patch-1.3.4 linux/include/asm-sparc/pgtsfmmu.h

• Lines: 30
• Date: Sat Jun 17 08:25:16 1995
• Orig file: v1.3.3/linux/include/asm-sparc/pgtsfmmu.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.3/linux/include/asm-sparc/pgtsfmmu.h linux/include/asm-sparc/pgtsfmmu.h
@@ -0,0 +1,29 @@
+/* pgtsfmmu.h:  Spitfire V9 MMU support goes here.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC_PGTSFMMU_H
+#define _SPARC_PGTSFMMU_H
+
+/* Spitfire is four-level.... I think... It also has a seperate TLB for
+ * data and instruction mappings.
+ */
+#define SFMMU_PMD_SHIFT       16
+#define SFMMU_PMD_SIZE        (1UL << SFMMU_PMD_SHIFT)
+#define SFMMU_PMD_MASK        (~(SFMMU_PMD_SIZE-1))
+#define SFMMU_PMD_ALIGN(addr) (((addr)+SFMMU_PMD_SIZE-1)&SFMMU_PMD_MASK)
+
+#define SFMMU_PGDIR_SHIFT     19
+#define SFMMU_PGDIR_SIZE        (1UL << SFMMU_PGDIR_SHIFT)
+#define SFMMU_PGDIR_MASK        (~(SFMMU_PGDIR_SIZE-1))
+#define SFMMU_PGDIR_ALIGN(addr) (((addr)+SFMMU_PGDIR_SIZE-1)&SFMMU_PGDIR_MASK)
+
+#define SFMMU_PGMAP_SHIFT     22
+#define SFMMU_PGDIR_SIZE        (1UL << SFMMU_PGDIR_SHIFT)
+#define SFMMU_PGDIR_MASK        (~(SFMMU_PGDIR_SIZE-1))
+#define SFMMU_PGDIR_ALIGN(addr) (((addr)+SFMMU_PGDIR_SIZE-1)&SFMMU_PGDIR_MASK)
+
+
+#endif /* !(_SPARC_PGTSFMMU_H) */
+