 0x40 #define PMS_ST_RXF 0x20 #define PMS_ST_RXB 0x10 #define PMS_ST_ENABLE 0x08 #define PMS_ST_RXPARITY 0x04 #define PMS_ST_KDATAI 0x02 #define PMS_ST_KCLKI 0x01 #define PMSUNIT(dev) (minor(dev)) /* * Flush any pending mouse data */ static __inline void pms_flush(sc) struct pms_softc *sc; { int n = 1000; while (n-- && (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & PMS_ST_RXF)) { delay(6); (void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); delay(6); (void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); delay(6); (void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); } } /* * Send a command to the mouse */ static int cmd_mouse(sc, cmd) struct pms_softc * sc; u_char cmd; { int c; int i = 0; int retry = 10; for (i = 0; i < 1000; i++) { if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & PMS_ST_TXE) break; delay(2); } if (i == 1000) printf("Mouse transmit not ready\n"); resend: bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_DATA, cmd); delay(2); c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS); i = 1000; while (i-- && !(c & PMS_ST_RXF)) { delay(1); c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS); } delay(10000); c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); if ((c == 0xFA) || (c == 0xEE)) return(0); if (--retry) { pms_flush(sc); goto resend; } printf("%s: Mouse cmd failed, cmd = %x, status = %x\n", sc->sc_dev.dv_xname, cmd, c); return(1); } /* * initialise the mouse * * * The sets up parts of the softc and then tests the mouse * to make sure it is responding. * It then configures the mouse as required. */ int pmsinit(sc) struct pms_softc *sc; { int i, j; int mid; int id; /* Set up softc */ sc->sc_state = 0; sc->origx = 0; sc->origy = 0; sc->boundx = -4095; sc->boundy = -4095; sc->bounda = 4096; sc->boundb = 4096; /* Enable the mouse */ bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE); i = 0; while ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03) != 0x03) { if (i++ > 10) { printf("Mouse not found, status = <%x>.\n", bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS)); return(0); } pms_flush(sc); delay(2); bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE); } pms_flush(sc); /* * Disable, reset and enable the mouse. */ if (cmd_mouse(sc, PMS_DEV_DISABLE)) return(0); cmd_mouse(sc, PMS_RESET); delay(300000); j = 10; i = 0; while ((mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA)) != 0xAA) { if (++i > 500) { if (--j < 0) { printf("Mouse Reset failed, status = <%x>.\n", mid); return(0); } pms_flush(sc); cmd_mouse(sc, PMS_RESET); i = 0; } delay(100000); } mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); #if 0 cmd_mouse(sc, PMS_SET_RES); cmd_mouse(sc, 3); /* 8 counts/mm */ cmd_mouse(sc, PMS_SET_SCALE21); #endif cmd_mouse(sc, PMS_SET_SAMPLE); cmd_mouse(sc, 40); /* 40 samples/sec */ cmd_mouse(sc, PMS_SET_STREAM); cmd_mouse(sc, PMS_DEV_ENABLE); return(1); } /* * device open routine */ int pmsopen(dev, flag, mode, p) dev_t dev; int flag; int mode; struct proc *p; { int unit = PMSUNIT(dev); struct pms_softc *sc; /* validate the unit and the softc */ if (unit >= pms_cd.cd_ndevs) return ENXIO; sc = pms_cd.cd_devs[unit]; if (!sc) return ENXIO; /* Are we already open ? */ if (sc->sc_state & PMS_OPEN) return EBUSY; /* initialise buffer */ if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) return ENOMEM; /* set up the softc structure */ sc->sc_proc = p; sc->sc_mode = MOUSEMODE_ABS; sc->sc_state |= PMS_OPEN; sc->sc_status = 0; sc->sc_x = sc->sc_y = 0; sc->lastx = -1; sc->lasty = -1; sc->lastb = -1; /* enable interrupts */ sc->sc_intenable(sc, 1); /* install watchdog timeout */ timeout(pmswatchdog, (void *) sc, 30 * hz); return(0); } /* * driver close function */ int pmsclose(dev, flag, mode, p) dev_t dev; int flag; int mode; struct proc *p; { struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)]; /* remove the timeout */ untimeout(pmswatchdog, (void *) sc); /* disable interrupts */ sc->sc_intenable(sc, 0); /* clean up*/ sc->sc_proc = NULL; sc->sc_state &= ~PMS_OPEN; sc->sc_x = sc->sc_y = 0; clfree(&sc->sc_q); return 0; } int pmsread(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)]; int s; int error = 0; size_t length; u_char buffer[PMS_CHUNK]; /* Block until mouse activity occured. */ s = spltty(); while (sc->sc_q.c_cc == 0) { if (flag & IO_NDELAY) { (void)splx(s); return EWOULDBLOCK; } sc->sc_state |= PMS_ASLP; if ((error = tsleep((caddr_t)sc, (PZERO | PCATCH), "pmsread", 0))) { sc->sc_state &= ~PMS_ASLP; (void)splx(s); return error; } } /* Transfer as many chunks as possible. */ while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { length = min(sc->sc_q.c_cc, uio->uio_resid); if (length > sizeof(buffer)) length = sizeof(buffer); /* Remove a small chunk from the input queue. */ (void) q_to_b(&sc->sc_q, buffer, length); /* Copy the data to the user process. */ if ((error = uiomove(buffer, length, uio))) break; } (void)splx(s); return error; } int pmsioctl(dev, cmd, addr, flag, p) dev_t dev; u_long cmd; caddr_t addr; int flag; struct proc *p; { struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)]; struct mouseinfo info; int s; int error = 0; s = spltty(); switch (cmd) { case MOUSEIOC_SETSTATE: printf("MOUSEIOC_SETSTATE called\n"); break; case MOUSEIOC_WRITEX: sc->sc_x = *(int *) addr; break; case MOUSEIOC_WRITEY: sc->sc_y = *(int *) addr; break; case MOUSEIOC_SETBOUNDS: { register struct mouse_boundingbox *bo = (void *) addr; struct mousebufrec buffer; sc->boundx = bo->x; sc->boundy = bo->y; sc->bounda = bo->a; sc->boundb = bo->b; buffer.status = IOC_ACK; buffer.x = sc->origx; buffer.y = sc->origy; #ifdef MOUSE_IOC_ACK pmsputbuffer(sc, &buffer); #endif break; } case MOUSEIOC_SETMODE: { struct mousebufrec buffer; int s; #ifdef MOUSE_IOC_ACK s = spltty(); #endif sc->sc_mode = *(int *)addr; buffer.status = IOC_ACK; buffer.x = sc->origx; buffer.y = sc->origy; #ifdef MOUSE_IOC_ACK if (sc->sc_q.c_cc > 0) printf("%s: setting mode with non empty buffer (%d)\n", sc->sc_dev.dv_xname, sc->sc_q.c_cc); pmsputbuffer(sc, &buffer); (void)splx(s); #endif return 0; } case MOUSEIOC_SETORIGIN: { register struct mouse_origin *oo = (void *) addr; struct mousebufrec buffer; sc->origx = oo->x; sc->origy = oo->y; buffer.status = IOC_ACK; buffer.x = sc->origx; buffer.y = sc->origy; #ifdef MOUSE_IOC_ACK pmsputbuffer(sc, &buffer); #endif break; } case MOUSEIOC_GETBOUNDS: { register struct mouse_boundingbox *bo = (void *) addr; bo->x = sc->boundx; bo->y = sc->boundy; bo->a = sc->bounda; bo->b = sc->boundb; break; } case MOUSEIOC_GETORIGIN: { register struct mouse_origin *oo = (void *) addr; oo->x = sc->origx; oo->y = sc->origy; break; } case MOUSEIOC_GETSTATE: info.status = sc->sc_status; if (sc->sc_x || sc->sc_y) info.status |= MOVEMENT; #if 1 info.xmotion = sc->sc_x; info.ymotion = sc->sc_y; #else if (sc->sc_x > sc->bounda) info.xmotion = sc->bounda; else if (sc->sc_x < sc->boundx) info.xmotion = sc->boundx; else info.xmotion = sc->sc_x; if (sc->sc_y > sc->boundb) info.ymotion = sc->boundb; else if (sc->sc_y < sc->boundy) info.ymotion = sc->boundy; else info.ymotion = sc->sc_y; #endif /* Reset historical information. */ sc->sc_x = sc->sc_y = 0; sc->sc_status &= ~BUTCHNGMASK; ndflush(&sc->sc_q, sc->sc_q.c_cc); error = copyout(&info, addr, sizeof(struct mouseinfo)); break; default: error = EINVAL; break; } (void)splx(s); return error; } /* Masks for the first byte of a packet */ #define PS2LBUTMASK 0x01 #define PS2RBUTMASK 0x02 #define PS2MBUTMASK 0x04 #define XNEG_MASK 0x10 #define YNEG_MASK 0x20 int pmsintr(arg) void *arg; { struct pms_softc *sc = arg; static int state = 0; static u_char buttons; u_char changed; static int dx, dy; int dosignal = 0; int s; u_char b; struct mousebufrec mbuffer; if ((sc->sc_state & PMS_OPEN) == 0) { /* Interrupts are not expected. Discard the byte. */ pms_flush(sc); return(-1); /* Could have been ours but pass it on */ } switch (state) { case 0: buttons = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); if ((buttons & 0xc0) == 0) ++state; break; case 1: dx = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); dx = (buttons & XNEG_MASK) ? -dx : dx; ++state; break; case 2: dy = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA); dy = (buttons & YNEG_MASK) ? -dy : dy; state = 0; buttons = ((buttons & PS2LBUTMASK) << 2) | ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); /* * Ahhh, the Xarm server interrupt button bits reversed. * If bit is set to 1, it means button is not pressed which is * not what PS/2 mouse button bits said. Since we are simulating * the quadmouse, that's not too picky about it. */ buttons ^= BUTSTATMASK; changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed; if (dx || dy || changed) { if (dx < 0) dx = -(256 + dx); if (dy < 0) dy = -(256 + dy); /* Update accumulated movements. */ sc->sc_x += dx; sc->sc_y += dy; if (sc->sc_x > sc->bounda) sc->sc_x = sc->bounda; else if (sc->sc_x < sc->boundx) sc->sc_x = sc->boundx; if (sc->sc_y > sc->boundb) sc->sc_y = sc->boundb; else if (sc->sc_y < sc->boundy) sc->sc_y = sc->boundy; if (sc->sc_q.c_cc == 0) dosignal = 1; /* Add this event to the queue. */ b = buttons & BUTSTATMASK; mbuffer.status = b | (b ^ sc->lastb) << 3 | (((sc->sc_x==sc->lastx) && (sc->sc_y==sc->lasty))?0:MOVEMENT); mbuffer.x = sc->sc_x * 2; mbuffer.y = sc->sc_y * 2; microtime(&mbuffer.event_time); s = spltty(); (void) b_to_q((char *)&mbuffer, sizeof(mbuffer), &sc->sc_q); (void) splx(s); sc->lastx = sc->sc_x; sc->lasty = sc->sc_y; sc->lastb = b; if(sc->sc_mode == MOUSEMODE_REL) { sc->origx = sc->origy = 0; sc->sc_x = sc->sc_y = 0; } selwakeup(&sc->sc_rsel); if (sc->sc_state & PMS_ASLP) { sc->sc_state &= ~PMS_ASLP; wakeup((caddr_t)sc); } if (dosignal) psignal(sc->sc_proc, SIGIO); } break; } return(1); /* Claim interrupt */ } int pmspoll(dev, events, p) dev_t dev; int events; struct proc *p; { struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)]; int revents = 0; int s = spltty(); if (events & (POLLIN | POLLRDNORM)) if (sc->sc_q.c_cc > 0) revents |= events & (POLLIN | POLLRDNORM); else selrecord(p, &sc->sc_rsel); (void)splx(s); return (revents); } void pmswatchdog(arg) void *arg; { struct pms_softc *sc = arg; int s; if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03) != 0x03) { printf("%s: Mouse is dead (%x), restart it\n", sc->sc_dev.dv_xname, bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS)); s = spltty(); pmsinit(sc); (void)splx(s); } } void pmsputbuffer(sc, buffer) struct pms_softc *sc; struct mousebufrec *buffer; { int s; int dosignal = 0; /* Time stamp the buffer */ microtime(&buffer->event_time); if (sc->sc_q.c_cc == 0) dosignal = 1; s=spltty(); (void)b_to_q((char *)buffer, sizeof(*buffer), &sc->sc_q); (void)splx(s); selwakeup(&sc->sc_rsel); if (sc->sc_state & PMS_ASLP) { sc->sc_state &= ~PMS_ASLP; wakeup((caddr_t)sc); } if (dosignal) psignal(sc->sc_proc, SIGIO); } /* End of pms.c */