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+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atibus.c,v 1.18 2003/01/22 21:44:10 tsi Exp $ */
+/*
+ * Copyright 1997 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of Marc Aurele La France not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  Marc Aurele La France makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as-is" without express or implied warranty.
+ *
+ * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO
+ * EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "ati.h"
+#include "atiadapter.h"
+#include "atibus.h"
+#include "atichip.h"
+#include "atiio.h"
+#include "atistruct.h"
+#include "ativersion.h"
+
+/*
+ * Definitions related to an adapter's system bus interface.
+ */
+
+const char *ATIBusNames[] =
+{
+    "16-Bit ISA",
+    "EISA",
+    "16-Bit MicroChannel",
+    "32-Bit MicroChannel",
+    "386SX Local Bus",
+    "386DX Local Bus",
+    "VESA Local Bus",
+    "PCI",
+    "AGP"
+};
+
+/*
+ * ATIClaimResources --
+ *
+ * This function registers most of the bus resources used by an adapter.  The
+ * exceptions are PCI-configured resources and non-PCI non-AGP linear
+ * apertures, both of which are registered by ATIPreInit().  This function also
+ * attempts to register unshareable resources for inactive PCI adapters,
+ * whether or not they are relocatable.
+ */
+static void
+ATIClaimResources
+(
+    ATIPtr pATI,
+    Bool   Active
+)
+{
+    resPtr   pResources;
+
+#ifndef AVOID_CPIO
+
+    resRange Resources[2] = {{0, 0, 0}, _END};
+
+    /* Claim VGA and VGAWonder resources */
+    if ((pATI->VGAAdapter != ATI_ADAPTER_NONE) && (Active || !pATI->SharedVGA))
+    {
+        /*
+         * 18800-x's are the only ATI controllers that decode all ISA aliases
+         * of VGA and VGA Wonder I/O ports.  Other x8800's do not decode >any<
+         * VGA aliases, but do decode VGA Wonder aliases whose most significant
+         * nibble is zero.
+         */
+        xf86ClaimFixedResources(
+            (pATI->Chip <= ATI_CHIP_18800_1) ?
+            (pATI->SharedVGA ? resVgaSparseShared : resVgaSparseExclusive) :
+            (pATI->SharedVGA ? resVgaShared : resVgaExclusive),
+            pATI->iEntity);
+
+        if (pATI->CPIO_VGAWonder)
+        {
+            if (pATI->SharedVGA)
+                Resources[0].type = ResShrIoSparse | ResBus;
+            else
+                Resources[0].type = ResExcIoSparse | ResBus;
+            Resources[0].rBase = pATI->CPIO_VGAWonder;
+            if (pATI->Chip <= ATI_CHIP_18800_1)
+                Resources[0].rMask = 0x03FEU;
+            else
+                Resources[0].rMask = 0xF3FEU;
+
+            xf86ClaimFixedResources(Resources, pATI->iEntity);
+
+            (void)memcpy(pATI->VGAWonderResources,
+                Resources, SizeOf(Resources));
+        }
+    }
+
+    if (!Active && pATI->SharedAccelerator)
+        return;
+
+    /* Claim 8514/A resources */
+    if (pATI->ChipHasSUBSYS_CNTL)
+        xf86ClaimFixedResources(
+            pATI->SharedAccelerator ? res8514Shared : res8514Exclusive,
+            pATI->iEntity);
+
+    /* Claim Mach64 sparse I/O resources */
+    if ((pATI->Adapter == ATI_ADAPTER_MACH64) &&
+        (pATI->CPIODecoding == SPARSE_IO))
+    {
+        if (pATI->SharedAccelerator)
+            Resources[0].type = ResShrIoSparse | ResBus;
+        else
+            Resources[0].type = ResExcIoSparse | ResBus;
+        Resources[0].rBase = pATI->CPIOBase;
+        Resources[0].rMask = 0x03FCU;
+
+        xf86ClaimFixedResources(Resources, pATI->iEntity);
+    }
+
+    if (Active)
+        return;
+
+#else /* AVOID_CPIO */
+
+    if (pATI->SharedAccelerator)
+        return;
+
+#endif /* AVOID_CPIO */
+
+    /* Register unshared relocatable resources for inactive adapters */
+    do
+    {
+        pResources = xf86RegisterResources(pATI->iEntity, NULL, ResExclusive);
+        if (!pResources)
+            return;
+
+        pResources = xf86ReallocatePciResources(pATI->iEntity, pResources);
+    } while (!pResources);
+
+    xf86Msg(X_WARNING,
+        ATI_NAME ":  Unable to register the following resources for inactive"
+        " adapter:\n");
+    xf86PrintResList(1, pResources);
+    xf86FreeResList(pResources);
+}
+
+/*
+ * ATIClaimBusSlot --
+ *
+ * Claim an adapter and register its resources.
+ */
+int
+ATIClaimBusSlot
+(
+    DriverPtr pDriver,
+    int       Chipset,
+    GDevPtr   pGDev,
+    Bool      Active,
+    ATIPtr    pATI
+)
+{
+    pciVideoPtr pVideo = pATI->PCIInfo;
+
+    if (pVideo)
+        pATI->iEntity =
+            xf86ClaimPciSlot(pVideo->bus, pVideo->device, pVideo->func,
+                pDriver, Chipset, pGDev, Active);
+    else
+        pATI->iEntity = xf86ClaimIsaSlot(pDriver, Chipset, pGDev, Active);
+
+    if (pATI->iEntity >= 0)
+        ATIClaimResources(pATI, Active);
+
+    return pATI->iEntity;
+}