Changeset d0cf9de in mainline

Timestamp:

2006-03-12T20:43:20Z (19 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

2cc5e050

Parents:

9295b0cf

Message:

Itanium tlb_invalidate_pages

Files:

• arch/ia64/include/mm/frame.h (modified) (1 diff)
• arch/ia64/include/mm/memory_init.h (modified) (1 diff)
• arch/ia64/src/mm/tlb.c (modified) (2 diffs)
• test/mm/purge1/test.c (modified) (3 diffs)

arch/ia64/include/mm/frame.h

@@ -30 +30 @@
 #define __ia64_FRAME_H__
 
-#define FRAME_WIDTH   14        /* 64K */
+#define FRAME_WIDTH   14        /* 16K */
 #define FRAME_SIZE              (1<<FRAME_WIDTH)
 

arch/ia64/include/mm/memory_init.h

@@ -32 +32 @@
 #include <config.h>
 
-#define get_memory_size()       (512*1024*1024)         /* 512M */
+#define get_memory_size()       (32*1024*1024)          /* 512M */
 
 #endif

arch/ia64/src/mm/tlb.c

@@ -45 +45 @@
 #include <arch.h>
 
+
+
 /** Invalidate all TLB entries. */
 void tlb_invalidate_all(void)
@@ -92 +94 @@
 }
 
-
-void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt)
-{
+extern void d(void);
+void d(void)
+{
+}
+
+
+void tlb_invalidate_pages(asid_t asid, __address va, count_t cnt)
+{
+
+
+        region_register rr;
+        bool restore_rr = false;
+        int b=0;
+        int c=cnt;
+        int i;
+
+        rr.word = rr_read(VA2VRN(va));
+        if ((restore_rr = (rr.map.rid != ASID2RID(asid, VA2VRN(va))))) {
+                /*
+                 * The selected region register does not contain required RID.
+                 * Save the old content of the register and replace the RID.
+                 */
+                region_register rr0;
+
+                rr0 = rr;
+                rr0.map.rid = ASID2RID(asid, VA2VRN(va));
+                rr_write(VA2VRN(va), rr0.word);
+                srlz_d();
+                srlz_i();
+        }
+        
+        while(c>>=1)    b++;
+        b>>=1;
+        __u64 ps;
+        
+        switch(b)
+        {
+                case 0: /*cnt 1-3*/
+                {
+                        ps=PAGE_WIDTH;
+                        break;
+                }
+                case 1: /*cnt 4-15*/
+                {
+                        cnt=(cnt/4)+1;
+                        ps=PAGE_WIDTH+2;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 2: /*cnt 16-63*/
+                {
+                        cnt=(cnt/16)+1;
+                        ps=PAGE_WIDTH+4;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 3: /*cnt 64-255*/
+                {
+                        cnt=(cnt/64)+1;
+                        ps=PAGE_WIDTH+6;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 4: /*cnt 256-1023*/
+                {
+                        cnt=(cnt/256)+1;
+                        ps=PAGE_WIDTH+8;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 5: /*cnt 1024-4095*/
+                {
+                        cnt=(cnt/1024)+1;
+                        ps=PAGE_WIDTH+10;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 6: /*cnt 4096-16383*/
+                {
+                        cnt=(cnt/4096)+1;
+                        ps=PAGE_WIDTH+12;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                case 7: /*cnt 16384-65535*/
+                case 8: /*cnt 65536-(256K-1)*/
+                {
+                        cnt=(cnt/16384)+1;
+                        ps=PAGE_WIDTH+14;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                default:
+                {
+                        cnt=(cnt/(16384*16))+1;
+                        ps=PAGE_WIDTH+18;
+                        va&=~((1<<ps)-1);
+                        break;
+                }
+                        
+        }
+        d();
+        for(i=0;i<cnt;i++)      {
+        __asm__ volatile 
+        (
+                "ptc.l %0,%1;;"
+                :
+                : "r"(va), "r"(ps<<2)
+        );
+        va+=(1<<ps);
+        }
+        srlz_d();
+        srlz_i();
+        
+        
+        if (restore_rr) {
+                rr_write(VA2VRN(va), rr.word);
+                srlz_d();
+                srlz_i();
+        }
 
 

test/mm/purge1/test.c

@@ -38 +38 @@
 
 extern void tlb_invalidate_all(void);
-
-
+extern void tlb_invalidate_pages(asid_t asid, __address va, count_t cnt);
 void test(void)
 {
@@ -73 +72 @@
 
         
-        for(i=0;i<256;i++)
+        for(i=0;i<100;i++)
         {
                 itc_mapping_insert(0+i*(1<<PAGE_WIDTH),8,entryi);
@@ -79 +78 @@
         }       
         
+
+        tlb_invalidate_pages(8,0x18000,13);
         
-        tlb_invalidate_all();
+        /*tlb_invalidate_all();*/
         
 }