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/*
* loadmmu.c: Setup cpu/cache specific function ptrs at boot time.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*
* $Id: loadmmu.c,v 1.9 1999/06/13 16:30:35 ralf Exp $
*/
#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)(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);
/* 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 (*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 *);
void (*add_wired_entry)(unsigned long entrylo0, unsigned long entrylo1,
unsigned long entryhi, unsigned long pagemask);
int (*user_mode)(struct pt_regs *);
asmlinkage void *(*resume)(void *last, void *next);
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);
__initfunc(void loadmmu(void))
{
switch(mips_cputype) {
case CPU_R2000:
case CPU_R3000:
case CPU_R3000A:
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:
case CPU_NEVADA:
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.");
}
}
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