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      1 /*	$NetBSD: intel-gtt.h,v 1.10 2021/12/19 12:37:36 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 #include <linux/ioport.h>
     39 
     40 struct agp_bridge_data;
     41 struct pci_dev;
     42 struct sg_table;
     43 
     44 void	intel_gtt_get(uint64_t * /* GPU VA size in bytes */,
     45 	    bus_addr_t * /* aperture base */,
     46 	    resource_size_t * /* aperture size in bytes */);
     47 int	intel_gmch_probe(struct pci_dev *, struct pci_dev *,
     48 	    struct agp_bridge_data *);
     49 void	intel_gmch_remove(void);
     50 bool	intel_enable_gtt(void);
     51 void	intel_gtt_chipset_flush(void);
     52 void	intel_gtt_insert_page(bus_addr_t, unsigned, unsigned);
     53 void	intel_gtt_insert_sg_entries(struct sg_table *, unsigned, unsigned);
     54 void	intel_gtt_clear_range(unsigned, unsigned);
     55 
     56 #define	AGP_USER_MEMORY		1
     57 #define	AGP_USER_CACHED_MEMORY	2
     58 
     59 extern int		intel_iommu_gfx_mapped;
     60 extern struct resource	intel_graphics_stolen_res;
     61 
     62 #endif  /* _DRM_INTEL_GTT_H_ */
     63