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-rw-r--r--arch/mips/lib/Makefile21
-rw-r--r--arch/mips/lib/dump_tlb.c101
-rw-r--r--arch/mips/lib/r3k_dump_tlb.c63
-rw-r--r--arch/mips/lib/ucmpdi2.c2
-rw-r--r--arch/mips/lib/uncached.c1
5 files changed, 186 insertions, 2 deletions
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index 5dad13efba7e..91ed1eb33102 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -8,5 +8,24 @@ lib-y += csum_partial.o memcpy.o memcpy-inatomic.o memset.o strlen_user.o \
8obj-y += iomap.o 8obj-y += iomap.o
9obj-$(CONFIG_PCI) += iomap-pci.o 9obj-$(CONFIG_PCI) += iomap-pci.o
10 10
11obj-$(CONFIG_CPU_LOONGSON2) += dump_tlb.o
12obj-$(CONFIG_CPU_MIPS32) += dump_tlb.o
13obj-$(CONFIG_CPU_MIPS64) += dump_tlb.o
14obj-$(CONFIG_CPU_NEVADA) += dump_tlb.o
15obj-$(CONFIG_CPU_R10000) += dump_tlb.o
16obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o
17obj-$(CONFIG_CPU_R4300) += dump_tlb.o
18obj-$(CONFIG_CPU_R4X00) += dump_tlb.o
19obj-$(CONFIG_CPU_R5000) += dump_tlb.o
20obj-$(CONFIG_CPU_R5432) += dump_tlb.o
21obj-$(CONFIG_CPU_R6000) +=
22obj-$(CONFIG_CPU_R8000) +=
23obj-$(CONFIG_CPU_RM7000) += dump_tlb.o
24obj-$(CONFIG_CPU_RM9000) += dump_tlb.o
25obj-$(CONFIG_CPU_SB1) += dump_tlb.o
26obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o
27obj-$(CONFIG_CPU_TX49XX) += dump_tlb.o
28obj-$(CONFIG_CPU_VR41XX) += dump_tlb.o
29
11# libgcc-style stuff needed in the kernel 30# libgcc-style stuff needed in the kernel
12lib-y += ashldi3.o ashrdi3.o lshrdi3.o ucmpdi2.o 31obj-y += ashldi3.o ashrdi3.o lshrdi3.o ucmpdi2.o
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
new file mode 100644
index 000000000000..465ff0ec85b9
--- /dev/null
+++ b/arch/mips/lib/dump_tlb.c
@@ -0,0 +1,101 @@
1/*
2 * Dump R4x00 TLB for debugging purposes.
3 *
4 * Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle.
5 * Copyright (C) 1999 by Silicon Graphics, Inc.
6 */
7#include <linux/kernel.h>
8#include <linux/mm.h>
9
10#include <asm/mipsregs.h>
11#include <asm/page.h>
12#include <asm/pgtable.h>
13#include <asm/tlbdebug.h>
14
15static inline const char *msk2str(unsigned int mask)
16{
17 switch (mask) {
18 case PM_4K: return "4kb";
19 case PM_16K: return "16kb";
20 case PM_64K: return "64kb";
21 case PM_256K: return "256kb";
22#ifndef CONFIG_CPU_VR41XX
23 case PM_1M: return "1Mb";
24 case PM_4M: return "4Mb";
25 case PM_16M: return "16Mb";
26 case PM_64M: return "64Mb";
27 case PM_256M: return "256Mb";
28#endif
29 }
30 return "";
31}
32
33#define BARRIER() \
34 __asm__ __volatile__( \
35 ".set\tnoreorder\n\t" \
36 "nop;nop;nop;nop;nop;nop;nop\n\t" \
37 ".set\treorder");
38
39static void dump_tlb(int first, int last)
40{
41 unsigned long s_entryhi, entryhi, asid;
42 unsigned long long entrylo0, entrylo1;
43 unsigned int s_index, pagemask, c0, c1, i;
44
45 s_entryhi = read_c0_entryhi();
46 s_index = read_c0_index();
47 asid = s_entryhi & 0xff;
48
49 for (i = first; i <= last; i++) {
50 write_c0_index(i);
51 BARRIER();
52 tlb_read();
53 BARRIER();
54 pagemask = read_c0_pagemask();
55 entryhi = read_c0_entryhi();
56 entrylo0 = read_c0_entrylo0();
57 entrylo1 = read_c0_entrylo1();
58
59 /* Unused entries have a virtual address of CKSEG0. */
60 if ((entryhi & ~0x1ffffUL) != CKSEG0
61 && (entryhi & 0xff) == asid) {
62#ifdef CONFIG_32BIT
63 int width = 8;
64#else
65 int width = 11;
66#endif
67 /*
68 * Only print entries in use
69 */
70 printk("Index: %2d pgmask=%s ", i, msk2str(pagemask));
71
72 c0 = (entrylo0 >> 3) & 7;
73 c1 = (entrylo1 >> 3) & 7;
74
75 printk("va=%0*lx asid=%02lx\n",
76 width, (entryhi & ~0x1fffUL),
77 entryhi & 0xff);
78 printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ",
79 width,
80 (entrylo0 << 6) & PAGE_MASK, c0,
81 (entrylo0 & 4) ? 1 : 0,
82 (entrylo0 & 2) ? 1 : 0,
83 (entrylo0 & 1) ? 1 : 0);
84 printk("[pa=%0*llx c=%d d=%d v=%d g=%d]\n",
85 width,
86 (entrylo1 << 6) & PAGE_MASK, c1,
87 (entrylo1 & 4) ? 1 : 0,
88 (entrylo1 & 2) ? 1 : 0,
89 (entrylo1 & 1) ? 1 : 0);
90 }
91 }
92 printk("\n");
93
94 write_c0_entryhi(s_entryhi);
95 write_c0_index(s_index);
96}
97
98void dump_tlb_all(void)
99{
100 dump_tlb(0, current_cpu_data.tlbsize - 1);
101}
diff --git a/arch/mips/lib/r3k_dump_tlb.c b/arch/mips/lib/r3k_dump_tlb.c
new file mode 100644
index 000000000000..9cee907975ae
--- /dev/null
+++ b/arch/mips/lib/r3k_dump_tlb.c
@@ -0,0 +1,63 @@
1/*
2 * Dump R3000 TLB for debugging purposes.
3 *
4 * Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle.
5 * Copyright (C) 1999 by Silicon Graphics, Inc.
6 * Copyright (C) 1999 by Harald Koerfgen
7 */
8#include <linux/kernel.h>
9#include <linux/mm.h>
10
11#include <asm/mipsregs.h>
12#include <asm/page.h>
13#include <asm/pgtable.h>
14#include <asm/tlbdebug.h>
15
16extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */
17
18static void dump_tlb(int first, int last)
19{
20 int i;
21 unsigned int asid;
22 unsigned long entryhi, entrylo0;
23
24 asid = read_c0_entryhi() & 0xfc0;
25
26 for (i = first; i <= last; i++) {
27 write_c0_index(i<<8);
28 __asm__ __volatile__(
29 ".set\tnoreorder\n\t"
30 "tlbr\n\t"
31 "nop\n\t"
32 ".set\treorder");
33 entryhi = read_c0_entryhi();
34 entrylo0 = read_c0_entrylo0();
35
36 /* Unused entries have a virtual address of KSEG0. */
37 if ((entryhi & 0xffffe000) != 0x80000000
38 && (entryhi & 0xfc0) == asid) {
39 /*
40 * Only print entries in use
41 */
42 printk("Index: %2d ", i);
43
44 printk("va=%08lx asid=%08lx"
45 " [pa=%06lx n=%d d=%d v=%d g=%d]",
46 (entryhi & 0xffffe000),
47 entryhi & 0xfc0,
48 entrylo0 & PAGE_MASK,
49 (entrylo0 & (1 << 11)) ? 1 : 0,
50 (entrylo0 & (1 << 10)) ? 1 : 0,
51 (entrylo0 & (1 << 9)) ? 1 : 0,
52 (entrylo0 & (1 << 8)) ? 1 : 0);
53 }
54 }
55 printk("\n");
56
57 write_c0_entryhi(asid);
58}
59
60void dump_tlb_all(void)
61{
62 dump_tlb(0, current_cpu_data.tlbsize - 1);
63}
diff --git a/arch/mips/lib/ucmpdi2.c b/arch/mips/lib/ucmpdi2.c
index e9ff258ef028..e2ff6072b5a3 100644
--- a/arch/mips/lib/ucmpdi2.c
+++ b/arch/mips/lib/ucmpdi2.c
@@ -2,7 +2,7 @@
2 2
3#include "libgcc.h" 3#include "libgcc.h"
4 4
5word_type __ucmpdi2 (unsigned long a, unsigned long b) 5word_type __ucmpdi2 (unsigned long long a, unsigned long long b)
6{ 6{
7 const DWunion au = {.ll = a}; 7 const DWunion au = {.ll = a};
8 const DWunion bu = {.ll = b}; 8 const DWunion bu = {.ll = b};
diff --git a/arch/mips/lib/uncached.c b/arch/mips/lib/uncached.c
index 2388f7f3ffde..58d14f4d9349 100644
--- a/arch/mips/lib/uncached.c
+++ b/arch/mips/lib/uncached.c
@@ -12,6 +12,7 @@
12 12
13#include <asm/addrspace.h> 13#include <asm/addrspace.h>
14#include <asm/bug.h> 14#include <asm/bug.h>
15#include <asm/cacheflush.h>
15 16
16#ifndef CKSEG2 17#ifndef CKSEG2
17#define CKSEG2 CKSSEG 18#define CKSEG2 CKSSEG
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-21 04:47:06 -0400