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xserver-multidpi/hw/xfree86/common/xf86.h
Dave Airlie cf66471353 xfree86: use udev to provide device enumeration for kms devices (v10) 
On Linux in order for future hotplug work, we are required to interface
to udev to detect device creation/removal. In order to try and get
some earlier testing on this, this patch adds the ability to use
udev for device enumeration on Linux.

At startup the list of drm/kms devices is probed and this info is
used to load drivers.

A new driver probing method is introduced that passes the udev
device info to the driver for probing.

The probing integrates with the pci probing code and will fallback
to the pci probe and old school probe functions in turn.

The flags parameter to the probe function will be used later
to provide hotplug and gpu screen flags for the driver to behave
in a different way.

This patch changes the driver ABI, all drivers should at least
be set with a NULL udev probe function after this commit.

v2: rename to platform bus, now with 100% less udev specific,

this version passes config_odev_attribs around which are an array
of id/string pairs, then the udev code can attach the set of attribs
it understands, the OS specific code can attach its attrib, and then
the core/drivers can lookup the required attribs.

also add MATCH_PCI_DEVICES macro.

This version is mainly to address concerns raised by ajax.

v3: Address comments from Peter.
fix whitespace that snuck in.
rework to use a linked list with some core functions that
xf86 wraps.

v4: add free list, fix struct whitespace.
ajax this address most of your issues?

v5: drop probe ifdef, fix logic issue

v6: some overhaul after more testing.

Implement primaryBus for platform devices.
document hotplug.h dev attribs - drop sysname attrib
fix build with udev kms disabled
make probing work like the PCI probe code,
   match against bus id if one exists, or primary device.

RFC: add new bus id support "PLAT:syspath". we probably
want to match on this a bit different, or use a different
property maybe. I was mainly wanting this for use with
specifying usb devices in xorg.conf directly, but PLAT:path
could also work I suppose.

v6.1: add missing noop platform function

v7: fix two interactions with pci probing and slot claiming, prevents
pci and platform trying to load two drivers for same slot.

v8: test with zaphod mode on -ati driver, fixup resulting issue
clean up common probe code into another function, change busid
matching to allow dropping end of strings.

v9: fix platform probing logic so it actually works.
v9.1: fix pdev init to NULL properly.

v10: address most of Keith's concerns.

v4 was thanks to Reviewed-by: Adam Jackson <ajax@redhat.com>
v5 was Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-07-06 10:20:19 +01:00

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/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 copyright holder(s)
* and author(s) 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 copyright holder(s) and author(s).
*/
/*
* This file contains declarations for public XFree86 functions and variables,
* and definitions of public macros.
*
* "public" means available to video drivers.
*/
#ifndef _XF86_H
#define _XF86_H
#if HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#elif HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "xf86str.h"
#include "xf86Opt.h"
#include <X11/Xfuncproto.h>
#include <stdarg.h>
#ifdef RANDR
#include <X11/extensions/randr.h>
#endif
#include "propertyst.h"
/* General parameters */
extern _X_EXPORT int xf86DoConfigure;
extern _X_EXPORT int xf86DoShowOptions;
extern _X_EXPORT Bool xf86DoConfigurePass1;
extern _X_EXPORT DevPrivateKeyRec xf86ScreenKeyRec;
#define xf86ScreenKey (&xf86ScreenKeyRec)
extern _X_EXPORT DevPrivateKeyRec xf86CreateRootWindowKeyRec;
#define xf86CreateRootWindowKey (&xf86CreateRootWindowKeyRec)
extern _X_EXPORT ScrnInfoPtr *xf86Screens; /* List of pointers to ScrnInfoRecs */
extern _X_EXPORT const unsigned char byte_reversed[256];
extern _X_EXPORT Bool fbSlotClaimed;
#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
extern _X_EXPORT Bool sbusSlotClaimed;
#endif
#if defined(XSERVER_PLATFORM_BUS)
extern _X_EXPORT int platformSlotClaimed;
#endif
extern _X_EXPORT confDRIRec xf86ConfigDRI;
extern _X_EXPORT Bool xf86DRI2Enabled(void);
extern _X_EXPORT Bool VTSwitchEnabled; /* kbd driver */
#define XF86SCRNINFO(p) xf86ScreenToScrn(p)
#define XF86FLIP_PIXELS() \
do { \
if (xf86GetFlipPixels()) { \
pScreen->whitePixel = (pScreen->whitePixel) ? 0 : 1; \
pScreen->blackPixel = (pScreen->blackPixel) ? 0 : 1; \
} \
while (0)
#define BOOLTOSTRING(b) ((b) ? "TRUE" : "FALSE")
#define PIX24TOBPP(p) (((p) == Pix24Use24) ? 24 : \
(((p) == Pix24Use32) ? 32 : 0))
/* Function Prototypes */
#ifndef _NO_XF86_PROTOTYPES
/* PCI related */
#ifdef XSERVER_LIBPCIACCESS
#include <pciaccess.h>
extern _X_EXPORT int pciSlotClaimed;
extern _X_EXPORT Bool xf86CheckPciSlot(const struct pci_device *);
extern _X_EXPORT int xf86ClaimPciSlot(struct pci_device *, DriverPtr drvp,
int chipset, GDevPtr dev, Bool active);
extern _X_EXPORT void xf86UnclaimPciSlot(struct pci_device *, GDevPtr dev);
extern _X_EXPORT Bool xf86ParsePciBusString(const char *busID, int *bus,
int *device, int *func);
extern _X_EXPORT Bool xf86ComparePciBusString(const char *busID, int bus,
int device, int func);
extern _X_EXPORT Bool xf86IsPrimaryPci(struct pci_device *pPci);
extern _X_EXPORT Bool xf86CheckPciMemBase(struct pci_device *pPci,
memType base);
extern _X_EXPORT struct pci_device *xf86GetPciInfoForEntity(int entityIndex);
extern _X_EXPORT int xf86MatchPciInstances(const char *driverName,
int vendorID, SymTabPtr chipsets,
PciChipsets * PCIchipsets,
GDevPtr * devList, int numDevs,
DriverPtr drvp, int **foundEntities);
extern _X_EXPORT ScrnInfoPtr xf86ConfigPciEntity(ScrnInfoPtr pScrn,
int scrnFlag, int entityIndex,
PciChipsets * p_chip,
void *dummy, EntityProc init,
EntityProc enter,
EntityProc leave,
pointer private);
/* Obsolete! don't use */
extern _X_EXPORT Bool xf86ConfigActivePciEntity(ScrnInfoPtr pScrn,
int entityIndex,
PciChipsets * p_chip,
void *dummy, EntityProc init,
EntityProc enter,
EntityProc leave,
pointer private);
#else
#define xf86VGAarbiterInit() do {} while (0)
#define xf86VGAarbiterFini() do {} while (0)
#define xf86VGAarbiterLock(x) do {} while (0)
#define xf86VGAarbiterUnlock(x) do {} while (0)
#define xf86VGAarbiterScrnInit(x) do {} while (0)
#define xf86VGAarbiterDeviceDecodes() do {} while (0)
#define xf86VGAarbiterWrapFunctions() do {} while (0)
#endif
/* xf86Bus.c */
extern _X_EXPORT int xf86GetFbInfoForScreen(int scrnIndex);
extern _X_EXPORT int xf86ClaimFbSlot(DriverPtr drvp, int chipset, GDevPtr dev,
Bool active);
extern _X_EXPORT int xf86ClaimNoSlot(DriverPtr drvp, int chipset, GDevPtr dev,
Bool active);
extern _X_EXPORT Bool xf86DriverHasEntities(DriverPtr drvp);
extern _X_EXPORT void xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex);
extern _X_EXPORT void xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn,
int entityIndex,
int instance);
extern _X_EXPORT int xf86GetNumEntityInstances(int entityIndex);
extern _X_EXPORT GDevPtr xf86GetDevFromEntity(int entityIndex, int instance);
extern _X_EXPORT void xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn,
int entityIndex);
extern _X_EXPORT EntityInfoPtr xf86GetEntityInfo(int entityIndex);
extern _X_EXPORT Bool xf86SetEntityFuncs(int entityIndex, EntityProc init,
EntityProc enter, EntityProc leave,
pointer);
extern _X_EXPORT Bool xf86IsEntityPrimary(int entityIndex);
extern _X_EXPORT ScrnInfoPtr xf86FindScreenForEntity(int entityIndex);
extern _X_EXPORT int xf86GetLastScrnFlag(int entityIndex);
extern _X_EXPORT void xf86SetLastScrnFlag(int entityIndex, int scrnIndex);
extern _X_EXPORT Bool xf86IsEntityShared(int entityIndex);
extern _X_EXPORT void xf86SetEntityShared(int entityIndex);
extern _X_EXPORT Bool xf86IsEntitySharable(int entityIndex);
extern _X_EXPORT void xf86SetEntitySharable(int entityIndex);
extern _X_EXPORT Bool xf86IsPrimInitDone(int entityIndex);
extern _X_EXPORT void xf86SetPrimInitDone(int entityIndex);
extern _X_EXPORT void xf86ClearPrimInitDone(int entityIndex);
extern _X_EXPORT int xf86AllocateEntityPrivateIndex(void);
extern _X_EXPORT DevUnion *xf86GetEntityPrivate(int entityIndex, int privIndex);
/* xf86Configure.c */
extern _X_EXPORT GDevPtr xf86AddBusDeviceToConfigure(const char *driver,
BusType bus, void *busData,
int chipset);
/* xf86Cursor.c */
extern _X_EXPORT void xf86LockZoom(ScreenPtr pScreen, int lock);
extern _X_EXPORT void xf86InitViewport(ScrnInfoPtr pScr);
extern _X_EXPORT void xf86SetViewport(ScreenPtr pScreen, int x, int y);
extern _X_EXPORT void xf86ZoomViewport(ScreenPtr pScreen, int zoom);
extern _X_EXPORT Bool xf86SwitchMode(ScreenPtr pScreen, DisplayModePtr mode);
extern _X_EXPORT void *xf86GetPointerScreenFuncs(void);
extern _X_EXPORT void xf86InitOrigins(void);
extern _X_EXPORT void xf86ReconfigureLayout(void);
/* xf86cvt.c */
extern _X_EXPORT DisplayModePtr xf86CVTMode(int HDisplay, int VDisplay,
float VRefresh, Bool Reduced,
Bool Interlaced);
/* xf86DPMS.c */
extern _X_EXPORT Bool xf86DPMSInit(ScreenPtr pScreen, DPMSSetProcPtr set,
int flags);
#ifdef DPMSExtension
extern _X_EXPORT int DPMSSet(ClientPtr client, int level);
extern _X_EXPORT Bool DPMSSupported(void);
#endif
/* xf86DGA.c */
#ifdef XFreeXDGA
extern _X_EXPORT Bool DGAInit(ScreenPtr pScreen, DGAFunctionPtr funcs,
DGAModePtr modes, int num);
extern _X_EXPORT Bool DGAReInitModes(ScreenPtr pScreen, DGAModePtr modes,
int num);
extern _X_EXPORT xf86SetDGAModeProc xf86SetDGAMode;
#endif
/* xf86Events.c */
extern _X_EXPORT void SetTimeSinceLastInputEvent(void);
extern _X_EXPORT pointer xf86AddInputHandler(int fd, InputHandlerProc proc,
pointer data);
extern _X_EXPORT int xf86RemoveInputHandler(pointer handler);
extern _X_EXPORT void xf86DisableInputHandler(pointer handler);
extern _X_EXPORT void xf86EnableInputHandler(pointer handler);
extern _X_EXPORT pointer xf86AddGeneralHandler(int fd, InputHandlerProc proc,
pointer data);
extern _X_EXPORT int xf86RemoveGeneralHandler(pointer handler);
extern _X_EXPORT void xf86DisableGeneralHandler(pointer handler);
extern _X_EXPORT void xf86EnableGeneralHandler(pointer handler);
extern _X_EXPORT InputHandlerProc xf86SetConsoleHandler(InputHandlerProc
handler, pointer data);
extern _X_EXPORT void xf86InterceptSignals(int *signo);
extern _X_EXPORT void xf86InterceptSigIll(void (*sigillhandler) (void));
extern _X_EXPORT Bool xf86EnableVTSwitch(Bool new);
extern _X_EXPORT void xf86ProcessActionEvent(ActionEvent action, void *arg);
extern _X_EXPORT void xf86PrintBacktrace(void);
/* xf86Helper.c */
extern _X_EXPORT void xf86AddDriver(DriverPtr driver, pointer module,
int flags);
extern _X_EXPORT void xf86DeleteDriver(int drvIndex);
extern _X_EXPORT ScrnInfoPtr xf86AllocateScreen(DriverPtr drv, int flags);
extern _X_EXPORT void xf86DeleteScreen(ScrnInfoPtr pScrn);
extern _X_EXPORT int xf86AllocateScrnInfoPrivateIndex(void);
extern _X_EXPORT Bool xf86AddPixFormat(ScrnInfoPtr pScrn, int depth, int bpp,
int pad);
extern _X_EXPORT Bool xf86SetDepthBpp(ScrnInfoPtr scrp, int depth, int bpp,
int fbbpp, int depth24flags);
extern _X_EXPORT void xf86PrintDepthBpp(ScrnInfoPtr scrp);
extern _X_EXPORT Bool xf86SetWeight(ScrnInfoPtr scrp, rgb weight, rgb mask);
extern _X_EXPORT Bool xf86SetDefaultVisual(ScrnInfoPtr scrp, int visual);
extern _X_EXPORT Bool xf86SetGamma(ScrnInfoPtr scrp, Gamma newGamma);
extern _X_EXPORT void xf86SetDpi(ScrnInfoPtr pScrn, int x, int y);
extern _X_EXPORT void xf86SetBlackWhitePixels(ScreenPtr pScreen);
extern _X_EXPORT void xf86EnableDisableFBAccess(ScrnInfoPtr pScrn, Bool enable);
extern _X_EXPORT void
xf86VDrvMsgVerb(int scrnIndex, MessageType type, int verb,
const char *format, va_list args)
_X_ATTRIBUTE_PRINTF(4, 0);
extern _X_EXPORT void
xf86DrvMsgVerb(int scrnIndex, MessageType type, int verb,
const char *format, ...)
_X_ATTRIBUTE_PRINTF(4, 5);
extern _X_EXPORT void
xf86DrvMsg(int scrnIndex, MessageType type, const char *format, ...)
_X_ATTRIBUTE_PRINTF(3, 4);
extern _X_EXPORT void
xf86MsgVerb(MessageType type, int verb, const char *format, ...)
_X_ATTRIBUTE_PRINTF(3, 4);
extern _X_EXPORT void
xf86Msg(MessageType type, const char *format, ...)
_X_ATTRIBUTE_PRINTF(2, 3);
extern _X_EXPORT void
xf86ErrorFVerb(int verb, const char *format, ...)
_X_ATTRIBUTE_PRINTF(2, 3);
extern _X_EXPORT void
xf86ErrorF(const char *format, ...)
_X_ATTRIBUTE_PRINTF(1, 2);
extern _X_EXPORT const char *
xf86TokenToString(SymTabPtr table, int token);
extern _X_EXPORT int
xf86StringToToken(SymTabPtr table, const char *string);
extern _X_EXPORT void
xf86ShowClocks(ScrnInfoPtr scrp, MessageType from);
extern _X_EXPORT void
xf86PrintChipsets(const char *drvname, const char *drvmsg, SymTabPtr chips);
extern _X_EXPORT int
xf86MatchDevice(const char *drivername, GDevPtr ** driversectlist);
extern _X_EXPORT const char *
xf86GetVisualName(int visual);
extern _X_EXPORT int
xf86GetVerbosity(void);
extern _X_EXPORT Pix24Flags
xf86GetPix24(void);
extern _X_EXPORT int
xf86GetDepth(void);
extern _X_EXPORT rgb
xf86GetWeight(void);
extern _X_EXPORT Gamma
xf86GetGamma(void);
extern _X_EXPORT Bool
xf86GetFlipPixels(void);
extern _X_EXPORT const char *
xf86GetServerName(void);
extern _X_EXPORT Bool
xf86ServerIsExiting(void);
extern _X_EXPORT Bool
xf86ServerIsResetting(void);
extern _X_EXPORT Bool
xf86ServerIsInitialising(void);
extern _X_EXPORT Bool
xf86ServerIsOnlyDetecting(void);
extern _X_EXPORT Bool
xf86CaughtSignal(void);
extern _X_EXPORT Bool
xf86GetVidModeAllowNonLocal(void);
extern _X_EXPORT Bool
xf86GetVidModeEnabled(void);
extern _X_EXPORT Bool
xf86GetModInDevAllowNonLocal(void);
extern _X_EXPORT Bool
xf86GetModInDevEnabled(void);
extern _X_EXPORT Bool
xf86GetAllowMouseOpenFail(void);
extern _X_EXPORT void
xf86DisableRandR(void);
extern _X_EXPORT CARD32
xorgGetVersion(void);
extern _X_EXPORT CARD32
xf86GetModuleVersion(pointer module);
extern _X_EXPORT pointer
xf86LoadDrvSubModule(DriverPtr drv, const char *name);
extern _X_EXPORT pointer
xf86LoadSubModule(ScrnInfoPtr pScrn, const char *name);
extern _X_EXPORT pointer
xf86LoadOneModule(char *name, pointer optlist);
extern _X_EXPORT void
xf86UnloadSubModule(pointer mod);
extern _X_EXPORT Bool
xf86LoaderCheckSymbol(const char *name);
extern _X_EXPORT void
xf86SetBackingStore(ScreenPtr pScreen);
extern _X_EXPORT void
xf86SetSilkenMouse(ScreenPtr pScreen);
extern _X_EXPORT pointer
xf86FindXvOptions(ScrnInfoPtr pScrn, int adapt_index, char *port_name,
char **adaptor_name, pointer *adaptor_options);
extern _X_EXPORT void
xf86GetOS(const char **name, int *major, int *minor, int *teeny);
extern _X_EXPORT ScrnInfoPtr
xf86ConfigFbEntity(ScrnInfoPtr pScrn, int scrnFlag,
int entityIndex, EntityProc init,
EntityProc enter, EntityProc leave, pointer private);
extern _X_EXPORT Bool
xf86IsScreenPrimary(ScrnInfoPtr pScrn);
extern _X_EXPORT int
xf86RegisterRootWindowProperty(int ScrnIndex, Atom property, Atom type,
int format, unsigned long len, pointer value);
extern _X_EXPORT Bool
xf86IsUnblank(int mode);
/* xf86Init.c */
extern _X_EXPORT PixmapFormatPtr
xf86GetPixFormat(ScrnInfoPtr pScrn, int depth);
extern _X_EXPORT int
xf86GetBppFromDepth(ScrnInfoPtr pScrn, int depth);
/* xf86Mode.c */
extern _X_EXPORT int
xf86GetNearestClock(ScrnInfoPtr scrp, int freq, Bool allowDiv2,
int DivFactor, int MulFactor, int *divider);
extern _X_EXPORT const char *
xf86ModeStatusToString(ModeStatus status);
extern _X_EXPORT ModeStatus
xf86LookupMode(ScrnInfoPtr scrp, DisplayModePtr modep,
ClockRangePtr clockRanges, LookupModeFlags strategy);
extern _X_EXPORT ModeStatus
xf86CheckModeForMonitor(DisplayModePtr mode, MonPtr monitor);
extern _X_EXPORT ModeStatus
xf86InitialCheckModeForDriver(ScrnInfoPtr scrp, DisplayModePtr mode,
ClockRangePtr clockRanges,
LookupModeFlags strategy,
int maxPitch, int virtualX, int virtualY);
extern _X_EXPORT ModeStatus
xf86CheckModeForDriver(ScrnInfoPtr scrp, DisplayModePtr mode, int flags);
extern _X_EXPORT int
xf86ValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
char **modeNames, ClockRangePtr clockRanges,
int *linePitches, int minPitch, int maxPitch,
int minHeight, int maxHeight, int pitchInc,
int virtualX, int virtualY, int apertureSize,
LookupModeFlags strategy);
extern _X_EXPORT void
xf86DeleteMode(DisplayModePtr * modeList, DisplayModePtr mode);
extern _X_EXPORT void
xf86PruneDriverModes(ScrnInfoPtr scrp);
extern _X_EXPORT void
xf86SetCrtcForModes(ScrnInfoPtr scrp, int adjustFlags);
extern _X_EXPORT void
xf86PrintModes(ScrnInfoPtr scrp);
extern _X_EXPORT void
xf86ShowClockRanges(ScrnInfoPtr scrp, ClockRangePtr clockRanges);
extern _X_EXPORT double
xf86ModeHSync(const DisplayModeRec * mode);
extern _X_EXPORT double
xf86ModeVRefresh(const DisplayModeRec * mode);
extern _X_EXPORT void
xf86SetModeDefaultName(DisplayModePtr mode);
extern _X_EXPORT void
xf86SetModeCrtc(DisplayModePtr p, int adjustFlags);
extern _X_EXPORT DisplayModePtr
xf86DuplicateMode(const DisplayModeRec * pMode);
extern _X_EXPORT DisplayModePtr
xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList);
extern _X_EXPORT Bool
xf86ModesEqual(const DisplayModeRec * pMode1, const DisplayModeRec * pMode2);
extern _X_EXPORT void
xf86PrintModeline(int scrnIndex, DisplayModePtr mode);
extern _X_EXPORT DisplayModePtr
xf86ModesAdd(DisplayModePtr modes, DisplayModePtr new);
/* xf86Option.c */
extern _X_EXPORT void
xf86CollectOptions(ScrnInfoPtr pScrn, XF86OptionPtr extraOpts);
/* xf86RandR.c */
#ifdef RANDR
extern _X_EXPORT Bool
xf86RandRInit(ScreenPtr pScreen);
extern _X_EXPORT Rotation
xf86GetRotation(ScreenPtr pScreen);
extern _X_EXPORT Bool
xf86RandRSetNewVirtualAndDimensions(ScreenPtr pScreen,
int newvirtX, int newvirtY,
int newmmWidth, int newmmHeight,
Bool resetMode);
#endif
/* xf86VidModeExtentionInit.c */
extern _X_EXPORT Bool
VidModeExtensionInit(ScreenPtr pScreen);
/* convert ScreenPtr to ScrnInfoPtr */
extern _X_EXPORT ScrnInfoPtr xf86ScreenToScrn(ScreenPtr pScreen);
/* convert ScrnInfoPtr to ScreenPtr */
extern _X_EXPORT ScreenPtr xf86ScrnToScreen(ScrnInfoPtr pScrn);
#endif /* _NO_XF86_PROTOTYPES */
#define XF86_HAS_SCRN_CONV 1 /* define for drivers to use in api compat */
#define XF86_SCRN_INTERFACE 1 /* define for drivers to use in api compat */
#endif /* _XF86_H */
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