WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ia64/include/mm/page.h

 /*
+ * Copyright (C) 2005 - 2006 Jakub Jermar
- * Copyright (C) 2005 Jakub Jermar
+ * Copyright (C) 2006 Jakub Vana
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  */
 #ifndef __ia64_PAGE_H__
 #define __ia64_PAGE_H__
-#include <arch/types.h>
 #include <arch/mm/frame.h>
+#include <genarch/mm/page_ht.h>
+#include <arch/types.h>
+#include <typedefs.h>
+#include <debug.h>
 #define PAGE_SIZE   FRAME_SIZE
 #define PAGE_WIDTH  FRAME_WIDTH
 #define KA2PA(x)    ((__address) (x))
 #define HT_INVALIDATE_SLOT_ARCH(t)
 #define HT_GET_NEXT_ARCH(t)     0
 #define HT_SET_NEXT_ARCH(t, s)
 #define HT_SET_RECORD_ARCH(t, page, asid, frame, flags)
-#define REGION_RID_MAIN 0
+#define VRN_KERNEL          0
-#define REGION_RID_FIRST_INVALID 16
-#define REGION_REGISTERS 8
+#define REGION_REGISTERS        8
-#define VHPT_WIDTH 16         /*64kB*/
+#define VHPT_WIDTH          20          /* 1M */
-#define VHPT_SIZE (1<<VHPT_WIDTH)
+#define VHPT_SIZE           (1<<VHPT_WIDTH)
-#define VHPT_BASE 0           /* Must be aligned to VHPT_SIZE */
+#define VHPT_BASE           page_ht     /* Must be aligned to VHPT_SIZE */
-struct VHPT_tag_info
+struct vhpt_tag_info {
-{
-    unsigned long long tag       :63;
+    unsigned long long tag : 63;
-    unsigned           ti        : 1;
+    unsigned ti : 1;
-}__attribute__ ((packed));
+} __attribute__ ((packed));
-union VHPT_tag
+union vhpt_tag {
-{
-    struct VHPT_tag_info tag_info;
+    struct vhpt_tag_info tag_info;
-    unsigned             tag_word;
+    unsigned tag_word;
 };
-struct VHPT_entry_present
+struct vhpt_entry_present {
-{
     /* Word 0 */
-    unsigned p              : 1;
+    unsigned p : 1;
-    unsigned rv0            : 1;
+    unsigned : 1;
-    unsigned ma             : 3;
+    unsigned ma : 3;
-    unsigned a              : 1;
+    unsigned a : 1;
-    unsigned d              : 1;
+    unsigned d : 1;
-    unsigned pl             : 2;
+    unsigned pl : 2;
-    unsigned ar             : 3;
+    unsigned ar : 3;
-    unsigned long long ppn  :38;
+    unsigned long long ppn : 38;
-    unsigned rv1            : 2;
+    unsigned : 2;
-    unsigned ed             : 1;
+    unsigned ed : 1;
-    unsigned ig1            :11;
+    unsigned ig1 : 11;
     /* Word 1 */
-    unsigned rv2            : 2;
+    unsigned : 2;
-    unsigned ps             : 6;
+    unsigned ps : 6;
-    unsigned key            :24;
+    unsigned key : 24;
-    unsigned rv3            :32;
+    unsigned : 32;
     /* Word 2 */
-    union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/
-                            /* But I'm almost sure we nead access to whole word so there are both possibilities*/
-    /* Word 3 */
+    union vhpt_tag tag;
-    unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/
+    /* Word 3 */
+    unsigned long long next : 64;   /**< Collision chain next pointer. */
-}__attribute__ ((packed));
+} __attribute__ ((packed));
-struct VHPT_entry_not_present
+struct vhpt_entry_not_present {
-{
     /* Word 0 */
-    unsigned p              : 1;
+    unsigned p : 1;
-    unsigned long long ig0  :52;
+    unsigned long long ig0 : 52;
-    unsigned ig1            :11;
+    unsigned ig1 : 11;
     /* Word 1 */
-    unsigned rv2            : 2;
+    unsigned : 2;
-    unsigned ps             : 6;
+    unsigned ps : 6;
-    unsigned long long ig2  :56;
+    unsigned long long ig2 : 56;
     /* Word 2 */
-    union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/
+    union vhpt_tag tag;
-                            /* But I'm almost sure we nead access to whole word so there are both possibilities*/
     /* Word 3 */
-    unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/
+    unsigned long long next : 64;   /**< Collision chain next pointer. */
-}__attribute__ ((packed));
+} __attribute__ ((packed));
+typedef union vhpt_entry {
+    struct vhpt_entry_present present;
+    struct vhpt_entry_not_present not_present;
+} vhpt_entry;
+struct region_register_map {
+    unsigned ve : 1;
+    unsigned : 1;
+    unsigned ps : 6;
+    unsigned rid : 24;
+    unsigned : 32;
+} __attribute__ ((packed));
+typedef union region_register {
+    struct region_register_map map;
+    unsigned long long word;
+} region_register;
+struct pta_register_map {
+    unsigned ve : 1;
+    unsigned : 1;
+    unsigned size : 6;
+    unsigned vf : 1;
+    unsigned : 6;
+    unsigned long long base : 49;
+} __attribute__ ((packed));
+typedef union pta_register {
+    struct pta_register_map map;
+    __u64 word;
+} pta_register;
-typedef union VHPT_entry
+/** Return Translation Hashed Entry Address.
+ *
+ * VRN bits are used to read RID (ASID) from one
+ * of the eight region registers registers.
+ *
+ * @param va Virtual address including VRN bits.
+ *
+ * @return Address of the head of VHPT collision chain.
+ */
+static inline __u64 thash(__u64 va)
+{
-    struct VHPT_entry_present        present;
-    struct VHPT_entry_not_present    not_present;
-}VHPT_entry;
+    __u64 ret;
-extern void page_arch_init(void);
+    __asm__ volatile ("thash %0 = %1\n" : "=r" (ret) : "r" (va));
+    return ret;
+}
+/** Return Translation Hashed Entry Tag.
+ *
+ * VRN bits are used to read RID (ASID) from one
-struct region_register_map
+ * of the eight region registers.
+ *
+ * @param va Virtual address including VRN bits.
+ *
+ * @return The unique tag for VPN and RID in the collision chain returned by thash().
+ */
+static inline __u64 ttag(__u64 va)
+{
-  unsigned ve            : 1;
-    unsigned r0            : 1;
-    unsigned ps            : 6;
-    unsigned rid           :24;
-    unsigned r1            :32;
-}__attribute__ ((packed));
+    __u64 ret;
+    __asm__ volatile ("ttag %0 = %1\n" : "=r" (ret) : "r" (va));
-typedef union region_register
+    return ret;
-{
+}
-    struct region_register_map   map;
-    unsigned long long           word;
-}region_register;
-struct PTA_register_map
+/** Read Region Register.
+ *
+ * @param i Region register index.
+ *
+ * @return Current contents of rr[i].
+ */
+static inline __u64 rr_read(index_t i)
+{
-  unsigned ve            : 1;
-    unsigned r0            : 1;
-    unsigned size          : 6;
+    __u64 ret;
-    unsigned vf            : 1;
+//  ASSERT(i < REGION_REGISTERS);
-    unsigned r1            : 6;
+    __asm__ volatile ("mov %0 = rr[%1]\n" : "=r" (ret) : "r" (i));
-    unsigned long long base:49;
-}__attribute__ ((packed));
+    return ret;
+}
-typedef union PTA_register
+/** Write Region Register.
+ *
+ * @param i Region register index.
+ * @param v Value to be written to rr[i].
+ */
+static inline void rr_write(index_t i, __u64 v)
+{
+//  ASSERT(i < REGION_REGISTERS);
+    __asm__ volatile ("mov rr[%0] = %1\n" : : "r" (i), "r" (v));
+}
+/** Read Page Table Register.
+ *
+ * @return Current value stored in PTA.
+ */
+static inline __u64 pta_read(void)
+{
+    __u64 ret;
+    __asm__ volatile ("mov %0 = cr.pta\n" : "=r" (ret));
+    return ret;
+}
+/** Write Page Table Register.
+ *
+ * @param v New value to be stored in PTA.
+ */
+static inline void pta_write(__u64 v)
+{
-    struct PTA_register_map   map;
-    unsigned long long        word;
+    __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));
-}PTA_register;
+}
+extern void page_arch_init(void);
 #endif

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ia64/include/mm/page.h @ 1170 – Rev 746 → 747