Merge branch 'mti-next' of git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next

6 files changed, 84 insertions, 55 deletions

diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 32b9f21bfd85..8a12d00908e0 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -11,6 +11,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbdebug.h>
+#include <asm/mmu_context.h>
 
 static inline const char *msk2str(unsigned int mask)
 {
@@ -55,7 +56,7 @@ static void dump_tlb(int first, int last)
 	s_pagemask = read_c0_pagemask();
 	s_entryhi = read_c0_entryhi();
 	s_index = read_c0_index();
-	asid = s_entryhi & 0xff;
+	asid = ASID_MASK(s_entryhi);
 
 	for (i = first; i <= last; i++) {
 		write_c0_index(i);
@@ -85,7 +86,7 @@ static void dump_tlb(int first, int last)
 
 			printk("va=%0*lx asid=%02lx\n",
 			       width, (entryhi & ~0x1fffUL),
-			       entryhi & 0xff);
+			       ASID_MASK(entryhi));
 			printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ",
 			       width,
 			       (entrylo0 << 6) & PAGE_MASK, c0,
diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
index 053d3b0b0317..0580194e7402 100644
--- a/arch/mips/lib/memset.S
+++ b/arch/mips/lib/memset.S
@@ -5,7 +5,8 @@
  *
  * Copyright (C) 1998, 1999, 2000 by Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
- * Copyright (C) 2007  Maciej W. Rozycki
+ * Copyright (C) 2007 by Maciej W. Rozycki
+ * Copyright (C) 2011, 2012 MIPS Technologies, Inc.
  */
 #include <asm/asm.h>
 #include <asm/asm-offsets.h>
@@ -19,6 +20,20 @@
 #define LONG_S_R sdr
 #endif
 
+#ifdef CONFIG_CPU_MICROMIPS
+#define STORSIZE (LONGSIZE * 2)
+#define STORMASK (STORSIZE - 1)
+#define FILL64RG t8
+#define FILLPTRG t7
+#undef  LONG_S
+#define LONG_S LONG_SP
+#else
+#define STORSIZE LONGSIZE
+#define STORMASK LONGMASK
+#define FILL64RG a1
+#define FILLPTRG t0
+#endif
+
 #define EX(insn,reg,addr,handler)			\
 9:	insn	reg, addr;				\
 	.section __ex_table,"a";			\
@@ -26,23 +41,25 @@
 	.previous
 
 	.macro	f_fill64 dst, offset, val, fixup
-	EX(LONG_S, \val, (\offset +  0 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  1 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  2 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  3 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  4 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  5 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  6 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  7 * LONGSIZE)(\dst), \fixup)
-#if LONGSIZE == 4
-	EX(LONG_S, \val, (\offset +  8 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset +  9 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 10 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 11 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 12 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 13 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 14 * LONGSIZE)(\dst), \fixup)
-	EX(LONG_S, \val, (\offset + 15 * LONGSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  0 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  1 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  2 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  3 * STORSIZE)(\dst), \fixup)
+#if ((defined(CONFIG_CPU_MICROMIPS) && (LONGSIZE == 4)) || !defined(CONFIG_CPU_MICROMIPS))
+	EX(LONG_S, \val, (\offset +  4 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  5 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  6 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  7 * STORSIZE)(\dst), \fixup)
+#endif
+#if (!defined(CONFIG_CPU_MICROMIPS) && (LONGSIZE == 4))
+	EX(LONG_S, \val, (\offset +  8 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset +  9 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 10 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 11 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 12 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 13 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 14 * STORSIZE)(\dst), \fixup)
+	EX(LONG_S, \val, (\offset + 15 * STORSIZE)(\dst), \fixup)
 #endif
 	.endm
 
@@ -71,16 +88,20 @@ LEAF(memset)
 1:
 
 FEXPORT(__bzero)
-	sltiu		t0, a2, LONGSIZE	/* very small region? */
+	sltiu		t0, a2, STORSIZE	/* very small region? */
 	bnez		t0, .Lsmall_memset
-	 andi		t0, a0, LONGMASK	/* aligned? */
+	 andi		t0, a0, STORMASK	/* aligned? */
 
+#ifdef CONFIG_CPU_MICROMIPS
+	move		t8, a1			/* used by 'swp' instruction */
+	move		t9, a1
+#endif
 #ifndef CONFIG_CPU_DADDI_WORKAROUNDS
 	beqz		t0, 1f
-	 PTR_SUBU	t0, LONGSIZE		/* alignment in bytes */
+	 PTR_SUBU	t0, STORSIZE		/* alignment in bytes */
 #else
 	.set		noat
-	li		AT, LONGSIZE
+	li		AT, STORSIZE
 	beqz		t0, 1f
 	 PTR_SUBU	t0, AT			/* alignment in bytes */
 	.set		at
@@ -99,24 +120,27 @@ FEXPORT(__bzero)
 1:	ori		t1, a2, 0x3f		/* # of full blocks */
 	xori		t1, 0x3f
 	beqz		t1, .Lmemset_partial	/* no block to fill */
-	 andi		t0, a2, 0x40-LONGSIZE
+	 andi		t0, a2, 0x40-STORSIZE
 
 	PTR_ADDU	t1, a0			/* end address */
 	.set		reorder
 1:	PTR_ADDIU	a0, 64
 	R10KCBARRIER(0(ra))
-	f_fill64 a0, -64, a1, .Lfwd_fixup
+	f_fill64 a0, -64, FILL64RG, .Lfwd_fixup
 	bne		t1, a0, 1b
 	.set		noreorder
 
 .Lmemset_partial:
 	R10KCBARRIER(0(ra))
 	PTR_LA		t1, 2f			/* where to start */
+#ifdef CONFIG_CPU_MICROMIPS
+	LONG_SRL	t7, t0, 1
+#endif
 #if LONGSIZE == 4
-	PTR_SUBU	t1, t0
+	PTR_SUBU	t1, FILLPTRG
 #else
 	.set		noat
-	LONG_SRL		AT, t0, 1
+	LONG_SRL	AT, FILLPTRG, 1
 	PTR_SUBU	t1, AT
 	.set		at
 #endif
@@ -126,9 +150,9 @@ FEXPORT(__bzero)
 	.set		push
 	.set		noreorder
 	.set		nomacro
-	f_fill64 a0, -64, a1, .Lpartial_fixup	/* ... but first do longs ... */
+	f_fill64 a0, -64, FILL64RG, .Lpartial_fixup	/* ... but first do longs ... */
 2:	.set		pop
-	andi		a2, LONGMASK		/* At most one long to go */
+	andi		a2, STORMASK		/* At most one long to go */
 
 	beqz		a2, 1f
 	 PTR_ADDU	a0, a2			/* What's left */
@@ -169,7 +193,7 @@ FEXPORT(__bzero)
 
 .Lpartial_fixup:
 	PTR_L		t0, TI_TASK($28)
-	andi		a2, LONGMASK
+	andi		a2, STORMASK
 	LONG_L		t0, THREAD_BUADDR(t0)
 	LONG_ADDU	a2, t1
 	jr		ra
@@ -177,4 +201,4 @@ FEXPORT(__bzero)
 
 .Llast_fixup:
 	jr		ra
-	 andi		v1, a2, LONGMASK
+	 andi		v1, a2, STORMASK
diff --git a/arch/mips/lib/r3k_dump_tlb.c b/arch/mips/lib/r3k_dump_tlb.c
index 91615c2ef0cf..8327698b9937 100644
--- a/arch/mips/lib/r3k_dump_tlb.c
+++ b/arch/mips/lib/r3k_dump_tlb.c
@@ -9,6 +9,7 @@
 #include <linux/mm.h>
 
 #include <asm/mipsregs.h>
+#include <asm/mmu_context.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbdebug.h>
@@ -21,7 +22,7 @@ static void dump_tlb(int first, int last)
 	unsigned int asid;
 	unsigned long entryhi, entrylo0;
 
-	asid = read_c0_entryhi() & 0xfc0;
+	asid = ASID_MASK(read_c0_entryhi());
 
 	for (i = first; i <= last; i++) {
 		write_c0_index(i<<8);
@@ -35,7 +36,7 @@ static void dump_tlb(int first, int last)
 
 		/* Unused entries have a virtual address of KSEG0.  */
 		if ((entryhi & 0xffffe000) != 0x80000000
-		    && (entryhi & 0xfc0) == asid) {
+		    && (ASID_MASK(entryhi) == asid)) {
 			/*
 			 * Only print entries in use
 			 */
@@ -44,7 +45,7 @@ static void dump_tlb(int first, int last)
 			printk("va=%08lx asid=%08lx"
 			       "  [pa=%06lx n=%d d=%d v=%d g=%d]",
 			       (entryhi & 0xffffe000),
-			       entryhi & 0xfc0,
+			       ASID_MASK(entryhi),
 			       entrylo0 & PAGE_MASK,
 			       (entrylo0 & (1 << 11)) ? 1 : 0,
 			       (entrylo0 & (1 << 10)) ? 1 : 0,
diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S
index fdbb970f670d..e362dcdc69d1 100644
--- a/arch/mips/lib/strlen_user.S
+++ b/arch/mips/lib/strlen_user.S
@@ -3,8 +3,9 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 1996, 1998, 1999, 2004 by Ralf Baechle
- * Copyright (c) 1999 Silicon Graphics, Inc.
+ * Copyright (C) 1996, 1998, 1999, 2004 by Ralf Baechle
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ * Copyright (C) 2011 MIPS Technologies, Inc.
  */
 #include <asm/asm.h>
 #include <asm/asm-offsets.h>
@@ -28,9 +29,9 @@ LEAF(__strlen_user_asm)
 
 FEXPORT(__strlen_user_nocheck_asm)
 	move		v0, a0
-1:	EX(lb, t0, (v0), .Lfault)
+1:	EX(lbu, v1, (v0), .Lfault)
 	PTR_ADDIU	v0, 1
-	bnez		t0, 1b
+	bnez		v1, 1b
 	PTR_SUBU	v0, a0
 	jr		ra
 	END(__strlen_user_asm)
diff --git a/arch/mips/lib/strncpy_user.S b/arch/mips/lib/strncpy_user.S
index bad539487503..92870b6b53ea 100644
--- a/arch/mips/lib/strncpy_user.S
+++ b/arch/mips/lib/strncpy_user.S
@@ -3,7 +3,8 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 1996, 1999 by Ralf Baechle
+ * Copyright (C) 1996, 1999 by Ralf Baechle
+ * Copyright (C) 2011 MIPS Technologies, Inc.
  */
 #include <linux/errno.h>
 #include <asm/asm.h>
@@ -33,26 +34,27 @@ LEAF(__strncpy_from_user_asm)
 	bnez		v0, .Lfault
 
 FEXPORT(__strncpy_from_user_nocheck_asm)
-	move		v0, zero
-	move		v1, a1
 	.set		noreorder
-1:	EX(lbu, t0, (v1), .Lfault)
+	move		t0, zero
+	move		v1, a1
+1:	EX(lbu, v0, (v1), .Lfault)
 	PTR_ADDIU	v1, 1
 	R10KCBARRIER(0(ra))
-	beqz		t0, 2f
-	 sb		t0, (a0)
-	PTR_ADDIU	v0, 1
-	.set		reorder
-	PTR_ADDIU	a0, 1
-	bne		v0, a2, 1b
-2:	PTR_ADDU	t0, a1, v0
-	xor		t0, a1
-	bltz		t0, .Lfault
+	beqz		v0, 2f
+	 sb		v0, (a0)
+	PTR_ADDIU	t0, 1
+	bne		t0, a2, 1b
+	 PTR_ADDIU	a0, 1
+2:	PTR_ADDU	v0, a1, t0
+	xor		v0, a1
+	bltz		v0, .Lfault
+	 nop
 	jr		ra			# return n
+	 move		v0, t0
 	END(__strncpy_from_user_asm)
 
-.Lfault:	li		v0, -EFAULT
-	jr		ra
+.Lfault: jr		ra
+	  li		v0, -EFAULT
 
 	.section	__ex_table,"a"
 	PTR		1b, .Lfault
diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S
index beea03c8c0ce..fcacea5e61f1 100644
--- a/arch/mips/lib/strnlen_user.S
+++ b/arch/mips/lib/strnlen_user.S
@@ -35,7 +35,7 @@ FEXPORT(__strnlen_user_nocheck_asm)
 	PTR_ADDU	a1, a0			# stop pointer
 1:	beq		v0, a1, 1f		# limit reached?
 	EX(lb, t0, (v0), .Lfault)
-	PTR_ADDU	v0, 1
+	PTR_ADDIU	v0, 1
 	bnez		t0, 1b
 1:	PTR_SUBU	v0, a0
 	jr		ra