patch-2.3.48 linux/arch/mips64/mm/loadmmu.c

• Lines: 104
• Date: Thu Feb 24 22:53:35 2000
• Orig file: v2.3.47/linux/arch/mips64/mm/loadmmu.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/arch/mips64/mm/loadmmu.c linux/arch/mips64/mm/loadmmu.c
@@ -0,0 +1,103 @@
+/* $Id: loadmmu.c,v 1.6 2000/02/24 00:12:41 ralf Exp $
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ * Copyright (C) 1997, 1999 Ralf Baechle (ralf@gnu.org)
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/bootinfo.h>
+#include <asm/sgialib.h>
+
+/* memory functions */
+void (*_clear_page)(void * page);
+void (*_copy_page)(void * to, void * from);
+
+/* Cache operations. */
+void (*_flush_cache_all)(void);
+void (*_flush_cache_mm)(struct mm_struct *mm);
+void (*_flush_cache_range)(struct mm_struct *mm, unsigned long start,
+                           unsigned long end);
+void (*_flush_cache_page)(struct vm_area_struct *vma, unsigned long page);
+void (*_flush_cache_sigtramp)(unsigned long addr);
+void (*_flush_page_to_ram)(struct page * page);
+
+/* DMA cache operations. */
+void (*_dma_cache_wback_inv)(unsigned long start, unsigned long size);
+void (*_dma_cache_wback)(unsigned long start, unsigned long size);
+void (*_dma_cache_inv)(unsigned long start, unsigned long size);
+
+/* TLB operations. */
+void (*_flush_tlb_all)(void);
+void (*_flush_tlb_mm)(struct mm_struct *mm);
+void (*_flush_tlb_range)(struct mm_struct *mm, unsigned long start,
+			unsigned long end);
+void (*_flush_tlb_page)(struct vm_area_struct *vma, unsigned long page);
+
+/* Miscellaneous. */
+void (*update_mmu_cache)(struct vm_area_struct * vma,
+			 unsigned long address, pte_t pte);
+
+void (*_show_regs)(struct pt_regs *);
+
+int (*_user_mode)(struct pt_regs *);
+
+extern void ld_mmu_r4xx0(void);
+extern void ld_mmu_andes(void);
+
+void __init load_mmu(void)
+{
+	switch(mips_cputype) {
+#if defined (CONFIG_CPU_R4300)						\
+    || defined (CONFIG_CPU_R4X00)					\
+    || defined (CONFIG_CPU_R5000)					\
+    || defined (CONFIG_CPU_NEVADA)
+	case CPU_R4000PC:
+	case CPU_R4000SC:
+	case CPU_R4000MC:
+	case CPU_R4200:
+	case CPU_R4300:
+	case CPU_R4400PC:
+	case CPU_R4400SC:
+	case CPU_R4400MC:
+	case CPU_R4600:
+	case CPU_R4640:
+	case CPU_R4650:
+	case CPU_R4700:
+	case CPU_R5000:
+	case CPU_R5000A:
+	case CPU_NEVADA:
+		printk("Loading R4000 MMU routines.\n");
+		ld_mmu_r4xx0();
+		break;
+#endif
+
+#if defined (CONFIG_CPU_R10000)
+	case CPU_R10000:
+		printk("Loading R10000 MMU routines.\n");
+		ld_mmu_andes();
+		break;
+#endif
+
+	default:
+		/* XXX We need an generic routine in the MIPS port
+		 * XXX to jabber stuff onto the screen on all machines
+		 * XXX before the console is setup.  The ARCS prom
+		 * XXX routines look good for this, but only the SGI
+		 * XXX code has a full library for that at this time.
+		 */
+		panic("Yeee, unsupported mmu/cache architecture or "
+		      "wrong compiletime kernel configuration.");
+	}
+}