FreeBSD/Linux Kernel Cross Reference
sys/dev/agp/agp_i810.h
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov under sponsorship from
7 * the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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.
17 *
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
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32
33 #ifndef AGP_AGP_I810_H
34 #define AGP_AGP_I810_H
35
36 #include <sys/param.h>
37 #include <sys/rman.h>
38 #include <sys/sglist.h>
39
40 #include <vm/vm.h>
41 #include <vm/vm_page.h>
42
43 /* Special gtt memory types */
44 #define AGP_DCACHE_MEMORY 1
45 #define AGP_PHYS_MEMORY 2
46
47 /* New caching attributes for gen6/sandybridge */
48 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
49 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
50
51 /* flag for GFDT type */
52 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
53
54 struct intel_gtt {
55 /* Size of memory reserved for graphics by the BIOS */
56 unsigned int stolen_size;
57 /* Total number of gtt entries. */
58 unsigned int gtt_total_entries;
59 /* Part of the gtt that is mappable by the cpu, for those chips where
60 * this is not the full gtt. */
61 unsigned int gtt_mappable_entries;
62 /* Whether i915 needs to use the dmar apis or not. */
63 unsigned int needs_dmar : 1;
64 /* Whether we idle the gpu before mapping/unmapping */
65 unsigned int do_idle_maps : 1;
66 /* Share the scratch page dma with ppgtts. */
67 vm_paddr_t scratch_page_dma;
68 vm_page_t scratch_page;
69 /* for ppgtt PDE access */
70 uint32_t *gtt;
71 /* needed for ioremap in drm/i915 */
72 bus_addr_t gma_bus_addr;
73 };
74
75 struct intel_gtt agp_intel_gtt_get(device_t dev);
76 int agp_intel_gtt_chipset_flush(device_t dev);
77 void agp_intel_gtt_unmap_memory(device_t dev, struct sglist *sg_list);
78 void agp_intel_gtt_clear_range(device_t dev, u_int first_entry,
79 u_int num_entries);
80 int agp_intel_gtt_map_memory(device_t dev, vm_page_t *pages, u_int num_entries,
81 struct sglist **sg_list);
82 void agp_intel_gtt_insert_sg_entries(device_t dev, struct sglist *sg_list,
83 u_int pg_start, u_int flags);
84 void agp_intel_gtt_insert_pages(device_t dev, u_int first_entry,
85 u_int num_entries, vm_page_t *pages, u_int flags);
86
87 struct intel_gtt *intel_gtt_get(void);
88 int intel_gtt_chipset_flush(void);
89 void intel_gtt_unmap_memory(struct sglist *sg_list);
90 void intel_gtt_clear_range(u_int first_entry, u_int num_entries);
91 void intel_gtt_install_pte(u_int index, vm_paddr_t addr, u_int flags);
92 int intel_gtt_map_memory(vm_page_t *pages, u_int num_entries,
93 struct sglist **sg_list);
94 void intel_gtt_insert_sg_entries(struct sglist *sg_list, u_int pg_start,
95 u_int flags);
96 void intel_gtt_insert_pages(u_int first_entry, u_int num_entries,
97 vm_page_t *pages, u_int flags);
98 vm_paddr_t intel_gtt_read_pte_paddr(u_int entry);
99 u_int32_t intel_gtt_read_pte(u_int entry);
100 device_t intel_gtt_get_bridge_device(void);
101 void intel_gtt_write(u_int entry, uint32_t val);
102
103 #endif
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