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csky: Add show_tlb for CPU_CK860 debug

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Print all 1024 jtlb entries and 16 iutlb entries and 16 dutlb
entries in show_regs.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
This commit is contained in:
Guo Ren 2020-12-24 06:23:31 +00:00
parent 3b756ccddb
commit 1152cb5a9a
1 changed files with 121 additions and 0 deletions
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121
arch/csky/kernel/ptrace.c
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@ -22,6 +22,7 @@
#include <asm/asm-offsets.h>
#include <abi/regdef.h>
#include <abi/ckmmu.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
@ -343,6 +344,124 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs)
trace_sys_exit(regs, syscall_get_return_value(current, regs));
}
#ifdef CONFIG_CPU_CK860
static void show_iutlb(void)
{
int entry, i;
unsigned long flags;
unsigned long oldpid;
unsigned long entryhi[16], entrylo0[16], entrylo1[16];
oldpid = read_mmu_entryhi();
entry = 0x8000;
local_irq_save(flags);
for (i = 0; i < 16; i++) {
write_mmu_index(entry);
tlb_read();
entryhi[i] = read_mmu_entryhi();
entrylo0[i] = read_mmu_entrylo0();
entrylo1[i] = read_mmu_entrylo1();
entry++;
}
local_irq_restore(flags);
write_mmu_entryhi(oldpid);
printk("\n\n\n");
for (i = 0; i < 16; i++)
printk("iutlb[%d]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
" entrylo1 - 0x%lx\n",
i, entryhi[i], entrylo0[i], entrylo1[i]);
printk("\n\n\n");
}
static void show_dutlb(void)
{
int entry, i;
unsigned long flags;
unsigned long oldpid;
unsigned long entryhi[16], entrylo0[16], entrylo1[16];
oldpid = read_mmu_entryhi();
entry = 0x4000;
local_irq_save(flags);
for (i = 0; i < 16; i++) {
write_mmu_index(entry);
tlb_read();
entryhi[i] = read_mmu_entryhi();
entrylo0[i] = read_mmu_entrylo0();
entrylo1[i] = read_mmu_entrylo1();
entry++;
}
local_irq_restore(flags);
write_mmu_entryhi(oldpid);
printk("\n\n\n");
for (i = 0; i < 16; i++)
printk("dutlb[%d]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
" entrylo1 - 0x%lx\n",
i, entryhi[i], entrylo0[i], entrylo1[i]);
printk("\n\n\n");
}
static unsigned long entryhi[1024], entrylo0[1024], entrylo1[1024];
static void show_jtlb(void)
{
int entry;
unsigned long flags;
unsigned long oldpid;
oldpid = read_mmu_entryhi();
entry = 0;
local_irq_save(flags);
while (entry < 1024) {
write_mmu_index(entry);
tlb_read();
entryhi[entry] = read_mmu_entryhi();
entrylo0[entry] = read_mmu_entrylo0();
entrylo1[entry] = read_mmu_entrylo1();
entry++;
}
local_irq_restore(flags);
write_mmu_entryhi(oldpid);
printk("\n\n\n");
for (entry = 0; entry < 1024; entry++)
printk("jtlb[%x]: entryhi - 0x%lx; entrylo0 - 0x%lx;"
" entrylo1 - 0x%lx\n",
entry, entryhi[entry], entrylo0[entry], entrylo1[entry]);
printk("\n\n\n");
}
static void show_tlb(void)
{
show_iutlb();
show_dutlb();
show_jtlb();
}
#else
static void show_tlb(void)
{
return;
}
#endif
void show_regs(struct pt_regs *fp)
{
pr_info("\nCURRENT PROCESS:\n\n");
@ -396,5 +515,7 @@ void show_regs(struct pt_regs *fp)
fp->regs[8], fp->regs[9]);
#endif
show_tlb();
return;
}