--- zzzz-none-000/linux-3.10.107/arch/mips/lib/r3k_dump_tlb.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/lib/r3k_dump_tlb.c	2021-02-04 17:41:59.000000000 +0000
@@ -9,11 +9,21 @@
 #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;	/* defined in tlb-r3k.c */
+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());
+}
 
 static void dump_tlb(int first, int last)
 {
@@ -21,7 +31,7 @@
 	unsigned int asid;
 	unsigned long entryhi, entrylo0;
 
-	asid = read_c0_entryhi() & 0xfc0;
+	asid = read_c0_entryhi() & ASID_MASK;
 
 	for (i = first; i <= last; i++) {
 		write_c0_index(i<<8);
@@ -34,8 +44,9 @@
 		entrylo0 = read_c0_entrylo0();
 
 		/* Unused entries have a virtual address of KSEG0.  */
-		if ((entryhi & 0xffffe000) != 0x80000000
-		    && (entryhi & 0xfc0) == asid) {
+		if ((entryhi & PAGE_MASK) != KSEG0 &&
+		    (entrylo0 & R3K_ENTRYLO_G ||
+		     (entryhi & ASID_MASK) == asid)) {
 			/*
 			 * Only print entries in use
 			 */
@@ -43,13 +54,13 @@
 
 			printk("va=%08lx asid=%08lx"
 			       "  [pa=%06lx n=%d d=%d v=%d g=%d]",
-			       (entryhi & 0xffffe000),
-			       entryhi & 0xfc0,
+			       entryhi & PAGE_MASK,
+			       entryhi & ASID_MASK,
 			       entrylo0 & PAGE_MASK,
-			       (entrylo0 & (1 << 11)) ? 1 : 0,
-			       (entrylo0 & (1 << 10)) ? 1 : 0,
-			       (entrylo0 & (1 << 9)) ? 1 : 0,
-			       (entrylo0 & (1 << 8)) ? 1 : 0);
+			       (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");