mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-04 17:44:14 +08:00
53a4858ccd
In addition to less visual clutter, this also makes Clang happy regarding the const-ness of arguments. In the original approach, all Clang gets to see is the incoming arguments whose const-ness cannot be proven without first being inlined; so Clang errors out here while GCC is fine. While at it, tweak several printk format strings because the return type of csr_read64 becomes effectively unsigned long, instead of unsigned long long. Signed-off-by: WANG Xuerui <git@xen0n.name> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
*
|
|
* Derived from MIPS:
|
|
* 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/loongarch.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/tlb.h>
|
|
|
|
void dump_tlb_regs(void)
|
|
{
|
|
const int field = 2 * sizeof(unsigned long);
|
|
|
|
pr_info("Index : 0x%0x\n", read_csr_tlbidx());
|
|
pr_info("PageSize : 0x%0x\n", read_csr_pagesize());
|
|
pr_info("EntryHi : 0x%0*lx\n", field, read_csr_entryhi());
|
|
pr_info("EntryLo0 : 0x%0*lx\n", field, read_csr_entrylo0());
|
|
pr_info("EntryLo1 : 0x%0*lx\n", field, read_csr_entrylo1());
|
|
}
|
|
|
|
static void dump_tlb(int first, int last)
|
|
{
|
|
unsigned long s_entryhi, entryhi, asid;
|
|
unsigned long long entrylo0, entrylo1, pa;
|
|
unsigned int index;
|
|
unsigned int s_index, s_asid;
|
|
unsigned int pagesize, c0, c1, i;
|
|
unsigned long asidmask = cpu_asid_mask(¤t_cpu_data);
|
|
int pwidth = 16;
|
|
int vwidth = 16;
|
|
int asidwidth = DIV_ROUND_UP(ilog2(asidmask) + 1, 4);
|
|
|
|
s_entryhi = read_csr_entryhi();
|
|
s_index = read_csr_tlbidx();
|
|
s_asid = read_csr_asid();
|
|
|
|
for (i = first; i <= last; i++) {
|
|
write_csr_index(i);
|
|
tlb_read();
|
|
pagesize = read_csr_pagesize();
|
|
entryhi = read_csr_entryhi();
|
|
entrylo0 = read_csr_entrylo0();
|
|
entrylo1 = read_csr_entrylo1();
|
|
index = read_csr_tlbidx();
|
|
asid = read_csr_asid();
|
|
|
|
/* EHINV bit marks entire entry as invalid */
|
|
if (index & CSR_TLBIDX_EHINV)
|
|
continue;
|
|
/*
|
|
* ASID takes effect in absence of G (global) bit.
|
|
*/
|
|
if (!((entrylo0 | entrylo1) & ENTRYLO_G) &&
|
|
asid != s_asid)
|
|
continue;
|
|
|
|
/*
|
|
* Only print entries in use
|
|
*/
|
|
pr_info("Index: %4d pgsize=0x%x ", i, (1 << pagesize));
|
|
|
|
c0 = (entrylo0 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
|
|
c1 = (entrylo1 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
|
|
|
|
pr_cont("va=0x%0*lx asid=0x%0*lx",
|
|
vwidth, (entryhi & ~0x1fffUL), asidwidth, asid & asidmask);
|
|
|
|
/* NR/NX are in awkward places, so mask them off separately */
|
|
pa = entrylo0 & ~(ENTRYLO_NR | ENTRYLO_NX);
|
|
pa = pa & PAGE_MASK;
|
|
pr_cont("\n\t[");
|
|
pr_cont("nr=%d nx=%d ",
|
|
(entrylo0 & ENTRYLO_NR) ? 1 : 0,
|
|
(entrylo0 & ENTRYLO_NX) ? 1 : 0);
|
|
pr_cont("pa=0x%0*llx c=%d d=%d v=%d g=%d plv=%lld] [",
|
|
pwidth, pa, c0,
|
|
(entrylo0 & ENTRYLO_D) ? 1 : 0,
|
|
(entrylo0 & ENTRYLO_V) ? 1 : 0,
|
|
(entrylo0 & ENTRYLO_G) ? 1 : 0,
|
|
(entrylo0 & ENTRYLO_PLV) >> ENTRYLO_PLV_SHIFT);
|
|
/* NR/NX are in awkward places, so mask them off separately */
|
|
pa = entrylo1 & ~(ENTRYLO_NR | ENTRYLO_NX);
|
|
pa = pa & PAGE_MASK;
|
|
pr_cont("nr=%d nx=%d ",
|
|
(entrylo1 & ENTRYLO_NR) ? 1 : 0,
|
|
(entrylo1 & ENTRYLO_NX) ? 1 : 0);
|
|
pr_cont("pa=0x%0*llx c=%d d=%d v=%d g=%d plv=%lld]\n",
|
|
pwidth, pa, c1,
|
|
(entrylo1 & ENTRYLO_D) ? 1 : 0,
|
|
(entrylo1 & ENTRYLO_V) ? 1 : 0,
|
|
(entrylo1 & ENTRYLO_G) ? 1 : 0,
|
|
(entrylo1 & ENTRYLO_PLV) >> ENTRYLO_PLV_SHIFT);
|
|
}
|
|
pr_info("\n");
|
|
|
|
write_csr_entryhi(s_entryhi);
|
|
write_csr_tlbidx(s_index);
|
|
write_csr_asid(s_asid);
|
|
}
|
|
|
|
void dump_tlb_all(void)
|
|
{
|
|
dump_tlb(0, current_cpu_data.tlbsize - 1);
|
|
}
|