300 lines
7.2 KiB
C
300 lines
7.2 KiB
C
/*
|
|
* Copyright (c) 1993-2003 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).
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#ifdef __UNIXOS2__
|
|
# define I_NEED_OS2_H
|
|
#endif
|
|
#include <X11/X.h>
|
|
#include "input.h"
|
|
#include "scrnintstr.h"
|
|
|
|
#include "xf86.h"
|
|
#include "xf86Priv.h"
|
|
#include "xf86_OSlib.h"
|
|
#include "xf86OSpriv.h"
|
|
|
|
/*
|
|
* This file contains the common part of the video memory mapping functions
|
|
*/
|
|
|
|
/*
|
|
* Get a piece of the ScrnInfoRec. At the moment, this is only used to hold
|
|
* the MTRR option information, but it is likely to be expanded if we do
|
|
* auto unmapping of memory at VT switch.
|
|
*
|
|
*/
|
|
|
|
typedef struct {
|
|
unsigned long physBase;
|
|
unsigned long size;
|
|
pointer virtBase;
|
|
pointer mtrrInfo;
|
|
int flags;
|
|
} MappingRec, *MappingPtr;
|
|
|
|
typedef struct {
|
|
int numMappings;
|
|
MappingPtr * mappings;
|
|
Bool mtrrEnabled;
|
|
MessageType mtrrFrom;
|
|
Bool mtrrOptChecked;
|
|
ScrnInfoPtr pScrn;
|
|
} VidMapRec, *VidMapPtr;
|
|
|
|
static int vidMapIndex = -1;
|
|
|
|
#define VIDMAPPTR(p) ((VidMapPtr)((p)->privates[vidMapIndex].ptr))
|
|
|
|
static VidMemInfo vidMemInfo = {FALSE, };
|
|
static VidMapRec vidMapRec = {0, NULL, TRUE, X_DEFAULT, FALSE, NULL};
|
|
|
|
static VidMapPtr
|
|
getVidMapRec(int scrnIndex)
|
|
{
|
|
VidMapPtr vp;
|
|
ScrnInfoPtr pScrn;
|
|
|
|
if ((scrnIndex < 0) ||
|
|
!(pScrn = xf86Screens[scrnIndex]))
|
|
return &vidMapRec;
|
|
|
|
if (vidMapIndex < 0)
|
|
vidMapIndex = xf86AllocateScrnInfoPrivateIndex();
|
|
|
|
if (VIDMAPPTR(pScrn) != NULL)
|
|
return VIDMAPPTR(pScrn);
|
|
|
|
vp = pScrn->privates[vidMapIndex].ptr = xnfcalloc(sizeof(VidMapRec), 1);
|
|
vp->mtrrEnabled = TRUE; /* default to enabled */
|
|
vp->mtrrFrom = X_DEFAULT;
|
|
vp->mtrrOptChecked = FALSE;
|
|
vp->pScrn = pScrn;
|
|
return vp;
|
|
}
|
|
|
|
static MappingPtr
|
|
newMapping(VidMapPtr vp)
|
|
{
|
|
vp->mappings = xnfrealloc(vp->mappings, sizeof(MappingPtr) *
|
|
(vp->numMappings + 1));
|
|
vp->mappings[vp->numMappings] = xnfcalloc(sizeof(MappingRec), 1);
|
|
return vp->mappings[vp->numMappings++];
|
|
}
|
|
|
|
static MappingPtr
|
|
findMapping(VidMapPtr vp, pointer vbase, unsigned long size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < vp->numMappings; i++) {
|
|
if (vp->mappings[i]->virtBase == vbase &&
|
|
vp->mappings[i]->size == size)
|
|
return vp->mappings[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
removeMapping(VidMapPtr vp, MappingPtr mp)
|
|
{
|
|
int i, found = 0;
|
|
|
|
for (i = 0; i < vp->numMappings; i++) {
|
|
if (vp->mappings[i] == mp) {
|
|
found = 1;
|
|
xfree(vp->mappings[i]);
|
|
} else if (found) {
|
|
vp->mappings[i - 1] = vp->mappings[i];
|
|
}
|
|
}
|
|
vp->numMappings--;
|
|
vp->mappings[vp->numMappings] = NULL;
|
|
}
|
|
|
|
enum { OPTION_MTRR };
|
|
static const OptionInfoRec opts[] =
|
|
{
|
|
{ OPTION_MTRR, "mtrr", OPTV_BOOLEAN, {0}, FALSE },
|
|
{ -1, NULL, OPTV_NONE, {0}, FALSE }
|
|
};
|
|
|
|
static void
|
|
checkMtrrOption(VidMapPtr vp)
|
|
{
|
|
if (!vp->mtrrOptChecked && vp->pScrn && vp->pScrn->options != NULL) {
|
|
OptionInfoPtr options;
|
|
|
|
options = xnfalloc(sizeof(opts));
|
|
(void)memcpy(options, opts, sizeof(opts));
|
|
xf86ProcessOptions(vp->pScrn->scrnIndex, vp->pScrn->options,
|
|
options);
|
|
if (xf86GetOptValBool(options, OPTION_MTRR, &vp->mtrrEnabled))
|
|
vp->mtrrFrom = X_CONFIG;
|
|
xfree(options);
|
|
vp->mtrrOptChecked = TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86MakeNewMapping(int ScreenNum, int Flags, unsigned long Base, unsigned long Size, pointer Vbase)
|
|
{
|
|
VidMapPtr vp;
|
|
MappingPtr mp;
|
|
|
|
vp = getVidMapRec(ScreenNum);
|
|
mp = newMapping(vp);
|
|
mp->physBase = Base;
|
|
mp->size = Size;
|
|
mp->virtBase = Vbase;
|
|
mp->flags = Flags;
|
|
}
|
|
|
|
void
|
|
xf86InitVidMem(void)
|
|
{
|
|
if (!vidMemInfo.initialised) {
|
|
memset(&vidMemInfo, 0, sizeof(VidMemInfo));
|
|
xf86OSInitVidMem(&vidMemInfo);
|
|
}
|
|
}
|
|
|
|
_X_EXPORT pointer
|
|
xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size)
|
|
{
|
|
pointer vbase = NULL;
|
|
VidMapPtr vp;
|
|
MappingPtr mp;
|
|
|
|
if (((Flags & VIDMEM_FRAMEBUFFER) &&
|
|
(Flags & (VIDMEM_MMIO | VIDMEM_MMIO_32BIT))))
|
|
FatalError("Mapping memory with more than one type\n");
|
|
|
|
xf86InitVidMem();
|
|
if (!vidMemInfo.initialised || !vidMemInfo.mapMem)
|
|
return NULL;
|
|
|
|
vbase = vidMemInfo.mapMem(ScreenNum, Base, Size, Flags);
|
|
|
|
if (!vbase || vbase == (pointer)-1)
|
|
return NULL;
|
|
|
|
vp = getVidMapRec(ScreenNum);
|
|
mp = newMapping(vp);
|
|
mp->physBase = Base;
|
|
mp->size = Size;
|
|
mp->virtBase = vbase;
|
|
mp->flags = Flags;
|
|
|
|
/*
|
|
* Check the "mtrr" option even when MTRR isn't supported to avoid
|
|
* warnings about unrecognised options.
|
|
*/
|
|
checkMtrrOption(vp);
|
|
|
|
if (vp->mtrrEnabled && vidMemInfo.setWC) {
|
|
if (Flags & (VIDMEM_MMIO | VIDMEM_MMIO_32BIT))
|
|
mp->mtrrInfo =
|
|
vidMemInfo.setWC(ScreenNum, Base, Size, FALSE,
|
|
vp->mtrrFrom);
|
|
else if (Flags & VIDMEM_FRAMEBUFFER)
|
|
mp->mtrrInfo =
|
|
vidMemInfo.setWC(ScreenNum, Base, Size, TRUE,
|
|
vp->mtrrFrom);
|
|
}
|
|
return vbase;
|
|
}
|
|
|
|
_X_EXPORT void
|
|
xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
|
|
{
|
|
VidMapPtr vp;
|
|
MappingPtr mp;
|
|
|
|
if (!vidMemInfo.initialised || !vidMemInfo.unmapMem) {
|
|
xf86DrvMsg(ScreenNum, X_WARNING,
|
|
"xf86UnMapVidMem() called before xf86MapVidMem()\n");
|
|
return;
|
|
}
|
|
|
|
vp = getVidMapRec(ScreenNum);
|
|
mp = findMapping(vp, Base, Size);
|
|
if (!mp) {
|
|
xf86DrvMsg(ScreenNum, X_WARNING,
|
|
"xf86UnMapVidMem: cannot find region for [%p,0x%lx]\n",
|
|
Base, Size);
|
|
return;
|
|
}
|
|
if (vp->mtrrEnabled && vidMemInfo.undoWC && mp)
|
|
vidMemInfo.undoWC(ScreenNum, mp->mtrrInfo);
|
|
|
|
vidMemInfo.unmapMem(ScreenNum, Base, Size);
|
|
removeMapping(vp, mp);
|
|
}
|
|
|
|
_X_EXPORT Bool
|
|
xf86CheckMTRR(int ScreenNum)
|
|
{
|
|
VidMapPtr vp = getVidMapRec(ScreenNum);
|
|
|
|
/*
|
|
* Check the "mtrr" option even when MTRR isn't supported to avoid
|
|
* warnings about unrecognised options.
|
|
*/
|
|
checkMtrrOption(vp);
|
|
|
|
if (vp->mtrrEnabled && vidMemInfo.setWC)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
_X_EXPORT Bool
|
|
xf86LinearVidMem()
|
|
{
|
|
xf86InitVidMem();
|
|
return vidMemInfo.linearSupported;
|
|
}
|
|
|
|
_X_EXPORT void
|
|
xf86MapReadSideEffects(int ScreenNum, int Flags, pointer base,
|
|
unsigned long Size)
|
|
{
|
|
if (!(Flags & VIDMEM_READSIDEEFFECT))
|
|
return;
|
|
|
|
if (!vidMemInfo.initialised || !vidMemInfo.readSideEffects)
|
|
return;
|
|
|
|
vidMemInfo.readSideEffects(ScreenNum, base, Size);
|
|
}
|
|
|