Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2015 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:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       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.
      14             :  */
      15             : /*
      16             :  * physmem.h: virtual <-> physical memory mapping for VLIB buffers
      17             :  *
      18             :  * Copyright (c) 2008 Eliot Dresselhaus
      19             :  *
      20             :  * Permission is hereby granted, free of charge, to any person obtaining
      21             :  * a copy of this software and associated documentation files (the
      22             :  * "Software"), to deal in the Software without restriction, including
      23             :  * without limitation the rights to use, copy, modify, merge, publish,
      24             :  * distribute, sublicense, and/or sell copies of the Software, and to
      25             :  * permit persons to whom the Software is furnished to do so, subject to
      26             :  * the following conditions:
      27             :  *
      28             :  * The above copyright notice and this permission notice shall be
      29             :  * included in all copies or substantial portions of the Software.
      30             :  *
      31             :  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      32             :  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      33             :  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      34             :  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
      35             :  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
      36             :  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
      37             :  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      38             :  */
      39             : 
      40             : #ifndef included_vlib_physmem_funcs_h
      41             : #define included_vlib_physmem_funcs_h
      42             : 
      43             : #include <vppinfra/clib.h>
      44             : #include <vppinfra/clib_error.h>
      45             : #include <vlib/physmem.h>
      46             : #include <vlib/main.h>
      47             : 
      48             : clib_error_t *vlib_physmem_init (vlib_main_t * vm);
      49             : clib_error_t *vlib_physmem_shared_map_create (vlib_main_t * vm, char *name,
      50             :                                               uword size, u32 log2_page_sz,
      51             :                                               u32 numa_node, u32 * map_index);
      52             : 
      53             : vlib_physmem_map_t *vlib_physmem_get_map (vlib_main_t * vm, u32 index);
      54             : 
      55             : always_inline void *
      56           0 : vlib_physmem_alloc_aligned (vlib_main_t * vm, uword n_bytes, uword alignment)
      57             : {
      58           0 :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
      59           0 :   return clib_pmalloc_alloc_aligned (pm, n_bytes, alignment);
      60             : }
      61             : 
      62             : always_inline void *
      63           0 : vlib_physmem_alloc_aligned_on_numa (vlib_main_t * vm, uword n_bytes,
      64             :                                     uword alignment, u32 numa_node)
      65             : {
      66           0 :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
      67           0 :   return clib_pmalloc_alloc_aligned_on_numa (pm, n_bytes, alignment,
      68             :                                              numa_node);
      69             : }
      70             : 
      71             : /* By default allocate I/O memory with cache line alignment. */
      72             : always_inline void *
      73           0 : vlib_physmem_alloc (vlib_main_t * vm, uword n_bytes)
      74             : {
      75           0 :   return vlib_physmem_alloc_aligned (vm, n_bytes, CLIB_CACHE_LINE_BYTES);
      76             : }
      77             : 
      78             : always_inline void *
      79             : vlib_physmem_alloc_from_map (vlib_main_t * vm, u32 physmem_map_index,
      80             :                              uword n_bytes, uword alignment)
      81             : {
      82             :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
      83             :   vlib_physmem_map_t *map = vlib_physmem_get_map (vm, physmem_map_index);
      84             :   return clib_pmalloc_alloc_from_arena (pm, map->base, n_bytes,
      85             :                                         CLIB_CACHE_LINE_BYTES);
      86             : }
      87             : 
      88             : always_inline void
      89           0 : vlib_physmem_free (vlib_main_t * vm, void *p)
      90             : {
      91           0 :   if (p)
      92           0 :     clib_pmalloc_free (vm->physmem_main.pmalloc_main, p);
      93           0 : }
      94             : 
      95             : always_inline u64
      96           0 : vlib_physmem_get_page_index (vlib_main_t * vm, void *mem)
      97             : {
      98           0 :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
      99           0 :   return clib_pmalloc_get_page_index (pm, mem);
     100             : }
     101             : 
     102             : always_inline u64
     103           2 : vlib_physmem_get_pa (vlib_main_t * vm, void *mem)
     104             : {
     105           2 :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
     106           2 :   return clib_pmalloc_get_pa (pm, mem);
     107             : }
     108             : 
     109             : always_inline clib_error_t *
     110           0 : vlib_physmem_last_error (struct vlib_main_t * vm)
     111             : {
     112           0 :   clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
     113           0 :   return pm->error;
     114             : }
     115             : 
     116             : #endif /* included_vlib_physmem_funcs_h */
     117             : 
     118             : /*
     119             :  * fd.io coding-style-patch-verification: ON
     120             :  *
     121             :  * Local Variables:
     122             :  * eval: (c-set-style "gnu")
     123             :  * End:
     124             :  */