diff options
author | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
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committer | Ian Moffett <ian@osmora.org> | 2024-06-24 22:55:29 -0400 |
commit | 236963e7563be3e3f8220dac7bb4af446928e194 (patch) | |
tree | e521ea226db0345bbb3679fffe09d96254b7dc73 /sys/include/vm/pmap.h | |
parent | 214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff) |
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/vm/pmap.h')
-rw-r--r-- | sys/include/vm/pmap.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h deleted file mode 100644 index cb18885..0000000 --- a/sys/include/vm/pmap.h +++ /dev/null @@ -1,117 +0,0 @@ -/* - * Copyright (c) 2023-2024 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_PMAP_H_ -#define _VM_PMAP_H_ - -/* - * Each architecture is expected to implement - * this header. It should contain a `struct vas' - * which will contain information about a VAS - * (virtual address space) - * - * On AMD64 this struct contains: PML4, etc - * - * XXX: Compiler errors pointing to this include means you - * forgot to implement it!!! - * - * `struct vas' MUST have a `struct spinlock lock' field!!! - */ -#include <machine/vas.h> - -#include <vm/tlsf.h> -#include <sys/types.h> -#include <sys/spinlock.h> - -/* prot flags for mappings */ -#define PROT_WRITE __BIT(0) /* Writable */ -#define PROT_EXEC __BIT(1) /* Executable */ -#define PROT_USER __BIT(2) /* User accessible */ - -/* Caching types */ -#define VM_CACHE_UC 0x00000U /* Uncachable */ -#define VM_CACHE_WT 0x00001U /* Write-through */ - -#define is_vas_valid(vas) (vas.top_level != 0) - -/* - * vm_ctx - Per core virtual memory context - */ -struct vm_ctx { - uintptr_t dynalloc_pool_phys; - size_t dynalloc_pool_sz; /* In bytes */ - tlsf_t tlsf_ctx; - struct spinlock dynalloc_lock; -}; - -/* - * Mark a virtual address with a specific caching - * type. - */ -int pmap_set_cache(struct vm_ctx *, struct vas, vaddr_t, int); - -/* - * Create a virtual address space - * and return the descriptor. - */ -int pmap_create_vas(struct vm_ctx *, struct vas *); - -/* - * Switch the current virtual address space - * to another. - */ -void pmap_switch_vas(struct vm_ctx *, struct vas); - -/* - * Read virtual address space descriptor - * and return it. - */ -struct vas pmap_read_vas(void); - -/* - * Map a physical address to a virtual address. - */ -int pmap_map(struct vm_ctx *, struct vas, vaddr_t, paddr_t, vm_prot_t); - -/* - * Get rid of a virtual address space and free - * resources. - */ -int pmap_free_vas(struct vm_ctx *, struct vas); - -/* - * Unmap a page. - */ -int pmap_unmap(struct vm_ctx *, struct vas, vaddr_t); - -/* - * Architecture specific init code for pmap - */ -int pmap_init(struct vm_ctx *); -#endif /* _VM_PMAP_H_ */ |