1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* SPDX-FileCopyrightText: Copyright (c) 1999-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#define __NO_VERSION__
#include "os-interface.h"
#include "nv-linux.h"
NV_STATUS NV_API_CALL nv_add_mapping_context_to_file(
nv_state_t *nv,
nv_usermap_access_params_t *nvuap,
NvU32 prot,
void *pAllocPriv,
NvU64 pageIndex,
NvU32 fd
)
{
NV_STATUS status = NV_OK;
nv_alloc_mapping_context_t *nvamc = NULL;
nv_file_private_t *nvfp = NULL;
nv_linux_file_private_t *nvlfp = NULL;
nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
void *priv = NULL;
nvfp = nv_get_file_private(fd, NV_IS_CTL_DEVICE(nv), &priv);
if (nvfp == NULL)
return NV_ERR_INVALID_ARGUMENT;
nvlfp = nv_get_nvlfp_from_nvfp(nvfp);
nvamc = &nvlfp->mmap_context;
if (nvamc->valid)
{
status = NV_ERR_STATE_IN_USE;
goto done;
}
if (NV_IS_CTL_DEVICE(nv))
{
nvamc->alloc = pAllocPriv;
nvamc->page_index = pageIndex;
}
else
{
if (NV_STATE_PTR(nvlfp->nvptr) != nv)
{
status = NV_ERR_INVALID_ARGUMENT;
goto done;
}
nvamc->mmap_start = nvuap->mmap_start;
nvamc->mmap_size = nvuap->mmap_size;
if (nv_get_numa_status(nvl) == NV_NUMA_STATUS_ONLINE)
{
nvamc->page_array = nvuap->page_array;
nvamc->num_pages = nvuap->num_pages;
}
nvamc->access_start = nvuap->access_start;
nvamc->access_size = nvuap->access_size;
nvamc->remap_prot_extra = nvuap->remap_prot_extra;
}
nvamc->prot = prot;
nvamc->valid = NV_TRUE;
nvamc->caching = nvuap->caching;
done:
nv_put_file_private(priv);
return status;
}
NV_STATUS NV_API_CALL nv_alloc_user_mapping(
nv_state_t *nv,
void *pAllocPrivate,
NvU64 pageIndex,
NvU32 pageOffset,
NvU64 size,
NvU32 protect,
NvU64 *pUserAddress,
void **ppPrivate
)
{
nv_alloc_t *at = pAllocPrivate;
if (at->flags.contig)
*pUserAddress = (at->page_table[0]->phys_addr + (pageIndex * PAGE_SIZE) + pageOffset);
else
*pUserAddress = (at->page_table[pageIndex]->phys_addr + pageOffset);
return NV_OK;
}
NV_STATUS NV_API_CALL nv_free_user_mapping(
nv_state_t *nv,
void *pAllocPrivate,
NvU64 userAddress,
void *pPrivate
)
{
return NV_OK;
}
/*
* This function adjust the {mmap,access}_{start,size} to reflect platform-specific
* mechanisms for isolating mappings at a finer granularity than the os_page_size
*/
NV_STATUS NV_API_CALL nv_get_usermap_access_params(
nv_state_t *nv,
nv_usermap_access_params_t *nvuap
)
{
NvU64 addr = nvuap->addr;
NvU64 size = nvuap->size;
nvuap->remap_prot_extra = 0;
/*
* Do verification and cache encoding based on the original
* (ostensibly smaller) mmap request, since accesses should be
* restricted to that range.
*/
if (rm_gpu_need_4k_page_isolation(nv) &&
NV_4K_PAGE_ISOLATION_REQUIRED(addr, size))
{
#if defined(NV_4K_PAGE_ISOLATION_PRESENT)
nvuap->remap_prot_extra = NV_PROT_4K_PAGE_ISOLATION;
nvuap->access_start = (NvU64)NV_4K_PAGE_ISOLATION_ACCESS_START(addr);
nvuap->access_size = NV_4K_PAGE_ISOLATION_ACCESS_LEN(addr, size);
nvuap->mmap_start = (NvU64)NV_4K_PAGE_ISOLATION_MMAP_ADDR(addr);
nvuap->mmap_size = NV_4K_PAGE_ISOLATION_MMAP_LEN(size);
#else
NV_DEV_PRINTF(NV_DBG_ERRORS, nv, "4K page isolation required but not available!\n");
return NV_ERR_OPERATING_SYSTEM;
#endif
}
return NV_OK;
}
|
