mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
48c4ac976a
This reverts commit d532f3d267.
The original commit has several problems:
1) Doesn't work with 64-bit kernels.
2) Calls TLBMISS_HANDLER_SETUP() before the code is generated.
3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when
only one call is needed.
[ralf@linux-mips.org: Also revert the bits of the ASID patch which were
hidden in the KVM merge.]
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5242/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
|
|
* Dump R3000 TLB for debugging purposes.
|
|
*
|
|
* Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle.
|
|
* Copyright (C) 1999 by Silicon Graphics, Inc.
|
|
* Copyright (C) 1999 by Harald Koerfgen
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/tlbdebug.h>
|
|
|
|
extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */
|
|
|
|
static void dump_tlb(int first, int last)
|
|
{
|
|
int i;
|
|
unsigned int asid;
|
|
unsigned long entryhi, entrylo0;
|
|
|
|
asid = read_c0_entryhi() & 0xfc0;
|
|
|
|
for (i = first; i <= last; i++) {
|
|
write_c0_index(i<<8);
|
|
__asm__ __volatile__(
|
|
".set\tnoreorder\n\t"
|
|
"tlbr\n\t"
|
|
"nop\n\t"
|
|
".set\treorder");
|
|
entryhi = read_c0_entryhi();
|
|
entrylo0 = read_c0_entrylo0();
|
|
|
|
/* Unused entries have a virtual address of KSEG0. */
|
|
if ((entryhi & 0xffffe000) != 0x80000000
|
|
&& (entryhi & 0xfc0) == asid) {
|
|
/*
|
|
* Only print entries in use
|
|
*/
|
|
printk("Index: %2d ", i);
|
|
|
|
printk("va=%08lx asid=%08lx"
|
|
" [pa=%06lx n=%d d=%d v=%d g=%d]",
|
|
(entryhi & 0xffffe000),
|
|
entryhi & 0xfc0,
|
|
entrylo0 & PAGE_MASK,
|
|
(entrylo0 & (1 << 11)) ? 1 : 0,
|
|
(entrylo0 & (1 << 10)) ? 1 : 0,
|
|
(entrylo0 & (1 << 9)) ? 1 : 0,
|
|
(entrylo0 & (1 << 8)) ? 1 : 0);
|
|
}
|
|
}
|
|
printk("\n");
|
|
|
|
write_c0_entryhi(asid);
|
|
}
|
|
|
|
void dump_tlb_all(void)
|
|
{
|
|
dump_tlb(0, current_cpu_data.tlbsize - 1);
|
|
}
|