Changeset 82da5f5 in mainline for arch/sparc64/src/mm/page.c

Timestamp:

2006-05-24T13:38:39Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

567807b1

Parents:

8182031

Message:

Modify sparc64 to choose optimal page size in each invocation of hw_map().
Use hw_map() to map keyboard device memory.

File:

• arch/sparc64/src/mm/page.c (modified) (3 diffs)

arch/sparc64/src/mm/page.c

@@ -32 +32 @@
 #include <mm/frame.h>
 #include <bitops.h>
+#include <debug.h>
 
 void page_arch_init(void)
@@ -41 +42 @@
 {
         unsigned int order;
+        int i;
+
+        struct {
+                int pagesize;
+                size_t increment;
+                count_t count;
+        } sizemap[] = {
+                { PAGESIZE_8K, 0, 1 },                  /* 8K */
+                { PAGESIZE_8K, PAGE_SIZE, 2 },          /* 16K */
+                { PAGESIZE_8K, PAGE_SIZE, 4 },          /* 32K */
+                { PAGESIZE_64K, 0, 1},                  /* 64K */
+                { PAGESIZE_64K, 8*PAGE_SIZE, 2 },       /* 128K */
+                { PAGESIZE_64K, 8*PAGE_SIZE, 4 },       /* 256K */
+                { PAGESIZE_512K, 0, 1 },                /* 512K */
+                { PAGESIZE_512K, 64*PAGE_SIZE, 2 },     /* 1M */
+                { PAGESIZE_512K, 64*PAGE_SIZE, 4 },     /* 2M */
+                { PAGESIZE_4M, 0, 1 }                   /* 4M */
+        };
+        
+        ASSERT(size <= 4*1024*1024);
         
         if (size <= FRAME_SIZE)
@@ -48 +69 @@
         
         __address virtaddr = PA2KA(PFN2ADDR(frame_alloc(order, FRAME_KA)));
-        
-        dtlb_insert_mapping(virtaddr, physaddr, PAGESIZE_512K, true, false);
-        dtlb_insert_mapping(virtaddr + 512 * 1024, physaddr + 512 * 1024, PAGESIZE_512K, true, false);
+
+        for (i = 0; i < sizemap[order].count; i++)
+                dtlb_insert_mapping(virtaddr + i*sizemap[order].increment,
+                                    physaddr + i*sizemap[order].increment,
+                                    sizemap[order].pagesize, true, false);
         
         return virtaddr;