dist/src/sun_mouse.c

/*
 * Copyright (c) 2004-2005, 2008-2010, Oracle and/or its affiliates.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
/*
 * Copyright 1999-2001 The XFree86 Project, Inc.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the XFree86 Project shall
 * not be used in advertising or otherwise to promote the sale, use or other
 * dealings in this Software without prior written authorization from the
 * XFree86 Project.
 */

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#include "xorg-server.h"
#include "xf86.h"
#include "xf86_OSlib.h"
#include "mouse.h"
#include "xisb.h"
#include "mipointer.h"
#include <sys/stropts.h>
#include <sys/vuid_event.h>
#include <sys/msio.h>

/* Wheel mouse support in VUID drivers in Solaris 9 updates & Solaris 10 */
#ifdef WHEEL_DEVID /* Defined in vuid_event.h if VUID wheel support present */
# define HAVE_VUID_WHEEL
#endif
#ifdef HAVE_VUID_WHEEL
# include <sys/vuid_wheel.h>
#endif

/* Support for scaling absolute coordinates to screen size in
 * Solaris 10 updates and beyond */
#if !defined(HAVE_ABSOLUTE_MOUSE_SCALING)
# ifdef MSIOSRESOLUTION /* Defined in msio.h if scaling support present */
#  define HAVE_ABSOLUTE_MOUSE_SCALING
# endif
#endif

/* Names of protocols that are handled internally here. */

static const char *internalNames[] = {
	"VUID",
	NULL
};

static const char *solarisMouseDevs[] = {
    /* Device file:	Protocol: 			*/
    "/dev/mouse",	"VUID",		/* USB or SPARC */
#if defined(__i386) || defined(__x86)
    "/dev/kdmouse",	"PS/2",		/* PS/2 */
#endif
    NULL
};

typedef struct _VuidMseRec {
    struct _VuidMseRec *next;
    InputInfoPtr	pInfo;
    Firm_event 		event;
    unsigned char *	buffer;
    char *		strmod;
    Bool(*wrapped_device_control)(DeviceIntPtr device, int what);
#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
    Ms_screen_resolution	 absres;
#endif
    OsTimerPtr		remove_timer;   /* Callback for removal on ENODEV */
} VuidMseRec, *VuidMsePtr;

static VuidMsePtr	vuidMouseList = NULL;

static int  vuidMouseProc(DeviceIntPtr pPointer, int what);
static void vuidReadInput(InputInfoPtr pInfo);

#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
static void vuidMouseSendScreenSize(ScreenPtr pScreen, VuidMsePtr pVuidMse);
static void vuidMouseAdjustFrame(int index, int x, int y, int flags);

static int vuidMouseGeneration = 0;

#if HAS_DEVPRIVATEKEYREC
static DevPrivateKeyRec vuidMouseScreenIndex;
#else
static int vuidMouseScreenIndex;
#endif /* HAS_DEVPRIVATEKEYREC */

#define vuidMouseGetScreenPrivate(s) ( \
    dixLookupPrivate(&(s)->devPrivates, &vuidMouseScreenIndex))
#define vuidMouseSetScreenPrivate(s,p) \
    dixSetPrivate(&(s)->devPrivates, &vuidMouseScreenIndex, (void *) p)
#endif /* HAVE_ABSOLUTE_MOUSE_SCALING */

static inline
VuidMsePtr getVuidMsePriv(InputInfoPtr pInfo)
{
    VuidMsePtr m = vuidMouseList;

    while ((m != NULL) && (m->pInfo != pInfo)) {
	m = m->next;
    }

    return m;
}

/* Called from OsTimer callback, since removing a device from the device
   list or changing pInfo->fd while xf86Wakeup is looping through the list
   causes server crashes */
static CARD32
vuidRemoveMouse(OsTimerPtr timer, CARD32 time, pointer arg)
{
    InputInfoPtr pInfo = (InputInfoPtr) arg;

    xf86DisableDevice(pInfo->dev, TRUE);

    return 0;  /* All done, don't set to run again */
}

/*
 * Initialize and enable the mouse wheel, if present.
 *
 * Returns 1 if mouse wheel was successfully enabled.
 * Returns 0 if an error occurred or if there is no mouse wheel.
 */
static int
vuidMouseWheelInit(InputInfoPtr pInfo)
{
#ifdef HAVE_VUID_WHEEL
    wheel_state wstate;
    int nwheel = -1;
    int i;

    wstate.vers = VUID_WHEEL_STATE_VERS;
    wstate.id = 0;
    wstate.stateflags = (uint32_t) -1;

    SYSCALL(i = ioctl(pInfo->fd, VUIDGWHEELCOUNT, &nwheel));
    if (i != 0)
	return (0);

    SYSCALL(i = ioctl(pInfo->fd, VUIDGWHEELSTATE, &wstate));
    if (i != 0) {
	xf86Msg(X_WARNING, "%s: couldn't get wheel state\n", pInfo->name);
	return (0);
    }

    wstate.stateflags |= VUID_WHEEL_STATE_ENABLED;

    SYSCALL(i = ioctl(pInfo->fd, VUIDSWHEELSTATE, &wstate));
    if (i != 0) {
	xf86Msg(X_WARNING, "%s: couldn't enable wheel\n", pInfo->name);
	return (0);
    }

    return (1);
#else
    return (0);
#endif
}


/* This function is called when the protocol is "VUID". */
static Bool
vuidPreInit(InputInfoPtr pInfo, const char *protocol, int flags)
{
    MouseDevPtr pMse = pInfo->private;
    VuidMsePtr pVuidMse;
    int buttons, i;

    pVuidMse = calloc(sizeof(VuidMseRec), 1);
    if (pVuidMse == NULL) {
	xf86Msg(X_ERROR, "%s: cannot allocate VuidMouseRec\n", pInfo->name);
	free(pMse);
	return FALSE;
    }

    pVuidMse->buffer = (unsigned char *)&pVuidMse->event;
    pVuidMse->strmod = xf86SetStrOption(pInfo->options, "StreamsModule", NULL);

    /* Setup the local procs. */
    pVuidMse->wrapped_device_control = pInfo->device_control;
    pInfo->device_control = vuidMouseProc;
    pInfo->read_input = vuidReadInput;

    pMse->xisbscale = sizeof(Firm_event);

#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
    pVuidMse->absres.height = pVuidMse->absres.width = 0;
#endif
    pVuidMse->pInfo = pInfo;
    pVuidMse->next = vuidMouseList;
    vuidMouseList = pVuidMse;

#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 12
    pInfo->flags |= XI86_CONFIGURED;
#endif
    return TRUE;
}

static void
vuidFlushAbsEvents(InputInfoPtr pInfo, int absX, int absY,
		   Bool *absXset, Bool *absYset)
{
#ifdef DEBUG
    ErrorF("vuidFlushAbsEvents: %d,%d (set: %d, %d)\n", absX, absY,
	   *absXset, *absYset);
#endif
    if ((*absXset) && (*absYset)) {
	xf86PostMotionEvent(pInfo->dev,
			    /* is_absolute: */    TRUE,
			    /* first_valuator: */ 0,
			    /* num_valuators: */  2,
			    absX, absY);
    } else if (*absXset) {
	xf86PostMotionEvent(pInfo->dev,
			    /* is_absolute: */    TRUE,
			    /* first_valuator: */ 0,
			    /* num_valuators: */  1,
			    absX);
    } else if (*absYset) {
	xf86PostMotionEvent(pInfo->dev,
			    /* is_absolute: */    TRUE,
			    /* first_valuator: */ 1,
			    /* num_valuators: */  1,
			    absY);
    }

    *absXset = FALSE;
    *absYset = FALSE;
}

static void
vuidReadInput(InputInfoPtr pInfo)
{
    MouseDevPtr pMse;
    VuidMsePtr pVuidMse;
    int buttons;
    int dx = 0, dy = 0, dz = 0, dw = 0;
    unsigned int n;
    int c;
    unsigned char *pBuf;
    int absX = 0, absY = 0;
    Bool absXset = FALSE, absYset = FALSE;

    pMse = pInfo->private;
    pVuidMse = getVuidMsePriv(pInfo);
    buttons = pMse->lastButtons;
    pBuf = pVuidMse->buffer;
    n = 0;

    do {
	n = read(pInfo->fd, pBuf, sizeof(Firm_event));

	if (n == 0) {
	    break;
	} else if (n == -1) {
	    switch (errno) {
		case EAGAIN: /* Nothing to read now */
		    n = 0;   /* End loop, go on to flush events & return */
		    continue;
		case EINTR:  /* Interrupted, try again */
		    continue;
		case ENODEV: /* May happen when USB mouse is unplugged */
		    /* We use X_NONE here because it doesn't alloc since we
		       may be called from SIGIO handler */
		    xf86MsgVerb(X_NONE, 0,
				"%s: Device no longer present - removing.\n",
				pInfo->name);
		    xf86RemoveEnabledDevice(pInfo);
		    pVuidMse->remove_timer =
			TimerSet(pVuidMse->remove_timer, 0, 1,
				 vuidRemoveMouse, pInfo);
		    return;
		default:     /* All other errors */
		    /* We use X_NONE here because it doesn't alloc since we
		       may be called from SIGIO handler */
		    xf86MsgVerb(X_NONE, 0, "%s: Read error: %s\n", pInfo->name,
				strerror(errno));
		    return;
	    }
	} else if (n != sizeof(Firm_event)) {
	    xf86Msg(X_WARNING, "%s: incomplete packet, size %d\n",
			pInfo->name, n);
	}

#ifdef DEBUG
	ErrorF("vuidReadInput: event type: %3d value: %5d\n",
	       pVuidMse->event.id, pVuidMse->event.value);
#endif

	if (pVuidMse->event.id >= BUT_FIRST && pVuidMse->event.id <= BUT_LAST) {
	    /* button */
	    int butnum = pVuidMse->event.id - BUT_FIRST;

	    if (butnum < 3)
		butnum = 2 - butnum;
	    if (!pVuidMse->event.value)
		buttons &= ~(1 << butnum);
	    else
		buttons |= (1 << butnum);
	} else if (pVuidMse->event.id >= VLOC_FIRST &&
		   pVuidMse->event.id <= VLOC_LAST) {
	    /* axis */
	    int delta = pVuidMse->event.value;
	    switch(pVuidMse->event.id) {
	    case LOC_X_DELTA:
		dx += delta;
		break;
	    case LOC_Y_DELTA:
		dy -= delta;
		break;
	    case LOC_X_ABSOLUTE:
		if (absXset) {
		    vuidFlushAbsEvents(pInfo, absX, absY, &absXset, &absYset);
		}
		absX = delta;
		absXset = TRUE;
		break;
	    case LOC_Y_ABSOLUTE:
		if (absYset) {
		    vuidFlushAbsEvents(pInfo, absX, absY, &absXset, &absYset);
		}
		absY = delta;
		absYset = TRUE;
		break;
	    }
	}
#ifdef HAVE_VUID_WHEEL
	else if (vuid_in_range(VUID_WHEEL, pVuidMse->event.id)) {
	    if (vuid_id_offset(pVuidMse->event.id) == 0)
		dz -= VUID_WHEEL_GETDELTA(pVuidMse->event.value);
	    else
		dw -= VUID_WHEEL_GETDELTA(pVuidMse->event.value);
	}
#endif
#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
	else if (pVuidMse->event.id == MOUSE_TYPE_ABSOLUTE) {
	    ScreenPtr 	ptrCurScreen;

	    /* force sending absolute resolution scaling ioctl */
	    pVuidMse->absres.height = pVuidMse->absres.width = 0;
	    ptrCurScreen = miPointerGetScreen(pInfo->dev);
	    vuidMouseSendScreenSize(ptrCurScreen, pVuidMse);
	}
#endif

    } while (n != 0);

    if (absXset || absYset) {
	vuidFlushAbsEvents(pInfo, absX, absY, &absXset, &absYset);
    }

    pMse->PostEvent(pInfo, buttons, dx, dy, dz, dw);
    return;
}

#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
static void vuidMouseSendScreenSize(ScreenPtr pScreen, VuidMsePtr pVuidMse)
{
    InputInfoPtr pInfo = pVuidMse->pInfo;
    ScrnInfoPtr pScr = XF86SCRNINFO(pScreen);
    int result;

    if (!pScr->currentMode)
	return;

    if ((pVuidMse->absres.width != pScr->currentMode->HDisplay) ||
	(pVuidMse->absres.height != pScr->currentMode->VDisplay))
    {
	pVuidMse->absres.width = pScr->currentMode->HDisplay;
	pVuidMse->absres.height = pScr->currentMode->VDisplay;

	do {
	    result = ioctl(pInfo->fd, MSIOSRESOLUTION, &(pVuidMse->absres));
	} while ( (result != 0) && (errno == EINTR) );

	if (result != 0) {
	    xf86Msg(X_WARNING,
		    "%s: couldn't set absolute mouse scaling resolution: %s\n",
		    pInfo->name, strerror(errno));
#ifdef DEBUG
	} else {
	    xf86Msg(X_INFO,
		    "%s: absolute mouse scaling resolution set to %d x %d\n",
		    pInfo->name,
		    pVuidMse->absres.width, pVuidMse->absres.height);
#endif
	}
    }
}

static void vuidMouseAdjustFrame(int index, int x, int y, int flags)
{
      ScrnInfoPtr	pScrn = xf86Screens[index];
      ScreenPtr		pScreen = pScrn->pScreen;
      xf86AdjustFrameProc *wrappedAdjustFrame
	  = (xf86AdjustFrameProc *) vuidMouseGetScreenPrivate(pScreen);
      VuidMsePtr	m;
      ScreenPtr 	ptrCurScreen;

      if(wrappedAdjustFrame) {
        pScrn->AdjustFrame = wrappedAdjustFrame;
        (*pScrn->AdjustFrame)(index, x, y, flags);
        pScrn->AdjustFrame = vuidMouseAdjustFrame;
      }

      for (m = vuidMouseList; m != NULL ; m = m->next) {
	  ptrCurScreen = miPointerGetScreen(m->pInfo->dev);
	  if (ptrCurScreen == pScreen)
	  {
	      vuidMouseSendScreenSize(pScreen, m);
	  }
      }
}
#endif /* HAVE_ABSOLUTE_MOUSE_SCALING */


static int
vuidMouseProc(DeviceIntPtr pPointer, int what)
{
    InputInfoPtr pInfo;
    MouseDevPtr pMse;
    VuidMsePtr pVuidMse;
    int ret = Success;
    int i;

    pInfo = pPointer->public.devicePrivate;
    pMse = pInfo->private;
    pMse->device = pPointer;

    pVuidMse = getVuidMsePriv(pInfo);
    if (pVuidMse == NULL) {
	return BadImplementation;
    }

    switch (what) {

    case DEVICE_INIT:
#ifdef HAVE_ABSOLUTE_MOUSE_SCALING

#if HAS_DEVPRIVATEKEYREC
	if (!dixRegisterPrivateKey(&vuidMouseScreenIndex, PRIVATE_SCREEN, 0))
		return BadAlloc;
#endif  /* HAS_DEVPRIVATEKEYREC */

	if (vuidMouseGeneration != serverGeneration) {
		for (i = 0; i < screenInfo.numScreens; i++) {
		    ScreenPtr pScreen = screenInfo.screens[i];
		    ScrnInfoPtr pScrn = XF86SCRNINFO(pScreen);
		    vuidMouseSetScreenPrivate(pScreen, pScrn->AdjustFrame);
		    pScrn->AdjustFrame = vuidMouseAdjustFrame;
		}
	    vuidMouseGeneration = serverGeneration;
	}
#endif
	ret = pVuidMse->wrapped_device_control(pPointer, what);
	break;

    case DEVICE_ON:
	ret = pVuidMse->wrapped_device_control(pPointer, DEVICE_ON);

	if ((ret == Success) && (pInfo->fd != -1)) {
	    int fmt = VUID_FIRM_EVENT;

	    if (pVuidMse->strmod) {
		/* Check to see if module is already pushed */
		SYSCALL(i = ioctl(pInfo->fd, I_FIND, pVuidMse->strmod));

		if (i == 0) { /* Not already pushed */
		    SYSCALL(i = ioctl(pInfo->fd, I_PUSH, pVuidMse->strmod));
		    if (i < 0) {
			xf86Msg(X_WARNING, "%s: cannot push module '%s' "
				"onto mouse device: %s\n", pInfo->name,
				pVuidMse->strmod, strerror(errno));
			free(pVuidMse->strmod);
			pVuidMse->strmod = NULL;
		    }
		}
	    }

	    SYSCALL(i = ioctl(pInfo->fd, VUIDSFORMAT, &fmt));
	    if (i < 0) {
		xf86Msg(X_WARNING,
			"%s: cannot set mouse device to VUID mode: %s\n",
			pInfo->name, strerror(errno));
	    }
	    vuidMouseWheelInit(pInfo);
#ifdef HAVE_ABSOLUTE_MOUSE_SCALING
	    vuidMouseSendScreenSize(screenInfo.screens[0], pVuidMse);
#endif
	    xf86FlushInput(pInfo->fd);

	    /* Allocate here so we don't alloc in ReadInput which may be called
	       from SIGIO handler. */
	    if (pVuidMse->remove_timer == NULL) {
		pVuidMse->remove_timer = TimerSet(pVuidMse->remove_timer,
						  0, 0, NULL, NULL);
	    }
	}
	break;

    case DEVICE_OFF:
    case DEVICE_CLOSE:
	if (pInfo->fd != -1) {
	    if (pVuidMse->strmod) {
		SYSCALL(i = ioctl(pInfo->fd, I_POP, pVuidMse->strmod));
		if (i == -1) {
		    xf86Msg(X_WARNING,
		      "%s: cannot pop module '%s' off mouse device: %s\n",
		      pInfo->name, pVuidMse->strmod, strerror(errno));
		}
	    }
	}
	if (pVuidMse->remove_timer) {
	    TimerFree(pVuidMse->remove_timer);
	    pVuidMse->remove_timer = NULL;
	}
	ret = pVuidMse->wrapped_device_control(pPointer, what);
	break;

    default: /* Should never be called, but just in case */
	ret = pVuidMse->wrapped_device_control(pPointer, what);
	break;
    }
    return ret;
}

static Bool
sunMousePreInit(InputInfoPtr pInfo, const char *protocol, int flags)
{
    /* The protocol is guaranteed to be one of the internalNames[] */
    if (xf86NameCmp(protocol, "VUID") == 0) {
	return vuidPreInit(pInfo, protocol, flags);
    }
    return TRUE;
}

static const char **
BuiltinNames(void)
{
    return internalNames;
}

static Bool
CheckProtocol(const char *protocol)
{
    int i;

    for (i = 0; internalNames[i]; i++)
	if (xf86NameCmp(protocol, internalNames[i]) == 0)
	    return TRUE;

    return FALSE;
}

static const char *
DefaultProtocol(void)
{
    return "Auto";
}

static Bool
solarisMouseAutoProbe(InputInfoPtr pInfo, const char **protocol,
	const char **device)
{
    const char **pdev, **pproto;
    int fd = -1;
    Bool found;
    char *strmod;

    if (*device == NULL) {
	/* Check to see if xorg.conf or HAL specified a device to use */
	*device = xf86CheckStrOption(pInfo->options, "Device", NULL);
	if (*device == NULL) {
	    *device = xf86CheckStrOption(pInfo->options, "Device", NULL);
	}
    }

    if (*device != NULL) {
	strmod = xf86CheckStrOption(pInfo->options, "StreamsModule", NULL);
	if (strmod == NULL) {
	    strmod = xf86CheckStrOption(pInfo->options, "StreamsModule", NULL);
	}
	if (strmod) {
	    /* if a device name is already known, and a StreamsModule is
	       specified to convert events to VUID, then we don't need to
	       probe further */
	    *protocol = "VUID";
	    return TRUE;
	}
    }


    for (pdev = solarisMouseDevs; *pdev; pdev += 2) {
	pproto = pdev + 1;
	if ((*protocol != NULL) && (strcmp(*protocol, "Auto") != 0) &&
	  (*pproto != NULL) && (strcmp(*pproto, *protocol) != 0)) {
	    continue;
	}
	if ((*device != NULL) && (strcmp(*device, *pdev) != 0)) {
	    continue;
	}
        SYSCALL (fd = open(*pdev, O_RDWR | O_NONBLOCK));
	if (fd == -1) {
#ifdef DEBUG
	    ErrorF("Cannot open %s (%s)\n", pdev, strerror(errno));
#endif
	} else {
	    found = TRUE;
	    if ((*pproto != NULL) && (strcmp(*pproto, "VUID") == 0)) {
		int i, r;
		SYSCALL(r = ioctl(fd, VUIDGFORMAT, &i));
    		if (r < 0) {
		    found = FALSE;
		}
	    }
	    close(fd);
	    if (found == TRUE) {
		if (*pproto != NULL) {
		    *protocol = *pproto;
		}
		*device = *pdev;
		return TRUE;
	    }
	}
    }
    return FALSE;
}

static const char *
SetupAuto(InputInfoPtr pInfo, int *protoPara)
{
    const char *pdev = NULL;
    const char *pproto = NULL;
    MouseDevPtr pMse = pInfo->private;

    if (pInfo->fd == -1) {
	/* probe to find device/protocol to use */
	if (solarisMouseAutoProbe(pInfo, &pproto, &pdev) != FALSE) {
	    /* Set the Device option. */
	    pInfo->options =
	     xf86AddNewOption(pInfo->options, "Device", pdev);
	    xf86Msg(X_INFO, "%s: Setting Device option to \"%s\"\n",
	      pInfo->name, pdev);
	}
    } else if (pMse->protocolID == PROT_AUTO) {
	pdev = xf86CheckStrOption(pInfo->options,
		"Device", NULL);
	solarisMouseAutoProbe(pInfo, &pproto, &pdev);
    }
    return pproto;
}

static const char *
FindDevice(InputInfoPtr pInfo, const char *protocol, int flags)
{
    const char *pdev = NULL;
    const char *pproto = protocol;

    if (solarisMouseAutoProbe(pInfo, &pproto, &pdev) != FALSE) {
	/* Set the Device option. */
	pInfo->options =
	  xf86AddNewOption(pInfo->options, "Device", pdev);
	xf86Msg(X_INFO, "%s: Setting Device option to \"%s\"\n",
	  pInfo->name, pdev);
    }
    return pdev;
}

static int
SupportedInterfaces(void)
{
    /* XXX This needs to be checked. */
    return MSE_SERIAL | MSE_BUS | MSE_PS2 | MSE_AUTO | MSE_XPS2 | MSE_MISC;
}

OSMouseInfoPtr
OSMouseInit(int flags)
{
    OSMouseInfoPtr p;

    p = calloc(sizeof(OSMouseInfoRec), 1);
    if (!p)
	return NULL;
    p->SupportedInterfaces = SupportedInterfaces;
    p->BuiltinNames = BuiltinNames;
    p->CheckProtocol = CheckProtocol;
    p->PreInit = sunMousePreInit;
    p->DefaultProtocol = DefaultProtocol;
    p->SetupAuto = SetupAuto;
    p->FindDevice = FindDevice;

    return p;
}