MIPS: dump_tlb: Take XPA into account
XPA extends the physical addresses on MIPS32, including the EntryLo
registers. Update dump_tlb() to concatenate the PFNX field from the high
end of the EntryLo registers (as read by mfhc0).
The width of physical and virtual addresses are also separated to show
only 8 nibbles of virtual but 11 nibbles of physical with XPA.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10077/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 1fefd38..167f3563 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -47,9 +47,13 @@
unsigned long long entrylo0, entrylo1, pa;
unsigned int s_index, s_pagemask, pagemask, c0, c1, i;
#ifdef CONFIG_32BIT
- int width = 8;
+ bool xpa = cpu_has_xpa && (read_c0_pagegrain() & PG_ELPA);
+ int pwidth = xpa ? 11 : 8;
+ int vwidth = 8;
#else
- int width = 11;
+ bool xpa = false;
+ int pwidth = 11;
+ int vwidth = 11;
#endif
s_pagemask = read_c0_pagemask();
@@ -96,10 +100,12 @@
c1 = (entrylo1 & MIPS_ENTRYLO_C) >> MIPS_ENTRYLO_C_SHIFT;
printk("va=%0*lx asid=%02lx\n",
- width, (entryhi & ~0x1fffUL),
+ vwidth, (entryhi & ~0x1fffUL),
entryhi & 0xff);
/* RI/XI are in awkward places, so mask them off separately */
pa = entrylo0 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
+ if (xpa)
+ pa |= (unsigned long long)readx_c0_entrylo0() << 30;
pa = (pa << 6) & PAGE_MASK;
printk("\t[");
if (cpu_has_rixi)
@@ -107,19 +113,21 @@
(entrylo0 & MIPS_ENTRYLO_RI) ? 1 : 0,
(entrylo0 & MIPS_ENTRYLO_XI) ? 1 : 0);
printk("pa=%0*llx c=%d d=%d v=%d g=%d] [",
- width, pa, c0,
+ pwidth, pa, c0,
(entrylo0 & MIPS_ENTRYLO_D) ? 1 : 0,
(entrylo0 & MIPS_ENTRYLO_V) ? 1 : 0,
(entrylo0 & MIPS_ENTRYLO_G) ? 1 : 0);
/* RI/XI are in awkward places, so mask them off separately */
pa = entrylo1 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
+ if (xpa)
+ pa |= (unsigned long long)readx_c0_entrylo1() << 30;
pa = (pa << 6) & PAGE_MASK;
if (cpu_has_rixi)
printk("ri=%d xi=%d ",
(entrylo1 & MIPS_ENTRYLO_RI) ? 1 : 0,
(entrylo1 & MIPS_ENTRYLO_XI) ? 1 : 0);
printk("pa=%0*llx c=%d d=%d v=%d g=%d]\n",
- width, pa, c1,
+ pwidth, pa, c1,
(entrylo1 & MIPS_ENTRYLO_D) ? 1 : 0,
(entrylo1 & MIPS_ENTRYLO_V) ? 1 : 0,
(entrylo1 & MIPS_ENTRYLO_G) ? 1 : 0);