patch-2.1.44 linux/arch/mips/mm/loadmmu.c

• Lines: 105
• Date: Thu Jun 26 12:33:38 1997
• Orig file: v2.1.43/linux/arch/mips/mm/loadmmu.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/arch/mips/mm/loadmmu.c linux/arch/mips/mm/loadmmu.c
@@ -0,0 +1,104 @@
+/* $Id: loadmmu.c,v 1.1 1997/06/06 09:34:51 ralf Exp $
+ * loadmmu.c: Setup cpu/cache specific function ptrs at boot time.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+
+#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)(unsigned long page);
+void (*copy_page)(unsigned long to, unsigned long 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)(unsigned long page);
+
+/* 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 (*load_pgd)(unsigned long pg_dir);
+void (*pgd_init)(unsigned long page);
+void (*update_mmu_cache)(struct vm_area_struct * vma,
+			 unsigned long address, pte_t pte);
+
+void (*show_regs)(struct pt_regs *);
+asmlinkage void (*resume)(void *tsk);
+
+extern void ld_mmu_r2300(void);
+extern void ld_mmu_r4xx0(void);
+extern void ld_mmu_r6000(void);
+extern void ld_mmu_tfp(void);
+extern void ld_mmu_andes(void);
+
+void loadmmu(void)
+{
+	switch(mips_cputype) {
+	case CPU_R2000:
+	case CPU_R3000:
+		printk("Loading R[23]00 MMU routines.\n");
+		ld_mmu_r2300();
+		break;
+
+	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:
+		printk("Loading R4000 MMU routines.\n");
+		ld_mmu_r4xx0();
+		break;
+
+	case CPU_R6000:
+	case CPU_R6000A:
+		printk("Loading R6000 MMU routines.\n");
+		ld_mmu_r6000();
+		break;
+
+	case CPU_R8000:
+		printk("Loading TFP MMU routines.\n");
+		ld_mmu_tfp();
+		break;
+
+	case CPU_R10000:
+		printk("Loading R10000 MMU routines.\n");
+		ld_mmu_andes();
+		break;
+
+	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.");
+	}
+}