Release 4.14 arch/mips/lib/r3k_dump_tlb.c

// SPDX-License-Identifier: GPL-2.0
/*
 * 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/mmu_context.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbdebug.h>

extern int r3k_have_wired_reg;



void dump_tlb_regs(void)
{
	pr_info("Index    : %0x\n", read_c0_index());
	pr_info("EntryHi  : %0lx\n", read_c0_entryhi());
	pr_info("EntryLo  : %0lx\n", read_c0_entrylo0());
	if (r3k_have_wired_reg)
		pr_info("Wired    : %0x\n", read_c0_wired());
}

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1
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static void dump_tlb(int first, int last)
{
	int	i;
	unsigned int asid;
	unsigned long entryhi, entrylo0, asid_mask;

	asid_mask = cpu_asid_mask(&current_cpu_data);
	asid = read_c0_entryhi() & asid_mask;

	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 & PAGE_MASK) != KSEG0 &&
		    (entrylo0 & R3K_ENTRYLO_G ||
		     (entryhi & asid_mask) == asid)) {
			/*
                         * Only print entries in use
                         */
			printk("Index: %2d ", i);

			pr_cont("va=%08lx asid=%08lx"
				"  [pa=%06lx n=%d d=%d v=%d g=%d]",
				entryhi & PAGE_MASK,
				entryhi & asid_mask,
				entrylo0 & PAGE_MASK,
				(entrylo0 & R3K_ENTRYLO_N) ? 1 : 0,
				(entrylo0 & R3K_ENTRYLO_D) ? 1 : 0,
				(entrylo0 & R3K_ENTRYLO_V) ? 1 : 0,
				(entrylo0 & R3K_ENTRYLO_G) ? 1 : 0);
		}
	}
	printk("\n");

	write_c0_entryhi(asid);
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
140
77.78%
3
25.00%
Paul Burton
13
7.22%
1
8.33%
James Hogan
11
6.11%
3
25.00%
Ralf Bächle
7
3.89%
1
8.33%
David Daney
4
2.22%
1
8.33%
Isamu Mogi
3
1.67%
1
8.33%
Andrew Morton
1
0.56%
1
8.33%
Atsushi Nemoto
1
0.56%
1
8.33%
Total
180
100.00%
12
100.00%



void dump_tlb_all(void)
{
	dump_tlb(0, current_cpu_data.tlbsize - 1);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
14
77.78%
1
33.33%
Ralf Bächle
3
16.67%
1
33.33%
Andrew Morton
1
5.56%
1
33.33%
Total
18
100.00%
3
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
170
63.43%
3
20.00%
James Hogan
58
21.64%
4
26.67%
Paul Burton
13
4.85%
1
6.67%
Ralf Bächle
10
3.73%
1
6.67%
Isamu Mogi
6
2.24%
1
6.67%
Atsushi Nemoto
4
1.49%
2
13.33%
David Daney
4
1.49%
1
6.67%
Andrew Morton
2
0.75%
1
6.67%
Greg Kroah-Hartman
1
0.37%
1
6.67%
Total
268
100.00%
15
100.00%
Directory: arch/mips/lib

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