1/*
2 * Copyright 2017 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22#include <nvif/mmu.h>
23
24#include <nvif/class.h>
25#include <nvif/if0008.h>
26
27void
28nvif_mmu_dtor(struct nvif_mmu *mmu)
29{
30	kfree(mmu->kind);
31	kfree(mmu->type);
32	kfree(mmu->heap);
33	nvif_object_dtor(&mmu->object);
34}
35
36int
37nvif_mmu_ctor(struct nvif_object *parent, const char *name, s32 oclass,
38	      struct nvif_mmu *mmu)
39{
40	static const struct nvif_mclass mems[] = {
41		{ NVIF_CLASS_MEM_GF100, -1 },
42		{ NVIF_CLASS_MEM_NV50 , -1 },
43		{ NVIF_CLASS_MEM_NV04 , -1 },
44		{}
45	};
46	struct nvif_mmu_v0 args;
47	int ret, i;
48
49	args.version = 0;
50	mmu->heap = NULL;
51	mmu->type = NULL;
52	mmu->kind = NULL;
53
54	ret = nvif_object_ctor(parent, name ? name : "nvifMmu", 0, oclass,
55			       &args, sizeof(args), &mmu->object);
56	if (ret)
57		goto done;
58
59	mmu->dmabits = args.dmabits;
60	mmu->heap_nr = args.heap_nr;
61	mmu->type_nr = args.type_nr;
62	mmu->kind_nr = args.kind_nr;
63
64	ret = nvif_mclass(&mmu->object, mems);
65	if (ret < 0)
66		goto done;
67	mmu->mem = mems[ret].oclass;
68
69	mmu->heap = kmalloc_array(mmu->heap_nr, sizeof(*mmu->heap),
70				  GFP_KERNEL);
71	mmu->type = kmalloc_array(mmu->type_nr, sizeof(*mmu->type),
72				  GFP_KERNEL);
73	if (ret = -ENOMEM, !mmu->heap || !mmu->type)
74		goto done;
75
76	mmu->kind = kmalloc_array(mmu->kind_nr, sizeof(*mmu->kind),
77				  GFP_KERNEL);
78	if (!mmu->kind && mmu->kind_nr)
79		goto done;
80
81	for (i = 0; i < mmu->heap_nr; i++) {
82		struct nvif_mmu_heap_v0 args = { .index = i };
83
84		ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP,
85				       &args, sizeof(args));
86		if (ret)
87			goto done;
88
89		mmu->heap[i].size = args.size;
90	}
91
92	for (i = 0; i < mmu->type_nr; i++) {
93		struct nvif_mmu_type_v0 args = { .index = i };
94
95		ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE,
96				       &args, sizeof(args));
97		if (ret)
98			goto done;
99
100		mmu->type[i].type = 0;
101		if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM;
102		if (args.host) mmu->type[i].type |= NVIF_MEM_HOST;
103		if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP;
104		if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP;
105		if (args.kind    ) mmu->type[i].type |= NVIF_MEM_KIND;
106		if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE;
107		if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT;
108		if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED;
109		mmu->type[i].heap = args.heap;
110	}
111
112	if (mmu->kind_nr) {
113		struct nvif_mmu_kind_v0 *kind;
114		size_t argc = struct_size(kind, data, mmu->kind_nr);
115
116		if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL)))
117			goto done;
118		kind->version = 0;
119		kind->count = mmu->kind_nr;
120
121		ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND,
122				       kind, argc);
123		if (ret == 0)
124			memcpy(mmu->kind, kind->data, kind->count);
125		mmu->kind_inv = kind->kind_inv;
126		kfree(kind);
127	}
128
129done:
130	if (ret)
131		nvif_mmu_dtor(mmu);
132	return ret;
133}
134