honeycomb - ARCHIVED- 2020-12-03 at the request of the project

Age	Commit message (Expand)	Author	Files	Lines
2016-09-26	HONEYCOMB-209 Configure maven site	Maros Marsalek	1	-0/+10

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * physmem.h: virtual <-> physical memory mapping for VLIB buffers * * Copyright (c) 2008 Eliot Dresselhaus * * 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. */ #ifndef included_vlib_physmem_h #define included_vlib_physmem_h typedef struct { uword start, end, size; } vlib_physmem_region_t; typedef struct { vlib_physmem_region_t virtual; uword log2_n_bytes_per_page; /* 1 << log2_n_bytes_per_page - 1. */ uword page_mask; u64 *page_table; /* is fake physmem */ u8 is_fake; } vlib_physmem_main_t; always_inline u64 vlib_physmem_offset_to_physical (vlib_physmem_main_t * pm, uword o) { uword page_index = o >> pm->log2_n_bytes_per_page; ASSERT (o < pm->virtual.size); ASSERT (pm->page_table[page_index] != 0); return (vec_elt (pm->page_table, page_index) + (o & pm->page_mask)); } always_inline int vlib_physmem_is_virtual (vlib_physmem_main_t * pm, uword p) { return p >= pm->virtual.start && p < pm->virtual.end; } always_inline uword vlib_physmem_offset_of (vlib_physmem_main_t * pm, void *p) { uword a = pointer_to_uword (p); uword o; ASSERT (vlib_physmem_is_virtual (pm, a)); o = a - pm->virtual.start; /* Offset must fit in 32 bits. */ ASSERT ((uword) o == a - pm->virtual.start); return o; } always_inline void * vlib_physmem_at_offset (vlib_physmem_main_t * pm, uword offset) { ASSERT (offset < pm->virtual.size); return uword_to_pointer (pm->virtual.start + offset, void *); } #endif /* included_vlib_physmem_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */