The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/mse.c

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    1 /*
    2  * Copyright 1992 by the University of Guelph
    3  *
    4  * Permission to use, copy and modify this
    5  * software and its documentation for any purpose and without
    6  * fee is hereby granted, provided that the above copyright
    7  * notice appear in all copies and that both that copyright
    8  * notice and this permission notice appear in supporting
    9  * documentation.
   10  * University of Guelph makes no representations about the suitability of
   11  * this software for any purpose.  It is provided "as is"
   12  * without express or implied warranty.
   13  *
   14  * $FreeBSD: releng/5.1/sys/i386/isa/mse.c 111815 2003-03-03 12:15:54Z phk $
   15  */
   16 /*
   17  * Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and
   18  * the X386 port, courtesy of
   19  * Rick Macklem, rick@snowhite.cis.uoguelph.ca
   20  * Caveats: The driver currently uses spltty(), but doesn't use any
   21  * generic tty code. It could use splmse() (that only masks off the
   22  * bus mouse interrupt, but that would require hacking in i386/isa/icu.s.
   23  * (This may be worth the effort, since the Logitech generates 30/60
   24  * interrupts/sec continuously while it is open.)
   25  * NB: The ATI has NOT been tested yet!
   26  */
   27 
   28 /*
   29  * Modification history:
   30  * Sep 6, 1994 -- Lars Fredriksen(fredriks@mcs.com)
   31  *   improved probe based on input from Logitech.
   32  *
   33  * Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu)
   34  *   fixes to make it work with Microsoft InPort busmouse
   35  *
   36  * Jan, 1993 -- E. Stark (stark@cs.sunysb.edu)
   37  *   added patches for new "select" interface
   38  *
   39  * May 4, 1993 -- E. Stark (stark@cs.sunysb.edu)
   40  *   changed position of some spl()'s in mseread
   41  *
   42  * October 8, 1993 -- E. Stark (stark@cs.sunysb.edu)
   43  *   limit maximum negative x/y value to -127 to work around XFree problem
   44  *   that causes spurious button pushes.
   45  */
   46 
   47 #include <sys/param.h>
   48 #include <sys/systm.h>
   49 #include <sys/conf.h>
   50 #include <sys/kernel.h>
   51 #include <sys/bus.h>
   52 #include <sys/poll.h>
   53 #include <sys/selinfo.h>
   54 #include <sys/uio.h>
   55 #include <sys/mouse.h>
   56 
   57 #include <machine/bus_pio.h>
   58 #include <machine/bus.h>
   59 #include <machine/clock.h>
   60 #include <machine/resource.h>
   61 #include <sys/rman.h>
   62 
   63 #include <isa/isavar.h>
   64 
   65 /* driver configuration flags (config) */
   66 #define MSE_CONFIG_ACCEL        0x00f0  /* acceleration factor */
   67 #define MSE_CONFIG_FLAGS        (MSE_CONFIG_ACCEL)
   68 
   69 /*
   70  * Software control structure for mouse. The sc_enablemouse(),
   71  * sc_disablemouse() and sc_getmouse() routines must be called spl'd().
   72  */
   73 typedef struct mse_softc {
   74         int             sc_flags;
   75         int             sc_mousetype;
   76         struct selinfo  sc_selp;
   77         struct resource *sc_port;
   78         struct resource *sc_intr;
   79         bus_space_tag_t sc_iot;
   80         bus_space_handle_t sc_ioh;
   81         void            *sc_ih;
   82         void            (*sc_enablemouse)(bus_space_tag_t t,
   83                             bus_space_handle_t h);
   84         void            (*sc_disablemouse)(bus_space_tag_t t,
   85                             bus_space_handle_t h);
   86         void            (*sc_getmouse)(bus_space_tag_t t, bus_space_handle_t h,
   87                             int *dx, int *dy, int *but);
   88         int             sc_deltax;
   89         int             sc_deltay;
   90         int             sc_obuttons;
   91         int             sc_buttons;
   92         int             sc_bytesread;
   93         u_char          sc_bytes[MOUSE_SYS_PACKETSIZE];
   94         struct          callout_handle sc_callout;
   95         int             sc_watchdog;
   96         dev_t           sc_dev;
   97         dev_t           sc_ndev;
   98         mousehw_t       hw;
   99         mousemode_t     mode;
  100         mousestatus_t   status;
  101 } mse_softc_t;
  102 
  103 static  devclass_t      mse_devclass;
  104 
  105 static  int             mse_probe(device_t dev);
  106 static  int             mse_attach(device_t dev);
  107 static  int             mse_detach(device_t dev);
  108 
  109 static  device_method_t mse_methods[] = {
  110         DEVMETHOD(device_probe,         mse_probe),
  111         DEVMETHOD(device_attach,        mse_attach),
  112         DEVMETHOD(device_detach,        mse_detach),
  113         { 0, 0 }
  114 };
  115 
  116 static  driver_t        mse_driver = {
  117         "mse",
  118         mse_methods,
  119         sizeof(mse_softc_t),
  120 };
  121 
  122 DRIVER_MODULE(mse, isa, mse_driver, mse_devclass, 0, 0);
  123 
  124 static struct isa_pnp_id mse_ids[] = {
  125         { 0x000fd041, "Bus mouse" },                    /* PNP0F00 */
  126         { 0x020fd041, "InPort mouse" },                 /* PNP0F02 */
  127         { 0x0d0fd041, "InPort mouse compatible" },      /* PNP0F0D */
  128         { 0x110fd041, "Bus mouse compatible" },         /* PNP0F11 */
  129         { 0x150fd041, "Logitech bus mouse" },           /* PNP0F15 */
  130         { 0x180fd041, "Logitech bus mouse compatible" },/* PNP0F18 */
  131         { 0 }
  132 };
  133 
  134 static  d_open_t        mseopen;
  135 static  d_close_t       mseclose;
  136 static  d_read_t        mseread;
  137 static  d_ioctl_t       mseioctl;
  138 static  d_poll_t        msepoll;
  139 
  140 #define CDEV_MAJOR 27
  141 static struct cdevsw mse_cdevsw = {
  142         .d_open =       mseopen,
  143         .d_close =      mseclose,
  144         .d_read =       mseread,
  145         .d_ioctl =      mseioctl,
  146         .d_poll =       msepoll,
  147         .d_name =       "mse",
  148         .d_maj =        CDEV_MAJOR,
  149 };
  150 
  151 static  void            mseintr(void *);
  152 static  timeout_t       msetimeout;
  153 
  154 /* Flags */
  155 #define MSESC_OPEN      0x1
  156 #define MSESC_WANT      0x2
  157 
  158 /* and Mouse Types */
  159 #define MSE_NONE        0       /* don't move this! */
  160 #define MSE_LOGITECH    0x1
  161 #define MSE_ATIINPORT   0x2
  162 #define MSE_LOGI_SIG    0xA5
  163 
  164 #define MSE_PORTA       0
  165 #define MSE_PORTB       1
  166 #define MSE_PORTC       2
  167 #define MSE_PORTD       3
  168 #define MSE_IOSIZE      4
  169 
  170 #define MSE_UNIT(dev)           (minor(dev) >> 1)
  171 #define MSE_NBLOCKIO(dev)       (minor(dev) & 0x1)
  172 
  173 /*
  174  * Logitech bus mouse definitions
  175  */
  176 #define MSE_SETUP       0x91    /* What does this mean? */
  177                                 /* The definition for the control port */
  178                                 /* is as follows: */
  179 
  180                                 /* D7    =  Mode set flag (1 = active)  */
  181                                 /* D6,D5 =  Mode selection (port A)     */
  182                                 /*          00 = Mode 0 = Basic I/O     */
  183                                 /*          01 = Mode 1 = Strobed I/O   */
  184                                 /*          10 = Mode 2 = Bi-dir bus    */
  185                                 /* D4    =  Port A direction (1 = input)*/
  186                                 /* D3    =  Port C (upper 4 bits)       */
  187                                 /*          direction. (1 = input)      */
  188                                 /* D2    =  Mode selection (port B & C) */
  189                                 /*          0 = Mode 0 = Basic I/O      */
  190                                 /*          1 = Mode 1 = Strobed I/O    */
  191                                 /* D1    =  Port B direction (1 = input)*/
  192                                 /* D0    =  Port C (lower 4 bits)       */
  193                                 /*          direction. (1 = input)      */
  194 
  195                                 /* So 91 means Basic I/O on all 3 ports,*/
  196                                 /* Port A is an input port, B is an     */
  197                                 /* output port, C is split with upper   */
  198                                 /* 4 bits being an output port and lower*/
  199                                 /* 4 bits an input port, and enable the */
  200                                 /* sucker.                              */
  201                                 /* Courtesy Intel 8255 databook. Lars   */
  202 #define MSE_HOLD        0x80
  203 #define MSE_RXLOW       0x00
  204 #define MSE_RXHIGH      0x20
  205 #define MSE_RYLOW       0x40
  206 #define MSE_RYHIGH      0x60
  207 #define MSE_DISINTR     0x10
  208 #define MSE_INTREN      0x00
  209 
  210 static  int             mse_probelogi(device_t dev, mse_softc_t *sc);
  211 static  void            mse_disablelogi(bus_space_tag_t t,
  212                             bus_space_handle_t h);
  213 static  void            mse_getlogi(bus_space_tag_t t, bus_space_handle_t h,
  214                             int *dx, int *dy, int *but);
  215 static  void            mse_enablelogi(bus_space_tag_t t,
  216                             bus_space_handle_t h);
  217 
  218 /*
  219  * ATI Inport mouse definitions
  220  */
  221 #define MSE_INPORT_RESET        0x80
  222 #define MSE_INPORT_STATUS       0x00
  223 #define MSE_INPORT_DX           0x01
  224 #define MSE_INPORT_DY           0x02
  225 #define MSE_INPORT_MODE         0x07
  226 #define MSE_INPORT_HOLD         0x20
  227 #define MSE_INPORT_INTREN       0x09
  228 
  229 static  int             mse_probeati(device_t dev, mse_softc_t *sc);
  230 static  void            mse_enableati(bus_space_tag_t t, bus_space_handle_t h);
  231 static  void            mse_disableati(bus_space_tag_t t, bus_space_handle_t h);
  232 static  void            mse_getati(bus_space_tag_t t, bus_space_handle_t h,
  233                             int *dx, int *dy, int *but);
  234 
  235 #define MSEPRI  (PZERO + 3)
  236 
  237 /*
  238  * Table of mouse types.
  239  * Keep the Logitech last, since I haven't figured out how to probe it
  240  * properly yet. (Someday I'll have the documentation.)
  241  */
  242 static struct mse_types {
  243         int     m_type;         /* Type of bus mouse */
  244         int     (*m_probe)(device_t dev, mse_softc_t *sc);
  245                                 /* Probe routine to test for it */
  246         void    (*m_enable)(bus_space_tag_t t, bus_space_handle_t h);
  247                                 /* Start routine */
  248         void    (*m_disable)(bus_space_tag_t t, bus_space_handle_t h);
  249                                 /* Disable interrupts routine */
  250         void    (*m_get)(bus_space_tag_t t, bus_space_handle_t h, int *dx,
  251                     int *dy, int *but);
  252                                 /* and get mouse status */
  253         mousehw_t   m_hw;       /* buttons iftype type model hwid */
  254         mousemode_t m_mode;     /* proto rate res accel level size mask */
  255 } mse_types[] = {
  256         { MSE_ATIINPORT, 
  257           mse_probeati, mse_enableati, mse_disableati, mse_getati,
  258           { 2, MOUSE_IF_INPORT, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, },
  259           { MOUSE_PROTO_INPORT, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 
  260             { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, },
  261         { MSE_LOGITECH, 
  262           mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi,
  263           { 2, MOUSE_IF_BUS, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, },
  264           { MOUSE_PROTO_BUS, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 
  265             { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, },
  266         { 0, },
  267 };
  268 
  269 static  int
  270 mse_probe(dev)
  271         device_t dev;
  272 {
  273         mse_softc_t *sc;
  274         int error;
  275         int rid;
  276         int i;
  277 
  278         /* check PnP IDs */
  279         error = ISA_PNP_PROBE(device_get_parent(dev), dev, mse_ids);
  280         if (error == ENXIO)
  281                 return error;
  282 
  283         sc = device_get_softc(dev);
  284         rid = 0;
  285         sc->sc_port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
  286                                          MSE_IOSIZE, RF_ACTIVE);
  287         if (sc->sc_port == NULL)
  288                 return ENXIO;
  289         sc->sc_iot = rman_get_bustag(sc->sc_port);
  290         sc->sc_ioh = rman_get_bushandle(sc->sc_port);
  291 
  292         /*
  293          * Check for each mouse type in the table.
  294          */
  295         i = 0;
  296         while (mse_types[i].m_type) {
  297                 if ((*mse_types[i].m_probe)(dev, sc)) {
  298                         sc->sc_mousetype = mse_types[i].m_type;
  299                         sc->sc_enablemouse = mse_types[i].m_enable;
  300                         sc->sc_disablemouse = mse_types[i].m_disable;
  301                         sc->sc_getmouse = mse_types[i].m_get;
  302                         sc->hw = mse_types[i].m_hw;
  303                         sc->mode = mse_types[i].m_mode;
  304                         bus_release_resource(dev, SYS_RES_IOPORT, rid,
  305                                              sc->sc_port);
  306                         device_set_desc(dev, "Bus/InPort Mouse");
  307                         return 0;
  308                 }
  309                 i++;
  310         }
  311         bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
  312         return ENXIO;
  313 }
  314 
  315 static  int
  316 mse_attach(dev)
  317         device_t dev;
  318 {
  319         mse_softc_t *sc;
  320         int flags;
  321         int unit;
  322         int rid;
  323 
  324         sc = device_get_softc(dev);
  325         unit = device_get_unit(dev);
  326 
  327         rid = 0;
  328         sc->sc_port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
  329                                          MSE_IOSIZE, RF_ACTIVE);
  330         if (sc->sc_port == NULL)
  331                 return ENXIO;
  332         sc->sc_intr = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
  333                                          RF_ACTIVE);
  334         if (sc->sc_intr == NULL) {
  335                 bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
  336                 return ENXIO;
  337         }
  338         sc->sc_iot = rman_get_bustag(sc->sc_port);
  339         sc->sc_ioh = rman_get_bushandle(sc->sc_port);
  340 
  341         if (BUS_SETUP_INTR(device_get_parent(dev), dev, sc->sc_intr,
  342                            INTR_TYPE_TTY, mseintr, sc, &sc->sc_ih)) {
  343                 bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
  344                 bus_release_resource(dev, SYS_RES_IRQ, rid, sc->sc_intr);
  345                 return ENXIO;
  346         }
  347 
  348         flags = device_get_flags(dev);
  349         sc->mode.accelfactor = (flags & MSE_CONFIG_ACCEL) >> 4;
  350         callout_handle_init(&sc->sc_callout);
  351 
  352         sc->sc_dev = make_dev(&mse_cdevsw, unit << 1, 0, 0, 0600,
  353                               "mse%d", unit);
  354         sc->sc_ndev = make_dev(&mse_cdevsw, (unit<<1)+1, 0, 0, 0600,
  355                                "nmse%d", unit);
  356 
  357         return 0;
  358 }
  359 
  360 static  int
  361 mse_detach(dev)
  362         device_t dev;
  363 {
  364         mse_softc_t *sc;
  365         int rid;
  366 
  367         sc = device_get_softc(dev);
  368         if (sc->sc_flags & MSESC_OPEN)
  369                 return EBUSY;
  370 
  371         rid = 0;
  372         BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->sc_intr, sc->sc_ih);
  373         bus_release_resource(dev, SYS_RES_IRQ, rid, sc->sc_intr);
  374         bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
  375 
  376         destroy_dev(sc->sc_dev);
  377         destroy_dev(sc->sc_ndev);
  378 
  379         return 0;
  380 }
  381 
  382 /*
  383  * Exclusive open the mouse, initialize it and enable interrupts.
  384  */
  385 static  int
  386 mseopen(dev, flags, fmt, td)
  387         dev_t dev;
  388         int flags;
  389         int fmt;
  390         struct thread *td;
  391 {
  392         mse_softc_t *sc;
  393         int s;
  394 
  395         sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  396         if (sc == NULL)
  397                 return (ENXIO);
  398         if (sc->sc_mousetype == MSE_NONE)
  399                 return (ENXIO);
  400         if (sc->sc_flags & MSESC_OPEN)
  401                 return (EBUSY);
  402         sc->sc_flags |= MSESC_OPEN;
  403         sc->sc_obuttons = sc->sc_buttons = MOUSE_MSC_BUTTONS;
  404         sc->sc_deltax = sc->sc_deltay = 0;
  405         sc->sc_bytesread = sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
  406         sc->sc_watchdog = FALSE;
  407         sc->sc_callout = timeout(msetimeout, dev, hz*2);
  408         sc->mode.level = 0;
  409         sc->status.flags = 0;
  410         sc->status.button = sc->status.obutton = 0;
  411         sc->status.dx = sc->status.dy = sc->status.dz = 0;
  412 
  413         /*
  414          * Initialize mouse interface and enable interrupts.
  415          */
  416         s = spltty();
  417         (*sc->sc_enablemouse)(sc->sc_iot, sc->sc_ioh);
  418         splx(s);
  419         return (0);
  420 }
  421 
  422 /*
  423  * mseclose: just turn off mouse innterrupts.
  424  */
  425 static  int
  426 mseclose(dev, flags, fmt, td)
  427         dev_t dev;
  428         int flags;
  429         int fmt;
  430         struct thread *td;
  431 {
  432         mse_softc_t *sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  433         int s;
  434 
  435         untimeout(msetimeout, dev, sc->sc_callout);
  436         callout_handle_init(&sc->sc_callout);
  437         s = spltty();
  438         (*sc->sc_disablemouse)(sc->sc_iot, sc->sc_ioh);
  439         sc->sc_flags &= ~MSESC_OPEN;
  440         splx(s);
  441         return(0);
  442 }
  443 
  444 /*
  445  * mseread: return mouse info using the MSC serial protocol, but without
  446  * using bytes 4 and 5.
  447  * (Yes this is cheesy, but it makes the X386 server happy, so...)
  448  */
  449 static  int
  450 mseread(dev, uio, ioflag)
  451         dev_t dev;
  452         struct uio *uio;
  453         int ioflag;
  454 {
  455         mse_softc_t *sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  456         int xfer, s, error;
  457 
  458         /*
  459          * If there are no protocol bytes to be read, set up a new protocol
  460          * packet.
  461          */
  462         s = spltty(); /* XXX Should be its own spl, but where is imlXX() */
  463         if (sc->sc_bytesread >= sc->mode.packetsize) {
  464                 while (sc->sc_deltax == 0 && sc->sc_deltay == 0 &&
  465                        (sc->sc_obuttons ^ sc->sc_buttons) == 0) {
  466                         if (MSE_NBLOCKIO(dev)) {
  467                                 splx(s);
  468                                 return (0);
  469                         }
  470                         sc->sc_flags |= MSESC_WANT;
  471                         error = tsleep(sc, MSEPRI | PCATCH,
  472                                 "mseread", 0);
  473                         if (error) {
  474                                 splx(s);
  475                                 return (error);
  476                         }
  477                 }
  478 
  479                 /*
  480                  * Generate protocol bytes.
  481                  * For some reason X386 expects 5 bytes but never uses
  482                  * the fourth or fifth?
  483                  */
  484                 sc->sc_bytes[0] = sc->mode.syncmask[1] 
  485                     | (sc->sc_buttons & ~sc->mode.syncmask[0]);
  486                 if (sc->sc_deltax > 127)
  487                         sc->sc_deltax = 127;
  488                 if (sc->sc_deltax < -127)
  489                         sc->sc_deltax = -127;
  490                 sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */
  491                 if (sc->sc_deltay > 127)
  492                         sc->sc_deltay = 127;
  493                 if (sc->sc_deltay < -127)
  494                         sc->sc_deltay = -127;
  495                 sc->sc_bytes[1] = sc->sc_deltax;
  496                 sc->sc_bytes[2] = sc->sc_deltay;
  497                 sc->sc_bytes[3] = sc->sc_bytes[4] = 0;
  498                 sc->sc_bytes[5] = sc->sc_bytes[6] = 0;
  499                 sc->sc_bytes[7] = MOUSE_SYS_EXTBUTTONS;
  500                 sc->sc_obuttons = sc->sc_buttons;
  501                 sc->sc_deltax = sc->sc_deltay = 0;
  502                 sc->sc_bytesread = 0;
  503         }
  504         splx(s);
  505         xfer = min(uio->uio_resid, sc->mode.packetsize - sc->sc_bytesread);
  506         error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio);
  507         if (error)
  508                 return (error);
  509         sc->sc_bytesread += xfer;
  510         return(0);
  511 }
  512 
  513 /*
  514  * mseioctl: process ioctl commands.
  515  */
  516 static int
  517 mseioctl(dev, cmd, addr, flag, td)
  518         dev_t dev;
  519         u_long cmd;
  520         caddr_t addr;
  521         int flag;
  522         struct thread *td;
  523 {
  524         mse_softc_t *sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  525         mousestatus_t status;
  526         int err = 0;
  527         int s;
  528 
  529         switch (cmd) {
  530 
  531         case MOUSE_GETHWINFO:
  532                 s = spltty();
  533                 *(mousehw_t *)addr = sc->hw;
  534                 if (sc->mode.level == 0)
  535                         ((mousehw_t *)addr)->model = MOUSE_MODEL_GENERIC;
  536                 splx(s);
  537                 break;
  538 
  539         case MOUSE_GETMODE:
  540                 s = spltty();
  541                 *(mousemode_t *)addr = sc->mode;
  542                 switch (sc->mode.level) {
  543                 case 0:
  544                         break;
  545                 case 1:
  546                         ((mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE;
  547                         ((mousemode_t *)addr)->syncmask[0] = MOUSE_SYS_SYNCMASK;
  548                         ((mousemode_t *)addr)->syncmask[1] = MOUSE_SYS_SYNC;
  549                         break;
  550                 }
  551                 splx(s);
  552                 break;
  553 
  554         case MOUSE_SETMODE:
  555                 switch (((mousemode_t *)addr)->level) {
  556                 case 0:
  557                 case 1:
  558                         break;
  559                 default:
  560                         return (EINVAL);
  561                 }
  562                 if (((mousemode_t *)addr)->accelfactor < -1)
  563                         return (EINVAL);
  564                 else if (((mousemode_t *)addr)->accelfactor >= 0)
  565                         sc->mode.accelfactor = 
  566                             ((mousemode_t *)addr)->accelfactor;
  567                 sc->mode.level = ((mousemode_t *)addr)->level;
  568                 switch (sc->mode.level) {
  569                 case 0:
  570                         sc->sc_bytesread = sc->mode.packetsize 
  571                             = MOUSE_MSC_PACKETSIZE;
  572                         break;
  573                 case 1:
  574                         sc->sc_bytesread = sc->mode.packetsize 
  575                             = MOUSE_SYS_PACKETSIZE;
  576                         break;
  577                 }
  578                 break;
  579 
  580         case MOUSE_GETLEVEL:
  581                 *(int *)addr = sc->mode.level;
  582                 break;
  583 
  584         case MOUSE_SETLEVEL:
  585                 switch (*(int *)addr) {
  586                 case 0:
  587                         sc->mode.level = *(int *)addr;
  588                         sc->sc_bytesread = sc->mode.packetsize 
  589                             = MOUSE_MSC_PACKETSIZE;
  590                         break;
  591                 case 1:
  592                         sc->mode.level = *(int *)addr;
  593                         sc->sc_bytesread = sc->mode.packetsize 
  594                             = MOUSE_SYS_PACKETSIZE;
  595                         break;
  596                 default:
  597                         return (EINVAL);
  598                 }
  599                 break;
  600 
  601         case MOUSE_GETSTATUS:
  602                 s = spltty();
  603                 status = sc->status;
  604                 sc->status.flags = 0;
  605                 sc->status.obutton = sc->status.button;
  606                 sc->status.button = 0;
  607                 sc->status.dx = 0;
  608                 sc->status.dy = 0;
  609                 sc->status.dz = 0;
  610                 splx(s);
  611                 *(mousestatus_t *)addr = status;
  612                 break;
  613 
  614         case MOUSE_READSTATE:
  615         case MOUSE_READDATA:
  616                 return (ENODEV);
  617 
  618 #if (defined(MOUSE_GETVARS))
  619         case MOUSE_GETVARS:
  620         case MOUSE_SETVARS:
  621                 return (ENODEV);
  622 #endif
  623 
  624         default:
  625                 return (ENOTTY);
  626         }
  627         return (err);
  628 }
  629 
  630 /*
  631  * msepoll: check for mouse input to be processed.
  632  */
  633 static  int
  634 msepoll(dev, events, td)
  635         dev_t dev;
  636         int events;
  637         struct thread *td;
  638 {
  639         mse_softc_t *sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  640         int s;
  641         int revents = 0;
  642 
  643         s = spltty();
  644         if (events & (POLLIN | POLLRDNORM)) {
  645                 if (sc->sc_bytesread != sc->mode.packetsize ||
  646                     sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
  647                     (sc->sc_obuttons ^ sc->sc_buttons) != 0)
  648                         revents |= events & (POLLIN | POLLRDNORM);
  649                 else {
  650                         /*
  651                          * Since this is an exclusive open device, any previous
  652                          * proc pointer is trash now, so we can just assign it.
  653                          */
  654                         selrecord(td, &sc->sc_selp);
  655                 }
  656         }
  657         splx(s);
  658         return (revents);
  659 }
  660 
  661 /*
  662  * msetimeout: watchdog timer routine.
  663  */
  664 static void
  665 msetimeout(arg)
  666         void *arg;
  667 {
  668         dev_t dev;
  669         mse_softc_t *sc;
  670 
  671         dev = (dev_t)arg;
  672         sc = devclass_get_softc(mse_devclass, MSE_UNIT(dev));
  673         if (sc->sc_watchdog) {
  674                 if (bootverbose)
  675                         printf("mse%d: lost interrupt?\n", MSE_UNIT(dev));
  676                 mseintr(sc);
  677         }
  678         sc->sc_watchdog = TRUE;
  679         sc->sc_callout = timeout(msetimeout, dev, hz);
  680 }
  681 
  682 /*
  683  * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative.
  684  */
  685 static void
  686 mseintr(arg)
  687         void *arg;
  688 {
  689         /*
  690          * the table to turn MouseSystem button bits (MOUSE_MSC_BUTTON?UP)
  691          * into `mousestatus' button bits (MOUSE_BUTTON?DOWN).
  692          */
  693         static int butmap[8] = {
  694                 0, 
  695                 MOUSE_BUTTON3DOWN, 
  696                 MOUSE_BUTTON2DOWN, 
  697                 MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN, 
  698                 MOUSE_BUTTON1DOWN, 
  699                 MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, 
  700                 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
  701                 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
  702         };
  703         mse_softc_t *sc = arg;
  704         int dx, dy, but;
  705         int sign;
  706 
  707 #ifdef DEBUG
  708         static int mse_intrcnt = 0;
  709         if((mse_intrcnt++ % 10000) == 0)
  710                 printf("mseintr\n");
  711 #endif /* DEBUG */
  712         if ((sc->sc_flags & MSESC_OPEN) == 0)
  713                 return;
  714 
  715         (*sc->sc_getmouse)(sc->sc_iot, sc->sc_ioh, &dx, &dy, &but);
  716         if (sc->mode.accelfactor > 0) {
  717                 sign = (dx < 0);
  718                 dx = dx * dx / sc->mode.accelfactor;
  719                 if (dx == 0)
  720                         dx = 1;
  721                 if (sign)
  722                         dx = -dx;
  723                 sign = (dy < 0);
  724                 dy = dy * dy / sc->mode.accelfactor;
  725                 if (dy == 0)
  726                         dy = 1;
  727                 if (sign)
  728                         dy = -dy;
  729         }
  730         sc->sc_deltax += dx;
  731         sc->sc_deltay += dy;
  732         sc->sc_buttons = but;
  733 
  734         but = butmap[~but & MOUSE_MSC_BUTTONS];
  735         sc->status.dx += dx;
  736         sc->status.dy += dy;
  737         sc->status.flags |= ((dx || dy) ? MOUSE_POSCHANGED : 0)
  738             | (sc->status.button ^ but);
  739         sc->status.button = but;
  740 
  741         sc->sc_watchdog = FALSE;
  742 
  743         /*
  744          * If mouse state has changed, wake up anyone wanting to know.
  745          */
  746         if (sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
  747             (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
  748                 if (sc->sc_flags & MSESC_WANT) {
  749                         sc->sc_flags &= ~MSESC_WANT;
  750                         wakeup(sc);
  751                 }
  752                 selwakeup(&sc->sc_selp);
  753         }
  754 }
  755 
  756 /*
  757  * Routines for the Logitech mouse.
  758  */
  759 /*
  760  * Test for a Logitech bus mouse and return 1 if it is.
  761  * (until I know how to use the signature port properly, just disable
  762  *  interrupts and return 1)
  763  */
  764 static int
  765 mse_probelogi(dev, sc)
  766         device_t dev;
  767         mse_softc_t *sc;
  768 {
  769 
  770         int sig;
  771 
  772         bus_space_write_1(sc->sc_iot, sc->sc_ioh, MSE_PORTD, MSE_SETUP);
  773                 /* set the signature port */
  774         bus_space_write_1(sc->sc_iot, sc->sc_ioh, MSE_PORTB, MSE_LOGI_SIG);
  775 
  776         DELAY(30000); /* 30 ms delay */
  777         sig = bus_space_read_1(sc->sc_iot, sc->sc_ioh, MSE_PORTB) & 0xFF;
  778         if (sig == MSE_LOGI_SIG) {
  779                 bus_space_write_1(sc->sc_iot, sc->sc_ioh, MSE_PORTC,
  780                                   MSE_DISINTR);
  781                 return(1);
  782         } else {
  783                 if (bootverbose)
  784                         device_printf(dev, "wrong signature %x\n", sig);
  785                 return(0);
  786         }
  787 }
  788 
  789 /*
  790  * Initialize Logitech mouse and enable interrupts.
  791  */
  792 static void
  793 mse_enablelogi(tag, handle)
  794         bus_space_tag_t tag;
  795         bus_space_handle_t handle;
  796 {
  797         int dx, dy, but;
  798 
  799         bus_space_write_1(tag, handle, MSE_PORTD, MSE_SETUP);
  800         mse_getlogi(tag, handle, &dx, &dy, &but);
  801 }
  802 
  803 /*
  804  * Disable interrupts for Logitech mouse.
  805  */
  806 static void
  807 mse_disablelogi(tag, handle)
  808         bus_space_tag_t tag;
  809         bus_space_handle_t handle;
  810 {
  811 
  812         bus_space_write_1(tag, handle, MSE_PORTC, MSE_DISINTR);
  813 }
  814 
  815 /*
  816  * Get the current dx, dy and button up/down state.
  817  */
  818 static void
  819 mse_getlogi(tag, handle, dx, dy, but)
  820         bus_space_tag_t tag;
  821         bus_space_handle_t handle;
  822         int *dx;
  823         int *dy;
  824         int *but;
  825 {
  826         register char x, y;
  827 
  828         bus_space_write_1(tag, handle, MSE_PORTC, MSE_HOLD | MSE_RXLOW);
  829         x = bus_space_read_1(tag, handle, MSE_PORTA);
  830         *but = (x >> 5) & MOUSE_MSC_BUTTONS;
  831         x &= 0xf;
  832         bus_space_write_1(tag, handle, MSE_PORTC, MSE_HOLD | MSE_RXHIGH);
  833         x |= (bus_space_read_1(tag, handle, MSE_PORTA) << 4);
  834         bus_space_write_1(tag, handle, MSE_PORTC, MSE_HOLD | MSE_RYLOW);
  835         y = (bus_space_read_1(tag, handle, MSE_PORTA) & 0xf);
  836         bus_space_write_1(tag, handle, MSE_PORTC, MSE_HOLD | MSE_RYHIGH);
  837         y |= (bus_space_read_1(tag, handle, MSE_PORTA) << 4);
  838         *dx = x;
  839         *dy = y;
  840         bus_space_write_1(tag, handle, MSE_PORTC, MSE_INTREN);
  841 }
  842 
  843 /*
  844  * Routines for the ATI Inport bus mouse.
  845  */
  846 /*
  847  * Test for an ATI Inport bus mouse and return 1 if it is.
  848  * (do not enable interrupts)
  849  */
  850 static int
  851 mse_probeati(dev, sc)
  852         device_t dev;
  853         mse_softc_t *sc;
  854 {
  855         int i;
  856 
  857         for (i = 0; i < 2; i++)
  858                 if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, MSE_PORTC) == 0xde)
  859                         return (1);
  860         return (0);
  861 }
  862 
  863 /*
  864  * Initialize ATI Inport mouse and enable interrupts.
  865  */
  866 static void
  867 mse_enableati(tag, handle)
  868         bus_space_tag_t tag;
  869         bus_space_handle_t handle;
  870 {
  871 
  872         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_RESET);
  873         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_MODE);
  874         bus_space_write_1(tag, handle, MSE_PORTB, MSE_INPORT_INTREN);
  875 }
  876 
  877 /*
  878  * Disable interrupts for ATI Inport mouse.
  879  */
  880 static void
  881 mse_disableati(tag, handle)
  882         bus_space_tag_t tag;
  883         bus_space_handle_t handle;
  884 {
  885 
  886         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_MODE);
  887         bus_space_write_1(tag, handle, MSE_PORTB, 0);
  888 }
  889 
  890 /*
  891  * Get current dx, dy and up/down button state.
  892  */
  893 static void
  894 mse_getati(tag, handle, dx, dy, but)
  895         bus_space_tag_t tag;
  896         bus_space_handle_t handle;
  897         int *dx;
  898         int *dy;
  899         int *but;
  900 {
  901         register char byte;
  902 
  903         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_MODE);
  904         bus_space_write_1(tag, handle, MSE_PORTB, MSE_INPORT_HOLD);
  905         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_STATUS);
  906         *but = ~bus_space_read_1(tag, handle, MSE_PORTB) & MOUSE_MSC_BUTTONS;
  907         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_DX);
  908         byte = bus_space_read_1(tag, handle, MSE_PORTB);
  909         *dx = byte;
  910         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_DY);
  911         byte = bus_space_read_1(tag, handle, MSE_PORTB);
  912         *dy = byte;
  913         bus_space_write_1(tag, handle, MSE_PORTA, MSE_INPORT_MODE);
  914         bus_space_write_1(tag, handle, MSE_PORTB, MSE_INPORT_INTREN);
  915 }

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