patch-2.1.97 linux/arch/sparc/mm/loadmmu.c

• Lines: 174
• Date: Tue Apr 14 17:44:20 1998
• Orig file: v2.1.96/linux/arch/sparc/mm/loadmmu.c
• Orig date: Mon Apr 14 16:28:08 1997

diff -u --recursive --new-file v2.1.96/linux/arch/sparc/mm/loadmmu.c linux/arch/sparc/mm/loadmmu.c
@@ -1,9 +1,10 @@
-/* $Id: loadmmu.c,v 1.46 1997/04/10 05:12:51 davem Exp $
+/* $Id: loadmmu.c,v 1.50 1998/02/05 14:19:02 jj Exp $
  * loadmmu.c:  This code loads up all the mm function pointers once the
  *             machine type has been determined.  It also sets the static
  *             mmu values such as PAGE_NONE, etc.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  */
 
 #include <linux/kernel.h>
@@ -16,6 +17,7 @@
 #include <asm/pgtable.h>
 #include <asm/a.out.h>
 #include <asm/mmu_context.h>
+#include <asm/oplib.h>
 
 unsigned long page_offset = 0xf0000000;
 unsigned long stack_top = 0xf0000000 - PAGE_SIZE;
@@ -24,132 +26,8 @@
 struct ctx_list ctx_free;
 struct ctx_list ctx_used;
 
-unsigned long (*alloc_kernel_stack)(struct task_struct *tsk);
-void (*free_kernel_stack)(unsigned long stack);
-struct task_struct *(*alloc_task_struct)(void);
-void (*free_task_struct)(struct task_struct *tsk);
-
-void (*quick_kernel_fault)(unsigned long);
-
-void (*init_new_context)(struct mm_struct *mm);
-void (*destroy_context)(struct mm_struct *mm);
-
-/* translate between physical and virtual addresses */
-unsigned long (*mmu_v2p)(unsigned long);
-unsigned long (*mmu_p2v)(unsigned long);
-
-char *(*mmu_lockarea)(char *, unsigned long);
-void  (*mmu_unlockarea)(char *, unsigned long);
-
-__u32 (*mmu_get_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
-void  (*mmu_get_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
-void  (*mmu_release_scsi_one)(__u32, unsigned long, struct linux_sbus *sbus);
-void  (*mmu_release_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
-
-void  (*mmu_map_dma_area)(unsigned long addr, int len);
-
-void (*update_mmu_cache)(struct vm_area_struct *vma, unsigned long address, pte_t pte);
-
-#ifdef __SMP__
-void (*local_flush_cache_all)(void);
-void (*local_flush_cache_mm)(struct mm_struct *);
-void (*local_flush_cache_range)(struct mm_struct *, unsigned long start,
-				unsigned long end);
-void (*local_flush_cache_page)(struct vm_area_struct *, unsigned long address);
-
-void (*local_flush_tlb_all)(void);
-void (*local_flush_tlb_mm)(struct mm_struct *);
-void (*local_flush_tlb_range)(struct mm_struct *, unsigned long start,
-			      unsigned long end);
-void (*local_flush_tlb_page)(struct vm_area_struct *, unsigned long address);
-void (*local_flush_page_to_ram)(unsigned long address);
-void (*local_flush_sig_insns)(struct mm_struct *mm, unsigned long insn_addr);
-#endif
-
-void (*flush_cache_all)(void);
-void (*flush_cache_mm)(struct mm_struct *);
-void (*flush_cache_range)(struct mm_struct *, unsigned long start,
-			  unsigned long end);
-void (*flush_cache_page)(struct vm_area_struct *, unsigned long address);
-
-void (*flush_tlb_all)(void);
-void (*flush_tlb_mm)(struct mm_struct *);
-void (*flush_tlb_range)(struct mm_struct *, unsigned long start,
-			unsigned long end);
-void (*flush_tlb_page)(struct vm_area_struct *, unsigned long address);
-
-void (*flush_page_to_ram)(unsigned long page);
-
-void (*flush_sig_insns)(struct mm_struct *mm, unsigned long insn_addr);
-
-void (*set_pte)(pte_t *pteptr, pte_t pteval);
-
-unsigned int pmd_shift, pmd_size, pmd_mask;
-unsigned int (*pmd_align)(unsigned int);
-unsigned int pgdir_shift, pgdir_size, pgdir_mask;
-unsigned int (*pgdir_align)(unsigned int);
-unsigned int ptrs_per_pte, ptrs_per_pmd, ptrs_per_pgd;
 unsigned int pg_iobits;
 
-pgprot_t page_none, page_shared, page_copy, page_readonly, page_kernel;
-
-unsigned long (*pte_page)(pte_t);
-unsigned long (*pmd_page)(pmd_t);
-unsigned long (*pgd_page)(pgd_t);
-
-void (*sparc_update_rootmmu_dir)(struct task_struct *, pgd_t *pgdir);
-unsigned long (*(vmalloc_start))(void);
-void (*switch_to_context)(struct task_struct *tsk);
-
-int (*pte_none)(pte_t);
-int (*pte_present)(pte_t);
-void (*pte_clear)(pte_t *);
-
-int (*pmd_none)(pmd_t);
-int (*pmd_bad)(pmd_t);
-int (*pmd_present)(pmd_t);
-void (*pmd_clear)(pmd_t *);
-
-int (*pgd_none)(pgd_t);
-int (*pgd_bad)(pgd_t);
-int (*pgd_present)(pgd_t);
-void (*pgd_clear)(pgd_t *);
-
-pte_t (*mk_pte)(unsigned long, pgprot_t);
-pte_t (*mk_pte_phys)(unsigned long, pgprot_t);
-pte_t (*mk_pte_io)(unsigned long, pgprot_t, int);
-void (*pgd_set)(pgd_t *, pmd_t *);
-pte_t (*pte_modify)(pte_t, pgprot_t);
-pgd_t * (*pgd_offset)(struct mm_struct *, unsigned long);
-pmd_t * (*pmd_offset)(pgd_t *, unsigned long);
-pte_t * (*pte_offset)(pmd_t *, unsigned long);
-void (*pte_free_kernel)(pte_t *);
-pte_t * (*pte_alloc_kernel)(pmd_t *, unsigned long);
-
-void (*pmd_free_kernel)(pmd_t *);
-pmd_t * (*pmd_alloc_kernel)(pgd_t *, unsigned long);
-void (*pte_free)(pte_t *);
-pte_t * (*pte_alloc)(pmd_t *, unsigned long);
-
-void (*pmd_free)(pmd_t *);
-pmd_t * (*pmd_alloc)(pgd_t *, unsigned long);
-void (*pgd_free)(pgd_t *);
-
-pgd_t * (*pgd_alloc)(void);
-
-int (*pte_write)(pte_t);
-int (*pte_dirty)(pte_t);
-int (*pte_young)(pte_t);
-
-pte_t (*pte_wrprotect)(pte_t);
-pte_t (*pte_mkclean)(pte_t);
-pte_t (*pte_mkold)(pte_t);
-pte_t (*pte_mkwrite)(pte_t);
-pte_t (*pte_mkdirty)(pte_t);
-pte_t (*pte_mkyoung)(pte_t);
-
-char *(*mmu_info)(void);
-
 extern void ld_mmu_sun4c(void);
 extern void ld_mmu_srmmu(void);
 
@@ -157,6 +35,7 @@
 {
 	switch(sparc_cpu_model) {
 	case sun4c:
+	case sun4:
 		ld_mmu_sun4c();
 		break;
 	case sun4m:
@@ -169,9 +48,8 @@
 		break;
 #endif
 	default:
-		printk("load_mmu:MMU support not available for this architecture\n");
-		printk("load_mmu:sparc_cpu_model = %d\n", (int) sparc_cpu_model);
-		printk("load_mmu:Halting...\n");
-		panic("load_mmu()");
+		prom_printf("load_mmu: %d unsupported\n", (int)sparc_cpu_model);
+		prom_halt();
 	}
+	btfixup();
 }