1 files changed, 139 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/include/svga3d_caps.h b/src/gallium/drivers/svga/include/svga3d_caps.h
new file mode 100644
index 00000000000..714ce9f45fb
--- /dev/null
+++ b/src/gallium/drivers/svga/include/svga3d_caps.h
@@ -0,0 +1,139 @@
+/**********************************************************
+ * Copyright 2007-2009 VMware, Inc.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS
+ * 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.
+ *
+ **********************************************************/
+
+/*
+ * svga3d_caps.h --
+ *
+ *       Definitions for SVGA3D hardware capabilities.  Capabilities
+ *       are used to query for optional rendering features during
+ *       driver initialization. The capability data is stored as very
+ *       basic key/value dictionary within the "FIFO register" memory
+ *       area at the beginning of BAR2.
+ *
+ *       Note that these definitions are only for 3D capabilities.
+ *       The SVGA device also has "device capabilities" and "FIFO
+ *       capabilities", which are non-3D-specific and are stored as
+ *       bitfields rather than key/value pairs.
+ */
+
+#ifndef _SVGA3D_CAPS_H_
+#define _SVGA3D_CAPS_H_
+
+#define SVGA_FIFO_3D_CAPS_SIZE   (SVGA_FIFO_3D_CAPS_LAST - \
+                                  SVGA_FIFO_3D_CAPS + 1)
+
+
+/*
+ * SVGA3dCapsRecordType
+ *
+ *    Record types that can be found in the caps block.
+ *    Related record types are grouped together numerically so that
+ *    SVGA3dCaps_FindRecord() can be applied on a range of record
+ *    types.
+ */
+
+typedef enum {
+   SVGA3DCAPS_RECORD_UNKNOWN        = 0,
+   SVGA3DCAPS_RECORD_DEVCAPS_MIN    = 0x100,
+   SVGA3DCAPS_RECORD_DEVCAPS        = 0x100,
+   SVGA3DCAPS_RECORD_DEVCAPS_MAX    = 0x1ff,
+} SVGA3dCapsRecordType;
+
+
+/*
+ * SVGA3dCapsRecordHeader
+ *
+ *    Header field leading each caps block record. Contains the offset (in
+ *    register words, NOT bytes) to the next caps block record (or the end
+ *    of caps block records which will be a zero word) and the record type
+ *    as defined above.
+ */
+
+typedef
+struct SVGA3dCapsRecordHeader {
+   uint32 length;
+   SVGA3dCapsRecordType type;
+}
+SVGA3dCapsRecordHeader;
+
+
+/*
+ * SVGA3dCapsRecord
+ *
+ *    Caps block record; "data" is a placeholder for the actual data structure
+ *    contained within the record; for example a record containing a FOOBAR
+ *    structure would be of size "sizeof(SVGA3dCapsRecordHeader) +
+ *    sizeof(FOOBAR)".
+ */
+
+typedef
+struct SVGA3dCapsRecord {
+   SVGA3dCapsRecordHeader header;
+   uint32 data[1];
+}
+SVGA3dCapsRecord;
+
+
+typedef uint32 SVGA3dCapPair[2];
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3dCaps_FindRecord
+ *
+ *    Finds the record with the highest-valued type within the given range
+ *    in the caps block.
+ *
+ *    Result: pointer to found record, or NULL if not found.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static INLINE SVGA3dCapsRecord *
+SVGA3dCaps_FindRecord(const uint32 *capsBlock,
+                      SVGA3dCapsRecordType recordTypeMin,
+                      SVGA3dCapsRecordType recordTypeMax)
+{
+   SVGA3dCapsRecord *record, *found = NULL;
+   uint32 offset;
+
+   /*
+    * Search linearly through the caps block records for the specified type.
+    */
+   for (offset = 0; capsBlock[offset] != 0; offset += capsBlock[offset]) {
+      record = (SVGA3dCapsRecord *) (capsBlock + offset);
+      if ((record->header.type >= recordTypeMin) &&
+          (record->header.type <= recordTypeMax) &&
+          (!found || (record->header.type > found->header.type))) {
+         found = record;
+      }
+   }
+
+   return found;
+}
+
+
+#endif // _SVGA3D_CAPS_H_