From 23d06e4fb7138e29ef77edf2fa918acc20ad5f8d Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Thu, 13 Nov 2014 09:51:59 -0600 Subject: [PATCH] MIPS: Add CP0 macros for extended EntryLo registers Add read/write macros to access the upper bits of the extended EntryLo0 and EntryLo1 registers used by XPA. Signed-off-by: Steven J. Hill Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8455/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mipsregs.h | 40 ++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 7ebb6544392e..087b2af00150 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -653,6 +653,7 @@ #define MIPS_CONF5_NF (_ULCAST_(1) << 0) #define MIPS_CONF5_UFR (_ULCAST_(1) << 2) #define MIPS_CONF5_MRP (_ULCAST_(1) << 3) +#define MIPS_CONF5_MVH (_ULCAST_(1) << 5) #define MIPS_CONF5_FRE (_ULCAST_(1) << 8) #define MIPS_CONF5_UFE (_ULCAST_(1) << 9) #define MIPS_CONF5_MSAEN (_ULCAST_(1) << 27) @@ -995,6 +996,39 @@ do { \ local_irq_restore(__flags); \ } while (0) +#define __readx_32bit_c0_register(source) \ +({ \ + unsigned int __res; \ + \ + __asm__ __volatile__( \ + " .set push \n" \ + " .set noat \n" \ + " .set mips32r2 \n" \ + " .insn \n" \ + " # mfhc0 $1, %1 \n" \ + " .word (0x40410000 | ((%1 & 0x1f) << 11)) \n" \ + " move %0, $1 \n" \ + " .set pop \n" \ + : "=r" (__res) \ + : "i" (source)); \ + __res; \ +}) + +#define __writex_32bit_c0_register(register, value) \ +do { \ + __asm__ __volatile__( \ + " .set push \n" \ + " .set noat \n" \ + " .set mips32r2 \n" \ + " move $1, %0 \n" \ + " # mthc0 $1, %1 \n" \ + " .insn \n" \ + " .word (0x40c10000 | ((%1 & 0x1f) << 11)) \n" \ + " .set pop \n" \ + : \ + : "r" (value), "i" (register)); \ +} while (0) + #define read_c0_index() __read_32bit_c0_register($0, 0) #define write_c0_index(val) __write_32bit_c0_register($0, 0, val) @@ -1004,9 +1038,15 @@ do { \ #define read_c0_entrylo0() __read_ulong_c0_register($2, 0) #define write_c0_entrylo0(val) __write_ulong_c0_register($2, 0, val) +#define readx_c0_entrylo0() __readx_32bit_c0_register(2) +#define writex_c0_entrylo0(val) __writex_32bit_c0_register(2, val) + #define read_c0_entrylo1() __read_ulong_c0_register($3, 0) #define write_c0_entrylo1(val) __write_ulong_c0_register($3, 0, val) +#define readx_c0_entrylo1() __readx_32bit_c0_register(3) +#define writex_c0_entrylo1(val) __writex_32bit_c0_register(3, val) + #define read_c0_conf() __read_32bit_c0_register($3, 0) #define write_c0_conf(val) __write_32bit_c0_register($3, 0, val) -- 2.20.1