2 * Copyright (c) 2011 The FreeBSD Foundation
3 * Copyright (c) 2015-2019 François Tigeot <ftigeot@wolfpond.org>
6 * This software was developed by Konstantin Belousov under sponsorship from
7 * the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _AGP_INTEL_GTT_H_
32 #define _AGP_INTEL_GTT_H_
34 #include <sys/param.h>
37 #include <vm/vm_page.h>
39 #include <linux/types.h>
40 #include <linux/scatterlist.h>
42 /* Special gtt memory types */
43 #define AGP_DCACHE_MEMORY 1
44 #define AGP_PHYS_MEMORY 2
46 /* New caching attributes for gen6/sandybridge */
47 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
48 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
50 /* flag for GFDT type */
51 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
54 /* Size of memory reserved for graphics by the BIOS */
56 /* Total number of gtt entries. */
57 u_int gtt_total_entries
;
58 /* Part of the gtt that is mappable by the cpu, for those chips where
59 * this is not the full gtt. */
60 u_int gtt_mappable_entries
;
61 /* Whether we idle the gpu before mapping/unmapping */
62 unsigned int do_idle_maps
: 1;
63 /* Share the scratch page dma with ppgtts. */
64 vm_paddr_t scratch_page_dma
;
65 struct vm_page
*scratch_page
;
66 /* for ppgtt PDE access */
68 /* needed for ioremap in drm/i915 */
69 bus_addr_t gma_bus_addr
;
72 struct intel_gtt
agp_intel_gtt_get(device_t dev
);
73 int agp_intel_gtt_chipset_flush(device_t dev
);
74 void agp_intel_gtt_clear_range(device_t dev
, u_int first_entry
,
76 void agp_intel_gtt_insert_pages(device_t dev
, u_int first_entry
,
77 u_int num_entries
, vm_page_t
*pages
, u_int flags
);
79 void intel_gtt_get(u64
*gtt_total
,
81 phys_addr_t
*mappable_base
,
84 int intel_gtt_chipset_flush(void);
85 void intel_gtt_clear_range(u_int first_entry
, u_int num_entries
);
87 void intel_gtt_insert_sg_entries(struct sg_table
*st
,
88 unsigned int pg_start
,
91 void intel_gtt_sync_pte(u_int entry
);
92 void intel_gtt_write(u_int entry
, uint32_t val
);
94 static inline void intel_gmch_remove(void)
98 bool intel_enable_gtt(void);
100 void intel_gtt_insert_page(dma_addr_t addr
,
104 #endif /* _AGP_INTEL_GTT_H_ */