From eec633d16fe2ce6e740c1848209ebb8b6d9b60bd Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Fri, 12 Jan 2024 00:07:32 -0500
Subject: kernel/amd64: pmap: Add pmap_map() routine

Add pmap_map() routine for creating virtual memory
mappings.

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/vm/pmap.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'sys/include/vm/pmap.h')

diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h
index 4d7a06f..e35d14a 100644
--- a/sys/include/vm/pmap.h
+++ b/sys/include/vm/pmap.h
@@ -49,6 +49,10 @@
 #include <sys/types.h>
 #include <sys/spinlock.h>
 
+/* prot flags for mappings */
+#define PMAP_WRITABLE __BIT(0)      /* Writable */
+#define PMAP_EXEC     __BIT(1)      /* Executable */
+
 /*
  * vm_ctx - Per core virtual memory context
  */
@@ -65,4 +69,9 @@ struct vm_ctx {
  */
 struct vas pmap_read_vas(void);
 
+/*
+ * Map a physical address to a virtual address.
+ */
+int pmap_map(struct vm_ctx *, vaddr_t, paddr_t, vm_prot_t);
+
 #endif  /* _VM_PMAP_H_ */
-- 
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