2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 #include <sys/types.h>
18 #include <sys/mount.h>
20 #include <sys/fcntl.h>
24 #include <vppinfra/linux/syscall.h>
25 #include <vppinfra/linux/sysfs.h>
26 #include <vlib/vlib.h>
27 #include <vlib/physmem.h>
28 #include <vlib/unix/unix.h>
29 #include <vlib/pci/pci.h>
30 #include <vlib/linux/vfio.h>
33 vlib_physmem_shared_map_create (vlib_main_t * vm, char *name, uword size,
34 u32 numa_node, u32 * map_index)
36 clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
37 vlib_physmem_main_t *vpm = &vm->physmem_main;
38 vlib_physmem_map_t *map;
39 clib_pmalloc_arena_t *a;
40 clib_error_t *error = 0;
44 va = clib_pmalloc_create_shared_arena (pm, name, size, numa_node);
47 return clib_error_return (0, "%U", format_clib_error,
48 clib_pmalloc_last_error (pm));
50 a = clib_pmalloc_get_arena (pm, va);
52 pool_get (vpm->maps, map);
53 *map_index = map->index = map - vpm->maps;
56 map->n_pages = a->n_pages;
57 map->log2_page_size = a->log2_page_sz;
59 for (i = 0; i < a->n_pages; i++)
61 uword pa = clib_pmalloc_get_pa (pm, (u8 *) va + (i << a->log2_page_sz));
65 pa = pointer_to_uword (va);
67 vec_add1 (map->page_table, pa);
74 vlib_physmem_get_map (vlib_main_t * vm, u32 index)
76 vlib_physmem_main_t *vpm = &vm->physmem_main;
77 return pool_elt_at_index (vpm->maps, index);
81 vlib_physmem_init (vlib_main_t * vm)
83 vlib_physmem_main_t *vpm = &vm->physmem_main;
84 clib_error_t *error = 0;
88 /* check if pagemap is accessible */
89 pt = clib_mem_vm_get_paddr (&pt, min_log2 (sysconf (_SC_PAGESIZE)), 1);
91 vpm->flags |= VLIB_PHYSMEM_MAIN_F_HAVE_PAGEMAP;
94 if ((error = linux_vfio_init (vm)))
97 p = clib_mem_alloc_aligned (sizeof (clib_pmalloc_main_t),
98 CLIB_CACHE_LINE_BYTES);
99 memset (p, 0, sizeof (clib_pmalloc_main_t));
100 vpm->pmalloc_main = (clib_pmalloc_main_t *) p;
101 clib_pmalloc_init (vpm->pmalloc_main, 0);
106 static clib_error_t *
107 show_physmem (vlib_main_t * vm,
108 unformat_input_t * input, vlib_cli_command_t * cmd)
110 vlib_physmem_main_t *vpm = &vm->physmem_main;
111 unformat_input_t _line_input, *line_input = &_line_input;
114 if (unformat_user (input, unformat_line_input, line_input))
116 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
118 if (unformat (line_input, "verbose"))
120 else if (unformat (line_input, "v"))
122 else if (unformat (line_input, "detail"))
124 else if (unformat (line_input, "d"))
129 unformat_free (line_input);
132 vlib_cli_output (vm, " %U", format_pmalloc, vpm->pmalloc_main, verbose);
137 VLIB_CLI_COMMAND (show_physmem_command, static) = {
138 .path = "show physmem",
139 .short_help = "Show physical memory allocation",
140 .function = show_physmem,
145 * fd.io coding-style-patch-verification: ON
148 * eval: (c-set-style "gnu")