diff options
Diffstat (limited to 'sys/inc')
| -rw-r--r-- | sys/inc/vm/map.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/inc/vm/map.h b/sys/inc/vm/map.h new file mode 100644 index 0000000..a290b4d --- /dev/null +++ b/sys/inc/vm/map.h @@ -0,0 +1,70 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _VM_MAP_H_ +#define _VM_MAP_H_ + +#include <sys/types.h> +#include <mu/mmu.h> + +struct vm_region { + uintptr_t pa; + uintptr_t va; + size_t page_count; + pagesize_t ps; +}; + +/* + * Map a contigious region of pages + * + * @vas: Address space to map within + * @region: Region to start mapping at + * @prot: Protection flags + * @ps: Desired pagesize + * + * Returns zero on success + */ +int vm_map_pages( + struct mmu_vas *vas, const struct vm_region *region, + uint16_t prot +); + +/* + * Unmap a contigious range of pages + * + * @vas: Addresss space to unmap from + * @va: Virtual address to unmap + * @count: Number of pages to unmap + * @ps: Page size of region + * + * Returns zero on success + */ +int vm_unmap_pages(struct mmu_vas *vas, uintptr_t va, size_t count, pagesize_t ps); + +#endif /* !_VM_MAP_H_ */ |
