Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for MIPS:

   - a number of fixes that didn't make the 3.19 release.

   - a number of cleanups.

   - preliminary support for Cavium's Octeon 3 SOCs which feature up to
     48 MIPS64 R3 cores with FPU and hardware virtualization.

   - support for MIPS R6 processors.

     Revision 6 of the MIPS architecture is a major revision of the MIPS
     architecture which does away with many of original sins of the
     architecture such as branch delay slots.  This and other changes in
     R6 require major changes throughout the entire MIPS core
     architecture code and make up for the lion share of this pull
     request.

   - finally some preparatory work for eXtendend Physical Address
     support, which allows support of up to 40 bit of physical address
     space on 32 bit processors"

     [ Ahh, MIPS can't leave the PAE brain damage alone.  It's like
       every CPU architect has to make that mistake, but pee in the snow
       by changing the TLA.  But whether it's called PAE, LPAE or XPA,
       it's horrid crud   - Linus ]

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (114 commits)
  MIPS: sead3: Corrected get_c0_perfcount_int
  MIPS: mm: Remove dead macro definitions
  MIPS: OCTEON: irq: add CIB and other fixes
  MIPS: OCTEON: Don't do acknowledge operations for level triggered irqs.
  MIPS: OCTEON: More OCTEONIII support
  MIPS: OCTEON: Remove setting of processor specific CVMCTL icache bits.
  MIPS: OCTEON: Core-15169 Workaround and general CVMSEG cleanup.
  MIPS: OCTEON: Update octeon-model.h code for new SoCs.
  MIPS: OCTEON: Implement DCache errata workaround for all CN6XXX
  MIPS: OCTEON: Add little-endian support to asm/octeon/octeon.h
  MIPS: OCTEON: Implement the core-16057 workaround
  MIPS: OCTEON: Delete unused COP2 saving code
  MIPS: OCTEON: Use correct instruction to read 64-bit COP0 register
  MIPS: OCTEON: Save and restore CP2 SHA3 state
  MIPS: OCTEON: Fix FP context save.
  MIPS: OCTEON: Save/Restore wider multiply registers in OCTEON III CPUs
  MIPS: boot: Provide more uImage options
  MIPS: Remove unneeded #ifdef __KERNEL__ from asm/processor.h
  MIPS: ip22-gio: Remove legacy suspend/resume support
  mips: pci: Add ifdef around pci_proc_domain
  ...

45 files changed, 1149 insertions, 390 deletions

diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index 200efeac418..526539cbc99 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -1,4 +1,5 @@
 # MIPS headers
+generic-(CONFIG_GENERIC_CSUM) += checksum.h
 generic-y += cputime.h
 generic-y += current.h
 generic-y += dma-contiguous.h
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 6caf8766b80..0cae4595e98 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -19,7 +19,7 @@
 #include <asm/asmmacro-64.h>
 #endif
 
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	.macro	local_irq_enable reg=t0
 	ei
 	irq_enable_hazard
@@ -104,7 +104,8 @@
 	.endm
 
 	.macro	fpu_save_double thread status tmp
-#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2)
+#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) || \
+		defined(CONFIG_CPU_MIPS32_R6)
 	sll	\tmp, \status, 5
 	bgez	\tmp, 10f
 	fpu_save_16odd \thread
@@ -160,7 +161,8 @@
 	.endm
 
 	.macro	fpu_restore_double thread status tmp
-#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2)
+#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) || \
+		defined(CONFIG_CPU_MIPS32_R6)
 	sll	\tmp, \status, 5
 	bgez	\tmp, 10f				# 16 register mode?
 
@@ -170,16 +172,16 @@
 	fpu_restore_16even \thread \tmp
 	.endm
 
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	.macro	_EXT	rd, rs, p, s
 	ext	\rd, \rs, \p, \s
 	.endm
-#else /* !CONFIG_CPU_MIPSR2 */
+#else /* !CONFIG_CPU_MIPSR2 || !CONFIG_CPU_MIPSR6 */
 	.macro	_EXT	rd, rs, p, s
 	srl	\rd, \rs, \p
 	andi	\rd, \rd, (1 << \s) - 1
 	.endm
-#endif /* !CONFIG_CPU_MIPSR2 */
+#endif /* !CONFIG_CPU_MIPSR2 || !CONFIG_CPU_MIPSR6 */
 
 /*
  * Temporary until all gas have MT ASE support
@@ -304,7 +306,7 @@
 	.set	push
 	.set	noat
 	SET_HARDFLOAT
-	add	$1, \base, \off
+	addu	$1, \base, \off
 	.word	LDD_MSA_INSN | (\wd << 6)
 	.set	pop
 	.endm
@@ -313,7 +315,7 @@
 	.set	push
 	.set	noat
 	SET_HARDFLOAT
-	add	$1, \base, \off
+	addu	$1, \base, \off
 	.word	STD_MSA_INSN | (\wd << 6)
 	.set	pop
 	.endm
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 857da84cfc9..26d436336f2 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -54,19 +54,19 @@ static __inline__ void atomic_##op(int i, atomic_t * v)			      \
 		"	sc	%0, %1					\n"   \
 		"	beqzl	%0, 1b					\n"   \
 		"	.set	mips0					\n"   \
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (v->counter)	      \
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)	      \
 		: "Ir" (i));						      \
 	} else if (kernel_uses_llsc) {					      \
 		int temp;						      \
 									      \
 		do {							      \
 			__asm__ __volatile__(				      \
-			"	.set	arch=r4000			\n"   \
+			"	.set	"MIPS_ISA_LEVEL"		\n"   \
 			"	ll	%0, %1		# atomic_" #op "\n"   \
 			"	" #asm_op " %0, %2			\n"   \
 			"	sc	%0, %1				\n"   \
 			"	.set	mips0				\n"   \
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (v->counter)      \
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)      \
 			: "Ir" (i));					      \
 		} while (unlikely(!temp));				      \
 	} else {							      \
@@ -97,20 +97,20 @@ static __inline__ int atomic_##op##_return(int i, atomic_t * v)		      \
 		"	" #asm_op " %0, %1, %3				\n"   \
 		"	.set	mips0					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
-		  "+" GCC_OFF12_ASM() (v->counter)			      \
+		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
 		: "Ir" (i));						      \
 	} else if (kernel_uses_llsc) {					      \
 		int temp;						      \
 									      \
 		do {							      \
 			__asm__ __volatile__(				      \
-			"	.set	arch=r4000			\n"   \
+			"	.set	"MIPS_ISA_LEVEL"		\n"   \
 			"	ll	%1, %2	# atomic_" #op "_return	\n"   \
 			"	" #asm_op " %0, %1, %3			\n"   \
 			"	sc	%0, %2				\n"   \
 			"	.set	mips0				\n"   \
 			: "=&r" (result), "=&r" (temp),			      \
-			  "+" GCC_OFF12_ASM() (v->counter)		      \
+			  "+" GCC_OFF_SMALL_ASM() (v->counter)		      \
 			: "Ir" (i));					      \
 		} while (unlikely(!result));				      \
 									      \
@@ -171,14 +171,14 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 		"1:							\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF12_ASM() (v->counter)
-		: "Ir" (i), GCC_OFF12_ASM() (v->counter)
+		  "+" GCC_OFF_SMALL_ASM() (v->counter)
+		: "Ir" (i), GCC_OFF_SMALL_ASM() (v->counter)
 		: "memory");
 	} else if (kernel_uses_llsc) {
 		int temp;
 
 		__asm__ __volatile__(
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"1:	ll	%1, %2		# atomic_sub_if_positive\n"
 		"	subu	%0, %1, %3				\n"
 		"	bltz	%0, 1f					\n"
@@ -190,7 +190,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 		"1:							\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF12_ASM() (v->counter)
+		  "+" GCC_OFF_SMALL_ASM() (v->counter)
 		: "Ir" (i));
 	} else {
 		unsigned long flags;
@@ -333,19 +333,19 @@ static __inline__ void atomic64_##op(long i, atomic64_t * v)		      \
 		"	scd	%0, %1					\n"   \
 		"	beqzl	%0, 1b					\n"   \
 		"	.set	mips0					\n"   \
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (v->counter)	      \
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)	      \
 		: "Ir" (i));						      \
 	} else if (kernel_uses_llsc) {					      \
 		long temp;						      \
 									      \
 		do {							      \
 			__asm__ __volatile__(				      \
-			"	.set	arch=r4000			\n"   \
+			"	.set	"MIPS_ISA_LEVEL"		\n"   \
 			"	lld	%0, %1		# atomic64_" #op "\n" \
 			"	" #asm_op " %0, %2			\n"   \
 			"	scd	%0, %1				\n"   \
 			"	.set	mips0				\n"   \
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (v->counter)      \
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)      \
 			: "Ir" (i));					      \
 		} while (unlikely(!temp));				      \
 	} else {							      \
@@ -376,21 +376,21 @@ static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)	      \
 		"	" #asm_op " %0, %1, %3				\n"   \
 		"	.set	mips0					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
-		  "+" GCC_OFF12_ASM() (v->counter)			      \
+		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
 		: "Ir" (i));						      \
 	} else if (kernel_uses_llsc) {					      \
 		long temp;						      \
 									      \
 		do {							      \
 			__asm__ __volatile__(				      \
-			"	.set	arch=r4000			\n"   \
+			"	.set	"MIPS_ISA_LEVEL"		\n"   \
 			"	lld	%1, %2	# atomic64_" #op "_return\n"  \
 			"	" #asm_op " %0, %1, %3			\n"   \
 			"	scd	%0, %2				\n"   \
 			"	.set	mips0				\n"   \
 			: "=&r" (result), "=&r" (temp),			      \
-			  "=" GCC_OFF12_ASM() (v->counter)		      \
-			: "Ir" (i), GCC_OFF12_ASM() (v->counter)	      \
+			  "=" GCC_OFF_SMALL_ASM() (v->counter)		      \
+			: "Ir" (i), GCC_OFF_SMALL_ASM() (v->counter)	      \
 			: "memory");					      \
 		} while (unlikely(!result));				      \
 									      \
@@ -452,14 +452,14 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
 		"1:							\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp),
-		  "=" GCC_OFF12_ASM() (v->counter)
-		: "Ir" (i), GCC_OFF12_ASM() (v->counter)
+		  "=" GCC_OFF_SMALL_ASM() (v->counter)
+		: "Ir" (i), GCC_OFF_SMALL_ASM() (v->counter)
 		: "memory");
 	} else if (kernel_uses_llsc) {
 		long temp;
 
 		__asm__ __volatile__(
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"1:	lld	%1, %2		# atomic64_sub_if_positive\n"
 		"	dsubu	%0, %1, %3				\n"
 		"	bltz	%0, 1f					\n"
@@ -471,7 +471,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
 		"1:							\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF12_ASM() (v->counter)
+		  "+" GCC_OFF_SMALL_ASM() (v->counter)
 		: "Ir" (i));
 	} else {
 		unsigned long flags;
diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index 6663bcca9d0..9f935f6aa99 100644
--- a/arch/mips/include/asm/bitops.h
+++ b/arch/mips/include/asm/bitops.h
@@ -79,28 +79,28 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
 		"	" __SC	"%0, %1					\n"
 		"	beqzl	%0, 1b					\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "=" GCC_OFF12_ASM() (*m)
-		: "ir" (1UL << bit), GCC_OFF12_ASM() (*m));
-#ifdef CONFIG_CPU_MIPSR2
+		: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*m)
+		: "ir" (1UL << bit), GCC_OFF_SMALL_ASM() (*m));
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(bit)) {
 		do {
 			__asm__ __volatile__(
 			"	" __LL "%0, %1		# set_bit	\n"
 			"	" __INS "%0, %3, %2, 1			\n"
 			"	" __SC "%0, %1				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 			: "ir" (bit), "r" (~0));
 		} while (unlikely(!temp));
-#endif /* CONFIG_CPU_MIPSR2 */
+#endif /* CONFIG_CPU_MIPSR2 || CONFIG_CPU_MIPSR6 */
 	} else if (kernel_uses_llsc) {
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL "%0, %1		# set_bit	\n"
 			"	or	%0, %2				\n"
 			"	" __SC	"%0, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 			: "ir" (1UL << bit));
 		} while (unlikely(!temp));
 	} else
@@ -131,28 +131,28 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
 		"	" __SC "%0, %1					\n"
 		"	beqzl	%0, 1b					\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 		: "ir" (~(1UL << bit)));
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(bit)) {
 		do {
 			__asm__ __volatile__(
 			"	" __LL "%0, %1		# clear_bit	\n"
 			"	" __INS "%0, $0, %2, 1			\n"
 			"	" __SC "%0, %1				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 			: "ir" (bit));
 		} while (unlikely(!temp));
-#endif /* CONFIG_CPU_MIPSR2 */
+#endif /* CONFIG_CPU_MIPSR2 || CONFIG_CPU_MIPSR6 */
 	} else if (kernel_uses_llsc) {
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL "%0, %1		# clear_bit	\n"
 			"	and	%0, %2				\n"
 			"	" __SC "%0, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 			: "ir" (~(1UL << bit)));
 		} while (unlikely(!temp));
 	} else
@@ -197,7 +197,7 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
 		"	" __SC	"%0, %1				\n"
 		"	beqzl	%0, 1b				\n"
 		"	.set	mips0				\n"
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 		: "ir" (1UL << bit));
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
@@ -205,12 +205,12 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL "%0, %1		# change_bit	\n"
 			"	xor	%0, %2				\n"
 			"	" __SC	"%0, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
 			: "ir" (1UL << bit));
 		} while (unlikely(!temp));
 	} else
@@ -245,7 +245,7 @@ static inline int test_and_set_bit(unsigned long nr,
 		"	beqzl	%2, 1b					\n"
 		"	and	%2, %0, %3				\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
 		: "memory");
 	} else if (kernel_uses_llsc) {
@@ -254,12 +254,12 @@ static inline int test_and_set_bit(unsigned long nr,
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL "%0, %1	# test_and_set_bit	\n"
 			"	or	%2, %0, %3			\n"
 			"	" __SC	"%2, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
 			: "memory");
 		} while (unlikely(!res));
@@ -308,12 +308,12 @@ static inline int test_and_set_bit_lock(unsigned long nr,
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL "%0, %1	# test_and_set_bit	\n"
 			"	or	%2, %0, %3			\n"
 			"	" __SC	"%2, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
 			: "memory");
 		} while (unlikely(!res));
@@ -355,10 +355,10 @@ static inline int test_and_clear_bit(unsigned long nr,
 		"	beqzl	%2, 1b					\n"
 		"	and	%2, %0, %3				\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
 		: "memory");
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(nr)) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
@@ -369,7 +369,7 @@ static inline int test_and_clear_bit(unsigned long nr,
 			"	" __EXT "%2, %0, %3, 1			\n"
 			"	" __INS "%0, $0, %3, 1			\n"
 			"	" __SC	"%0, %1				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "ir" (bit)
 			: "memory");
 		} while (unlikely(!temp));
@@ -380,13 +380,13 @@ static inline int test_and_clear_bit(unsigned long nr,
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL	"%0, %1 # test_and_clear_bit	\n"
 			"	or	%2, %0, %3			\n"
 			"	xor	%2, %3				\n"
 			"	" __SC	"%2, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
 			: "memory");
 		} while (unlikely(!res));
@@ -428,7 +428,7 @@ static inline int test_and_change_bit(unsigned long nr,
 		"	beqzl	%2, 1b					\n"
 		"	and	%2, %0, %3				\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
 		: "memory");
 	} else if (kernel_uses_llsc) {
@@ -437,12 +437,12 @@ static inline int test_and_change_bit(unsigned long nr,
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	" __LL	"%0, %1 # test_and_change_bit	\n"
 			"	xor	%2, %0, %3			\n"
 			"	" __SC	"\t%2, %1			\n"
 			"	.set	mips0				\n"
-			: "=&r" (temp), "+" GCC_OFF12_ASM() (*m), "=&r" (res)
+			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
 			: "memory");
 		} while (unlikely(!res));
@@ -485,7 +485,7 @@ static inline unsigned long __fls(unsigned long word)
 	    __builtin_constant_p(cpu_has_clo_clz) && cpu_has_clo_clz) {
 		__asm__(
 		"	.set	push					\n"
-		"	.set	mips32					\n"
+		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"	clz	%0, %1					\n"
 		"	.set	pop					\n"
 		: "=r" (num)
@@ -498,7 +498,7 @@ static inline unsigned long __fls(unsigned long word)
 	    __builtin_constant_p(cpu_has_mips64) && cpu_has_mips64) {
 		__asm__(
 		"	.set	push					\n"
-		"	.set	mips64					\n"
+		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"	dclz	%0, %1					\n"
 		"	.set	pop					\n"
 		: "=r" (num)
@@ -562,7 +562,7 @@ static inline int fls(int x)
 	if (__builtin_constant_p(cpu_has_clo_clz) && cpu_has_clo_clz) {
 		__asm__(
 		"	.set	push					\n"
-		"	.set	mips32					\n"
+		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"	clz	%0, %1					\n"
 		"	.set	pop					\n"
 		: "=r" (x)
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h
index 3418c51e115..5c585c5c1c3 100644
--- a/arch/mips/include/asm/checksum.h
+++ b/arch/mips/include/asm/checksum.h
@@ -12,6 +12,10 @@
 #ifndef _ASM_CHECKSUM_H
 #define _ASM_CHECKSUM_H
 
+#ifdef CONFIG_GENERIC_CSUM
+#include <asm-generic/checksum.h>
+#else
+
 #include <linux/in6.h>
 
 #include <asm/uaccess.h>
@@ -99,27 +103,23 @@ __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
  */
 __wsum csum_partial_copy_nocheck(const void *src, void *dst,
 				       int len, __wsum sum);
+#define csum_partial_copy_nocheck csum_partial_copy_nocheck
 
 /*
  *	Fold a partial checksum without adding pseudo headers
  */
-static inline __sum16 csum_fold(__wsum sum)
+static inline __sum16 csum_fold(__wsum csum)
 {
-	__asm__(
-	"	.set	push		# csum_fold\n"
-	"	.set	noat		\n"
-	"	sll	$1, %0, 16	\n"
-	"	addu	%0, $1		\n"
-	"	sltu	$1, %0, $1	\n"
-	"	srl	%0, %0, 16	\n"
-	"	addu	%0, $1		\n"
-	"	xori	%0, 0xffff	\n"
-	"	.set	pop"
-	: "=r" (sum)
-	: "0" (sum));
+	u32 sum = (__force u32)csum;;
 
-	return (__force __sum16)sum;
+	sum += (sum << 16);
+	csum = (sum < csum);
+	sum >>= 16;
+	sum += csum;
+
+	return (__force __sum16)~sum;
 }
+#define csum_fold csum_fold
 
 /*
  *	This is a version of ip_compute_csum() optimized for IP headers,
@@ -158,6 +158,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
 
 	return csum_fold(csum);
 }
+#define ip_fast_csum ip_fast_csum
 
 static inline __wsum csum_tcpudp_nofold(__be32 saddr,
 	__be32 daddr, unsigned short len, unsigned short proto,
@@ -200,18 +201,7 @@ static inline __wsum csum_tcpudp_nofold(__be32 saddr,
 
 	return sum;
 }
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
-						   unsigned short len,
-						   unsigned short proto,
-						   __wsum sum)
-{
-	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
-}
+#define csum_tcpudp_nofold csum_tcpudp_nofold
 
 /*
  * this routine is used for miscellaneous IP-like checksums, mainly
@@ -287,4 +277,7 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
 	return csum_fold(sum);
 }
 
+#include <asm-generic/checksum.h>
+#endif /* CONFIG_GENERIC_CSUM */
+
 #endif /* _ASM_CHECKSUM_H */
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index 28b1edf1950..d0a2a68ca60 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -31,24 +31,24 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
 		"	sc	%2, %1					\n"
 		"	beqzl	%2, 1b					\n"
 		"	.set	mips0					\n"
-		: "=&r" (retval), "=" GCC_OFF12_ASM() (*m), "=&r" (dummy)
-		: GCC_OFF12_ASM() (*m), "Jr" (val)
+		: "=&r" (retval), "=" GCC_OFF_SMALL_ASM() (*m), "=&r" (dummy)
+		: GCC_OFF_SMALL_ASM() (*m), "Jr" (val)
 		: "memory");
 	} else if (kernel_uses_llsc) {
 		unsigned long dummy;
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	ll	%0, %3		# xchg_u32	\n"
 			"	.set	mips0				\n"
 			"	move	%2, %z4				\n"
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	sc	%2, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (retval), "=" GCC_OFF12_ASM() (*m),
+			: "=&r" (retval), "=" GCC_OFF_SMALL_ASM() (*m),
 			  "=&r" (dummy)
-			: GCC_OFF12_ASM() (*m), "Jr" (val)
+			: GCC_OFF_SMALL_ASM() (*m), "Jr" (val)
 			: "memory");
 		} while (unlikely(!dummy));
 	} else {
@@ -82,22 +82,22 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val)
 		"	scd	%2, %1					\n"
 		"	beqzl	%2, 1b					\n"
 		"	.set	mips0					\n"
-		: "=&r" (retval), "=" GCC_OFF12_ASM() (*m), "=&r" (dummy)
-		: GCC_OFF12_ASM() (*m), "Jr" (val)
+		: "=&r" (retval), "=" GCC_OFF_SMALL_ASM() (*m), "=&r" (dummy)
+		: GCC_OFF_SMALL_ASM() (*m), "Jr" (val)
 		: "memory");
 	} else if (kernel_uses_llsc) {
 		unsigned long dummy;
 
 		do {
 			__asm__ __volatile__(
-			"	.set	arch=r4000			\n"
+			"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"
 			"	lld	%0, %3		# xchg_u64	\n"
 			"	move	%2, %z4				\n"
 			"	scd	%2, %1				\n"
 			"	.set	mips0				\n"
-			: "=&r" (retval), "=" GCC_OFF12_ASM() (*m),
+			: "=&r" (retval), "=" GCC_OFF_SMALL_ASM() (*m),
 			  "=&r" (dummy)
-			: GCC_OFF12_ASM() (*m), "Jr" (val)
+			: GCC_OFF_SMALL_ASM() (*m), "Jr" (val)
 			: "memory");
 		} while (unlikely(!dummy));
 	} else {
@@ -158,25 +158,25 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
 		"	beqzl	$1, 1b				\n"	\
 		"2:						\n"	\
 		"	.set	pop				\n"	\
-		: "=&r" (__ret), "=" GCC_OFF12_ASM() (*m)		\
-		: GCC_OFF12_ASM() (*m), "Jr" (old), "Jr" (new)		\
+		: "=&r" (__ret), "=" GCC_OFF_SMALL_ASM() (*m)		\
+		: GCC_OFF_SMALL_ASM() (*m), "Jr" (old), "Jr" (new)		\
 		: "memory");						\
 	} else if (kernel_uses_llsc) {					\
 		__asm__ __volatile__(					\
 		"	.set	push				\n"	\
 		"	.set	noat				\n"	\
-		"	.set	arch=r4000			\n"	\
+		"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"	\
 		"1:	" ld "	%0, %2		# __cmpxchg_asm \n"	\
 		"	bne	%0, %z3, 2f			\n"	\
 		"	.set	mips0				\n"	\
 		"	move	$1, %z4				\n"	\
-		"	.set	arch=r4000			\n"	\
+		"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"	\
 		"	" st "	$1, %1				\n"	\
 		"	beqz	$1, 1b				\n"	\
 		"	.set	pop				\n"	\
 		"2:						\n"	\
-		: "=&r" (__ret), "=" GCC_OFF12_ASM() (*m)		\
-		: GCC_OFF12_ASM() (*m), "Jr" (old), "Jr" (new)		\
+		: "=&r" (__ret), "=" GCC_OFF_SMALL_ASM() (*m)		\
+		: GCC_OFF_SMALL_ASM() (*m), "Jr" (old), "Jr" (new)		\
 		: "memory");						\
 	} else {							\
 		unsigned long __flags;					\
diff --git a/arch/mips/include/asm/compiler.h b/arch/mips/include/asm/compiler.h
index c73815e0123..e081a265f42 100644
--- a/arch/mips/include/asm/compiler.h
+++ b/arch/mips/include/asm/compiler.h
@@ -16,12 +16,30 @@
 #define GCC_REG_ACCUM "accum"
 #endif
 
+#ifdef CONFIG_CPU_MIPSR6
+/* All MIPS R6 toolchains support the ZC constrain */
+#define GCC_OFF_SMALL_ASM() "ZC"
+#else
 #ifndef CONFIG_CPU_MICROMIPS
-#define GCC_OFF12_ASM() "R"
+#define GCC_OFF_SMALL_ASM() "R"
 #elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
-#define GCC_OFF12_ASM() "ZC"
+#define GCC_OFF_SMALL_ASM() "ZC"
 #else
 #error "microMIPS compilation unsupported with GCC older than 4.9"
-#endif
+#endif /* CONFIG_CPU_MICROMIPS */
+#endif /* CONFIG_CPU_MIPSR6 */
+
+#ifdef CONFIG_CPU_MIPSR6
+#define MIPS_ISA_LEVEL "mips64r6"
+#define MIPS_ISA_ARCH_LEVEL MIPS_ISA_LEVEL
+#define MIPS_ISA_LEVEL_RAW mips64r6
+#define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
+#else
+/* MIPS64 is a superset of MIPS32 */
+#define MIPS_ISA_LEVEL "mips64r2"
+#define MIPS_ISA_ARCH_LEVEL "arch=r4000"
+#define MIPS_ISA_LEVEL_RAW mips64r2
+#define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
+#endif /* CONFIG_CPU_MIPSR6 */
 
 #endif /* _ASM_COMPILER_H */
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 2897cfafcaf..0d8208de9a3 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -38,6 +38,9 @@
 #ifndef cpu_has_maar
 #define cpu_has_maar		(cpu_data[0].options & MIPS_CPU_MAAR)
 #endif
+#ifndef cpu_has_rw_llb
+#define cpu_has_rw_llb		(cpu_data[0].options & MIPS_CPU_RW_LLB)
+#endif
 
 /*
  * For the moment we don't consider R6000 and R8000 so we can assume that
@@ -171,6 +174,9 @@
 #endif
 #endif
 
+#ifndef cpu_has_mips_1
+# define cpu_has_mips_1		(!cpu_has_mips_r6)
+#endif
 #ifndef cpu_has_mips_2
 # define cpu_has_mips_2		(cpu_data[0].isa_level & MIPS_CPU_ISA_II)
 #endif
@@ -189,12 +195,18 @@
 #ifndef cpu_has_mips32r2
 # define cpu_has_mips32r2	(cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
 #endif
+#ifndef cpu_has_mips32r6
+# define cpu_has_mips32r6	(cpu_data[0].isa_level & MIPS_CPU_ISA_M32R6)
+#endif
 #ifndef cpu_has_mips64r1
 # define cpu_has_mips64r1	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
 #endif
 #ifndef cpu_has_mips64r2
 # define cpu_has_mips64r2	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
 #endif
+#ifndef cpu_has_mips64r6
+# define cpu_has_mips64r6	(cpu_data[0].isa_level & MIPS_CPU_ISA_M64R6)
+#endif
 
 /*
  * Shortcuts ...
@@ -208,17 +220,23 @@
 #define cpu_has_mips_4_5_r	(cpu_has_mips_4 | cpu_has_mips_5_r)
 #define cpu_has_mips_5_r	(cpu_has_mips_5 | cpu_has_mips_r)
 
-#define cpu_has_mips_4_5_r2	(cpu_has_mips_4_5 | cpu_has_mips_r2)
+#define cpu_has_mips_4_5_r2_r6	(cpu_has_mips_4_5 | cpu_has_mips_r2 | \
+				 cpu_has_mips_r6)
 
-#define cpu_has_mips32	(cpu_has_mips32r1 | cpu_has_mips32r2)
-#define cpu_has_mips64	(cpu_has_mips64r1 | cpu_has_mips64r2)
+#define cpu_has_mips32	(cpu_has_mips32r1 | cpu_has_mips32r2 | cpu_has_mips32r6)
+#define cpu_has_mips64	(cpu_has_mips64r1 | cpu_has_mips64r2 | cpu_has_mips64r6)
 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
+#define cpu_has_mips_r6	(cpu_has_mips32r6 | cpu_has_mips64r6)
 #define cpu_has_mips_r	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
-			 cpu_has_mips64r1 | cpu_has_mips64r2)
+			 cpu_has_mips32r6 | cpu_has_mips64r1 | \
+			 cpu_has_mips64r2 | cpu_has_mips64r6)
+
+/* MIPSR2 and MIPSR6 have a lot of similarities */
+#define cpu_has_mips_r2_r6	(cpu_has_mips_r2 | cpu_has_mips_r6)
 
 #ifndef cpu_has_mips_r2_exec_hazard
-#define cpu_has_mips_r2_exec_hazard cpu_has_mips_r2
+#define cpu_has_mips_r2_exec_hazard (cpu_has_mips_r2 | cpu_has_mips_r6)
 #endif
 
 /*
diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h
index a6c9ccb33c5..c3f4f2d2e10 100644
--- a/arch/mips/include/asm/cpu-info.h
+++ b/arch/mips/include/asm/cpu-info.h
@@ -84,6 +84,11 @@ struct cpuinfo_mips {
 	 * (shifted by _CACHE_SHIFT)
 	 */
 	unsigned int		writecombine;
+	/*
+	 * Simple counter to prevent enabling HTW in nested
+	 * htw_start/htw_stop calls
+	 */
+	unsigned int		htw_seq;
 } __attribute__((aligned(SMP_CACHE_BYTES)));
 
 extern struct cpuinfo_mips cpu_data[];
diff --git a/arch/mips/include/asm/cpu-type.h b/arch/mips/include/asm/cpu-type.h
index b4e2bd87df5..8245875f8b3 100644
--- a/arch/mips/include/asm/cpu-type.h
+++ b/arch/mips/include/asm/cpu-type.h
@@ -54,6 +54,13 @@ static inline int __pure __get_cpu_type(const int cpu_type)
 	case CPU_M5150:
 #endif
 
+#if defined(CONFIG_SYS_HAS_CPU_MIPS32_R2) || \
+    defined(CONFIG_SYS_HAS_CPU_MIPS32_R6) || \
+    defined(CONFIG_SYS_HAS_CPU_MIPS64_R2) || \
+    defined(CONFIG_SYS_HAS_CPU_MIPS64_R6)
+	case CPU_QEMU_GENERIC:
+#endif
+
 #ifdef CONFIG_SYS_HAS_CPU_MIPS64_R1
 	case CPU_5KC:
 	case CPU_5KE:
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 33866fce4d6..15687234d70 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -93,6 +93,7 @@
  * These are the PRID's for when 23:16 == PRID_COMP_MIPS
  */
 
+#define PRID_IMP_QEMU_GENERIC	0x0000
 #define PRID_IMP_4KC		0x8000
 #define PRID_IMP_5KC		0x8100
 #define PRID_IMP_20KC		0x8200
@@ -312,6 +313,8 @@ enum cpu_type_enum {
 	CPU_LOONGSON3, CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS,
 	CPU_CAVIUM_OCTEON2, CPU_CAVIUM_OCTEON3, CPU_XLR, CPU_XLP,
 
+	CPU_QEMU_GENERIC,
+
 	CPU_LAST
 };
 
@@ -329,11 +332,14 @@ enum cpu_type_enum {
 #define MIPS_CPU_ISA_M32R2	0x00000020
 #define MIPS_CPU_ISA_M64R1	0x00000040
 #define MIPS_CPU_ISA_M64R2	0x00000080
+#define MIPS_CPU_ISA_M32R6	0x00000100
+#define MIPS_CPU_ISA_M64R6	0x00000200
 
 #define MIPS_CPU_ISA_32BIT (MIPS_CPU_ISA_II | MIPS_CPU_ISA_M32R1 | \
-	MIPS_CPU_ISA_M32R2)
+	MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M32R6)
 #define MIPS_CPU_ISA_64BIT (MIPS_CPU_ISA_III | MIPS_CPU_ISA_IV | \
-	MIPS_CPU_ISA_V | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2)
+	MIPS_CPU_ISA_V | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2 | \
+	MIPS_CPU_ISA_M64R6)
 
 /*
  * CPU Option encodings
@@ -370,6 +376,7 @@ enum cpu_type_enum {
 #define MIPS_CPU_RIXIEX		0x200000000ull /* CPU has unique exception codes for {Read, Execute}-Inhibit exceptions */
 #define MIPS_CPU_MAAR		0x400000000ull /* MAAR(I) registers are present */
 #define MIPS_CPU_FRE		0x800000000ull /* FRE & UFE bits implemented */
+#define MIPS_CPU_RW_LLB		0x1000000000ull /* LLADDR/LLB writes are allowed */
 
 /*
  * CPU ASE encodings
diff --git a/arch/mips/include/asm/edac.h b/arch/mips/include/asm/edac.h
index ae6fedcb006..94105d3f58f 100644
--- a/arch/mips/include/asm/edac.h
+++ b/arch/mips/include/asm/edac.h
@@ -26,8 +26,8 @@ static inline void atomic_scrub(void *va, u32 size)
 		"	sc	%0, %1					\n"
 		"	beqz	%0, 1b					\n"
 		"	.set	mips0					\n"
-		: "=&r" (temp), "=" GCC_OFF12_ASM() (*virt_addr)
-		: GCC_OFF12_ASM() (*virt_addr));
+		: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*virt_addr)
+		: GCC_OFF_SMALL_ASM() (*virt_addr));
 
 		virt_addr++;
 	}
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h
index eb4d95de619..535f196ffe0 100644
--- a/arch/mips/include/asm/elf.h
+++ b/arch/mips/include/asm/elf.h
@@ -417,13 +417,15 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm);
 struct arch_elf_state {
 	int fp_abi;
 	int interp_fp_abi;
-	int overall_abi;
+	int overall_fp_mode;
 };
 
+#define MIPS_ABI_FP_UNKNOWN	(-1)	/* Unknown FP ABI (kernel internal) */
+
 #define INIT_ARCH_ELF_STATE {			\
-	.fp_abi = -1,				\
-	.interp_fp_abi = -1,			\
-	.overall_abi = -1,			\
+	.fp_abi = MIPS_ABI_FP_UNKNOWN,		\
+	.interp_fp_abi = MIPS_ABI_FP_UNKNOWN,	\
+	.overall_fp_mode = -1,			\
 }
 
 extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
diff --git a/arch/mips/include/asm/fpu.h b/arch/mips/include/asm/fpu.h
index affebb78f5d..dd083e999b0 100644
--- a/arch/mips/include/asm/fpu.h
+++ b/arch/mips/include/asm/fpu.h
@@ -68,7 +68,8 @@ static inline int __enable_fpu(enum fpu_mode mode)
 		goto fr_common;
 
 	case FPU_64BIT:
-#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_64BIT))
+#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS32_R6) \
+      || defined(CONFIG_64BIT))
 		/* we only have a 32-bit FPU */
 		return SIGFPE;
 #endif
diff --git a/arch/mips/include/asm/futex.h b/arch/mips/include/asm/futex.h
index ef9987a61d8..1de190bdfb9 100644
--- a/arch/mips/include/asm/futex.h
+++ b/arch/mips/include/asm/futex.h
@@ -45,19 +45,19 @@
 		"	"__UA_ADDR "\t2b, 4b			\n"	\
 		"	.previous				\n"	\
 		: "=r" (ret), "=&r" (oldval),				\
-		  "=" GCC_OFF12_ASM() (*uaddr)				\
-		: "0" (0), GCC_OFF12_ASM() (*uaddr), "Jr" (oparg),	\
+		  "=" GCC_OFF_SMALL_ASM() (*uaddr)				\
+		: "0" (0), GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oparg),	\
 		  "i" (-EFAULT)						\
 		: "memory");						\
 	} else if (cpu_has_llsc) {					\
 		__asm__ __volatile__(					\
 		"	.set	push				\n"	\
 		"	.set	noat				\n"	\
-		"	.set	arch=r4000			\n"	\
+		"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"	\
 		"1:	"user_ll("%1", "%4")" # __futex_atomic_op\n"	\
 		"	.set	mips0				\n"	\
 		"	" insn	"				\n"	\
-		"	.set	arch=r4000			\n"	\
+		"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"	\
 		"2:	"user_sc("$1", "%2")"			\n"	\
 		"	beqz	$1, 1b				\n"	\
 		__WEAK_LLSC_MB						\
@@ -74,8 +74,8 @@
 		"	"__UA_ADDR "\t2b, 4b			\n"	\
 		"	.previous				\n"	\
 		: "=r" (ret), "=&r" (oldval),				\
-		  "=" GCC_OFF12_ASM() (*uaddr)				\
-		: "0" (0), GCC_OFF12_ASM() (*uaddr), "Jr" (oparg),	\
+		  "=" GCC_OFF_SMALL_ASM() (*uaddr)				\
+		: "0" (0), GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oparg),	\
 		  "i" (-EFAULT)						\
 		: "memory");						\
 	} else								\
@@ -174,8 +174,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 		"	"__UA_ADDR "\t1b, 4b				\n"
 		"	"__UA_ADDR "\t2b, 4b				\n"
 		"	.previous					\n"
-		: "+r" (ret), "=&r" (val), "=" GCC_OFF12_ASM() (*uaddr)
-		: GCC_OFF12_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
+		: "+r" (ret), "=&r" (val), "=" GCC_OFF_SMALL_ASM() (*uaddr)
+		: GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
 		  "i" (-EFAULT)
 		: "memory");
 	} else if (cpu_has_llsc) {
@@ -183,12 +183,12 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 		"# futex_atomic_cmpxchg_inatomic			\n"
 		"	.set	push					\n"
 		"	.set	noat					\n"
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"
 		"1:	"user_ll("%1", "%3")"				\n"
 		"	bne	%1, %z4, 3f				\n"
 		"	.set	mips0					\n"
 		"	move	$1, %z5					\n"
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"
 		"2:	"user_sc("$1", "%2")"				\n"
 		"	beqz	$1, 1b					\n"
 		__WEAK_LLSC_MB
@@ -203,8 +203,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 		"	"__UA_ADDR "\t1b, 4b				\n"
 		"	"__UA_ADDR "\t2b, 4b				\n"
 		"	.previous					\n"
-		: "+r" (ret), "=&r" (val), "=" GCC_OFF12_ASM() (*uaddr)
-		: GCC_OFF12_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
+		: "+r" (ret), "=&r" (val), "=" GCC_OFF_SMALL_ASM() (*uaddr)
+		: GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
 		  "i" (-EFAULT)
 		: "memory");
 	} else
diff --git a/arch/mips/include/asm/gio_device.h b/arch/mips/include/asm/gio_device.h
index 4be1a57cdbb..71a986e9b69 100644
--- a/arch/mips/include/asm/gio_device.h
+++ b/arch/mips/include/asm/gio_device.h
@@ -25,8 +25,6 @@ struct gio_driver {
 
 	int  (*probe)(struct gio_device *, const struct gio_device_id *);
 	void (*remove)(struct gio_device *);
-	int  (*suspend)(struct gio_device *, pm_message_t);
-	int  (*resume)(struct gio_device *);
 	void (*shutdown)(struct gio_device *);
 
 	struct device_driver driver;
diff --git a/arch/mips/include/asm/hazards.h b/arch/mips/include/asm/hazards.h
index e3ee92d4dbe..4087b47ad1c 100644
--- a/arch/mips/include/asm/hazards.h
+++ b/arch/mips/include/asm/hazards.h
@@ -11,6 +11,7 @@
 #define _ASM_HAZARDS_H
 
 #include <linux/stringify.h>
+#include <asm/compiler.h>
 
 #define ___ssnop							\
 	sll	$0, $0, 1
@@ -21,7 +22,7 @@
 /*
  * TLB hazards
  */
-#if defined(CONFIG_CPU_MIPSR2) && !defined(CONFIG_CPU_CAVIUM_OCTEON)
+#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) && !defined(CONFIG_CPU_CAVIUM_OCTEON)
 
 /*
  * MIPSR2 defines ehb for hazard avoidance
@@ -58,7 +59,7 @@ do {									\
 	unsigned long tmp;						\
 									\
 	__asm__ __volatile__(						\
-	"	.set	mips64r2				\n"	\
+	"	.set "MIPS_ISA_LEVEL"				\n"	\
 	"	dla	%0, 1f					\n"	\
 	"	jr.hb	%0					\n"	\
 	"	.set	mips0					\n"	\
@@ -132,7 +133,7 @@ do {									\
 
 #define instruction_hazard()						\
 do {									\
-	if (cpu_has_mips_r2)						\
+	if (cpu_has_mips_r2_r6)						\
 		__instruction_hazard();					\
 } while (0)
 
@@ -240,7 +241,7 @@ do {									\
 
 #define __disable_fpu_hazard
 
-#elif defined(CONFIG_CPU_MIPSR2)
+#elif defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 
 #define __enable_fpu_hazard						\
 	___ehb
diff --git a/arch/mips/include/asm/irqflags.h b/arch/mips/include/asm/irqflags.h
index 0fa5fdcd1f0..d60cc68fa31 100644
--- a/arch/mips/include/asm/irqflags.h
+++ b/arch/mips/include/asm/irqflags.h
@@ -15,9 +15,10 @@
 
 #include <linux/compiler.h>
 #include <linux/stringify.h>
+#include <asm/compiler.h>
 #include <asm/hazards.h>
 
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_CPU_MIPSR2) || defined (CONFIG_CPU_MIPSR6)
 
 static inline void arch_local_irq_disable(void)
 {
@@ -118,7 +119,7 @@ void arch_local_irq_disable(void);
 unsigned long arch_local_irq_save(void);
 void arch_local_irq_restore(unsigned long flags);
 void __arch_local_irq_restore(unsigned long flags);
-#endif /* CONFIG_CPU_MIPSR2 */
+#endif /* CONFIG_CPU_MIPSR2 || CONFIG_CPU_MIPSR6 */
 
 static inline void arch_local_irq_enable(void)
 {
@@ -126,7 +127,7 @@ static inline void arch_local_irq_enable(void)
 	"	.set	push						\n"
 	"	.set	reorder						\n"
 	"	.set	noat						\n"
-#if   defined(CONFIG_CPU_MIPSR2)
+#if   defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	"	ei							\n"
 #else
 	"	mfc0	$1,$12						\n"
diff --git a/arch/mips/include/asm/local.h b/arch/mips/include/asm/local.h
index 46dfc3c1fd4..8feaed62a2a 100644
--- a/arch/mips/include/asm/local.h
+++ b/arch/mips/include/asm/local.h
@@ -5,6 +5,7 @@
 #include <linux/bitops.h>
 #include <linux/atomic.h>
 #include <asm/cmpxchg.h>
+#include <asm/compiler.h>
 #include <asm/war.h>
 
 typedef struct
@@ -47,7 +48,7 @@ static __inline__ long local_add_return(long i, local_t * l)
 		unsigned long temp;
 
 		__asm__ __volatile__(
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"
 		"1:"	__LL	"%1, %2		# local_add_return	\n"
 		"	addu	%0, %1, %3				\n"
 			__SC	"%0, %2					\n"
@@ -92,7 +93,7 @@ static __inline__ long local_sub_return(long i, local_t * l)
 		unsigned long temp;
 
 		__asm__ __volatile__(
-		"	.set	arch=r4000				\n"
+		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"
 		"1:"	__LL	"%1, %2		# local_sub_return	\n"
 		"	subu	%0, %1, %3				\n"
 			__SC	"%0, %2					\n"
diff --git a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
index 1668ee57acb..cf92fe73399 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
@@ -8,11 +8,10 @@
 #ifndef __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
 #define __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H
 
-
-#define CP0_CYCLE_COUNTER $9, 6
 #define CP0_CVMCTL_REG $9, 7
 #define CP0_CVMMEMCTL_REG $11,7
 #define CP0_PRID_REG $15, 0
+#define CP0_DCACHE_ERR_REG $27, 1
 #define CP0_PRID_OCTEON_PASS1 0x000d0000
 #define CP0_PRID_OCTEON_CN30XX 0x000d0200
 
@@ -38,36 +37,55 @@
 	# Needed for octeon specific memcpy
 	or  v0, v0, 0x5001
 	xor v0, v0, 0x1001
-	# Read the processor ID register
-	mfc0 v1, CP0_PRID_REG
-	# Disable instruction prefetching (Octeon Pass1 errata)
-	or  v0, v0, 0x2000
-	# Skip reenable of prefetching for Octeon Pass1
-	beq v1, CP0_PRID_OCTEON_PASS1, skip
-	nop
-	# Reenable instruction prefetching, not on Pass1
-	xor v0, v0, 0x2000
-	# Strip off pass number off of processor id
-	srl v1, 8
-	sll v1, 8
-	# CN30XX needs some extra stuff turned off for better performance
-	bne v1, CP0_PRID_OCTEON_CN30XX, skip
-	nop
-	# CN30XX Use random Icache replacement
-	or  v0, v0, 0x400
-	# CN30XX Disable instruction prefetching
-	or  v0, v0, 0x2000
-skip:
 	# First clear off CvmCtl[IPPCI] bit and move the performance
 	# counters interrupt to IRQ 6
-	li	v1, ~(7 << 7)
+	dli	v1, ~(7 << 7)
 	and	v0, v0, v1
 	ori	v0, v0, (6 << 7)
+
+	mfc0	v1, CP0_PRID_REG
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9000		# 63-P1
+	beqz	t1, 4f
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9008		# 63-P2
+	beqz	t1, 4f
+	and	t1, v1, 0xfff8
+	xor	t1, t1, 0x9100		# 68-P1
+	beqz	t1, 4f
+	and	t1, v1, 0xff00
+	xor	t1, t1, 0x9200		# 66-PX
+	bnez	t1, 5f			# Skip WAR for others.
+	and	t1, v1, 0x00ff
+	slti	t1, t1, 2		# 66-P1.2 and later good.
+	beqz	t1, 5f
+
+4:	# core-16057 work around
+	or	v0, v0, 0x2000		# Set IPREF bit.
+
+5:	# No core-16057 work around
 	# Write the cavium control register
 	dmtc0	v0, CP0_CVMCTL_REG
 	sync
 	# Flush dcache after config change
 	cache	9, 0($0)
+	# Zero all of CVMSEG to make sure parity is correct
+	dli	v0, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE
+	dsll	v0, 7
+	beqz	v0, 2f
+1:	dsubu	v0, 8
+	sd	$0, -32768(v0)
+	bnez	v0, 1b
+2:
+	mfc0	v0, CP0_PRID_REG
+	bbit0	v0, 15, 1f
+	# OCTEON II or better have bit 15 set.  Clear the error bits.
+	and	t1, v0, 0xff00
+	dli	v0, 0x9500
+	bge	t1, v0, 1f  # OCTEON III has no DCACHE_ERR_REG COP0
+	dli	v0, 0x27
+	dmtc0	v0, CP0_DCACHE_ERR_REG
+1:
 	# Get my core id
 	rdhwr	v0, $0
 	# Jump the master to kernel_entry
diff --git a/arch/mips/include/asm/mach-cavium-octeon/war.h b/arch/mips/include/asm/mach-cavium-octeon/war.h
index eb72b35cf04..35c80be9220 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/war.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/war.h
@@ -22,4 +22,7 @@
 #define R10000_LLSC_WAR			0
 #define MIPS34K_MISSED_ITLB_WAR		0
 
+#define CAVIUM_OCTEON_DCACHE_PREFETCH_WAR	\
+	OCTEON_IS_MODEL(OCTEON_CN6XXX)
+
 #endif /* __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H */
diff --git a/arch/mips/include/asm/mach-pmcs-msp71xx/msp_regops.h b/arch/mips/include/asm/mach-pmcs-msp71xx/msp_regops.h
index 2e54b4bff5c..90dbe43c8d2 100644
--- a/arch/mips/include/asm/mach-pmcs-msp71xx/msp_regops.h
+++ b/arch/mips/include/asm/mach-pmcs-msp71xx/msp_regops.h
@@ -85,8 +85,8 @@ static inline void set_value_reg32(volatile u32 *const addr,
 	"	"__beqz"%0, 1b				\n"
 	"	nop					\n"
 	"	.set	pop				\n"
-	: "=&r" (temp), "=" GCC_OFF12_ASM() (*addr)
-	: "ir" (~mask), "ir" (value), GCC_OFF12_ASM() (*addr));
+	: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*addr)
+	: "ir" (~mask), "ir" (value), GCC_OFF_SMALL_ASM() (*addr));
 }
 
 /*
@@ -106,8 +106,8 @@ static inline void set_reg32(volatile u32 *const addr,
 	"	"__beqz"%0, 1b				\n"
 	"	nop					\n"
 	"	.set	pop				\n"
-	: "=&r" (temp), "=" GCC_OFF12_ASM() (*addr)
-	: "ir" (mask), GCC_OFF12_ASM() (*addr));
+	: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*addr)
+	: "ir" (mask), GCC_OFF_SMALL_ASM() (*addr));
 }
 
 /*
@@ -127,8 +127,8 @@ static inline void clear_reg32(volatile u32 *const addr,
 	"	"__beqz"%0, 1b				\n"
 	"	nop					\n"
 	"	.set	pop				\n"
-	: "=&r" (temp), "=" GCC_OFF12_ASM() (*addr)
-	: "ir" (~mask), GCC_OFF12_ASM() (*addr));
+	: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*addr)
+	: "ir" (~mask), GCC_OFF_SMALL_ASM() (*addr));
 }
 
 /*
@@ -148,8 +148,8 @@ static inline void toggle_reg32(volatile u32 *const addr,
 	"	"__beqz"%0, 1b				\n"
 	"	nop					\n"
 	"	.set	pop				\n"
-	: "=&r" (temp), "=" GCC_OFF12_ASM() (*addr)
-	: "ir" (mask), GCC_OFF12_ASM() (*addr));
+	: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*addr)
+	: "ir" (mask), GCC_OFF_SMALL_ASM() (*addr));
 }
 
 /*
@@ -220,8 +220,8 @@ static inline u32 blocking_read_reg32(volatile u32 *const addr)
 	"	.set	arch=r4000			\n"	\
 	"1:	ll	%0, %1	#custom_read_reg32	\n"	\
 	"	.set	pop				\n"	\
-	: "=r" (tmp), "=" GCC_OFF12_ASM() (*address)		\
-	: GCC_OFF12_ASM() (*address))
+	: "=r" (tmp), "=" GCC_OFF_SMALL_ASM() (*address)		\
+	: GCC_OFF_SMALL_ASM() (*address))
 
 #define custom_write_reg32(address, tmp)			\
 	__asm__ __volatile__(					\
@@ -231,7 +231,7 @@ static inline u32 blocking_read_reg32(volatile u32 *const addr)
 	"	"__beqz"%0, 1b				\n"	\
 	"	nop					\n"	\
 	"	.set	pop				\n"	\
-	: "=&r" (tmp), "=" GCC_OFF12_ASM() (*address)		\
-	: "0" (tmp), GCC_OFF12_ASM() (*address))
+	: "=&r" (tmp), "=" GCC_OFF_SMALL_ASM() (*address)		\
+	: "0" (tmp), GCC_OFF_SMALL_ASM() (*address))
 
 #endif	/* __ASM_REGOPS_H__ */
diff --git a/arch/mips/include/asm/mips-r2-to-r6-emul.h b/arch/mips/include/asm/mips-r2-to-r6-emul.h
new file mode 100644
index 00000000000..60570f2c3ba
--- /dev/null
+++ b/arch/mips/include/asm/mips-r2-to-r6-emul.h
@@ -0,0 +1,96 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2014 Imagination Technologies Ltd.
+ * Author: Markos Chandras <markos.chandras@imgtec.com>
+ */
+
+#ifndef __ASM_MIPS_R2_TO_R6_EMUL_H
+#define __ASM_MIPS_R2_TO_R6_EMUL_H
+
+struct mips_r2_emulator_stats {
+	u64 movs;
+	u64 hilo;
+	u64 muls;
+	u64 divs;
+	u64 dsps;
+	u64 bops;
+	u64 traps;
+	u64 fpus;
+	u64 loads;
+	u64 stores;
+	u64 llsc;
+	u64 dsemul;
+};
+
+struct mips_r2br_emulator_stats {
+	u64 jrs;
+	u64 bltzl;
+	u64 bgezl;
+	u64 bltzll;
+	u64 bgezll;
+	u64 bltzall;
+	u64 bgezall;
+	u64 bltzal;
+	u64 bgezal;
+	u64 beql;
+	u64 bnel;
+	u64 blezl;
+	u64 bgtzl;
+};
+
+#ifdef CONFIG_DEBUG_FS
+
+#define MIPS_R2_STATS(M)						\
+do {									\
+	u32 nir;							\
+	int err;							\
+									\
+	preempt_disable();						\
+	__this_cpu_inc(mipsr2emustats.M);				\
+	err = __get_user(nir, (u32 __user *)regs->cp0_epc);		\
+	if (!err) {							\
+		if (nir == BREAK_MATH)					\
+			__this_cpu_inc(mipsr2bdemustats.M);		\
+	}								\
+	preempt_enable();						\
+} while (0)
+
+#define MIPS_R2BR_STATS(M)					\
+do {								\
+	preempt_disable();					\
+	__this_cpu_inc(mipsr2bremustats.M);			\
+	preempt_enable();					\
+} while (0)
+
+#else
+
+#define MIPS_R2_STATS(M)          do { } while (0)
+#define MIPS_R2BR_STATS(M)        do { } while (0)
+
+#endif /* CONFIG_DEBUG_FS */
+
+struct r2_decoder_table {
+	u32     mask;
+	u32     code;
+	int     (*func)(struct pt_regs *regs, u32 inst);
+};
+
+
+extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
+			  const char *str);
+
+#ifndef CONFIG_MIPSR2_TO_R6_EMULATOR
+static int mipsr2_emulation;
+static __maybe_unused int mipsr2_decoder(struct pt_regs *regs, u32 inst) { return 0; };
+#else
+/* MIPS R2 Emulator ON/OFF */
+extern int mipsr2_emulation;
+extern int mipsr2_decoder(struct pt_regs *regs, u32 inst);
+#endif /* CONFIG_MIPSR2_TO_R6_EMULATOR */
+
+#define NO_R6EMU	(cpu_has_mips_r6 && !mipsr2_emulation)
+
+#endif /* __ASM_MIPS_R2_TO_R6_EMUL_H */
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 5b720d8c274..fef00443409 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_LLB		(_ULCAST_(1) << 4)
 #define MIPS_CONF5_MVH		(_ULCAST_(1) << 5)
 #define MIPS_CONF5_FRE		(_ULCAST_(1) << 8)
 #define MIPS_CONF5_UFE		(_ULCAST_(1) << 9)
@@ -1127,6 +1128,8 @@ do {									\
 #define write_c0_config6(val)	__write_32bit_c0_register($16, 6, val)
 #define write_c0_config7(val)	__write_32bit_c0_register($16, 7, val)
 
+#define read_c0_lladdr()	__read_ulong_c0_register($17, 0)
+#define write_c0_lladdr(val)	__write_ulong_c0_register($17, 0, val)
 #define read_c0_maar()		__read_ulong_c0_register($17, 1)
 #define write_c0_maar(val)	__write_ulong_c0_register($17, 1, val)
 #define read_c0_maari()		__read_32bit_c0_register($17, 2)
@@ -1909,6 +1912,7 @@ __BUILD_SET_C0(config5)
 __BUILD_SET_C0(intcontrol)
 __BUILD_SET_C0(intctl)
 __BUILD_SET_C0(srsmap)
+__BUILD_SET_C0(pagegrain)
 __BUILD_SET_C0(brcm_config_0)
 __BUILD_SET_C0(brcm_bus_pll)
 __BUILD_SET_C0(brcm_reset)
diff --git a/arch/mips/include/asm/mmu.h b/arch/mips/include/asm/mmu.h
index c436138945a..1afa1f986df 100644
--- a/arch/mips/include/asm/mmu.h
+++ b/arch/mips/include/asm/mmu.h
@@ -1,9 +1,12 @@
 #ifndef __ASM_MMU_H
 #define __ASM_MMU_H
 
+#include <linux/atomic.h>
+
 typedef struct {
 	unsigned long asid[NR_CPUS];
 	void *vdso;
+	atomic_t fp_mode_switching;
 } mm_context_t;
 
 #endif /* __ASM_MMU_H */
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index 2f82568a3ee..45914b59824 100644
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -25,7 +25,6 @@ do {									\
 	if (cpu_has_htw) {						\
 		write_c0_pwbase(pgd);					\
 		back_to_back_c0_hazard();				\
-		htw_reset();						\
 	}								\
 } while (0)
 
@@ -132,6 +131,8 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 	for_each_possible_cpu(i)
 		cpu_context(i, mm) = 0;
 
+	atomic_set(&mm->context.fp_mode_switching, 0);
+
 	return 0;
 }
 
@@ -142,6 +143,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	unsigned long flags;
 	local_irq_save(flags);
 
+	htw_stop();
 	/* Check if our ASID is of an older version and thus invalid */
 	if ((cpu_context(cpu, next) ^ asid_cache(cpu)) & ASID_VERSION_MASK)
 		get_new_mmu_context(next, cpu);
@@ -154,6 +156,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	 */
 	cpumask_clear_cpu(cpu, mm_cpumask(prev));
 	cpumask_set_cpu(cpu, mm_cpumask(next));
+	htw_start();
 
 	local_irq_restore(flags);
 }
@@ -180,6 +183,7 @@ activate_mm(struct mm_struct *prev, struct mm_struct *next)
 
 	local_irq_save(flags);
 
+	htw_stop();
 	/* Unconditionally get a new ASID.  */
 	get_new_mmu_context(next, cpu);
 
@@ -189,6 +193,7 @@ activate_mm(struct mm_struct *prev, struct mm_struct *next)
 	/* mark mmu ownership change */
 	cpumask_clear_cpu(cpu, mm_cpumask(prev));
 	cpumask_set_cpu(cpu, mm_cpumask(next));
+	htw_start();
 
 	local_irq_restore(flags);
 }
@@ -203,6 +208,7 @@ drop_mmu_context(struct mm_struct *mm, unsigned cpu)
 	unsigned long flags;
 
 	local_irq_save(flags);
+	htw_stop();
 
 	if (cpumask_test_cpu(cpu, mm_cpumask(mm)))  {
 		get_new_mmu_context(mm, cpu);
@@ -211,6 +217,7 @@ drop_mmu_context(struct mm_struct *mm, unsigned cpu)
 		/* will get a new context next time */
 		cpu_context(cpu, mm) = 0;
 	}
+	htw_start();
 	local_irq_restore(flags);
 }
 
diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h
index 800fe578dc9..0aaf9a01ea5 100644
--- a/arch/mips/include/asm/module.h
+++ b/arch/mips/include/asm/module.h
@@ -88,10 +88,14 @@ search_module_dbetables(unsigned long addr)
 #define MODULE_PROC_FAMILY "MIPS32_R1 "
 #elif defined CONFIG_CPU_MIPS32_R2
 #define MODULE_PROC_FAMILY "MIPS32_R2 "
+#elif defined CONFIG_CPU_MIPS32_R6
+#define MODULE_PROC_FAMILY "MIPS32_R6 "
 #elif defined CONFIG_CPU_MIPS64_R1
 #define MODULE_PROC_FAMILY "MIPS64_R1 "
 #elif defined CONFIG_CPU_MIPS64_R2
 #define MODULE_PROC_FAMILY "MIPS64_R2 "
+#elif defined CONFIG_CPU_MIPS64_R6
+#define MODULE_PROC_FAMILY "MIPS64_R6 "
 #elif defined CONFIG_CPU_R3000
 #define MODULE_PROC_FAMILY "R3000 "
 #elif defined CONFIG_CPU_TX39XX
diff --git a/arch/mips/include/asm/octeon/cvmx-cmd-queue.h b/arch/mips/include/asm/octeon/cvmx-cmd-queue.h
index 75739c83f07..8d05d906982 100644
--- a/arch/mips/include/asm/octeon/cvmx-cmd-queue.h
+++ b/arch/mips/include/asm/octeon/cvmx-cmd-queue.h
@@ -275,7 +275,7 @@ static inline void __cvmx_cmd_queue_lock(cvmx_cmd_queue_id_t queue_id,
 		" lbu	%[ticket], %[now_serving]\n"
 		"4:\n"
 		".set pop\n" :
-		[ticket_ptr] "=" GCC_OFF12_ASM()(__cvmx_cmd_queue_state_ptr->ticket[__cvmx_cmd_queue_get_index(queue_id)]),
+		[ticket_ptr] "=" GCC_OFF_SMALL_ASM()(__cvmx_cmd_queue_state_ptr->ticket[__cvmx_cmd_queue_get_index(queue_id)]),
 		[now_serving] "=m"(qptr->now_serving), [ticket] "=r"(tmp),
 		[my_ticket] "=r"(my_ticket)
 	    );
diff --git a/arch/mips/include/asm/octeon/cvmx-rst-defs.h b/arch/mips/include/asm/octeon/cvmx-rst-defs.h
new file mode 100644
index 00000000000..0c9c3e74d4a
--- /dev/null
+++ b/arch/mips/include/asm/octeon/cvmx-rst-defs.h
@@ -0,0 +1,306 @@
+/***********************license start***************
+ * Author: Cavium Inc.
+ *
+ * Contact: support@cavium.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2014 Cavium Inc.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Inc. for more information
+ ***********************license end**************************************/
+
+#ifndef __CVMX_RST_DEFS_H__
+#define __CVMX_RST_DEFS_H__
+
+#define CVMX_RST_BOOT (CVMX_ADD_IO_SEG(0x0001180006001600ull))
+#define CVMX_RST_CFG (CVMX_ADD_IO_SEG(0x0001180006001610ull))
+#define CVMX_RST_CKILL (CVMX_ADD_IO_SEG(0x0001180006001638ull))
+#define CVMX_RST_CTLX(offset) (CVMX_ADD_IO_SEG(0x0001180006001640ull) + ((offset) & 3) * 8)
+#define CVMX_RST_DELAY (CVMX_ADD_IO_SEG(0x0001180006001608ull))
+#define CVMX_RST_ECO (CVMX_ADD_IO_SEG(0x00011800060017B8ull))
+#define CVMX_RST_INT (CVMX_ADD_IO_SEG(0x0001180006001628ull))
+#define CVMX_RST_OCX (CVMX_ADD_IO_SEG(0x0001180006001618ull))
+#define CVMX_RST_POWER_DBG (CVMX_ADD_IO_SEG(0x0001180006001708ull))
+#define CVMX_RST_PP_POWER (CVMX_ADD_IO_SEG(0x0001180006001700ull))
+#define CVMX_RST_SOFT_PRSTX(offset) (CVMX_ADD_IO_SEG(0x00011800060016C0ull) + ((offset) & 3) * 8)
+#define CVMX_RST_SOFT_RST (CVMX_ADD_IO_SEG(0x0001180006001680ull))
+
+union cvmx_rst_boot {
+	uint64_t u64;
+	struct cvmx_rst_boot_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t chipkill:1;
+		uint64_t jtcsrdis:1;
+		uint64_t ejtagdis:1;
+		uint64_t romen:1;
+		uint64_t ckill_ppdis:1;
+		uint64_t jt_tstmode:1;
+		uint64_t vrm_err:1;
+		uint64_t reserved_37_56:20;
+		uint64_t c_mul:7;
+		uint64_t pnr_mul:6;
+		uint64_t reserved_21_23:3;
+		uint64_t lboot_oci:3;
+		uint64_t lboot_ext:6;
+		uint64_t lboot:10;
+		uint64_t rboot:1;
+		uint64_t rboot_pin:1;
+#else
+		uint64_t rboot_pin:1;
+		uint64_t rboot:1;
+		uint64_t lboot:10;
+		uint64_t lboot_ext:6;
+		uint64_t lboot_oci:3;
+		uint64_t reserved_21_23:3;
+		uint64_t pnr_mul:6;
+		uint64_t c_mul:7;
+		uint64_t reserved_37_56:20;
+		uint64_t vrm_err:1;
+		uint64_t jt_tstmode:1;
+		uint64_t ckill_ppdis:1;
+		uint64_t romen:1;
+		uint64_t ejtagdis:1;
+		uint64_t jtcsrdis:1;
+		uint64_t chipkill:1;
+#endif
+	} s;
+	struct cvmx_rst_boot_s cn70xx;
+	struct cvmx_rst_boot_s cn70xxp1;
+	struct cvmx_rst_boot_s cn78xx;
+};
+
+union cvmx_rst_cfg {
+	uint64_t u64;
+	struct cvmx_rst_cfg_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t bist_delay:58;
+		uint64_t reserved_3_5:3;
+		uint64_t cntl_clr_bist:1;
+		uint64_t warm_clr_bist:1;
+		uint64_t soft_clr_bist:1;
+#else
+		uint64_t soft_clr_bist:1;
+		uint64_t warm_clr_bist:1;
+		uint64_t cntl_clr_bist:1;
+		uint64_t reserved_3_5:3;
+		uint64_t bist_delay:58;
+#endif
+	} s;
+	struct cvmx_rst_cfg_s cn70xx;
+	struct cvmx_rst_cfg_s cn70xxp1;
+	struct cvmx_rst_cfg_s cn78xx;
+};
+
+union cvmx_rst_ckill {
+	uint64_t u64;
+	struct cvmx_rst_ckill_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_47_63:17;
+		uint64_t timer:47;
+#else
+		uint64_t timer:47;
+		uint64_t reserved_47_63:17;
+#endif
+	} s;
+	struct cvmx_rst_ckill_s cn70xx;
+	struct cvmx_rst_ckill_s cn70xxp1;
+	struct cvmx_rst_ckill_s cn78xx;
+};
+
+union cvmx_rst_ctlx {
+	uint64_t u64;
+	struct cvmx_rst_ctlx_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_10_63:54;
+		uint64_t prst_link:1;
+		uint64_t rst_done:1;
+		uint64_t rst_link:1;
+		uint64_t host_mode:1;
+		uint64_t reserved_4_5:2;
+		uint64_t rst_drv:1;
+		uint64_t rst_rcv:1;
+		uint64_t rst_chip:1;
+		uint64_t rst_val:1;
+#else
+		uint64_t rst_val:1;
+		uint64_t rst_chip:1;
+		uint64_t rst_rcv:1;
+		uint64_t rst_drv:1;
+		uint64_t reserved_4_5:2;
+		uint64_t host_mode:1;
+		uint64_t rst_link:1;
+		uint64_t rst_done:1;
+		uint64_t prst_link:1;
+		uint64_t reserved_10_63:54;
+#endif
+	} s;
+	struct cvmx_rst_ctlx_s cn70xx;
+	struct cvmx_rst_ctlx_s cn70xxp1;
+	struct cvmx_rst_ctlx_s cn78xx;
+};
+
+union cvmx_rst_delay {
+	uint64_t u64;
+	struct cvmx_rst_delay_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_32_63:32;
+		uint64_t warm_rst_dly:16;
+		uint64_t soft_rst_dly:16;
+#else
+		uint64_t soft_rst_dly:16;
+		uint64_t warm_rst_dly:16;
+		uint64_t reserved_32_63:32;
+#endif
+	} s;
+	struct cvmx_rst_delay_s cn70xx;
+	struct cvmx_rst_delay_s cn70xxp1;
+	struct cvmx_rst_delay_s cn78xx;
+};
+
+union cvmx_rst_eco {
+	uint64_t u64;
+	struct cvmx_rst_eco_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_32_63:32;
+		uint64_t eco_rw:32;
+#else
+		uint64_t eco_rw:32;
+		uint64_t reserved_32_63:32;
+#endif
+	} s;
+	struct cvmx_rst_eco_s cn78xx;
+};
+
+union cvmx_rst_int {
+	uint64_t u64;
+	struct cvmx_rst_int_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_12_63:52;
+		uint64_t perst:4;
+		uint64_t reserved_4_7:4;
+		uint64_t rst_link:4;
+#else
+		uint64_t rst_link:4;
+		uint64_t reserved_4_7:4;
+		uint64_t perst:4;
+		uint64_t reserved_12_63:52;
+#endif
+	} s;
+	struct cvmx_rst_int_cn70xx {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_11_63:53;
+		uint64_t perst:3;
+		uint64_t reserved_3_7:5;
+		uint64_t rst_link:3;
+#else
+		uint64_t rst_link:3;
+		uint64_t reserved_3_7:5;
+		uint64_t perst:3;
+		uint64_t reserved_11_63:53;
+#endif
+	} cn70xx;
+	struct cvmx_rst_int_cn70xx cn70xxp1;
+	struct cvmx_rst_int_s cn78xx;
+};
+
+union cvmx_rst_ocx {
+	uint64_t u64;
+	struct cvmx_rst_ocx_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_3_63:61;
+		uint64_t rst_link:3;
+#else
+		uint64_t rst_link:3;
+		uint64_t reserved_3_63:61;
+#endif
+	} s;
+	struct cvmx_rst_ocx_s cn78xx;
+};
+
+union cvmx_rst_power_dbg {
+	uint64_t u64;
+	struct cvmx_rst_power_dbg_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_3_63:61;
+		uint64_t str:3;
+#else
+		uint64_t str:3;
+		uint64_t reserved_3_63:61;
+#endif
+	} s;
+	struct cvmx_rst_power_dbg_s cn78xx;
+};
+
+union cvmx_rst_pp_power {
+	uint64_t u64;
+	struct cvmx_rst_pp_power_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_48_63:16;
+		uint64_t gate:48;
+#else
+		uint64_t gate:48;
+		uint64_t reserved_48_63:16;
+#endif
+	} s;
+	struct cvmx_rst_pp_power_cn70xx {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_4_63:60;
+		uint64_t gate:4;
+#else
+		uint64_t gate:4;
+		uint64_t reserved_4_63:60;
+#endif
+	} cn70xx;
+	struct cvmx_rst_pp_power_cn70xx cn70xxp1;
+	struct cvmx_rst_pp_power_s cn78xx;
+};
+
+union cvmx_rst_soft_prstx {
+	uint64_t u64;
+	struct cvmx_rst_soft_prstx_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_1_63:63;
+		uint64_t soft_prst:1;
+#else
+		uint64_t soft_prst:1;
+		uint64_t reserved_1_63:63;
+#endif
+	} s;
+	struct cvmx_rst_soft_prstx_s cn70xx;
+	struct cvmx_rst_soft_prstx_s cn70xxp1;
+	struct cvmx_rst_soft_prstx_s cn78xx;
+};
+
+union cvmx_rst_soft_rst {
+	uint64_t u64;
+	struct cvmx_rst_soft_rst_s {
+#ifdef __BIG_ENDIAN_BITFIELD
+		uint64_t reserved_1_63:63;
+		uint64_t soft_rst:1;
+#else
+		uint64_t soft_rst:1;
+		uint64_t reserved_1_63:63;
+#endif
+	} s;
+	struct cvmx_rst_soft_rst_s cn70xx;
+	struct cvmx_rst_soft_rst_s cn70xxp1;
+	struct cvmx_rst_soft_rst_s cn78xx;
+};
+
+#endif
diff --git a/arch/mips/include/asm/octeon/octeon-model.h b/arch/mips/include/asm/octeon/octeon-model.h
index e8a1c2fd52c..92b377e36da 100644
--- a/arch/mips/include/asm/octeon/octeon-model.h
+++ b/arch/mips/include/asm/octeon/octeon-model.h
@@ -45,6 +45,7 @@
  */
 
 #define OCTEON_FAMILY_MASK	0x00ffff00
+#define OCTEON_PRID_MASK	0x00ffffff
 
 /* Flag bits in top byte */
 /* Ignores revision in model checks */
@@ -63,11 +64,52 @@
 #define OM_MATCH_6XXX_FAMILY_MODELS	0x40000000
 /* Match all cnf7XXX Octeon models. */
 #define OM_MATCH_F7XXX_FAMILY_MODELS	0x80000000
+/* Match all cn7XXX Octeon models. */
+#define OM_MATCH_7XXX_FAMILY_MODELS     0x10000000
+#define OM_MATCH_FAMILY_MODELS		(OM_MATCH_5XXX_FAMILY_MODELS |	\
+					 OM_MATCH_6XXX_FAMILY_MODELS |	\
+					 OM_MATCH_F7XXX_FAMILY_MODELS | \
+					 OM_MATCH_7XXX_FAMILY_MODELS)
+/*
+ * CN7XXX models with new revision encoding
+ */
+
+#define OCTEON_CN73XX_PASS1_0	0x000d9700
+#define OCTEON_CN73XX		(OCTEON_CN73XX_PASS1_0 | OM_IGNORE_REVISION)
+#define OCTEON_CN73XX_PASS1_X	(OCTEON_CN73XX_PASS1_0 | \
+				 OM_IGNORE_MINOR_REVISION)
+
+#define OCTEON_CN70XX_PASS1_0	0x000d9600
+#define OCTEON_CN70XX_PASS1_1	0x000d9601
+#define OCTEON_CN70XX_PASS1_2	0x000d9602
+
+#define OCTEON_CN70XX_PASS2_0	0x000d9608
+
+#define OCTEON_CN70XX		(OCTEON_CN70XX_PASS1_0 | OM_IGNORE_REVISION)
+#define OCTEON_CN70XX_PASS1_X	(OCTEON_CN70XX_PASS1_0 | \
+				 OM_IGNORE_MINOR_REVISION)
+#define OCTEON_CN70XX_PASS2_X	(OCTEON_CN70XX_PASS2_0 | \
+				 OM_IGNORE_MINOR_REVISION)
+
+#define OCTEON_CN71XX		OCTEON_CN70XX
+
+#define OCTEON_CN78XX_PASS1_0	0x000d9500
+#define OCTEON_CN78XX_PASS1_1	0x000d9501
+#define OCTEON_CN78XX_PASS2_0	0x000d9508
+
+#define OCTEON_CN78XX		(OCTEON_CN78XX_PASS1_0 | OM_IGNORE_REVISION)
+#define OCTEON_CN78XX_PASS1_X	(OCTEON_CN78XX_PASS1_0 | \
+				 OM_IGNORE_MINOR_REVISION)
+#define OCTEON_CN78XX_PASS2_X	(OCTEON_CN78XX_PASS2_0 | \
+				 OM_IGNORE_MINOR_REVISION)
+
+#define OCTEON_CN76XX		(0x000d9540 | OM_CHECK_SUBMODEL)
 
 /*
  * CNF7XXX models with new revision encoding
  */
 #define OCTEON_CNF71XX_PASS1_0	0x000d9400
+#define OCTEON_CNF71XX_PASS1_1  0x000d9401
 
 #define OCTEON_CNF71XX		(OCTEON_CNF71XX_PASS1_0 | OM_IGNORE_REVISION)
 #define OCTEON_CNF71XX_PASS1_X	(OCTEON_CNF71XX_PASS1_0 | OM_IGNORE_MINOR_REVISION)
@@ -79,6 +121,8 @@
 #define OCTEON_CN68XX_PASS1_1	0x000d9101
 #define OCTEON_CN68XX_PASS1_2	0x000d9102
 #define OCTEON_CN68XX_PASS2_0	0x000d9108
+#define OCTEON_CN68XX_PASS2_1   0x000d9109
+#define OCTEON_CN68XX_PASS2_2   0x000d910a
 
 #define OCTEON_CN68XX		(OCTEON_CN68XX_PASS2_0 | OM_IGNORE_REVISION)
 #define OCTEON_CN68XX_PASS1_X	(OCTEON_CN68XX_PASS1_0 | OM_IGNORE_MINOR_REVISION)
@@ -104,11 +148,18 @@
 #define OCTEON_CN63XX_PASS1_X	(OCTEON_CN63XX_PASS1_0 | OM_IGNORE_MINOR_REVISION)
 #define OCTEON_CN63XX_PASS2_X	(OCTEON_CN63XX_PASS2_0 | OM_IGNORE_MINOR_REVISION)
 
+/* CN62XX is same as CN63XX with 1 MB cache */
+#define OCTEON_CN62XX           OCTEON_CN63XX
+
 #define OCTEON_CN61XX_PASS1_0	0x000d9300
+#define OCTEON_CN61XX_PASS1_1   0x000d9301
 
 #define OCTEON_CN61XX		(OCTEON_CN61XX_PASS1_0 | OM_IGNORE_REVISION)
 #define OCTEON_CN61XX_PASS1_X	(OCTEON_CN61XX_PASS1_0 | OM_IGNORE_MINOR_REVISION)
 
+/* CN60XX is same as CN61XX with 512 KB cache */
+#define OCTEON_CN60XX           OCTEON_CN61XX
+
 /*
  * CN5XXX models with new revision encoding
  */
@@ -120,7 +171,7 @@
 #define OCTEON_CN58XX_PASS2_2	0x000d030a
 #define OCTEON_CN58XX_PASS2_3	0x000d030b
 
-#define OCTEON_CN58XX		(OCTEON_CN58XX_PASS1_0 | OM_IGNORE_REVISION)
+#define OCTEON_CN58XX		(OCTEON_CN58XX_PASS2_0 | OM_IGNORE_REVISION)
 #define OCTEON_CN58XX_PASS1_X	(OCTEON_CN58XX_PASS1_0 | OM_IGNORE_MINOR_REVISION)
 #define OCTEON_CN58XX_PASS2_X	(OCTEON_CN58XX_PASS2_0 | OM_IGNORE_MINOR_REVISION)
 #define OCTEON_CN58XX_PASS1	OCTEON_CN58XX_PASS1_X
@@ -217,12 +268,10 @@
 #define OCTEON_CN3XXX		(OCTEON_CN58XX_PASS1_0 | OM_MATCH_PREVIOUS_MODELS | OM_IGNORE_REVISION)
 #define OCTEON_CN5XXX		(OCTEON_CN58XX_PASS1_0 | OM_MATCH_5XXX_FAMILY_MODELS)
 #define OCTEON_CN6XXX		(OCTEON_CN63XX_PASS1_0 | OM_MATCH_6XXX_FAMILY_MODELS)
-
-/* These are used to cover entire families of OCTEON processors */
-#define OCTEON_FAM_1		(OCTEON_CN3XXX)
-#define OCTEON_FAM_PLUS		(OCTEON_CN5XXX)
-#define OCTEON_FAM_1_PLUS	(OCTEON_FAM_PLUS | OM_MATCH_PREVIOUS_MODELS)
-#define OCTEON_FAM_2		(OCTEON_CN6XXX)
+#define OCTEON_CNF7XXX		(OCTEON_CNF71XX_PASS1_0 | \
+				 OM_MATCH_F7XXX_FAMILY_MODELS)
+#define OCTEON_CN7XXX		(OCTEON_CN78XX_PASS1_0 | \
+				 OM_MATCH_7XXX_FAMILY_MODELS)
 
 /* The revision byte (low byte) has two different encodings.
  * CN3XXX:
@@ -232,7 +281,7 @@
  *     <4>:   alternate package
  *     <3:0>: revision
  *
- * CN5XXX:
+ * CN5XXX and older models:
  *
  *     bits
  *     <7>:   reserved (0)
@@ -251,17 +300,21 @@
 /* CN5XXX and later use different layout of bits in the revision ID field */
 #define OCTEON_58XX_FAMILY_MASK	     OCTEON_38XX_FAMILY_MASK
 #define OCTEON_58XX_FAMILY_REV_MASK  0x00ffff3f
-#define OCTEON_58XX_MODEL_MASK	     0x00ffffc0
+#define OCTEON_58XX_MODEL_MASK	     0x00ffff40
 #define OCTEON_58XX_MODEL_REV_MASK   (OCTEON_58XX_FAMILY_REV_MASK | OCTEON_58XX_MODEL_MASK)
-#define OCTEON_58XX_MODEL_MINOR_REV_MASK (OCTEON_58XX_MODEL_REV_MASK & 0x00fffff8)
+#define OCTEON_58XX_MODEL_MINOR_REV_MASK (OCTEON_58XX_MODEL_REV_MASK & 0x00ffff38)
 #define OCTEON_5XXX_MODEL_MASK	     0x00ff0fc0
 
-/* forward declarations */
 static inline uint32_t cvmx_get_proc_id(void) __attribute__ ((pure));
 static inline uint64_t cvmx_read_csr(uint64_t csr_addr);
 
 #define __OCTEON_MATCH_MASK__(x, y, z) (((x) & (z)) == ((y) & (z)))
 
+/*
+ * __OCTEON_IS_MODEL_COMPILE__(arg_model, chip_model)
+ * returns true if chip_model is identical or belong to the OCTEON
+ * model group specified in arg_model.
+ */
 /* NOTE: This for internal use only! */
 #define __OCTEON_IS_MODEL_COMPILE__(arg_model, chip_model)		\
 ((((arg_model & OCTEON_38XX_FAMILY_MASK) < OCTEON_CN58XX_PASS1_0)  && ( \
@@ -286,11 +339,18 @@ static inline uint64_t cvmx_read_csr(uint64_t csr_addr);
 		((((arg_model) & (OM_FLAG_MASK)) == OM_IGNORE_REVISION) \
 			&& __OCTEON_MATCH_MASK__((chip_model), (arg_model), OCTEON_58XX_FAMILY_MASK)) || \
 		((((arg_model) & (OM_FLAG_MASK)) == OM_CHECK_SUBMODEL)	\
-			&& __OCTEON_MATCH_MASK__((chip_model), (arg_model), OCTEON_58XX_MODEL_REV_MASK)) || \
+			&& __OCTEON_MATCH_MASK__((chip_model), (arg_model), OCTEON_58XX_MODEL_MASK)) || \
 		((((arg_model) & (OM_MATCH_5XXX_FAMILY_MODELS)) == OM_MATCH_5XXX_FAMILY_MODELS) \
-			&& ((chip_model) >= OCTEON_CN58XX_PASS1_0) && ((chip_model) < OCTEON_CN63XX_PASS1_0)) || \
+			&& ((chip_model & OCTEON_PRID_MASK) >= OCTEON_CN58XX_PASS1_0) \
+			&& ((chip_model & OCTEON_PRID_MASK) < OCTEON_CN63XX_PASS1_0)) || \
 		((((arg_model) & (OM_MATCH_6XXX_FAMILY_MODELS)) == OM_MATCH_6XXX_FAMILY_MODELS) \
-			&& ((chip_model) >= OCTEON_CN63XX_PASS1_0)) ||	\
+			&& ((chip_model & OCTEON_PRID_MASK) >= OCTEON_CN63XX_PASS1_0) \
+			&& ((chip_model & OCTEON_PRID_MASK) < OCTEON_CNF71XX_PASS1_0)) || \
+		((((arg_model) & (OM_MATCH_F7XXX_FAMILY_MODELS)) == OM_MATCH_F7XXX_FAMILY_MODELS) \
+			&& ((chip_model & OCTEON_PRID_MASK) >= OCTEON_CNF71XX_PASS1_0) \
+			&& ((chip_model & OCTEON_PRID_MASK) < OCTEON_CN78XX_PASS1_0)) || \
+		((((arg_model) & (OM_MATCH_7XXX_FAMILY_MODELS)) == OM_MATCH_7XXX_FAMILY_MODELS) \
+			&& ((chip_model & OCTEON_PRID_MASK) >= OCTEON_CN78XX_PASS1_0)) || \
 		((((arg_model) & (OM_MATCH_PREVIOUS_MODELS)) == OM_MATCH_PREVIOUS_MODELS) \
 			&& (((chip_model) & OCTEON_58XX_MODEL_MASK) < ((arg_model) & OCTEON_58XX_MODEL_MASK))) \
 		)))
@@ -300,14 +360,6 @@ static inline int __octeon_is_model_runtime__(uint32_t model)
 {
 	uint32_t cpuid = cvmx_get_proc_id();
 
-	/*
-	 * Check for special case of mismarked 3005 samples. We only
-	 * need to check if the sub model isn't being ignored
-	 */
-	if ((model & OM_CHECK_SUBMODEL) == OM_CHECK_SUBMODEL) {
-		if (cpuid == OCTEON_CN3010_PASS1 && (cvmx_read_csr(0x80011800800007B8ull) & (1ull << 34)))
-			cpuid |= 0x10;
-	}
 	return __OCTEON_IS_MODEL_COMPILE__(model, cpuid);
 }
 
@@ -326,10 +378,21 @@ static inline int __octeon_is_model_runtime__(uint32_t model)
 #define OCTEON_IS_COMMON_BINARY() 1
 #undef OCTEON_MODEL
 
+#define OCTEON_IS_OCTEON1()	OCTEON_IS_MODEL(OCTEON_CN3XXX)
+#define OCTEON_IS_OCTEONPLUS()	OCTEON_IS_MODEL(OCTEON_CN5XXX)
+#define OCTEON_IS_OCTEON2()						\
+	(OCTEON_IS_MODEL(OCTEON_CN6XXX) || OCTEON_IS_MODEL(OCTEON_CNF71XX))
+
+#define OCTEON_IS_OCTEON3()	OCTEON_IS_MODEL(OCTEON_CN7XXX)
+
+#define OCTEON_IS_OCTEON1PLUS()	(OCTEON_IS_OCTEON1() || OCTEON_IS_OCTEONPLUS())
+
 const char *__init octeon_model_get_string(uint32_t chip_id);
 
 /*
  * Return the octeon family, i.e., ProcessorID of the PrID register.
+ *
+ * @return the octeon family on success, ((unint32_t)-1) on error.
  */
 static inline uint32_t cvmx_get_octeon_family(void)
 {
diff --git a/arch/mips/include/asm/octeon/octeon.h b/arch/mips/include/asm/octeon/octeon.h
index 6dfefd2d5cd..04159657085 100644
--- a/arch/mips/include/asm/octeon/octeon.h
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -9,6 +9,7 @@
 #define __ASM_OCTEON_OCTEON_H
 
 #include <asm/octeon/cvmx.h>
+#include <asm/bitfield.h>
 
 extern uint64_t octeon_bootmem_alloc_range_phys(uint64_t size,
 						uint64_t alignment,
@@ -53,6 +54,7 @@ extern void octeon_io_clk_delay(unsigned long);
 #define OCTOEN_SERIAL_LEN	20
 
 struct octeon_boot_descriptor {
+#ifdef __BIG_ENDIAN_BITFIELD
 	/* Start of block referenced by assembly code - do not change! */
 	uint32_t desc_version;
 	uint32_t desc_size;
@@ -104,77 +106,149 @@ struct octeon_boot_descriptor {
 	uint8_t mac_addr_base[6];
 	uint8_t mac_addr_count;
 	uint64_t cvmx_desc_vaddr;
+#else
+	uint32_t desc_size;
+	uint32_t desc_version;
+	uint64_t stack_top;
+	uint64_t heap_base;
+	uint64_t heap_end;
+	/* Only used by bootloader */
+	uint64_t entry_point;
+	uint64_t desc_vaddr;
+	/* End of This block referenced by assembly code - do not change! */
+	uint32_t stack_size;
+	uint32_t exception_base_addr;
+	uint32_t argc;
+	uint32_t heap_size;
+	/*
+	 * Argc count for application.
+	 * Warning low bit scrambled in little-endian.
+	 */
+	uint32_t argv[OCTEON_ARGV_MAX_ARGS];
+
+#define  BOOT_FLAG_INIT_CORE		(1 << 0)
+#define  OCTEON_BL_FLAG_DEBUG		(1 << 1)
+#define  OCTEON_BL_FLAG_NO_MAGIC	(1 << 2)
+	/* If set, use uart1 for console */
+#define  OCTEON_BL_FLAG_CONSOLE_UART1	(1 << 3)
+	/* If set, use PCI console */
+#define  OCTEON_BL_FLAG_CONSOLE_PCI	(1 << 4)
+	/* Call exit on break on serial port */
+#define  OCTEON_BL_FLAG_BREAK		(1 << 5)
+
+	uint32_t core_mask;
+	uint32_t flags;
+	/* physical address of free memory descriptor block. */
+	uint32_t phy_mem_desc_addr;
+	/* DRAM size in megabyes. */
+	uint32_t dram_size;
+	/* CPU clock speed, in hz. */
+	uint32_t eclock_hz;
+	/* used to pass flags from app to debugger. */
+	uint32_t debugger_flags_base_addr;
+	/* SPI4 clock in hz. */
+	uint32_t spi_clock_hz;
+	/* DRAM clock speed, in hz. */
+	uint32_t dclock_hz;
+	uint8_t chip_rev_minor;
+	uint8_t chip_rev_major;
+	uint16_t chip_type;
+	uint8_t board_rev_minor;
+	uint8_t board_rev_major;
+	uint16_t board_type;
+
+	uint64_t unused1[4]; /* Not even filled in by bootloader. */
+
+	uint64_t cvmx_desc_vaddr;
+#endif
 };
 
 union octeon_cvmemctl {
 	uint64_t u64;
 	struct {
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t tlbbist:1;
+		__BITFIELD_FIELD(uint64_t tlbbist:1,
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t l1cbist:1;
+		__BITFIELD_FIELD(uint64_t l1cbist:1,
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t l1dbist:1;
+		__BITFIELD_FIELD(uint64_t l1dbist:1,
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t dcmbist:1;
+		__BITFIELD_FIELD(uint64_t dcmbist:1,
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t ptgbist:1;
+		__BITFIELD_FIELD(uint64_t ptgbist:1,
 		/* RO 1 = BIST fail, 0 = BIST pass */
-		uint64_t wbfbist:1;
+		__BITFIELD_FIELD(uint64_t wbfbist:1,
 		/* Reserved */
-		uint64_t reserved:22;
+		__BITFIELD_FIELD(uint64_t reserved:17,
+		/* OCTEON II - TLB replacement policy: 0 = bitmask LRU; 1 = NLU.
+		 * This field selects between the TLB replacement policies:
+		 * bitmask LRU or NLU. Bitmask LRU maintains a mask of
+		 * recently used TLB entries and avoids them as new entries
+		 * are allocated. NLU simply guarantees that the next
+		 * allocation is not the last used TLB entry. */
+		__BITFIELD_FIELD(uint64_t tlbnlu:1,
+		/* OCTEON II - Selects the bit in the counter used for
+		 * releasing a PAUSE. This counter trips every 2(8+PAUSETIME)
+		 * cycles. If not already released, the cnMIPS II core will
+		 * always release a given PAUSE instruction within
+		 * 2(8+PAUSETIME). If the counter trip happens to line up,
+		 * the cnMIPS II core may release the PAUSE instantly. */
+		__BITFIELD_FIELD(uint64_t pausetime:3,
+		/* OCTEON II - This field is an extension of
+		 * CvmMemCtl[DIDTTO] */
+		__BITFIELD_FIELD(uint64_t didtto2:1,
 		/* R/W If set, marked write-buffer entries time out
 		 * the same as as other entries; if clear, marked
 		 * write-buffer entries use the maximum timeout. */
-		uint64_t dismarkwblongto:1;
+		__BITFIELD_FIELD(uint64_t dismarkwblongto:1,
 		/* R/W If set, a merged store does not clear the
 		 * write-buffer entry timeout state. */
-		uint64_t dismrgclrwbto:1;
+		__BITFIELD_FIELD(uint64_t dismrgclrwbto:1,
 		/* R/W Two bits that are the MSBs of the resultant
 		 * CVMSEG LM word location for an IOBDMA. The other 8
 		 * bits come from the SCRADDR field of the IOBDMA. */
-		uint64_t iobdmascrmsb:2;
+		__BITFIELD_FIELD(uint64_t iobdmascrmsb:2,
 		/* R/W If set, SYNCWS and SYNCS only order marked
 		 * stores; if clear, SYNCWS and SYNCS only order
 		 * unmarked stores. SYNCWSMARKED has no effect when
 		 * DISSYNCWS is set. */
-		uint64_t syncwsmarked:1;
+		__BITFIELD_FIELD(uint64_t syncwsmarked:1,
 		/* R/W If set, SYNCWS acts as SYNCW and SYNCS acts as
 		 * SYNC. */
-		uint64_t dissyncws:1;
+		__BITFIELD_FIELD(uint64_t dissyncws:1,
 		/* R/W If set, no stall happens on write buffer
 		 * full. */
-		uint64_t diswbfst:1;
+		__BITFIELD_FIELD(uint64_t diswbfst:1,
 		/* R/W If set (and SX set), supervisor-level
 		 * loads/stores can use XKPHYS addresses with
 		 * VA<48>==0 */
-		uint64_t xkmemenas:1;
+		__BITFIELD_FIELD(uint64_t xkmemenas:1,
 		/* R/W If set (and UX set), user-level loads/stores
 		 * can use XKPHYS addresses with VA<48>==0 */
-		uint64_t xkmemenau:1;
+		__BITFIELD_FIELD(uint64_t xkmemenau:1,
 		/* R/W If set (and SX set), supervisor-level
 		 * loads/stores can use XKPHYS addresses with
 		 * VA<48>==1 */
-		uint64_t xkioenas:1;
+		__BITFIELD_FIELD(uint64_t xkioenas:1,
 		/* R/W If set (and UX set), user-level loads/stores
 		 * can use XKPHYS addresses with VA<48>==1 */
-		uint64_t xkioenau:1;
+		__BITFIELD_FIELD(uint64_t xkioenau:1,
 		/* R/W If set, all stores act as SYNCW (NOMERGE must
 		 * be set when this is set) RW, reset to 0. */
-		uint64_t allsyncw:1;
+		__BITFIELD_FIELD(uint64_t allsyncw:1,
 		/* R/W If set, no stores merge, and all stores reach
 		 * the coherent bus in order. */
-		uint64_t nomerge:1;
+		__BITFIELD_FIELD(uint64_t nomerge:1,
 		/* R/W Selects the bit in the counter used for DID
 		 * time-outs 0 = 231, 1 = 230, 2 = 229, 3 =
 		 * 214. Actual time-out is between 1x and 2x this
 		 * interval. For example, with DIDTTO=3, expiration
 		 * interval is between 16K and 32K. */
-		uint64_t didtto:2;
+		__BITFIELD_FIELD(uint64_t didtto:2,
 		/* R/W If set, the (mem) CSR clock never turns off. */
-		uint64_t csrckalwys:1;
+		__BITFIELD_FIELD(uint64_t csrckalwys:1,
 		/* R/W If set, mclk never turns off. */
-		uint64_t mclkalwys:1;
+		__BITFIELD_FIELD(uint64_t mclkalwys:1,
 		/* R/W Selects the bit in the counter used for write
 		 * buffer flush time-outs (WBFLT+11) is the bit
 		 * position in an internal counter used to determine
@@ -182,25 +256,26 @@ union octeon_cvmemctl {
 		 * 2x this interval. For example, with WBFLT = 0, a
 		 * write buffer expires between 2K and 4K cycles after
 		 * the write buffer entry is allocated. */
-		uint64_t wbfltime:3;
+		__BITFIELD_FIELD(uint64_t wbfltime:3,
 		/* R/W If set, do not put Istream in the L2 cache. */
-		uint64_t istrnol2:1;
+		__BITFIELD_FIELD(uint64_t istrnol2:1,
 		/* R/W The write buffer threshold. */
-		uint64_t wbthresh:4;
+		__BITFIELD_FIELD(uint64_t wbthresh:4,
 		/* Reserved */
-		uint64_t reserved2:2;
+		__BITFIELD_FIELD(uint64_t reserved2:2,
 		/* R/W If set, CVMSEG is available for loads/stores in
 		 * kernel/debug mode. */
-		uint64_t cvmsegenak:1;
+		__BITFIELD_FIELD(uint64_t cvmsegenak:1,
 		/* R/W If set, CVMSEG is available for loads/stores in
 		 * supervisor mode. */
-		uint64_t cvmsegenas:1;
+		__BITFIELD_FIELD(uint64_t cvmsegenas:1,
 		/* R/W If set, CVMSEG is available for loads/stores in
 		 * user mode. */
-		uint64_t cvmsegenau:1;
+		__BITFIELD_FIELD(uint64_t cvmsegenau:1,
 		/* R/W Size of local memory in cache blocks, 54 (6912
 		 * bytes) is max legal value. */
-		uint64_t lmemsz:6;
+		__BITFIELD_FIELD(uint64_t lmemsz:6,
+		;)))))))))))))))))))))))))))))))))
 	} s;
 };
 
@@ -224,6 +299,19 @@ static inline void octeon_npi_write32(uint64_t address, uint32_t val)
 	cvmx_read64_uint32(address ^ 4);
 }
 
+/* Octeon multiplier save/restore routines from octeon_switch.S */
+void octeon_mult_save(void);
+void octeon_mult_restore(void);
+void octeon_mult_save_end(void);
+void octeon_mult_restore_end(void);
+void octeon_mult_save3(void);
+void octeon_mult_save3_end(void);
+void octeon_mult_save2(void);
+void octeon_mult_save2_end(void);
+void octeon_mult_restore3(void);
+void octeon_mult_restore3_end(void);
+void octeon_mult_restore2(void);
+void octeon_mult_restore2_end(void);
 
 /**
  * Read a 32bit value from the Octeon NPI register space
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 69529624a00..193b4c6b754 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -121,6 +121,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 }
 #endif
 
+#ifdef CONFIG_PCI_DOMAINS
 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
 
 static inline int pci_proc_domain(struct pci_bus *bus)
@@ -128,6 +129,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 	struct pci_controller *hose = bus->sysdata;
 	return hose->need_domain_info;
 }
+#endif /* CONFIG_PCI_DOMAINS */
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h
index fc807aa5ec8..91747c282bb 100644
--- a/arch/mips/include/asm/pgtable-bits.h
+++ b/arch/mips/include/asm/pgtable-bits.h
@@ -35,7 +35,7 @@
 #if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32)
 
 /*
- * The following bits are directly used by the TLB hardware
+ * The following bits are implemented by the TLB hardware
  */
 #define _PAGE_GLOBAL_SHIFT	0
 #define _PAGE_GLOBAL		(1 << _PAGE_GLOBAL_SHIFT)
@@ -60,43 +60,40 @@
 #define _PAGE_MODIFIED_SHIFT	(_PAGE_ACCESSED_SHIFT + 1)
 #define _PAGE_MODIFIED		(1 << _PAGE_MODIFIED_SHIFT)
 
-#define _PAGE_SILENT_READ	_PAGE_VALID
-#define _PAGE_SILENT_WRITE	_PAGE_DIRTY
-
 #define _PFN_SHIFT		(PAGE_SHIFT - 12 + _CACHE_SHIFT + 3)
 
 #elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
 
 /*
- * The following are implemented by software
+ * The following bits are implemented in software
  */
-#define _PAGE_PRESENT_SHIFT	0
-#define _PAGE_PRESENT		(1 <<  _PAGE_PRESENT_SHIFT)
-#define _PAGE_READ_SHIFT	1
-#define _PAGE_READ		(1 <<  _PAGE_READ_SHIFT)
-#define _PAGE_WRITE_SHIFT	2
-#define _PAGE_WRITE		(1 <<  _PAGE_WRITE_SHIFT)
-#define _PAGE_ACCESSED_SHIFT	3
-#define _PAGE_ACCESSED		(1 <<  _PAGE_ACCESSED_SHIFT)
-#define _PAGE_MODIFIED_SHIFT	4
-#define _PAGE_MODIFIED		(1 <<  _PAGE_MODIFIED_SHIFT)
+#define _PAGE_PRESENT_SHIFT	(0)
+#define _PAGE_PRESENT		(1 << _PAGE_PRESENT_SHIFT)
+#define _PAGE_READ_SHIFT	(_PAGE_PRESENT_SHIFT + 1)
+#define _PAGE_READ		(1 << _PAGE_READ_SHIFT)
+#define _PAGE_WRITE_SHIFT	(_PAGE_READ_SHIFT + 1)
+#define _PAGE_WRITE		(1 << _PAGE_WRITE_SHIFT)
+#define _PAGE_ACCESSED_SHIFT	(_PAGE_WRITE_SHIFT + 1)
+#define _PAGE_ACCESSED		(1 << _PAGE_ACCESSED_SHIFT)
+#define _PAGE_MODIFIED_SHIFT	(_PAGE_ACCESSED_SHIFT + 1)
+#define _PAGE_MODIFIED		(1 << _PAGE_MODIFIED_SHIFT)
 
 /*
- * And these are the hardware TLB bits
+ * The following bits are implemented by the TLB hardware
  */
-#define _PAGE_GLOBAL_SHIFT	8
-#define _PAGE_GLOBAL		(1 <<  _PAGE_GLOBAL_SHIFT)
-#define _PAGE_VALID_SHIFT	9
-#define _PAGE_VALID		(1 <<  _PAGE_VALID_SHIFT)
-#define _PAGE_SILENT_READ	(1 <<  _PAGE_VALID_SHIFT)	/* synonym  */
-#define _PAGE_DIRTY_SHIFT	10
+#define _PAGE_GLOBAL_SHIFT	(_PAGE_MODIFIED_SHIFT + 4)
+#define _PAGE_GLOBAL		(1 << _PAGE_GLOBAL_SHIFT)
+#define _PAGE_VALID_SHIFT	(_PAGE_GLOBAL_SHIFT + 1)
+#define _PAGE_VALID		(1 << _PAGE_VALID_SHIFT)
+#define _PAGE_DIRTY_SHIFT	(_PAGE_VALID_SHIFT + 1)
 #define _PAGE_DIRTY		(1 << _PAGE_DIRTY_SHIFT)
-#define _PAGE_SILENT_WRITE	(1 << _PAGE_DIRTY_SHIFT)
-#define _CACHE_UNCACHED_SHIFT	11
+#define _CACHE_UNCACHED_SHIFT	(_PAGE_DIRTY_SHIFT + 1)
 #define _CACHE_UNCACHED		(1 << _CACHE_UNCACHED_SHIFT)
-#define _CACHE_MASK		(1 << _CACHE_UNCACHED_SHIFT)
+#define _CACHE_MASK		_CACHE_UNCACHED
 
-#else /* 'Normal' r4K case */
+#define _PFN_SHIFT		PAGE_SHIFT
+
+#else
 /*
  * When using the RI/XI bit support, we have 13 bits of flags below
  * the physical address. The RI/XI bits are placed such that a SRL 5
@@ -107,10 +104,8 @@
 
 /*
  * The following bits are implemented in software
- *
- * _PAGE_READ / _PAGE_READ_SHIFT should be unused if cpu_has_rixi.
  */
-#define _PAGE_PRESENT_SHIFT	(0)
+#define _PAGE_PRESENT_SHIFT	0
 #define _PAGE_PRESENT		(1 << _PAGE_PRESENT_SHIFT)
 #define _PAGE_READ_SHIFT	(cpu_has_rixi ? _PAGE_PRESENT_SHIFT : _PAGE_PRESENT_SHIFT + 1)
 #define _PAGE_READ ({BUG_ON(cpu_has_rixi); 1 << _PAGE_READ_SHIFT; })
@@ -125,16 +120,11 @@
 /* huge tlb page */
 #define _PAGE_HUGE_SHIFT	(_PAGE_MODIFIED_SHIFT + 1)
 #define _PAGE_HUGE		(1 << _PAGE_HUGE_SHIFT)
-#else
-#define _PAGE_HUGE_SHIFT	(_PAGE_MODIFIED_SHIFT)
-#define _PAGE_HUGE		({BUG(); 1; })	/* Dummy value */
-#endif
-
-#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
-/* huge tlb page */
 #define _PAGE_SPLITTING_SHIFT	(_PAGE_HUGE_SHIFT + 1)
 #define _PAGE_SPLITTING		(1 << _PAGE_SPLITTING_SHIFT)
 #else
+#define _PAGE_HUGE_SHIFT	(_PAGE_MODIFIED_SHIFT)
+#define _PAGE_HUGE		({BUG(); 1; })	/* Dummy value */
 #define _PAGE_SPLITTING_SHIFT	(_PAGE_HUGE_SHIFT)
 #define _PAGE_SPLITTING		({BUG(); 1; })	/* Dummy value */
 #endif
@@ -149,17 +139,10 @@
 
 #define _PAGE_GLOBAL_SHIFT	(_PAGE_NO_READ_SHIFT + 1)
 #define _PAGE_GLOBAL		(1 << _PAGE_GLOBAL_SHIFT)
-
 #define _PAGE_VALID_SHIFT	(_PAGE_GLOBAL_SHIFT + 1)
 #define _PAGE_VALID		(1 << _PAGE_VALID_SHIFT)
-/* synonym		   */
-#define _PAGE_SILENT_READ	(_PAGE_VALID)
-
-/* The MIPS dirty bit	   */
 #define _PAGE_DIRTY_SHIFT	(_PAGE_VALID_SHIFT + 1)
 #define _PAGE_DIRTY		(1 << _PAGE_DIRTY_SHIFT)
-#define _PAGE_SILENT_WRITE	(_PAGE_DIRTY)
-
 #define _CACHE_SHIFT		(_PAGE_DIRTY_SHIFT + 1)
 #define _CACHE_MASK		(7 << _CACHE_SHIFT)
 
@@ -167,9 +150,9 @@
 
 #endif /* defined(CONFIG_PHYS_ADDR_T_64BIT && defined(CONFIG_CPU_MIPS32) */
 
-#ifndef _PFN_SHIFT
-#define _PFN_SHIFT		    PAGE_SHIFT
-#endif
+#define _PAGE_SILENT_READ	_PAGE_VALID
+#define _PAGE_SILENT_WRITE	_PAGE_DIRTY
+
 #define _PFN_MASK		(~((1 << (_PFN_SHIFT)) - 1))
 
 #ifndef _PAGE_NO_READ
@@ -179,9 +162,6 @@
 #ifndef _PAGE_NO_EXEC
 #define _PAGE_NO_EXEC ({BUG(); 0; })
 #endif
-#ifndef _PAGE_GLOBAL_SHIFT
-#define _PAGE_GLOBAL_SHIFT ilog2(_PAGE_GLOBAL)
-#endif
 
 
 #ifndef __ASSEMBLY__
@@ -266,8 +246,9 @@ static inline uint64_t pte_to_entrylo(unsigned long pte_val)
 #endif
 
 #define __READABLE	(_PAGE_SILENT_READ | _PAGE_ACCESSED | (cpu_has_rixi ? 0 : _PAGE_READ))
-#define __WRITEABLE	(_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
+#define __WRITEABLE	(_PAGE_SILENT_WRITE | _PAGE_WRITE | _PAGE_MODIFIED)
 
-#define _PAGE_CHG_MASK	(_PFN_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _CACHE_MASK)
+#define _PAGE_CHG_MASK	(_PAGE_ACCESSED | _PAGE_MODIFIED |	\
+			 _PFN_MASK | _CACHE_MASK)
 
 #endif /* _ASM_PGTABLE_BITS_H */
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 583ff421547..bef782c4a44 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -99,29 +99,35 @@ extern void paging_init(void);
 
 #define htw_stop()							\
 do {									\
-	if (cpu_has_htw)						\
-		write_c0_pwctl(read_c0_pwctl() &			\
-			       ~(1 << MIPS_PWCTL_PWEN_SHIFT));		\
+	unsigned long flags;						\
+									\
+	if (cpu_has_htw) {						\
+		local_irq_save(flags);					\
+		if(!raw_current_cpu_data.htw_seq++) {			\
+			write_c0_pwctl(read_c0_pwctl() &		\
+				       ~(1 << MIPS_PWCTL_PWEN_SHIFT));	\
+			back_to_back_c0_hazard();			\
+		}							\
+		local_irq_restore(flags);				\
+	}								\
 } while(0)
 
 #define htw_start()							\
 do {									\
-	if (cpu_has_htw)						\
-		write_c0_pwctl(read_c0_pwctl() |			\
-			       (1 << MIPS_PWCTL_PWEN_SHIFT));		\
-} while(0)
-
-
-#define htw_reset()							\
-do {									\
+	unsigned long flags;						\
+									\
 	if (cpu_has_htw) {						\
-		htw_stop();						\
-		back_to_back_c0_hazard();				\
-		htw_start();						\
-		back_to_back_c0_hazard();				\
+		local_irq_save(flags);					\
+		if (!--raw_current_cpu_data.htw_seq) {			\
+			write_c0_pwctl(read_c0_pwctl() |		\
+				       (1 << MIPS_PWCTL_PWEN_SHIFT));	\
+			back_to_back_c0_hazard();			\
+		}							\
+		local_irq_restore(flags);				\
 	}								\
 } while(0)
 
+
 extern void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
 	pte_t pteval);
 
@@ -153,12 +159,13 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
 {
 	pte_t null = __pte(0);
 
+	htw_stop();
 	/* Preserve global status for the pair */
 	if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL)
 		null.pte_low = null.pte_high = _PAGE_GLOBAL;
 
 	set_pte_at(mm, addr, ptep, null);
-	htw_reset();
+	htw_start();
 }
 #else
 
@@ -188,6 +195,7 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
 
 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
+	htw_stop();
 #if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX)
 	/* Preserve global status for the pair */
 	if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL)
@@ -195,7 +203,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
 	else
 #endif
 		set_pte_at(mm, addr, ptep, __pte(0));
-	htw_reset();
+	htw_start();
 }
 #endif
 
@@ -334,7 +342,7 @@ static inline pte_t pte_mkyoung(pte_t pte)
 	return pte;
 }
 
-#ifdef _PAGE_HUGE
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 static inline int pte_huge(pte_t pte)	{ return pte_val(pte) & _PAGE_HUGE; }
 
 static inline pte_t pte_mkhuge(pte_t pte)
@@ -342,7 +350,7 @@ static inline pte_t pte_mkhuge(pte_t pte)
 	pte_val(pte) |= _PAGE_HUGE;
 	return pte;
 }
-#endif /* _PAGE_HUGE */
+#endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
 #endif
 static inline int pte_special(pte_t pte)	{ return 0; }
 static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index f1df4cb4a28..b5dcbee01fd 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -54,9 +54,7 @@ extern unsigned int vced_count, vcei_count;
 #define TASK_SIZE	0x7fff8000UL
 #endif
 
-#ifdef __KERNEL__
 #define STACK_TOP_MAX	TASK_SIZE
-#endif
 
 #define TASK_IS_32BIT_ADDR 1
 
@@ -73,11 +71,7 @@ extern unsigned int vced_count, vcei_count;
 #define TASK_SIZE32	0x7fff8000UL
 #define TASK_SIZE64	0x10000000000UL
 #define TASK_SIZE (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)
-
-#ifdef __KERNEL__
 #define STACK_TOP_MAX	TASK_SIZE64
-#endif
-
 
 #define TASK_SIZE_OF(tsk)						\
 	(test_tsk_thread_flag(tsk, TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)
@@ -211,6 +205,8 @@ struct octeon_cop2_state {
 	unsigned long	cop2_gfm_poly;
 	/* DMFC2 rt, 0x025A; DMFC2 rt, 0x025B - Pass2 */
 	unsigned long	cop2_gfm_result[2];
+	/* DMFC2 rt, 0x24F, DMFC2 rt, 0x50, OCTEON III */
+	unsigned long	cop2_sha3[2];
 };
 #define COP2_INIT						\
 	.cp2			= {0,},
@@ -399,4 +395,15 @@ unsigned long get_wchan(struct task_struct *p);
 
 #endif
 
+/*
+ * Functions & macros implementing the PR_GET_FP_MODE & PR_SET_FP_MODE options
+ * to the prctl syscall.
+ */
+extern int mips_get_process_fp_mode(struct task_struct *task);
+extern int mips_set_process_fp_mode(struct task_struct *task,
+				    unsigned int value);
+
+#define GET_FP_MODE(task)		mips_get_process_fp_mode(task)
+#define SET_FP_MODE(task,value)		mips_set_process_fp_mode(task, value)
+
 #endif /* _ASM_PROCESSOR_H */
diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h
index eaa26270a5e..8ebc2aa5f3e 100644
--- a/arch/mips/include/asm/prom.h
+++ b/arch/mips/include/asm/prom.h
@@ -24,13 +24,6 @@ struct boot_param_header;
 extern void __dt_setup_arch(void *bph);
 extern int __dt_register_buses(const char *bus0, const char *bus1);
 
-#define dt_setup_arch(sym)						\
-({									\
-	extern char __dtb_##sym##_begin[];				\
-									\
-	__dt_setup_arch(__dtb_##sym##_begin);				\
-})
-
 #else /* CONFIG_OF */
 static inline void device_tree_init(void) { }
 #endif /* CONFIG_OF */
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index fc783f843bd..ffc320389f4 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -40,8 +40,8 @@ struct pt_regs {
 	unsigned long cp0_cause;
 	unsigned long cp0_epc;
 #ifdef CONFIG_CPU_CAVIUM_OCTEON
-	unsigned long long mpl[3];	  /* MTM{0,1,2} */
-	unsigned long long mtp[3];	  /* MTP{0,1,2} */
+	unsigned long long mpl[6];        /* MTM{0-5} */
+	unsigned long long mtp[6];        /* MTP{0-5} */
 #endif
 } __aligned(8);
 
diff --git a/arch/mips/include/asm/r4kcache.h b/arch/mips/include/asm/r4kcache.h
index e293a8d89a6..1b22d2da88a 100644
--- a/arch/mips/include/asm/r4kcache.h
+++ b/arch/mips/include/asm/r4kcache.h
@@ -14,6 +14,7 @@
 
 #include <asm/asm.h>
 #include <asm/cacheops.h>
+#include <asm/compiler.h>
 #include <asm/cpu-features.h>
 #include <asm/cpu-type.h>
 #include <asm/mipsmtregs.h>
@@ -39,7 +40,7 @@ extern void (*r4k_blast_icache)(void);
 	__asm__ __volatile__(						\
 	"	.set	push					\n"	\
 	"	.set	noreorder				\n"	\
-	"	.set	arch=r4000				\n"	\
+	"	.set "MIPS_ISA_ARCH_LEVEL"			\n"	\
 	"	cache	%0, %1					\n"	\
 	"	.set	pop					\n"	\
 	:								\
@@ -147,7 +148,7 @@ static inline void flush_scache_line(unsigned long addr)
 	__asm__ __volatile__(					\
 	"	.set	push			\n"		\
 	"	.set	noreorder		\n"		\
-	"	.set	arch=r4000		\n"		\
+	"	.set "MIPS_ISA_ARCH_LEVEL"	\n"		\
 	"1:	cache	%0, (%1)		\n"		\
 	"2:	.set	pop			\n"		\
 	"	.section __ex_table,\"a\"	\n"		\
@@ -218,6 +219,7 @@ static inline void invalidate_tcache_page(unsigned long addr)
 	cache_op(Page_Invalidate_T, addr);
 }
 
+#ifndef CONFIG_CPU_MIPSR6
 #define cache16_unroll32(base,op)					\
 	__asm__ __volatile__(						\
 	"	.set push					\n"	\
@@ -322,6 +324,150 @@ static inline void invalidate_tcache_page(unsigned long addr)
 		: "r" (base),						\
 		  "i" (op));
 
+#else
+/*
+ * MIPS R6 changed the cache opcode and moved to a 8-bit offset field.
+ * This means we now need to increment the base register before we flush
+ * more cache lines
+ */
+#define cache16_unroll32(base,op)				\
+	__asm__ __volatile__(					\
+	"	.set push\n"					\
+	"	.set noreorder\n"				\
+	"	.set mips64r6\n"				\
+	"	.set noat\n"					\
+	"	cache %1, 0x000(%0); cache %1, 0x010(%0)\n"	\
+	"	cache %1, 0x020(%0); cache %1, 0x030(%0)\n"	\
+	"	cache %1, 0x040(%0); cache %1, 0x050(%0)\n"	\
+	"	cache %1, 0x060(%0); cache %1, 0x070(%0)\n"	\
+	"	cache %1, 0x080(%0); cache %1, 0x090(%0)\n"	\
+	"	cache %1, 0x0a0(%0); cache %1, 0x0b0(%0)\n"	\
+	"	cache %1, 0x0c0(%0); cache %1, 0x0d0(%0)\n"	\
+	"	cache %1, 0x0e0(%0); cache %1, 0x0f0(%0)\n"	\
+	"	addiu $1, $0, 0x100			\n"	\
+	"	cache %1, 0x000($1); cache %1, 0x010($1)\n"	\
+	"	cache %1, 0x020($1); cache %1, 0x030($1)\n"	\
+	"	cache %1, 0x040($1); cache %1, 0x050($1)\n"	\
+	"	cache %1, 0x060($1); cache %1, 0x070($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x090($1)\n"	\
+	"	cache %1, 0x0a0($1); cache %1, 0x0b0($1)\n"	\
+	"	cache %1, 0x0c0($1); cache %1, 0x0d0($1)\n"	\
+	"	cache %1, 0x0e0($1); cache %1, 0x0f0($1)\n"	\
+	"	.set pop\n"					\
+		:						\
+		: "r" (base),					\
+		  "i" (op));
+
+#define cache32_unroll32(base,op)				\
+	__asm__ __volatile__(					\
+	"	.set push\n"					\
+	"	.set noreorder\n"				\
+	"	.set mips64r6\n"				\
+	"	.set noat\n"					\
+	"	cache %1, 0x000(%0); cache %1, 0x020(%0)\n"	\
+	"	cache %1, 0x040(%0); cache %1, 0x060(%0)\n"	\
+	"	cache %1, 0x080(%0); cache %1, 0x0a0(%0)\n"	\
+	"	cache %1, 0x0c0(%0); cache %1, 0x0e0(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
+	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
+	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
+	"	addiu $1, $1, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
+	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
+	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
+	"	addiu $1, $1, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
+	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
+	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
+	"	.set pop\n"					\
+		:						\
+		: "r" (base),					\
+		  "i" (op));
+
+#define cache64_unroll32(base,op)				\
+	__asm__ __volatile__(					\
+	"	.set push\n"					\
+	"	.set noreorder\n"				\
+	"	.set mips64r6\n"				\
+	"	.set noat\n"					\
+	"	cache %1, 0x000(%0); cache %1, 0x040(%0)\n"	\
+	"	cache %1, 0x080(%0); cache %1, 0x0c0(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
+	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
+	"	.set pop\n"					\
+		:						\
+		: "r" (base),					\
+		  "i" (op));
+
+#define cache128_unroll32(base,op)				\
+	__asm__ __volatile__(					\
+	"	.set push\n"					\
+	"	.set noreorder\n"				\
+	"	.set mips64r6\n"				\
+	"	.set noat\n"					\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
+	"	addiu $1, %0, 0x100\n"				\
+	"	.set pop\n"					\
+		:						\
+		: "r" (base),					\
+		  "i" (op));
+#endif /* CONFIG_CPU_MIPSR6 */
+
 /*
  * Perform the cache operation specified by op using a user mode virtual
  * address while in kernel mode.
diff --git a/arch/mips/include/asm/sgialib.h b/arch/mips/include/asm/sgialib.h
index 753275accd1..195db5045ae 100644
--- a/arch/mips/include/asm/sgialib.h
+++ b/arch/mips/include/asm/sgialib.h
@@ -11,6 +11,7 @@
 #ifndef _ASM_SGIALIB_H
 #define _ASM_SGIALIB_H
 
+#include <linux/compiler.h>
 #include <asm/sgiarcs.h>
 
 extern struct linux_romvec *romvec;
@@ -70,8 +71,11 @@ extern LONG ArcRead(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
 extern LONG ArcWrite(ULONG fd, PVOID buf, ULONG num, PULONG cnt);
 
 /* Misc. routines. */
-extern VOID ArcReboot(VOID) __attribute__((noreturn));
-extern VOID ArcEnterInteractiveMode(VOID) __attribute__((noreturn));
+extern VOID ArcHalt(VOID) __noreturn;
+extern VOID ArcPowerDown(VOID) __noreturn;
+extern VOID ArcRestart(VOID) __noreturn;
+extern VOID ArcReboot(VOID) __noreturn;
+extern VOID ArcEnterInteractiveMode(VOID) __noreturn;
 extern VOID ArcFlushAllCaches(VOID);
 extern DISPLAY_STATUS *ArcGetDisplayStatus(ULONG FileID);
 
diff --git a/arch/mips/include/asm/siginfo.h b/arch/mips/include/asm/siginfo.h
deleted file mode 100644
index dd9a762646f..00000000000
--- a/arch/mips/include/asm/siginfo.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998, 1999, 2001, 2003 Ralf Baechle
- * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
- */
-#ifndef _ASM_SIGINFO_H
-#define _ASM_SIGINFO_H
-
-#include <uapi/asm/siginfo.h>
-
-
-/*
- * Duplicated here because of <asm-generic/siginfo.h> braindamage ...
- */
-#include <linux/string.h>
-
-static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
-{
-	if (from->si_code < 0)
-		memcpy(to, from, sizeof(*to));
-	else
-		/* _sigchld is currently the largest know union member */
-		memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
-}
-
-#endif /* _ASM_SIGINFO_H */
diff --git a/arch/mips/include/asm/spinlock.h b/arch/mips/include/asm/spinlock.h
index c6d06d383ef..b4548690ade 100644
--- a/arch/mips/include/asm/spinlock.h
+++ b/arch/mips/include/asm/spinlock.h
@@ -89,7 +89,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
 		"	 subu	%[ticket], %[ticket], 1			\n"
 		"	.previous					\n"
 		"	.set pop					\n"
-		: [ticket_ptr] "+" GCC_OFF12_ASM() (lock->lock),
+		: [ticket_ptr] "+" GCC_OFF_SMALL_ASM() (lock->lock),
 		  [serving_now_ptr] "+m" (lock->h.serving_now),
 		  [ticket] "=&r" (tmp),
 		  [my_ticket] "=&r" (my_ticket)
@@ -122,7 +122,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
 		"	 subu	%[ticket], %[ticket], 1			\n"
 		"	.previous					\n"
 		"	.set pop					\n"
-		: [ticket_ptr] "+" GCC_OFF12_ASM() (lock->lock),
+		: [ticket_ptr] "+" GCC_OFF_SMALL_ASM() (lock->lock),
 		  [serving_now_ptr] "+m" (lock->h.serving_now),
 		  [ticket] "=&r" (tmp),
 		  [my_ticket] "=&r" (my_ticket)
@@ -164,7 +164,7 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock)
 		"	 li	%[ticket], 0				\n"
 		"	.previous					\n"
 		"	.set pop					\n"
-		: [ticket_ptr] "+" GCC_OFF12_ASM() (lock->lock),
+		: [ticket_ptr] "+" GCC_OFF_SMALL_ASM() (lock->lock),
 		  [ticket] "=&r" (tmp),
 		  [my_ticket] "=&r" (tmp2),
 		  [now_serving] "=&r" (tmp3)
@@ -188,7 +188,7 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock)
 		"	 li	%[ticket], 0				\n"
 		"	.previous					\n"
 		"	.set pop					\n"
-		: [ticket_ptr] "+" GCC_OFF12_ASM() (lock->lock),
+		: [ticket_ptr] "+" GCC_OFF_SMALL_ASM() (lock->lock),
 		  [ticket] "=&r" (tmp),
 		  [my_ticket] "=&r" (tmp2),
 		  [now_serving] "=&r" (tmp3)
@@ -235,8 +235,8 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
 		"	beqzl	%1, 1b					\n"
 		"	 nop						\n"
 		"	.set	reorder					\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	} else {
 		do {
@@ -245,8 +245,8 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
 			"	bltz	%1, 1b				\n"
 			"	 addu	%1, 1				\n"
 			"2:	sc	%1, %0				\n"
-			: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-			: GCC_OFF12_ASM() (rw->lock)
+			: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+			: GCC_OFF_SMALL_ASM() (rw->lock)
 			: "memory");
 		} while (unlikely(!tmp));
 	}
@@ -254,9 +254,6 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
 	smp_llsc_mb();
 }
 
-/* Note the use of sub, not subu which will make the kernel die with an
-   overflow exception if we ever try to unlock an rwlock that is already
-   unlocked or is being held by a writer.  */
 static inline void arch_read_unlock(arch_rwlock_t *rw)
 {
 	unsigned int tmp;
@@ -266,20 +263,20 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
 	if (R10000_LLSC_WAR) {
 		__asm__ __volatile__(
 		"1:	ll	%1, %2		# arch_read_unlock	\n"
-		"	sub	%1, 1					\n"
+		"	addiu	%1, 1					\n"
 		"	sc	%1, %0					\n"
 		"	beqzl	%1, 1b					\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	} else {
 		do {
 			__asm__ __volatile__(
 			"1:	ll	%1, %2	# arch_read_unlock	\n"
-			"	sub	%1, 1				\n"
+			"	addiu	%1, -1				\n"
 			"	sc	%1, %0				\n"
-			: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-			: GCC_OFF12_ASM() (rw->lock)
+			: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+			: GCC_OFF_SMALL_ASM() (rw->lock)
 			: "memory");
 		} while (unlikely(!tmp));
 	}
@@ -299,8 +296,8 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
 		"	beqzl	%1, 1b					\n"
 		"	 nop						\n"
 		"	.set	reorder					\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	} else {
 		do {
@@ -309,8 +306,8 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
 			"	bnez	%1, 1b				\n"
 			"	 lui	%1, 0x8000			\n"
 			"2:	sc	%1, %0				\n"
-			: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp)
-			: GCC_OFF12_ASM() (rw->lock)
+			: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp)
+			: GCC_OFF_SMALL_ASM() (rw->lock)
 			: "memory");
 		} while (unlikely(!tmp));
 	}
@@ -349,8 +346,8 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
 		__WEAK_LLSC_MB
 		"	li	%2, 1					\n"
 		"2:							\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	} else {
 		__asm__ __volatile__(
@@ -366,8 +363,8 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
 		__WEAK_LLSC_MB
 		"	li	%2, 1					\n"
 		"2:							\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	}
 
@@ -393,8 +390,8 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
 		"	li	%2, 1					\n"
 		"	.set	reorder					\n"
 		"2:							\n"
-		: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
-		: GCC_OFF12_ASM() (rw->lock)
+		: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp), "=&r" (ret)
+		: GCC_OFF_SMALL_ASM() (rw->lock)
 		: "memory");
 	} else {
 		do {
@@ -406,9 +403,9 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
 			"	sc	%1, %0				\n"
 			"	li	%2, 1				\n"
 			"2:						\n"
-			: "=" GCC_OFF12_ASM() (rw->lock), "=&r" (tmp),
+			: "=" GCC_OFF_SMALL_ASM() (rw->lock), "=&r" (tmp),
 			  "=&r" (ret)
-			: GCC_OFF12_ASM() (rw->lock)
+			: GCC_OFF_SMALL_ASM() (rw->lock)
 			: "memory");
 		} while (unlikely(!tmp));
 
diff --git a/arch/mips/include/asm/spram.h b/arch/mips/include/asm/spram.h
index 0b89006e490..0f90d88e464 100644
--- a/arch/mips/include/asm/spram.h
+++ b/arch/mips/include/asm/spram.h
@@ -1,10 +1,10 @@
 #ifndef _MIPS_SPRAM_H
 #define _MIPS_SPRAM_H
 
-#ifdef CONFIG_CPU_MIPSR2
+#if defined(CONFIG_MIPS_SPRAM)
 extern __init void spram_config(void);
 #else
 static inline void spram_config(void) { };
-#endif /* CONFIG_CPU_MIPSR2 */
+#endif /* CONFIG_MIPS_SPRAM */
 
 #endif /* _MIPS_SPRAM_H */
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index b188c797565..28d6d9364bd 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -40,7 +40,7 @@
 		LONG_S	v1, PT_HI(sp)
 		mflhxu	v1
 		LONG_S	v1, PT_ACX(sp)
-#else
+#elif !defined(CONFIG_CPU_MIPSR6)
 		mfhi	v1
 #endif
 #ifdef CONFIG_32BIT
@@ -50,7 +50,7 @@
 		LONG_S	$10, PT_R10(sp)
 		LONG_S	$11, PT_R11(sp)
 		LONG_S	$12, PT_R12(sp)
-#ifndef CONFIG_CPU_HAS_SMARTMIPS
+#if !defined(CONFIG_CPU_HAS_SMARTMIPS) && !defined(CONFIG_CPU_MIPSR6)
 		LONG_S	v1, PT_HI(sp)
 		mflo	v1
 #endif
@@ -58,7 +58,7 @@
 		LONG_S	$14, PT_R14(sp)
 		LONG_S	$15, PT_R15(sp)
 		LONG_S	$24, PT_R24(sp)
-#ifndef CONFIG_CPU_HAS_SMARTMIPS
+#if !defined(CONFIG_CPU_HAS_SMARTMIPS) && !defined(CONFIG_CPU_MIPSR6)
 		LONG_S	v1, PT_LO(sp)
 #endif
 #ifdef CONFIG_CPU_CAVIUM_OCTEON
@@ -226,7 +226,7 @@
 		mtlhx	$24
 		LONG_L	$24, PT_LO(sp)
 		mtlhx	$24
-#else
+#elif !defined(CONFIG_CPU_MIPSR6)
 		LONG_L	$24, PT_LO(sp)
 		mtlo	$24
 		LONG_L	$24, PT_HI(sp)
diff --git a/arch/mips/include/asm/switch_to.h b/arch/mips/include/asm/switch_to.h
index b928b6f898c..e92d6c4b5ed 100644
--- a/arch/mips/include/asm/switch_to.h
+++ b/arch/mips/include/asm/switch_to.h
@@ -75,9 +75,12 @@ do {									\
 #endif
 
 #define __clear_software_ll_bit()					\
-do {									\
-	if (!__builtin_constant_p(cpu_has_llsc) || !cpu_has_llsc)	\
-		ll_bit = 0;						\
+do {	if (cpu_has_rw_llb) {						\
+		write_c0_lladdr(0);					\
+	} else {							\
+		if (!__builtin_constant_p(cpu_has_llsc) || !cpu_has_llsc)\
+			ll_bit = 0;					\
+	}								\
 } while (0)
 
 #define switch_to(prev, next, last)					\
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index 9e1295f874f..55ed6602204 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -28,7 +28,7 @@ struct thread_info {
 	unsigned long		tp_value;	/* thread pointer */
 	__u32			cpu;		/* current CPU */
 	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
-
+	int			r2_emul_return; /* 1 => Returning from R2 emulator */
 	mm_segment_t		addr_limit;	/*
 						 * thread address space limit:
 						 * 0x7fffffff for user-thead