modified copyright tags

[palacios.git] / palacios / include / palacios / vmm_paging.h

diff --git a/palacios/include/palacios/vmm_paging.h b/palacios/include/palacios/vmm_paging.h
index edc1d6f..e11a452 100644 (file)
--- a/palacios/include/palacios/vmm_paging.h
+++ b/palacios/include/palacios/vmm_paging.h
@@ -1,12 +1,11 @@
+/* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
+/* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
+
 #ifndef __VMM_PAGING_H
 #define __VMM_PAGING_H
 
 
 #include <palacios/vmm_types.h>
-
-
-
-#include <palacios/vmm_mem.h>
 #include <palacios/vmm_util.h>
 
 /*
@@ -90,11 +89,15 @@ the host state in the vmcs before entering the guest.
 /* Gets the base address needed for a Page Table entry */
 #define PD32_BASE_ADDR(x) (((uint_t)x) >> 12)
 #define PT32_BASE_ADDR(x) (((uint_t)x) >> 12)
+#define PD32_4MB_BASE_ADDR(x) (((uint_t)x) >> 22)
 
 #define PT32_PAGE_ADDR(x)   (((uint_t)x) & 0xfffff000)
 #define PT32_PAGE_OFFSET(x) (((uint_t)x) & 0xfff)
 #define PT32_PAGE_POWER 12
 
+#define PD32_4MB_PAGE_ADDR(x) (((uint_t)x) & 0xffc00000)
+#define PD32_4MB_PAGE_OFFSET(x) (((uint_t)x) & 0x003fffff)
+#define PAGE_SIZE_4MB (4096 * 1024)
 
 /* The following should be phased out */
 #define PAGE_OFFSET(x)  ((((uint_t)x) & 0xfff))
@@ -106,41 +109,67 @@ the host state in the vmcs before entering the guest.
 
 
 
+
 #define CR3_TO_PDE32(cr3) (((ulong_t)cr3) & 0xfffff000)
 #define CR3_TO_PDPTRE(cr3) (((ulong_t)cr3) & 0xffffffe0)
 #define CR3_TO_PML4E64(cr3)  (((ullong_t)cr3) & 0x000ffffffffff000LL)
 
 
+
+
 /* Accessor functions for the page table structures */
-#define PDE32_T_ADDR(x) ((x.pt_base_addr) << 12)
-#define PTE32_T_ADDR(x) ((x.page_base_addr) << 12)
+#define PDE32_T_ADDR(x) (((x).pt_base_addr) << 12)
+#define PTE32_T_ADDR(x) (((x).page_base_addr) << 12)
+#define PDE32_4MB_T_ADDR(x) (((x).page_base_addr) << 22)
 
-#define VM_WRITE     1
-#define VM_USER      2
-#define VM_NOCACHE   8
-#define VM_READ      0
-#define VM_EXEC      0
+/* Page Table Flag Values */
+#define PT32_HOOK 0x1
+#define PT32_GUEST_PT 0x2
 
 
 #endif
 
 /* PDE 32 bit PAGE STRUCTURES */
-typedef enum {NOT_PRESENT, PTE32, LARGE_PAGE} pde32_entry_type_t;
+typedef enum {PDE32_ENTRY_NOT_PRESENT, PDE32_ENTRY_PTE32, PDE32_ENTRY_LARGE_PAGE} pde32_entry_type_t;
+typedef enum {PT_ACCESS_OK, PT_ENTRY_NOT_PRESENT, PT_WRITE_ERROR, PT_USER_ERROR} pt_access_status_t;
 
 typedef struct pde32 {
   uint_t present         : 1;
-  uint_t flags           : 4;
+  uint_t writable        : 1;
+  uint_t user_page       : 1;
+  uint_t write_through   : 1;
+  uint_t cache_disable   : 1;
   uint_t accessed        : 1;
   uint_t reserved        : 1;
-  uint_t large_pages     : 1;
+  uint_t large_page     : 1;
   uint_t global_page     : 1;
   uint_t vmm_info        : 3;
   uint_t pt_base_addr    : 20;
 } pde32_t;
 
+typedef struct pde32_4MB {
+  uint_t present         : 1;
+  uint_t writable        : 1;
+  uint_t user_page       : 1;
+  uint_t write_through   : 1;
+  uint_t cache_disable   : 1;
+  uint_t accessed        : 1;
+  uint_t dirty           : 1;
+  uint_t one             : 1;
+  uint_t global_page     : 1;
+  uint_t vmm_info        : 3;
+  uint_t pat             : 1;
+  uint_t rsvd            : 9;
+  uint_t page_base_addr  : 10;
+
+} pde32_4MB_t;
+
 typedef struct pte32 {
   uint_t present         : 1;
-  uint_t flags           : 4;
+  uint_t writable        : 1;
+  uint_t user_page       : 1;
+  uint_t write_through   : 1;
+  uint_t cache_disable   : 1;
   uint_t accessed        : 1;
   uint_t dirty           : 1;
   uint_t pte_attr        : 1;
@@ -244,9 +273,20 @@ typedef enum { PDE32 } paging_mode_t;
 void delete_page_tables_pde32(pde32_t * pde);
 
 
-pde32_entry_type_t pde32_lookup(pde32_t * pde, addr_t addr, addr_t * entry);
+pde32_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry);
 int pte32_lookup(pte32_t * pte, addr_t addr, addr_t * entry);
 
+// This assumes that the page table resides in the host address space
+// IE. IT DOES NO VM ADDR TRANSLATION
+int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr);
+
+
+
+pt_access_status_t can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t access_type);
+pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t access_type);
+
+
+
 
 
 struct guest_info;