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authorRalf Baechle <ralf@linux-mips.org>1998-08-25 09:12:35 +0000
committerRalf Baechle <ralf@linux-mips.org>1998-08-25 09:12:35 +0000
commitc7fc24dc4420057f103afe8fc64524ebc25c5d37 (patch)
tree3682407a599b8f9f03fc096298134cafba1c9b2f /arch/ppc/mm/fault.c
parent1d793fade8b063fde3cf275bf1a5c2d381292cd9 (diff)
o Merge with Linux 2.1.116.
o New Newport console code. o New G364 console code.
Diffstat (limited to 'arch/ppc/mm/fault.c')
-rw-r--r--arch/ppc/mm/fault.c45
1 files changed, 16 insertions, 29 deletions
diff --git a/arch/ppc/mm/fault.c b/arch/ppc/mm/fault.c
index 9d0914979..2f30b6d99 100644
--- a/arch/ppc/mm/fault.c
+++ b/arch/ppc/mm/fault.c
@@ -62,13 +62,13 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
struct vm_area_struct * vma;
struct mm_struct *mm = current->mm;
- /*printk("address: %08lx code: %08lx %s%s%s%s%s%s\n",
- address,error_code,
+ /*printk("address: %08lx nip:%08lx code: %08lx %s%s%s%s%s%s\n",
+ address,regs->nip,error_code,
(error_code&0x40000000)?"604 tlb&htab miss ":"",
(error_code&0x20000000)?"603 tlbmiss ":"",
(error_code&0x02000000)?"write ":"",
(error_code&0x08000000)?"prot ":"",
- (error_code&0x95700000)?"I/O ":"",
+ (error_code&0x80000000)?"I/O ":"",
(regs->trap == 0x400)?"instr":"data"
);*/
@@ -161,32 +161,6 @@ void
bad_page_fault(struct pt_regs *regs, unsigned long address)
{
unsigned long fixup;
-#if 0
- extern unsigned long video_mem_base;
- extern unsigned long video_mem_term;
-
- /*
- * Remap video IO areas for buggy X servers.
- * The S3 server wants direct access to video memory
- * at 0x8000 0000 and 0xc000 0000 on prep systems, but
- * we don't allow that AND we remap the io areas so it's not
- * even there!
- * So, for this task only give a virtual=physical mapping of the
- * video mem.
- * -- Cort
- */
- if ( is_prep && user_mode(regs) )
- {
- printk("%s/%d: fault on %x\n",
- current->comm,current->pid,address);
- printk("mapping: %x -> %x\n",
- address&PAGE_MASK, address&PAGE_MASK);
- map_page(current,address&PAGE_MASK,address&PAGE_MASK,
- _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_RW | _PAGE_DIRTY | _PAGE_HWWRITE|_PAGE_NO_CACHE|_PAGE_WRITETHRU);
- return;
- }
-#endif
-
if (user_mode(regs)) {
force_sig(SIGSEGV, current);
return;
@@ -209,6 +183,7 @@ bad_page_fault(struct pt_regs *regs, unsigned long address)
regs->nip,regs->link,address,current->comm,current->pid);
}
+#ifdef CONFIG_8xx
/*
* I need a va to pte function for the MPC8xx so I can set the cache
* attributes on individual pages used by the Communication Processor
@@ -286,6 +261,17 @@ print_8xx_pte(struct mm_struct *mm, unsigned long addr)
if (pte) {
printk(" (0x%08lx)->(0x%08lx)->0x%08lx\n",
(long)pgd, (long)pte, (long)pte_val(*pte));
+#define pp ((long)pte_val(*pte))
+ printk(" RPN: %05x PP: %x SPS: %x SH: %x "
+ "CI: %x v: %x\n",
+ pp>>12, /* rpn */
+ (pp>>10)&3, /* pp */
+ (pp>>3)&1, /* small */
+ (pp>>2)&1, /* shared */
+ (pp>>1)&1, /* cache inhibit */
+ pp&1 /* valid */
+ );
+#undef pp
}
else {
printk("no pte\n");
@@ -320,6 +306,7 @@ get_8xx_pte(struct mm_struct *mm, unsigned long addr)
}
return(retval);
}
+#endif /* CONFIG_8xx */
#if 0
/*