initial state (xorg-server 1.10.2)

1 files changed, 636 insertions, 0 deletions

diff --git a/hw/xfree86/common/xf86Bus.c b/hw/xfree86/common/xf86Bus.c
new file mode 100644
index 0000000..3b08968
--- /dev/null
+++ b/hw/xfree86/common/xf86Bus.c
@@ -0,0 +1,636 @@
+/*
+ * 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"
+
+/* Entity data */
+EntityPtr *xf86Entities = NULL;	/* Bus slots claimed by drivers */
+int xf86NumEntities = 0;
+static int xf86EntityPrivateCount = 0;
+
+BusRec primaryBus = { BUS_NONE, { 0 } };
+
+/**
+ * Call the driver's correct probe function.
+ *
+ * If the driver implements the \c DriverRec::PciProbe entry-point and an
+ * appropriate PCI device (with matching Device section in the xorg.conf file)
+ * is found, it is called.  If \c DriverRec::PciProbe or no devices can be
+ * successfully probed with it (e.g., only non-PCI devices are available),
+ * the driver's \c DriverRec::Probe function is called.
+ *
+ * \param drv   Driver to probe
+ *
+ * \return
+ * If a device can be successfully probed by the driver, \c TRUE is
+ * returned.  Otherwise, \c FALSE is returned.
+ */
+Bool
+xf86CallDriverProbe( DriverPtr drv, Bool detect_only )
+{
+    Bool     foundScreen = FALSE;
+
+    if (drv->PciProbe != NULL) {
+        if (xf86DoConfigure && xf86DoConfigurePass1) {
+            assert(detect_only);
+            foundScreen = xf86PciAddMatchingDev(drv);
+        }
+        else {
+            assert(! detect_only);
+            foundScreen = xf86PciProbeDev(drv);
+        }
+    }
+
+    if (!foundScreen && (drv->Probe != NULL)) {
+        xf86Msg( X_WARNING, "Falling back to old probe method for %s\n",
+                             drv->driverName);
+        foundScreen = (*drv->Probe)(drv, (detect_only) ? PROBE_DETECT
+                                    : PROBE_DEFAULT);
+    }
+
+    return foundScreen;
+}
+
+/**
+ * @return TRUE if all buses are configured and set up correctly and FALSE
+ * otherwise.
+ */
+Bool
+xf86BusConfig(void)
+{
+    screenLayoutPtr layout;
+    int i, j;
+
+    /* Enable full I/O access */
+    if (xorgHWAccess)
+        xorgHWAccess = xf86EnableIO();
+
+    /*
+     * Now call each of the Probe functions.  Each successful probe will
+     * result in an extra entry added to the xf86Screens[] list for each
+     * instance of the hardware found.
+     */
+    for (i = 0; i < xf86NumDrivers; i++) {
+        xorgHWFlags flags;
+        if (!xorgHWAccess) {
+            if (!xf86DriverList[i]->driverFunc
+            || !xf86DriverList[i]->driverFunc(NULL,
+                             GET_REQUIRED_HW_INTERFACES,
+                              &flags)
+            || NEED_IO_ENABLED(flags))
+            continue;
+        }
+
+        xf86CallDriverProbe(xf86DriverList[i], FALSE);
+    }
+
+    /* If nothing was detected, return now */
+    if (xf86NumScreens == 0) {
+        xf86Msg(X_ERROR, "No devices detected.\n");
+        return FALSE;
+    }
+
+    xf86VGAarbiterInit();
+
+    /*
+     * Match up the screens found by the probes against those specified
+     * in the config file.  Remove the ones that won't be used.  Sort
+     * them in the order specified.
+     *
+     * What is the best way to do this?
+     *
+     * For now, go through the screens allocated by the probes, and
+     * look for screen config entry which refers to the same device
+     * section as picked out by the probe.
+     *
+     */
+    for (i = 0; i < xf86NumScreens; i++) {
+        for (layout = xf86ConfigLayout.screens; layout->screen != NULL;
+             layout++) {
+            Bool found = FALSE;
+            for (j = 0; j < xf86Screens[i]->numEntities; j++) {
+
+                GDevPtr dev = xf86GetDevFromEntity(
+                                xf86Screens[i]->entityList[j],
+                                xf86Screens[i]->entityInstanceList[j]);
+                if (dev == layout->screen->device) {
+                    /* A match has been found */
+                    xf86Screens[i]->confScreen = layout->screen;
+                    found = TRUE;
+                    break;
+                }
+            }
+            if (found) break;
+        }
+        if (layout->screen == NULL) {
+            /* No match found */
+            xf86Msg(X_ERROR,
+            "Screen %d deleted because of no matching config section.\n", i);
+            xf86DeleteScreen(i--, 0);
+        }
+    }
+
+    /* If no screens left, return now.  */
+    if (xf86NumScreens == 0) {
+        xf86Msg(X_ERROR,
+        "Device(s) detected, but none match those in the config file.\n");
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+/*
+ * 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;
+}
+
+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;
+}
+
+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];
+}
+
+/*
+ * xf86AccessEnter() -- gets called to save the text mode VGA IO 
+ * resources when reentering the server after a VT switch.
+ */
+void
+xf86AccessEnter(void)
+{
+    int i;
+
+    for (i = 0; i < xf86NumEntities; i++)
+        if (xf86Entities[i]->entityEnter)
+		xf86Entities[i]->entityEnter(i,xf86Entities[i]->private);
+}
+
+void
+xf86AccessLeave(void)
+{
+    int i;
+
+    for (i = 0; i < xf86NumEntities; i++)
+        if (xf86Entities[i]->entityLeave)
+		xf86Entities[i]->entityLeave(i,xf86Entities[i]->private);
+}
+
+/*
+ * xf86PostProbe() -- Allocate all non conflicting resources
+ * This function gets called by xf86Init().
+ */
+void
+xf86PostProbe(void)
+{
+    int i;
+
+    if (fbSlotClaimed && (pciSlotClaimed
+#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
+	    || sbusSlotClaimed
+#endif
+	    ))
+	    FatalError("Cannot run in framebuffer mode. Please specify busIDs "
+		       "       for all framebuffer devices\n");
+
+    for (i = 0; i < xf86NumEntities; i++)
+        if (xf86Entities[i]->entityInit)
+	    xf86Entities[i]->entityInit(i,xf86Entities[i]->private);
+}
+
+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 */
+	memset(&nprivs[idx], 0, 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]);
+}
+