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-rw-r--r--sys/inc/vm/map.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/inc/vm/map.h b/sys/inc/vm/map.h
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+/*
+ * 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_ */