b37462b4da
The function was only initializing the boolean xf86ResAccessEnter, which couldn't get any other value in the life of the server. The only possible, though suspicious, code was in xf86AccessLeave(), which could be triggered if AbortDDX is called before xf86AccessInit(). Even so, such change is safety because no driver would have configured any entity leave procedure at this point. Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com> Reviewed-by: Adam Jackson <ajax@redhat.com>
669 lines
15 KiB
C
669 lines
15 KiB
C
/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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/*
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* This file contains the interfaces to the bus-specific code
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <X11/X.h>
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#include "os.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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/* Bus-specific headers */
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#include "xf86Bus.h"
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#define XF86_OS_PRIVS
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#include "xf86_OSproc.h"
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#include "xf86VGAarbiter.h"
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#include "Pci.h"
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/* Entity data */
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EntityPtr *xf86Entities = NULL; /* Bus slots claimed by drivers */
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int xf86NumEntities = 0;
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static int xf86EntityPrivateCount = 0;
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BusRec primaryBus = { BUS_NONE, { 0 } };
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static Bool doFramebufferMode = FALSE;
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/*
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* Call the bus probes relevant to the architecture.
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*
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* The only one available so far is for PCI and SBUS.
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*/
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void
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xf86BusProbe(void)
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{
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xf86PciProbe();
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#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
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xf86SbusProbe();
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#endif
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}
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/*
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* Determine what bus type the busID string represents. The start of the
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* bus-dependent part of the string is returned as retID.
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*/
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BusType
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StringToBusType(const char* busID, const char **retID)
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{
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char *p, *s;
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BusType ret = BUS_NONE;
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/* If no type field, Default to PCI */
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if (isdigit(busID[0])) {
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if (retID)
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*retID = busID;
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return BUS_PCI;
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}
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s = xstrdup(busID);
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p = strtok(s, ":");
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if (p == NULL || *p == 0) {
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free(s);
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return BUS_NONE;
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}
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if (!xf86NameCmp(p, "pci") || !xf86NameCmp(p, "agp"))
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ret = BUS_PCI;
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if (!xf86NameCmp(p, "sbus"))
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ret = BUS_SBUS;
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if (ret != BUS_NONE)
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if (retID)
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*retID = busID + strlen(p) + 1;
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free(s);
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return ret;
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}
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/*
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* Entity related code.
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*/
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void
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xf86EntityInit(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityInit) {
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xf86Entities[i]->entityInit(i,xf86Entities[i]->private);
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}
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}
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int
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xf86AllocateEntity(void)
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{
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xf86NumEntities++;
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xf86Entities = xnfrealloc(xf86Entities,
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sizeof(EntityPtr) * xf86NumEntities);
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xf86Entities[xf86NumEntities - 1] = xnfcalloc(1,sizeof(EntityRec));
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xf86Entities[xf86NumEntities - 1]->entityPrivates =
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xnfcalloc(sizeof(DevUnion) * xf86EntityPrivateCount, 1);
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return (xf86NumEntities - 1);
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}
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static void
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EntityEnter(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityEnter) {
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xf86Entities[i]->entityEnter(i,xf86Entities[i]->private);
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}
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}
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static void
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EntityLeave(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityLeave) {
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xf86Entities[i]->entityLeave(i,xf86Entities[i]->private);
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}
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}
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Bool
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xf86IsEntityPrimary(int entityIndex)
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{
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EntityPtr pEnt = xf86Entities[entityIndex];
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if (primaryBus.type != pEnt->bus.type) return FALSE;
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switch (pEnt->bus.type) {
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case BUS_PCI:
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return (pEnt->bus.id.pci == primaryBus.id.pci);
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case BUS_SBUS:
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return (pEnt->bus.id.sbus.fbNum == primaryBus.id.sbus.fbNum);
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default:
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return FALSE;
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}
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}
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Bool
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xf86SetEntityFuncs(int entityIndex, EntityProc init, EntityProc enter,
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EntityProc leave, pointer private)
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{
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if (entityIndex >= xf86NumEntities)
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return FALSE;
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xf86Entities[entityIndex]->entityInit = init;
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xf86Entities[entityIndex]->entityEnter = enter;
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xf86Entities[entityIndex]->entityLeave = leave;
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xf86Entities[entityIndex]->private = private;
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return TRUE;
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}
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Bool
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xf86DriverHasEntities(DriverPtr drvp)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++) {
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if (xf86Entities[i]->driver == drvp)
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return TRUE;
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}
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return FALSE;
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}
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void
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xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex)
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{
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if (entityIndex == -1)
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return;
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if (xf86Entities[entityIndex]->inUse &&
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!(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL)) {
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ErrorF("Requested Entity already in use!\n");
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return;
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}
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pScrn->numEntities++;
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pScrn->entityList = xnfrealloc(pScrn->entityList,
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pScrn->numEntities * sizeof(int));
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pScrn->entityList[pScrn->numEntities - 1] = entityIndex;
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xf86Entities[entityIndex]->inUse = TRUE;
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pScrn->entityInstanceList = xnfrealloc(pScrn->entityInstanceList,
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pScrn->numEntities * sizeof(int));
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pScrn->entityInstanceList[pScrn->numEntities - 1] = 0;
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pScrn->domainIOBase = xf86Entities[entityIndex]->domainIO;
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}
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void
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xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn, int entityIndex, int instance)
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{
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int i;
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if (entityIndex == -1 || entityIndex >= xf86NumEntities)
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return;
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for (i = 0; i < pScrn->numEntities; i++) {
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if (pScrn->entityList[i] == entityIndex) {
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pScrn->entityInstanceList[i] = instance;
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break;
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}
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}
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}
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/*
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* XXX This needs to be updated for the case where a single entity may have
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* instances associated with more than one screen.
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*/
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ScrnInfoPtr
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xf86FindScreenForEntity(int entityIndex)
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{
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int i,j;
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if (entityIndex == -1) return NULL;
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if (xf86Screens) {
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for (i = 0; i < xf86NumScreens; i++) {
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for (j = 0; j < xf86Screens[i]->numEntities; j++) {
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if ( xf86Screens[i]->entityList[j] == entityIndex )
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return (xf86Screens[i]);
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}
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}
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}
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return NULL;
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}
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void
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xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn, int entityIndex)
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{
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int i;
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for (i = 0; i < pScrn->numEntities; i++) {
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if (pScrn->entityList[i] == entityIndex) {
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for (i++; i < pScrn->numEntities; i++)
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pScrn->entityList[i-1] = pScrn->entityList[i];
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pScrn->numEntities--;
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xf86Entities[entityIndex]->inUse = FALSE;
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break;
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}
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}
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}
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/*
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* xf86ClearEntitiesForScreen() - called when a screen is deleted
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* to mark it's entities unused. Called by xf86DeleteScreen().
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*/
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void
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xf86ClearEntityListForScreen(int scrnIndex)
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{
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ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
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int i, entityIndex;
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if (pScrn->entityList == NULL || pScrn->numEntities == 0) return;
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for (i = 0; i < pScrn->numEntities; i++) {
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entityIndex = pScrn->entityList[i];
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xf86Entities[entityIndex]->inUse = FALSE;
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/* disable resource: call the disable function */
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}
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free(pScrn->entityList);
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free(pScrn->entityInstanceList);
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pScrn->entityList = NULL;
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pScrn->entityInstanceList = NULL;
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}
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/*
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* Add an extra device section (GDevPtr) to an entity.
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*/
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void
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xf86AddDevToEntity(int entityIndex, GDevPtr dev)
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{
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EntityPtr pEnt;
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if (entityIndex >= xf86NumEntities)
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return;
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pEnt = xf86Entities[entityIndex];
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pEnt->numInstances++;
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pEnt->devices = xnfrealloc(pEnt->devices,
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pEnt->numInstances * sizeof(GDevPtr));
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pEnt->devices[pEnt->numInstances - 1] = dev;
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dev->claimed = TRUE;
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}
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/*
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* xf86GetEntityInfo() -- This function hands information from the
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* EntityRec struct to the drivers. The EntityRec structure itself
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* remains invisible to the driver.
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*/
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EntityInfoPtr
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xf86GetEntityInfo(int entityIndex)
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{
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EntityInfoPtr pEnt;
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int i;
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if (entityIndex == -1)
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return NULL;
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if (entityIndex >= xf86NumEntities)
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return NULL;
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pEnt = xnfcalloc(1,sizeof(EntityInfoRec));
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pEnt->index = entityIndex;
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pEnt->location = xf86Entities[entityIndex]->bus;
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pEnt->active = xf86Entities[entityIndex]->active;
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pEnt->chipset = xf86Entities[entityIndex]->chipset;
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pEnt->driver = xf86Entities[entityIndex]->driver;
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if ( (xf86Entities[entityIndex]->devices) &&
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(xf86Entities[entityIndex]->devices[0]) ) {
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for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
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if (xf86Entities[entityIndex]->devices[i]->screen == 0)
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break;
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pEnt->device = xf86Entities[entityIndex]->devices[i];
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} else
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pEnt->device = NULL;
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return pEnt;
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}
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int
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xf86GetNumEntityInstances(int entityIndex)
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{
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if (entityIndex >= xf86NumEntities)
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return -1;
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return xf86Entities[entityIndex]->numInstances;
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}
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GDevPtr
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xf86GetDevFromEntity(int entityIndex, int instance)
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{
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int i;
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/* We might not use AddDevtoEntity */
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if ( (!xf86Entities[entityIndex]->devices) ||
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(!xf86Entities[entityIndex]->devices[0]) )
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return NULL;
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if (entityIndex >= xf86NumEntities ||
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instance >= xf86Entities[entityIndex]->numInstances)
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return NULL;
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for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
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if (xf86Entities[entityIndex]->devices[i]->screen == instance)
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break;
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return xf86Entities[entityIndex]->devices[i];
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}
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/*
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* xf86AccessEnter() -- gets called to save the text mode VGA IO
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* resources when reentering the server after a VT switch.
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*/
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void
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xf86AccessEnter(void)
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{
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return;
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/*
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* on enter we simply disable routing of special resources
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* to any bus and let the RAC code to "open" the right bridges.
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*/
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EntityEnter();
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xf86EnterServerState(SETUP);
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}
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|
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/*
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* xf86AccessLeave() -- prepares access for and calls the
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* entityLeave() functions.
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* xf86AccessLeaveState() --- gets called to restore the
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* access to the VGA IO resources when switching VT or on
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* server exit.
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* This was split to call xf86AccessLeaveState() from
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* ddxGiveUp().
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*/
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void
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xf86AccessLeave(void)
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{
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return;
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EntityLeave();
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}
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|
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/*
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* xf86EnableAccess() -- enable access to controlled resources.
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* To reduce latency when switching access the ScrnInfoRec has
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* a linked list of the EntityAccPtr of all screen entities.
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*/
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/*
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* switching access needs to be done in te following oder:
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* disable
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* 1. disable old entity
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* 2. reroute bus
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* 3. enable new entity
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* Otherwise resources needed for access control might be shadowed
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* by other resources!
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*/
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void
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xf86EnableAccess(ScrnInfoPtr pScrn)
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{
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DebugF("Enable access %i\n",pScrn->scrnIndex);
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return;
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}
|
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|
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/*
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* xf86EnterServerState() -- set state the server is in.
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*/
|
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|
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typedef enum { TRI_UNSET, TRI_TRUE, TRI_FALSE } TriState;
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|
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static void
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SetSIGIOForState(xf86State state)
|
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{
|
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static int sigio_state;
|
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static TriState sigio_blocked = TRI_UNSET;
|
|
|
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if ((state == SETUP) && (sigio_blocked != TRI_TRUE)) {
|
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sigio_state = xf86BlockSIGIO();
|
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sigio_blocked = TRI_TRUE;
|
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} else if ((state == OPERATING) && (sigio_blocked != TRI_UNSET)) {
|
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xf86UnblockSIGIO(sigio_state);
|
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sigio_blocked = TRI_FALSE;
|
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}
|
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}
|
|
|
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void
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xf86EnterServerState(xf86State state)
|
|
{
|
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/*
|
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* This is a good place to block SIGIO during SETUP state.
|
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* SIGIO should be blocked in SETUP state otherwise (u)sleep()
|
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* might get interrupted early.
|
|
* We take care not to call xf86BlockSIGIO() twice.
|
|
*/
|
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SetSIGIOForState(state);
|
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if (state == SETUP)
|
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DebugF("Entering SETUP state\n");
|
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else
|
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DebugF("Entering OPERATING state\n");
|
|
|
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return;
|
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}
|
|
|
|
/*
|
|
* xf86PostProbe() -- Allocate all non conflicting resources
|
|
* This function gets called by xf86Init().
|
|
*/
|
|
void
|
|
xf86PostProbe(void)
|
|
{
|
|
if (fbSlotClaimed) {
|
|
if (pciSlotClaimed
|
|
#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
|
|
|| sbusSlotClaimed
|
|
#endif
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) {
|
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FatalError("Cannot run in framebuffer mode. Please specify busIDs "
|
|
" for all framebuffer devices\n");
|
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return;
|
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} else {
|
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xf86Msg(X_INFO,"Running in FRAMEBUFFER Mode\n");
|
|
doFramebufferMode = TRUE;
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86PostScreenInit(void)
|
|
{
|
|
if (doFramebufferMode) {
|
|
SetSIGIOForState(OPERATING);
|
|
return;
|
|
}
|
|
|
|
xf86VGAarbiterWrapFunctions();
|
|
|
|
DebugF("PostScreenInit generation: %i\n",serverGeneration);
|
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xf86EnterServerState(OPERATING);
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}
|
|
|
|
/*
|
|
* xf86FindPrimaryDevice() - Find the display device which
|
|
* was active when the server was started.
|
|
*/
|
|
void
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|
xf86FindPrimaryDevice(void)
|
|
{
|
|
if (primaryBus.type != BUS_NONE) {
|
|
char *bus;
|
|
char loc[16];
|
|
|
|
switch (primaryBus.type) {
|
|
case BUS_PCI:
|
|
bus = "PCI";
|
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snprintf(loc, sizeof(loc), " %2.2x@%2.2x:%2.2x:%1.1x",
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primaryBus.id.pci->bus,
|
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primaryBus.id.pci->domain,
|
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primaryBus.id.pci->dev,
|
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primaryBus.id.pci->func);
|
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break;
|
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case BUS_SBUS:
|
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bus = "SBUS";
|
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snprintf(loc, sizeof(loc), " %2.2x", primaryBus.id.sbus.fbNum);
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break;
|
|
default:
|
|
bus = "";
|
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loc[0] = '\0';
|
|
}
|
|
|
|
xf86MsgVerb(X_INFO, 2, "Primary Device is: %s%s\n",bus,loc);
|
|
}
|
|
}
|
|
|
|
int
|
|
xf86GetLastScrnFlag(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
return(xf86Entities[entityIndex]->lastScrnFlag);
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86SetLastScrnFlag(int entityIndex, int scrnIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->lastScrnFlag = scrnIndex;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
xf86IsEntityShared(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
if(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL) {
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
xf86SetEntityShared(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->entityProp |= IS_SHARED_ACCEL;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
xf86IsEntitySharable(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
if(xf86Entities[entityIndex]->entityProp & ACCEL_IS_SHARABLE) {
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
xf86SetEntitySharable(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->entityProp |= ACCEL_IS_SHARABLE;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
xf86IsPrimInitDone(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
if(xf86Entities[entityIndex]->entityProp & SA_PRIM_INIT_DONE) {
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
xf86SetPrimInitDone(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->entityProp |= SA_PRIM_INIT_DONE;
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86ClearPrimInitDone(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->entityProp &= ~SA_PRIM_INIT_DONE;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Allocate a private in the entities.
|
|
*/
|
|
|
|
int
|
|
xf86AllocateEntityPrivateIndex(void)
|
|
{
|
|
int idx, i;
|
|
EntityPtr pEnt;
|
|
DevUnion *nprivs;
|
|
|
|
idx = xf86EntityPrivateCount++;
|
|
for (i = 0; i < xf86NumEntities; i++) {
|
|
pEnt = xf86Entities[i];
|
|
nprivs = xnfrealloc(pEnt->entityPrivates,
|
|
xf86EntityPrivateCount * sizeof(DevUnion));
|
|
/* Zero the new private */
|
|
bzero(&nprivs[idx], sizeof(DevUnion));
|
|
pEnt->entityPrivates = nprivs;
|
|
}
|
|
return idx;
|
|
}
|
|
|
|
DevUnion *
|
|
xf86GetEntityPrivate(int entityIndex, int privIndex)
|
|
{
|
|
if (entityIndex >= xf86NumEntities || privIndex >= xf86EntityPrivateCount)
|
|
return NULL;
|
|
|
|
return &(xf86Entities[entityIndex]->entityPrivates[privIndex]);
|
|
}
|
|
|