MIPS: Add 64-bit HTW fields

Add field definitions for some of the 64-bit specific Hardware page
Table Walker (HTW) register fields in PWSize and PWCtl, in preparation
for fixing the 64-bit HTW configuration.

Also print these fields out along with the others in print_htw_config().

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13363/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 3a062ae..e1ca65c 100644 (file)
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -729,6 +729,8 @@
 #define MIPS_PWFIELD_PTEI_SHIFT        0
 #define MIPS_PWFIELD_PTEI_MASK 0x0000003f
 
+#define MIPS_PWSIZE_PS_SHIFT   30
+#define MIPS_PWSIZE_PS_MASK    0x40000000
 #define MIPS_PWSIZE_GDW_SHIFT  24
 #define MIPS_PWSIZE_GDW_MASK   0x3f000000
 #define MIPS_PWSIZE_UDW_SHIFT  18
@@ -742,6 +744,12 @@
 
 #define MIPS_PWCTL_PWEN_SHIFT  31
 #define MIPS_PWCTL_PWEN_MASK   0x80000000
+#define MIPS_PWCTL_XK_SHIFT    28
+#define MIPS_PWCTL_XK_MASK     0x10000000
+#define MIPS_PWCTL_XS_SHIFT    27
+#define MIPS_PWCTL_XS_MASK     0x08000000
+#define MIPS_PWCTL_XU_SHIFT    26
+#define MIPS_PWCTL_XU_MASK     0x04000000
 #define MIPS_PWCTL_DPH_SHIFT   7
 #define MIPS_PWCTL_DPH_MASK    0x00000080
 #define MIPS_PWCTL_HUGEPG_SHIFT        6

diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 274da90..c363890 100644 (file)
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -2361,8 +2361,9 @@ static void print_htw_config(void)
                (config & MIPS_PWFIELD_PTEI_MASK) >> MIPS_PWFIELD_PTEI_SHIFT);
 
        config = read_c0_pwsize();
-       pr_debug("PWSize  (0x%0*lx): GDW: 0x%02lx  UDW: 0x%02lx  MDW: 0x%02lx  PTW: 0x%02lx  PTEW: 0x%02lx\n",
+       pr_debug("PWSize  (0x%0*lx): PS: 0x%lx  GDW: 0x%02lx  UDW: 0x%02lx  MDW: 0x%02lx  PTW: 0x%02lx  PTEW: 0x%02lx\n",
                field, config,
+               (config & MIPS_PWSIZE_PS_MASK) >> MIPS_PWSIZE_PS_SHIFT,
                (config & MIPS_PWSIZE_GDW_MASK) >> MIPS_PWSIZE_GDW_SHIFT,
                (config & MIPS_PWSIZE_UDW_MASK) >> MIPS_PWSIZE_UDW_SHIFT,
                (config & MIPS_PWSIZE_MDW_MASK) >> MIPS_PWSIZE_MDW_SHIFT,
@@ -2370,9 +2371,12 @@ static void print_htw_config(void)
                (config & MIPS_PWSIZE_PTEW_MASK) >> MIPS_PWSIZE_PTEW_SHIFT);
 
        pwctl = read_c0_pwctl();
-       pr_debug("PWCtl   (0x%x): PWEn: 0x%x  DPH: 0x%x  HugePg: 0x%x  Psn: 0x%x\n",
+       pr_debug("PWCtl   (0x%x): PWEn: 0x%x  XK: 0x%x  XS: 0x%x  XU: 0x%x  DPH: 0x%x  HugePg: 0x%x  Psn: 0x%x\n",
                pwctl,
                (pwctl & MIPS_PWCTL_PWEN_MASK) >> MIPS_PWCTL_PWEN_SHIFT,
+               (pwctl & MIPS_PWCTL_XK_MASK) >> MIPS_PWCTL_XK_SHIFT,
+               (pwctl & MIPS_PWCTL_XS_MASK) >> MIPS_PWCTL_XS_SHIFT,
+               (pwctl & MIPS_PWCTL_XU_MASK) >> MIPS_PWCTL_XU_SHIFT,
                (pwctl & MIPS_PWCTL_DPH_MASK) >> MIPS_PWCTL_DPH_SHIFT,
                (pwctl & MIPS_PWCTL_HUGEPG_MASK) >> MIPS_PWCTL_HUGEPG_SHIFT,
                (pwctl & MIPS_PWCTL_PSN_MASK) >> MIPS_PWCTL_PSN_SHIFT);