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intel-gtt.h revision 1.4 
      1 /*	$NetBSD: intel-gtt.h,v 1.4 2014/07/16 20:56:25 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Taylor R. Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _DRM_INTEL_GTT_H_
     33 #define _DRM_INTEL_GTT_H_
     34 
     35 #include <sys/types.h>
     36 #include <sys/bus.h>
     37 
     38 struct pci_dev;
     39 struct agp_bridge_data;
     40 
     41 void	intel_gtt_get(size_t * /* GPU VA size in bytes */,
     42 	    size_t * /* graphics stolen memory in bytes */,
     43 	    bus_addr_t * /* aperture base */,
     44 	    unsigned long * /* aperture size in bytes */);
     45 int	intel_gmch_probe(struct pci_dev *, struct pci_dev *,
     46 	    struct agp_bridge_data *);
     47 void	intel_gmch_remove(void);
     48 bool	intel_enable_gtt(void);
     49 void	intel_gtt_chipset_flush(void);
     50 void	intel_gtt_insert_entries(bus_dmamap_t, unsigned, unsigned);
     51 void	intel_gtt_clear_range(unsigned, unsigned);
     52 
     53 #define	AGP_DCACHE_MEMORY	1
     54 #define	AGP_PHYS_MEMORY		2
     55 
     56 /* XXX Dummy stubs -- should make these mean something and respect them.   */
     57 #define	AGP_USER_MEMORY		0
     58 #define	AGP_USER_CACHED_MEMORY	0
     59 
     60 #define	AGP_USER_CACHED_MEMORY_GFDT	__BIT(3)
     61 
     62 extern int	intel_iommu_gfx_mapped;
     63 
     64 #endif  /* _DRM_INTEL_GTT_H_ */
     65