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-rw-r--r--xorg-server/hw/xfree86/common/xf86Bus.c1366
1 files changed, 683 insertions, 683 deletions
diff --git a/xorg-server/hw/xfree86/common/xf86Bus.c b/xorg-server/hw/xfree86/common/xf86Bus.c
index 9d243c172..5c1668644 100644
--- a/xorg-server/hw/xfree86/common/xf86Bus.c
+++ b/xorg-server/hw/xfree86/common/xf86Bus.c
@@ -1,683 +1,683 @@
-/*
- * 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 the interfaces to the bus-specific code
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <ctype.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <X11/X.h>
-#include "os.h"
-#include "xf86.h"
-#include "xf86Priv.h"
-
-/* Bus-specific headers */
-
-#include "xf86Bus.h"
-
-#define XF86_OS_PRIVS
-#include "xf86_OSproc.h"
-#include "xf86VGAarbiter.h"
-
-#include "Pci.h"
-
-/* Entity data */
-EntityPtr *xf86Entities = NULL; /* Bus slots claimed by drivers */
-int xf86NumEntities = 0;
-static int xf86EntityPrivateCount = 0;
-
-BusRec primaryBus = { BUS_NONE, { 0 } };
-
-static Bool xf86ResAccessEnter = FALSE;
-
-static Bool doFramebufferMode = FALSE;
-
-/*
- * Call the bus probes relevant to the architecture.
- *
- * The only one available so far is for PCI and SBUS.
- */
-
-void
-xf86BusProbe(void)
-{
- xf86PciProbe();
-#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
- xf86SbusProbe();
-#endif
-}
-
-/*
- * Determine what bus type the busID string represents. The start of the
- * bus-dependent part of the string is returned as retID.
- */
-
-BusType
-StringToBusType(const char* busID, const char **retID)
-{
- char *p, *s;
- BusType ret = BUS_NONE;
-
- /* If no type field, Default to PCI */
- if (isdigit(busID[0])) {
- if (retID)
- *retID = busID;
- return BUS_PCI;
- }
-
- s = xstrdup(busID);
- p = strtok(s, ":");
- if (p == NULL || *p == 0) {
- xfree(s);
- return BUS_NONE;
- }
- if (!xf86NameCmp(p, "pci") || !xf86NameCmp(p, "agp"))
- ret = BUS_PCI;
- if (!xf86NameCmp(p, "sbus"))
- ret = BUS_SBUS;
- if (ret != BUS_NONE)
- if (retID)
- *retID = busID + strlen(p) + 1;
- xfree(s);
- return ret;
-}
-
-/*
- * Entity related code.
- */
-
-void
-xf86EntityInit(void)
-{
- int i;
-
- for (i = 0; i < xf86NumEntities; i++)
- if (xf86Entities[i]->entityInit) {
- xf86Entities[i]->entityInit(i,xf86Entities[i]->private);
- }
-}
-
-int
-xf86AllocateEntity(void)
-{
- xf86NumEntities++;
- xf86Entities = xnfrealloc(xf86Entities,
- sizeof(EntityPtr) * xf86NumEntities);
- xf86Entities[xf86NumEntities - 1] = xnfcalloc(1,sizeof(EntityRec));
- xf86Entities[xf86NumEntities - 1]->entityPrivates =
- xnfcalloc(sizeof(DevUnion) * xf86EntityPrivateCount, 1);
- return (xf86NumEntities - 1);
-}
-
-static void
-EntityEnter(void)
-{
- int i;
-
- for (i = 0; i < xf86NumEntities; i++)
- if (xf86Entities[i]->entityEnter) {
- xf86Entities[i]->entityEnter(i,xf86Entities[i]->private);
- }
-}
-
-static void
-EntityLeave(void)
-{
- int i;
-
- for (i = 0; i < xf86NumEntities; i++)
- if (xf86Entities[i]->entityLeave) {
- xf86Entities[i]->entityLeave(i,xf86Entities[i]->private);
- }
-}
-
-Bool
-xf86IsEntityPrimary(int entityIndex)
-{
- EntityPtr pEnt = xf86Entities[entityIndex];
-
- if (primaryBus.type != pEnt->bus.type) return FALSE;
-
- switch (pEnt->bus.type) {
- case BUS_PCI:
- return (pEnt->bus.id.pci == primaryBus.id.pci);
- case BUS_SBUS:
- return (pEnt->bus.id.sbus.fbNum == primaryBus.id.sbus.fbNum);
- default:
- return FALSE;
- }
-}
-
-Bool
-xf86SetEntityFuncs(int entityIndex, EntityProc init, EntityProc enter,
- EntityProc leave, pointer private)
-{
- if (entityIndex >= xf86NumEntities)
- return FALSE;
- xf86Entities[entityIndex]->entityInit = init;
- xf86Entities[entityIndex]->entityEnter = enter;
- xf86Entities[entityIndex]->entityLeave = leave;
- xf86Entities[entityIndex]->private = private;
- return TRUE;
-}
-
-Bool
-xf86DriverHasEntities(DriverPtr drvp)
-{
- int i;
- for (i = 0; i < xf86NumEntities; i++) {
- if (xf86Entities[i]->driver == drvp)
- return TRUE;
- }
- return FALSE;
-}
-
-void
-xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex)
-{
- if (entityIndex == -1)
- return;
- if (xf86Entities[entityIndex]->inUse &&
- !(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL)) {
- ErrorF("Requested Entity already in use!\n");
- return;
- }
-
- pScrn->numEntities++;
- pScrn->entityList = xnfrealloc(pScrn->entityList,
- pScrn->numEntities * sizeof(int));
- pScrn->entityList[pScrn->numEntities - 1] = entityIndex;
- xf86Entities[entityIndex]->inUse = TRUE;
- pScrn->entityInstanceList = xnfrealloc(pScrn->entityInstanceList,
- pScrn->numEntities * sizeof(int));
- pScrn->entityInstanceList[pScrn->numEntities - 1] = 0;
- pScrn->domainIOBase = xf86Entities[entityIndex]->domainIO;
-}
-
-void
-xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn, int entityIndex, int instance)
-{
- int i;
-
- if (entityIndex == -1 || entityIndex >= xf86NumEntities)
- return;
-
- for (i = 0; i < pScrn->numEntities; i++) {
- if (pScrn->entityList[i] == entityIndex) {
- pScrn->entityInstanceList[i] = instance;
- break;
- }
- }
-}
-
-/*
- * XXX This needs to be updated for the case where a single entity may have
- * instances associated with more than one screen.
- */
-ScrnInfoPtr
-xf86FindScreenForEntity(int entityIndex)
-{
- int i,j;
-
- if (entityIndex == -1) return NULL;
-
- if (xf86Screens) {
- for (i = 0; i < xf86NumScreens; i++) {
- for (j = 0; j < xf86Screens[i]->numEntities; j++) {
- if ( xf86Screens[i]->entityList[j] == entityIndex )
- return (xf86Screens[i]);
- }
- }
- }
- return NULL;
-}
-
-void
-xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn, int entityIndex)
-{
- int i;
-
- for (i = 0; i < pScrn->numEntities; i++) {
- if (pScrn->entityList[i] == entityIndex) {
- for (i++; i < pScrn->numEntities; i++)
- pScrn->entityList[i-1] = pScrn->entityList[i];
- pScrn->numEntities--;
- xf86Entities[entityIndex]->inUse = FALSE;
- break;
- }
- }
-}
-
-/*
- * xf86ClearEntitiesForScreen() - called when a screen is deleted
- * to mark it's entities unused. Called by xf86DeleteScreen().
- */
-void
-xf86ClearEntityListForScreen(int scrnIndex)
-{
- ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
- int i, entityIndex;
-
- if (pScrn->entityList == NULL || pScrn->numEntities == 0) return;
-
- for (i = 0; i < pScrn->numEntities; i++) {
- entityIndex = pScrn->entityList[i];
- xf86Entities[entityIndex]->inUse = FALSE;
- /* disable resource: call the disable function */
- }
- xfree(pScrn->entityList);
- xfree(pScrn->entityInstanceList);
- pScrn->entityList = NULL;
- pScrn->entityInstanceList = NULL;
-}
-
-/*
- * Add an extra device section (GDevPtr) to an entity.
- */
-
-void
-xf86AddDevToEntity(int entityIndex, GDevPtr dev)
-{
- EntityPtr pEnt;
-
- if (entityIndex >= xf86NumEntities)
- return;
-
- pEnt = xf86Entities[entityIndex];
- pEnt->numInstances++;
- pEnt->devices = xnfrealloc(pEnt->devices,
- pEnt->numInstances * sizeof(GDevPtr));
- pEnt->devices[pEnt->numInstances - 1] = dev;
- dev->claimed = TRUE;
-}
-
-/*
- * xf86GetEntityInfo() -- This function hands information from the
- * EntityRec struct to the drivers. The EntityRec structure itself
- * remains invisible to the driver.
- */
-EntityInfoPtr
-xf86GetEntityInfo(int entityIndex)
-{
- EntityInfoPtr pEnt;
- int i;
-
- if (entityIndex == -1)
- return NULL;
-
- if (entityIndex >= xf86NumEntities)
- return NULL;
-
- pEnt = xnfcalloc(1,sizeof(EntityInfoRec));
- pEnt->index = entityIndex;
- pEnt->location = xf86Entities[entityIndex]->bus;
- pEnt->active = xf86Entities[entityIndex]->active;
- pEnt->chipset = xf86Entities[entityIndex]->chipset;
- pEnt->driver = xf86Entities[entityIndex]->driver;
- if ( (xf86Entities[entityIndex]->devices) &&
- (xf86Entities[entityIndex]->devices[0]) ) {
- for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
- if (xf86Entities[entityIndex]->devices[i]->screen == 0)
- break;
- pEnt->device = xf86Entities[entityIndex]->devices[i];
- } else
- pEnt->device = NULL;
-
- return pEnt;
-}
-
-int
-xf86GetNumEntityInstances(int entityIndex)
-{
- if (entityIndex >= xf86NumEntities)
- return -1;
-
- return xf86Entities[entityIndex]->numInstances;
-}
-
-GDevPtr
-xf86GetDevFromEntity(int entityIndex, int instance)
-{
- int i;
-
- /* We might not use AddDevtoEntity */
- if ( (!xf86Entities[entityIndex]->devices) ||
- (!xf86Entities[entityIndex]->devices[0]) )
- return NULL;
-
- if (entityIndex >= xf86NumEntities ||
- instance >= xf86Entities[entityIndex]->numInstances)
- return NULL;
-
- for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
- if (xf86Entities[entityIndex]->devices[i]->screen == instance)
- break;
- return xf86Entities[entityIndex]->devices[i];
-}
-
-/*
- * xf86AccessInit() - set up everything needed for access control
- * called only once on first server generation.
- */
-void
-xf86AccessInit(void)
-{
- xf86ResAccessEnter = TRUE;
-}
-
-/*
- * xf86AccessEnter() -- gets called to save the text mode VGA IO
- * resources when reentering the server after a VT switch.
- */
-void
-xf86AccessEnter(void)
-{
- if (xf86ResAccessEnter)
- return;
-
- /*
- * on enter we simply disable routing of special resources
- * to any bus and let the RAC code to "open" the right bridges.
- */
- EntityEnter();
- xf86EnterServerState(SETUP);
- xf86ResAccessEnter = TRUE;
-}
-
-/*
- * xf86AccessLeave() -- prepares access for and calls the
- * entityLeave() functions.
- * xf86AccessLeaveState() --- gets called to restore the
- * access to the VGA IO resources when switching VT or on
- * server exit.
- * This was split to call xf86AccessLeaveState() from
- * ddxGiveUp().
- */
-void
-xf86AccessLeave(void)
-{
- if (!xf86ResAccessEnter)
- return;
- EntityLeave();
-}
-
-/*
- * xf86EnableAccess() -- enable access to controlled resources.
- * To reduce latency when switching access the ScrnInfoRec has
- * a linked list of the EntityAccPtr of all screen entities.
- */
-/*
- * switching access needs to be done in te following oder:
- * disable
- * 1. disable old entity
- * 2. reroute bus
- * 3. enable new entity
- * Otherwise resources needed for access control might be shadowed
- * by other resources!
- */
-
-void
-xf86EnableAccess(ScrnInfoPtr pScrn)
-{
- DebugF("Enable access %i\n",pScrn->scrnIndex);
-
- return;
-}
-
-/*
- * xf86EnterServerState() -- set state the server is in.
- */
-
-typedef enum { TRI_UNSET, TRI_TRUE, TRI_FALSE } TriState;
-
-static void
-SetSIGIOForState(xf86State state)
-{
- static int sigio_state;
- static TriState sigio_blocked = TRI_UNSET;
-
- if ((state == SETUP) && (sigio_blocked != TRI_TRUE)) {
- sigio_state = xf86BlockSIGIO();
- sigio_blocked = TRI_TRUE;
- } else if ((state == OPERATING) && (sigio_blocked != TRI_UNSET)) {
- xf86UnblockSIGIO(sigio_state);
- sigio_blocked = TRI_FALSE;
- }
-}
-
-void
-xf86EnterServerState(xf86State state)
-{
- /*
- * This is a good place to block SIGIO during SETUP state.
- * SIGIO should be blocked in SETUP state otherwise (u)sleep()
- * might get interrupted early.
- * We take care not to call xf86BlockSIGIO() twice.
- */
- SetSIGIOForState(state);
- if (state == SETUP)
- DebugF("Entering SETUP state\n");
- else
- DebugF("Entering OPERATING state\n");
-
- return;
-}
-
-/*
- * 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
- ) {
- FatalError("Cannot run in framebuffer mode. Please specify busIDs "
- " for all framebuffer devices\n");
- return;
- } else {
- 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);
- xf86EnterServerState(OPERATING);
-}
-
-/*
- * xf86FindPrimaryDevice() - Find the display device which
- * was active when the server was started.
- */
-void
-xf86FindPrimaryDevice(void)
-{
- if (primaryBus.type != BUS_NONE) {
- char *bus;
- char loc[16];
-
- switch (primaryBus.type) {
- case BUS_PCI:
- bus = "PCI";
- snprintf(loc, sizeof(loc), " %2.2x@%2.2x:%2.2x:%1.1x",
- primaryBus.id.pci->bus,
- primaryBus.id.pci->domain,
- primaryBus.id.pci->dev,
- primaryBus.id.pci->func);
- break;
- case BUS_SBUS:
- bus = "SBUS";
- snprintf(loc, sizeof(loc), " %2.2x", primaryBus.id.sbus.fbNum);
- break;
- default:
- bus = "";
- 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]);
-}
-
+/*
+ * 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 the interfaces to the bus-specific code
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <X11/X.h>
+#include "os.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+
+/* Bus-specific headers */
+
+#include "xf86Bus.h"
+
+#define XF86_OS_PRIVS
+#include "xf86_OSproc.h"
+#include "xf86VGAarbiter.h"
+
+#include "Pci.h"
+
+/* Entity data */
+EntityPtr *xf86Entities = NULL; /* Bus slots claimed by drivers */
+int xf86NumEntities = 0;
+static int xf86EntityPrivateCount = 0;
+
+BusRec primaryBus = { BUS_NONE, { 0 } };
+
+static Bool xf86ResAccessEnter = FALSE;
+
+static Bool doFramebufferMode = FALSE;
+
+/*
+ * Call the bus probes relevant to the architecture.
+ *
+ * The only one available so far is for PCI and SBUS.
+ */
+
+void
+xf86BusProbe(void)
+{
+ xf86PciProbe();
+#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
+ xf86SbusProbe();
+#endif
+}
+
+/*
+ * Determine what bus type the busID string represents. The start of the
+ * bus-dependent part of the string is returned as retID.
+ */
+
+BusType
+StringToBusType(const char* busID, const char **retID)
+{
+ char *p, *s;
+ BusType ret = BUS_NONE;
+
+ /* If no type field, Default to PCI */
+ if (isdigit(busID[0])) {
+ if (retID)
+ *retID = busID;
+ return BUS_PCI;
+ }
+
+ s = xstrdup(busID);
+ p = strtok(s, ":");
+ if (p == NULL || *p == 0) {
+ free(s);
+ return BUS_NONE;
+ }
+ if (!xf86NameCmp(p, "pci") || !xf86NameCmp(p, "agp"))
+ ret = BUS_PCI;
+ if (!xf86NameCmp(p, "sbus"))
+ ret = BUS_SBUS;
+ if (ret != BUS_NONE)
+ if (retID)
+ *retID = busID + strlen(p) + 1;
+ free(s);
+ return ret;
+}
+
+/*
+ * Entity related code.
+ */
+
+void
+xf86EntityInit(void)
+{
+ int i;
+
+ for (i = 0; i < xf86NumEntities; i++)
+ if (xf86Entities[i]->entityInit) {
+ xf86Entities[i]->entityInit(i,xf86Entities[i]->private);
+ }
+}
+
+int
+xf86AllocateEntity(void)
+{
+ xf86NumEntities++;
+ xf86Entities = xnfrealloc(xf86Entities,
+ sizeof(EntityPtr) * xf86NumEntities);
+ xf86Entities[xf86NumEntities - 1] = xnfcalloc(1,sizeof(EntityRec));
+ xf86Entities[xf86NumEntities - 1]->entityPrivates =
+ xnfcalloc(sizeof(DevUnion) * xf86EntityPrivateCount, 1);
+ return (xf86NumEntities - 1);
+}
+
+static void
+EntityEnter(void)
+{
+ int i;
+
+ for (i = 0; i < xf86NumEntities; i++)
+ if (xf86Entities[i]->entityEnter) {
+ xf86Entities[i]->entityEnter(i,xf86Entities[i]->private);
+ }
+}
+
+static void
+EntityLeave(void)
+{
+ int i;
+
+ for (i = 0; i < xf86NumEntities; i++)
+ if (xf86Entities[i]->entityLeave) {
+ xf86Entities[i]->entityLeave(i,xf86Entities[i]->private);
+ }
+}
+
+Bool
+xf86IsEntityPrimary(int entityIndex)
+{
+ EntityPtr pEnt = xf86Entities[entityIndex];
+
+ if (primaryBus.type != pEnt->bus.type) return FALSE;
+
+ switch (pEnt->bus.type) {
+ case BUS_PCI:
+ return (pEnt->bus.id.pci == primaryBus.id.pci);
+ case BUS_SBUS:
+ return (pEnt->bus.id.sbus.fbNum == primaryBus.id.sbus.fbNum);
+ default:
+ return FALSE;
+ }
+}
+
+Bool
+xf86SetEntityFuncs(int entityIndex, EntityProc init, EntityProc enter,
+ EntityProc leave, pointer private)
+{
+ if (entityIndex >= xf86NumEntities)
+ return FALSE;
+ xf86Entities[entityIndex]->entityInit = init;
+ xf86Entities[entityIndex]->entityEnter = enter;
+ xf86Entities[entityIndex]->entityLeave = leave;
+ xf86Entities[entityIndex]->private = private;
+ return TRUE;
+}
+
+Bool
+xf86DriverHasEntities(DriverPtr drvp)
+{
+ int i;
+ for (i = 0; i < xf86NumEntities; i++) {
+ if (xf86Entities[i]->driver == drvp)
+ return TRUE;
+ }
+ return FALSE;
+}
+
+void
+xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex)
+{
+ if (entityIndex == -1)
+ return;
+ if (xf86Entities[entityIndex]->inUse &&
+ !(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL)) {
+ ErrorF("Requested Entity already in use!\n");
+ return;
+ }
+
+ pScrn->numEntities++;
+ pScrn->entityList = xnfrealloc(pScrn->entityList,
+ pScrn->numEntities * sizeof(int));
+ pScrn->entityList[pScrn->numEntities - 1] = entityIndex;
+ xf86Entities[entityIndex]->inUse = TRUE;
+ pScrn->entityInstanceList = xnfrealloc(pScrn->entityInstanceList,
+ pScrn->numEntities * sizeof(int));
+ pScrn->entityInstanceList[pScrn->numEntities - 1] = 0;
+ pScrn->domainIOBase = xf86Entities[entityIndex]->domainIO;
+}
+
+void
+xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn, int entityIndex, int instance)
+{
+ int i;
+
+ if (entityIndex == -1 || entityIndex >= xf86NumEntities)
+ return;
+
+ for (i = 0; i < pScrn->numEntities; i++) {
+ if (pScrn->entityList[i] == entityIndex) {
+ pScrn->entityInstanceList[i] = instance;
+ break;
+ }
+ }
+}
+
+/*
+ * XXX This needs to be updated for the case where a single entity may have
+ * instances associated with more than one screen.
+ */
+ScrnInfoPtr
+xf86FindScreenForEntity(int entityIndex)
+{
+ int i,j;
+
+ if (entityIndex == -1) return NULL;
+
+ if (xf86Screens) {
+ for (i = 0; i < xf86NumScreens; i++) {
+ for (j = 0; j < xf86Screens[i]->numEntities; j++) {
+ if ( xf86Screens[i]->entityList[j] == entityIndex )
+ return (xf86Screens[i]);
+ }
+ }
+ }
+ return NULL;
+}
+
+void
+xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn, int entityIndex)
+{
+ int i;
+
+ for (i = 0; i < pScrn->numEntities; i++) {
+ if (pScrn->entityList[i] == entityIndex) {
+ for (i++; i < pScrn->numEntities; i++)
+ pScrn->entityList[i-1] = pScrn->entityList[i];
+ pScrn->numEntities--;
+ xf86Entities[entityIndex]->inUse = FALSE;
+ break;
+ }
+ }
+}
+
+/*
+ * xf86ClearEntitiesForScreen() - called when a screen is deleted
+ * to mark it's entities unused. Called by xf86DeleteScreen().
+ */
+void
+xf86ClearEntityListForScreen(int scrnIndex)
+{
+ ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
+ int i, entityIndex;
+
+ if (pScrn->entityList == NULL || pScrn->numEntities == 0) return;
+
+ for (i = 0; i < pScrn->numEntities; i++) {
+ entityIndex = pScrn->entityList[i];
+ xf86Entities[entityIndex]->inUse = FALSE;
+ /* disable resource: call the disable function */
+ }
+ free(pScrn->entityList);
+ free(pScrn->entityInstanceList);
+ pScrn->entityList = NULL;
+ pScrn->entityInstanceList = NULL;
+}
+
+/*
+ * Add an extra device section (GDevPtr) to an entity.
+ */
+
+void
+xf86AddDevToEntity(int entityIndex, GDevPtr dev)
+{
+ EntityPtr pEnt;
+
+ if (entityIndex >= xf86NumEntities)
+ return;
+
+ pEnt = xf86Entities[entityIndex];
+ pEnt->numInstances++;
+ pEnt->devices = xnfrealloc(pEnt->devices,
+ pEnt->numInstances * sizeof(GDevPtr));
+ pEnt->devices[pEnt->numInstances - 1] = dev;
+ dev->claimed = TRUE;
+}
+
+/*
+ * xf86GetEntityInfo() -- This function hands information from the
+ * EntityRec struct to the drivers. The EntityRec structure itself
+ * remains invisible to the driver.
+ */
+EntityInfoPtr
+xf86GetEntityInfo(int entityIndex)
+{
+ EntityInfoPtr pEnt;
+ int i;
+
+ if (entityIndex == -1)
+ return NULL;
+
+ if (entityIndex >= xf86NumEntities)
+ return NULL;
+
+ pEnt = xnfcalloc(1,sizeof(EntityInfoRec));
+ pEnt->index = entityIndex;
+ pEnt->location = xf86Entities[entityIndex]->bus;
+ pEnt->active = xf86Entities[entityIndex]->active;
+ pEnt->chipset = xf86Entities[entityIndex]->chipset;
+ pEnt->driver = xf86Entities[entityIndex]->driver;
+ if ( (xf86Entities[entityIndex]->devices) &&
+ (xf86Entities[entityIndex]->devices[0]) ) {
+ for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
+ if (xf86Entities[entityIndex]->devices[i]->screen == 0)
+ break;
+ pEnt->device = xf86Entities[entityIndex]->devices[i];
+ } else
+ pEnt->device = NULL;
+
+ return pEnt;
+}
+
+int
+xf86GetNumEntityInstances(int entityIndex)
+{
+ if (entityIndex >= xf86NumEntities)
+ return -1;
+
+ return xf86Entities[entityIndex]->numInstances;
+}
+
+GDevPtr
+xf86GetDevFromEntity(int entityIndex, int instance)
+{
+ int i;
+
+ /* We might not use AddDevtoEntity */
+ if ( (!xf86Entities[entityIndex]->devices) ||
+ (!xf86Entities[entityIndex]->devices[0]) )
+ return NULL;
+
+ if (entityIndex >= xf86NumEntities ||
+ instance >= xf86Entities[entityIndex]->numInstances)
+ return NULL;
+
+ for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
+ if (xf86Entities[entityIndex]->devices[i]->screen == instance)
+ break;
+ return xf86Entities[entityIndex]->devices[i];
+}
+
+/*
+ * xf86AccessInit() - set up everything needed for access control
+ * called only once on first server generation.
+ */
+void
+xf86AccessInit(void)
+{
+ xf86ResAccessEnter = TRUE;
+}
+
+/*
+ * xf86AccessEnter() -- gets called to save the text mode VGA IO
+ * resources when reentering the server after a VT switch.
+ */
+void
+xf86AccessEnter(void)
+{
+ if (xf86ResAccessEnter)
+ return;
+
+ /*
+ * on enter we simply disable routing of special resources
+ * to any bus and let the RAC code to "open" the right bridges.
+ */
+ EntityEnter();
+ xf86EnterServerState(SETUP);
+ xf86ResAccessEnter = TRUE;
+}
+
+/*
+ * xf86AccessLeave() -- prepares access for and calls the
+ * entityLeave() functions.
+ * xf86AccessLeaveState() --- gets called to restore the
+ * access to the VGA IO resources when switching VT or on
+ * server exit.
+ * This was split to call xf86AccessLeaveState() from
+ * ddxGiveUp().
+ */
+void
+xf86AccessLeave(void)
+{
+ if (!xf86ResAccessEnter)
+ return;
+ EntityLeave();
+}
+
+/*
+ * xf86EnableAccess() -- enable access to controlled resources.
+ * To reduce latency when switching access the ScrnInfoRec has
+ * a linked list of the EntityAccPtr of all screen entities.
+ */
+/*
+ * switching access needs to be done in te following oder:
+ * disable
+ * 1. disable old entity
+ * 2. reroute bus
+ * 3. enable new entity
+ * Otherwise resources needed for access control might be shadowed
+ * by other resources!
+ */
+
+void
+xf86EnableAccess(ScrnInfoPtr pScrn)
+{
+ DebugF("Enable access %i\n",pScrn->scrnIndex);
+
+ return;
+}
+
+/*
+ * xf86EnterServerState() -- set state the server is in.
+ */
+
+typedef enum { TRI_UNSET, TRI_TRUE, TRI_FALSE } TriState;
+
+static void
+SetSIGIOForState(xf86State state)
+{
+ static int sigio_state;
+ static TriState sigio_blocked = TRI_UNSET;
+
+ if ((state == SETUP) && (sigio_blocked != TRI_TRUE)) {
+ sigio_state = xf86BlockSIGIO();
+ sigio_blocked = TRI_TRUE;
+ } else if ((state == OPERATING) && (sigio_blocked != TRI_UNSET)) {
+ xf86UnblockSIGIO(sigio_state);
+ sigio_blocked = TRI_FALSE;
+ }
+}
+
+void
+xf86EnterServerState(xf86State state)
+{
+ /*
+ * This is a good place to block SIGIO during SETUP state.
+ * SIGIO should be blocked in SETUP state otherwise (u)sleep()
+ * might get interrupted early.
+ * We take care not to call xf86BlockSIGIO() twice.
+ */
+ SetSIGIOForState(state);
+ if (state == SETUP)
+ DebugF("Entering SETUP state\n");
+ else
+ DebugF("Entering OPERATING state\n");
+
+ return;
+}
+
+/*
+ * 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
+ ) {
+ FatalError("Cannot run in framebuffer mode. Please specify busIDs "
+ " for all framebuffer devices\n");
+ return;
+ } else {
+ 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);
+ xf86EnterServerState(OPERATING);
+}
+
+/*
+ * xf86FindPrimaryDevice() - Find the display device which
+ * was active when the server was started.
+ */
+void
+xf86FindPrimaryDevice(void)
+{
+ if (primaryBus.type != BUS_NONE) {
+ char *bus;
+ char loc[16];
+
+ switch (primaryBus.type) {
+ case BUS_PCI:
+ bus = "PCI";
+ snprintf(loc, sizeof(loc), " %2.2x@%2.2x:%2.2x:%1.1x",
+ primaryBus.id.pci->bus,
+ primaryBus.id.pci->domain,
+ primaryBus.id.pci->dev,
+ primaryBus.id.pci->func);
+ break;
+ case BUS_SBUS:
+ bus = "SBUS";
+ snprintf(loc, sizeof(loc), " %2.2x", primaryBus.id.sbus.fbNum);
+ break;
+ default:
+ bus = "";
+ 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]);
+}
+