[Xen-changelog] Define VHPT constants from VHPT_SIZE_LOG2.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User djm@xxxxxxxxxxxxxxx
# Node ID 91268555f215aa2514dd40f395b6f997d4fffbd6
# Parent  998e85f9963d22c4da505909b6804fc8afc9da32
Define VHPT constants from VHPT_SIZE_LOG2.
Prototypes added.

diff -r 998e85f9963d -r 91268555f215 xen/include/asm-ia64/vhpt.h
--- a/xen/include/asm-ia64/vhpt.h       Mon Oct 24 16:46:39 2005
+++ b/xen/include/asm-ia64/vhpt.h       Mon Oct 24 17:31:09 2005
@@ -5,27 +5,16 @@
 #define VHPT_ENABLED_REGION_0_TO_6 1
 #define VHPT_ENABLED_REGION_7 0
 
-
-#if 0
+/* Size of the VHPT.  */
+#define        VHPT_SIZE_LOG2                  24
+
+/* Number of entries in the VHPT.  The size of an entry is 4*8B == 32B */
+#define        VHPT_NUM_ENTRIES                (1 << (VHPT_SIZE_LOG2 - 5))
+
+#define VHPT_CACHE_MASK                        (VHPT_NUM_ENTRIES - 1)
 #define        VHPT_CACHE_ENTRY_SIZE           64
-#define        VHPT_CACHE_MASK                 2097151
-#define        VHPT_CACHE_NUM_ENTRIES          32768
-#define        VHPT_NUM_ENTRIES                2097152
-#define        VHPT_CACHE_ENTRY_SIZE_LOG2      6
-#define        VHPT_SIZE_LOG2                  26      //????
-#define        VHPT_PAGE_SHIFT                 26      //????
-#else
-//#define      VHPT_CACHE_NUM_ENTRIES          2048
-//#define      VHPT_NUM_ENTRIES                131072
-//#define      VHPT_CACHE_MASK                 131071
-//#define      VHPT_SIZE_LOG2                  22      //????
-#define        VHPT_CACHE_ENTRY_SIZE           64
-#define        VHPT_CACHE_NUM_ENTRIES          8192
-#define        VHPT_NUM_ENTRIES                524288
-#define        VHPT_CACHE_MASK                 524287
-#define        VHPT_SIZE_LOG2                  24      //????
-#define        VHPT_PAGE_SHIFT                 24      //????
-#endif
+
+#define        VHPT_PAGE_SHIFT                 VHPT_SIZE_LOG2
 
 // FIXME: These should be automatically generated
 
@@ -52,7 +41,7 @@
 // VHPT collison chain entry (part of the "V-Cache")
 // DO NOT CHANGE THE SIZE OF THIS STRUCTURE (see vhpt.S banked regs 
calculations)
 //
-typedef struct vcache_entry {
+struct vcache_entry {
     union {
         struct {
             unsigned long tag  : 63; // 0-62
@@ -123,12 +112,21 @@
 
 #define INVALID_TI_TAG 0x8000000000000000L
 
+extern void vhpt_init (void);
+extern void zero_vhpt_stats(void);
+extern int dump_vhpt_stats(char *buf);
+extern void vhpt_flush_address(unsigned long vadr, unsigned long addr_range);
+extern void vhpt_multiple_insert(unsigned long vaddr, unsigned long pte,
+                                unsigned long logps);
+extern void vhpt_insert (unsigned long vadr, unsigned long ptr,
+                        unsigned logps);
+extern void vhpt_flush(void);
 #endif /* !__ASSEMBLY */
 
 #if !VHPT_ENABLED
 #define VHPT_CCHAIN_LOOKUP(Name, i_or_d)
 #else
-#ifdef CONFIG_SMP
+#if 0 /* One VHPT per cpu! def CONFIG_SMP */
 #warning "FIXME SMP: VHPT_CCHAIN_LOOKUP needs a semaphore on the VHPT!"
 #endif
 

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