diff options
Diffstat (limited to 'arch/mips/lib')
| -rw-r--r-- | arch/mips/lib/Makefile | 19 | ||||
| -rw-r--r-- | arch/mips/lib/dump_tlb.c | 100 | ||||
| -rw-r--r-- | arch/mips/lib/r3k_dump_tlb.c | 62 |
3 files changed, 181 insertions, 0 deletions
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 1c1aa9f..91ed1eb 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 \ obj-y += iomap.o obj-$(CONFIG_PCI) += iomap-pci.o +obj-$(CONFIG_CPU_LOONGSON2) += dump_tlb.o +obj-$(CONFIG_CPU_MIPS32) += dump_tlb.o +obj-$(CONFIG_CPU_MIPS64) += dump_tlb.o +obj-$(CONFIG_CPU_NEVADA) += dump_tlb.o +obj-$(CONFIG_CPU_R10000) += dump_tlb.o +obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o +obj-$(CONFIG_CPU_R4300) += dump_tlb.o +obj-$(CONFIG_CPU_R4X00) += dump_tlb.o +obj-$(CONFIG_CPU_R5000) += dump_tlb.o +obj-$(CONFIG_CPU_R5432) += dump_tlb.o +obj-$(CONFIG_CPU_R6000) += +obj-$(CONFIG_CPU_R8000) += +obj-$(CONFIG_CPU_RM7000) += dump_tlb.o +obj-$(CONFIG_CPU_RM9000) += dump_tlb.o +obj-$(CONFIG_CPU_SB1) += dump_tlb.o +obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o +obj-$(CONFIG_CPU_TX49XX) += dump_tlb.o +obj-$(CONFIG_CPU_VR41XX) += dump_tlb.o + # libgcc-style stuff needed in the kernel obj-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 0000000..1a4db7d --- /dev/null +++ b/arch/mips/lib/dump_tlb.c @@ -0,0 +1,100 @@ +/* + * Dump R4x00 TLB for debugging purposes. + * + * Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle. + * Copyright (C) 1999 by Silicon Graphics, Inc. + */ +#include <linux/kernel.h> +#include <linux/mm.h> + +#include <asm/mipsregs.h> +#include <asm/page.h> +#include <asm/pgtable.h> + +static inline const char *msk2str(unsigned int mask) +{ + switch (mask) { + case PM_4K: return "4kb"; + case PM_16K: return "16kb"; + case PM_64K: return "64kb"; + case PM_256K: return "256kb"; +#ifndef CONFIG_CPU_VR41XX + case PM_1M: return "1Mb"; + case PM_4M: return "4Mb"; + case PM_16M: return "16Mb"; + case PM_64M: return "64Mb"; + case PM_256M: return "256Mb"; +#endif + } + return ""; +} + +#define BARRIER() \ + __asm__ __volatile__( \ + ".set\tnoreorder\n\t" \ + "nop;nop;nop;nop;nop;nop;nop\n\t" \ + ".set\treorder"); + +static void dump_tlb(int first, int last) +{ + unsigned long s_entryhi, entryhi, asid; + unsigned long long entrylo0, entrylo1; + unsigned int s_index, pagemask, c0, c1, i; + + s_entryhi = read_c0_entryhi(); + s_index = read_c0_index(); + asid = s_entryhi & 0xff; + + for (i = first; i <= last; i++) { + write_c0_index(i); + BARRIER(); + tlb_read(); + BARRIER(); + pagemask = read_c0_pagemask(); + entryhi = read_c0_entryhi(); + entrylo0 = read_c0_entrylo0(); + entrylo1 = read_c0_entrylo1(); + + /* Unused entries have a virtual address of CKSEG0. */ + if ((entryhi & ~0x1ffffUL) != CKSEG0 + && (entryhi & 0xff) == asid) { +#ifdef CONFIG_32BIT + int width = 8; +#else + int width = 11; +#endif + /* + * Only print entries in use + */ + printk("Index: %2d pgmask=%s ", i, msk2str(pagemask)); + + c0 = (entrylo0 >> 3) & 7; + c1 = (entrylo1 >> 3) & 7; + + printk("va=%0*lx asid=%02lx\n", + width, (entryhi & ~0x1fffUL), + entryhi & 0xff); + printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ", + width, + (entrylo0 << 6) & PAGE_MASK, c0, + (entrylo0 & 4) ? 1 : 0, + (entrylo0 & 2) ? 1 : 0, + (entrylo0 & 1) ? 1 : 0); + printk("[pa=%0*llx c=%d d=%d v=%d g=%d]\n", + width, + (entrylo1 << 6) & PAGE_MASK, c1, + (entrylo1 & 4) ? 1 : 0, + (entrylo1 & 2) ? 1 : 0, + (entrylo1 & 1) ? 1 : 0); + } + } + printk("\n"); + + write_c0_entryhi(s_entryhi); + write_c0_index(s_index); +} + +void dump_tlb_all(void) +{ + dump_tlb(0, current_cpu_data.tlbsize - 1); +} diff --git a/arch/mips/lib/r3k_dump_tlb.c b/arch/mips/lib/r3k_dump_tlb.c new file mode 100644 index 0000000..52f8779 --- /dev/null +++ b/arch/mips/lib/r3k_dump_tlb.c @@ -0,0 +1,62 @@ +/* + * 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> + +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); +} |