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 log2_page_sz, u32 numa_node,
37 clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
38 vlib_physmem_main_t *vpm = &vm->physmem_main;
39 vlib_physmem_map_t *map;
40 clib_pmalloc_arena_t *a;
41 clib_error_t *error = 0;
45 va = clib_pmalloc_create_shared_arena (pm, name, size, log2_page_sz,
49 return clib_error_return (0, "%U", format_clib_error,
50 clib_pmalloc_last_error (pm));
52 a = clib_pmalloc_get_arena (pm, va);
54 pool_get (vpm->maps, map);
55 *map_index = map->index = map - vpm->maps;
58 map->n_pages = a->n_pages * a->subpages_per_page;
59 map->log2_page_size = a->log2_subpage_sz;
60 map->numa_node = a->numa_node;
62 for (i = 0; i < a->n_pages; i++)
65 clib_pmalloc_get_pa (pm, (u8 *) va + (i << a->log2_subpage_sz));
69 pa = pointer_to_uword (va);
71 vec_add1 (map->page_table, pa);
78 vlib_physmem_get_map (vlib_main_t * vm, u32 index)
80 vlib_physmem_main_t *vpm = &vm->physmem_main;
81 return pool_elt_at_index (vpm->maps, index);
85 vlib_physmem_init (vlib_main_t * vm)
87 vlib_physmem_main_t *vpm = &vm->physmem_main;
88 clib_error_t *error = 0;
92 /* check if pagemap is accessible */
93 pt = clib_mem_vm_get_paddr (&pt, min_log2 (sysconf (_SC_PAGESIZE)), 1);
95 vpm->flags |= VLIB_PHYSMEM_MAIN_F_HAVE_PAGEMAP;
98 if ((error = linux_vfio_init (vm)))
101 p = clib_mem_alloc_aligned (sizeof (clib_pmalloc_main_t),
102 CLIB_CACHE_LINE_BYTES);
103 memset (p, 0, sizeof (clib_pmalloc_main_t));
104 vpm->pmalloc_main = (clib_pmalloc_main_t *) p;
105 clib_pmalloc_init (vpm->pmalloc_main, 0);
110 static clib_error_t *
111 show_physmem (vlib_main_t * vm,
112 unformat_input_t * input, vlib_cli_command_t * cmd)
114 vlib_physmem_main_t *vpm = &vm->physmem_main;
115 unformat_input_t _line_input, *line_input = &_line_input;
116 u32 verbose = 0, map = 0;
118 if (unformat_user (input, unformat_line_input, line_input))
120 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
122 if (unformat (line_input, "verbose"))
124 else if (unformat (line_input, "v"))
126 else if (unformat (line_input, "detail"))
128 else if (unformat (line_input, "d"))
130 else if (unformat (line_input, "map"))
135 unformat_free (line_input);
139 vlib_cli_output (vm, " %U", format_pmalloc_map, vpm->pmalloc_main);
141 vlib_cli_output (vm, " %U", format_pmalloc, vpm->pmalloc_main, verbose);
147 VLIB_CLI_COMMAND (show_physmem_command, static) = {
148 .path = "show physmem",
149 .short_help = "show physmem [verbose | detail | map]",
150 .function = show_physmem,
155 * fd.io coding-style-patch-verification: ON
158 * eval: (c-set-style "gnu")