Merge branch 'master' into for-next

Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.

11 files changed, 156 insertions, 26 deletions

diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h
index 3b8a868188f..0939462967e 100644
--- a/arch/mn10300/include/asm/bitops.h
+++ b/arch/mn10300/include/asm/bitops.h
@@ -233,8 +233,7 @@ int ffs(int x)
 #define ext2_clear_bit_atomic(lock, nr, addr) \
 	test_and_clear_bit((nr), (addr))
 
-#include <asm-generic/bitops/ext2-non-atomic.h>
-#include <asm-generic/bitops/minix-le.h>
+#include <asm-generic/bitops/le.h>
 
 #endif /* __KERNEL__ */
 #endif /* __ASM_BITOPS_H */
diff --git a/arch/mn10300/include/asm/cpu-regs.h b/arch/mn10300/include/asm/cpu-regs.h
index 90ed4a365c9..c54effae220 100644
--- a/arch/mn10300/include/asm/cpu-regs.h
+++ b/arch/mn10300/include/asm/cpu-regs.h
@@ -49,7 +49,7 @@ asm(" .am33_2\n");
 #define EPSW_IM_6		0x00000600	/* interrupt mode 6 */
 #define EPSW_IM_7		0x00000700	/* interrupt mode 7 */
 #define EPSW_IE			0x00000800	/* interrupt enable */
-#define EPSW_S			0x00003000	/* software auxilliary bits */
+#define EPSW_S			0x00003000	/* software auxiliary bits */
 #define EPSW_T			0x00008000	/* trace enable */
 #define EPSW_nSL		0x00010000	/* not supervisor level */
 #define EPSW_NMID		0x00020000	/* nonmaskable interrupt disable */
diff --git a/arch/mn10300/include/asm/debugger.h b/arch/mn10300/include/asm/debugger.h
new file mode 100644
index 00000000000..e1d3b083696
--- /dev/null
+++ b/arch/mn10300/include/asm/debugger.h
@@ -0,0 +1,43 @@
+/* Kernel debugger for MN10300
+ *
+ * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_DEBUGGER_H
+#define _ASM_DEBUGGER_H
+
+#if defined(CONFIG_KERNEL_DEBUGGER)
+
+extern int debugger_intercept(enum exception_code, int, int, struct pt_regs *);
+extern int at_debugger_breakpoint(struct pt_regs *);
+
+#ifndef CONFIG_MN10300_DEBUGGER_CACHE_NO_FLUSH
+extern void debugger_local_cache_flushinv(void);
+extern void debugger_local_cache_flushinv_one(u8 *);
+#else
+static inline void debugger_local_cache_flushinv(void) {}
+static inline void debugger_local_cache_flushinv_one(u8 *addr) {}
+#endif
+
+#else /* CONFIG_KERNEL_DEBUGGER */
+
+static inline int debugger_intercept(enum exception_code excep,
+				     int signo, int si_code,
+				     struct pt_regs *regs)
+{
+	return 0;
+}
+
+static inline int at_debugger_breakpoint(struct pt_regs *regs)
+{
+	return 0;
+}
+
+#endif /* CONFIG_KERNEL_DEBUGGER */
+#endif /* _ASM_DEBUGGER_H */
diff --git a/arch/mn10300/include/asm/div64.h b/arch/mn10300/include/asm/div64.h
index 34dcb8e6830..503efab2a51 100644
--- a/arch/mn10300/include/asm/div64.h
+++ b/arch/mn10300/include/asm/div64.h
@@ -16,6 +16,19 @@
 extern void ____unhandled_size_in_do_div___(void);
 
 /*
+ * Beginning with gcc 4.6, the MDR register is represented explicitly.  We
+ * must, therefore, at least explicitly clobber the register when we make
+ * changes to it.  The following assembly fragments *could* be rearranged in
+ * order to leave the moves to/from the MDR register to the compiler, but the
+ * gains would be minimal at best.
+ */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
+# define CLOBBER_MDR_CC		"mdr", "cc"
+#else
+# define CLOBBER_MDR_CC		"cc"
+#endif
+
+/*
  * divide n by base, leaving the result in n and returning the remainder
  * - we can do this quite efficiently on the MN10300 by cascading the divides
  *   through the MDR register
@@ -29,7 +42,7 @@ extern void ____unhandled_size_in_do_div___(void);
 		    "mov	mdr,%1	\n"				\
 		    : "+r"(n), "=d"(__rem)				\
 		    : "r"(base), "1"(__rem)				\
-		    : "cc"						\
+		    : CLOBBER_MDR_CC					\
 		    );							\
 	} else if (sizeof(n) <= 8) {					\
 		union {							\
@@ -48,7 +61,7 @@ extern void ____unhandled_size_in_do_div___(void);
 		    : "=d"(__rem), "=r"(__quot.w[1]), "=r"(__quot.w[0])	\
 		    : "r"(base), "0"(__rem), "1"(__quot.w[1]),		\
 		      "2"(__quot.w[0])					\
-		    : "cc"						\
+		    : CLOBBER_MDR_CC					\
 		    );							\
 		n = __quot.l;						\
 	} else {							\
@@ -72,7 +85,7 @@ unsigned __muldiv64u(unsigned val, unsigned mult, unsigned div)
 					 * MDR = MDR:val%div */
 	    : "=r"(result)
 	    : "0"(val), "ir"(mult), "r"(div)
-	    : "cc"
+	    : CLOBBER_MDR_CC
 	    );
 
 	return result;
@@ -93,7 +106,7 @@ signed __muldiv64s(signed val, signed mult, signed div)
 					 * MDR = MDR:val%div */
 	    : "=r"(result)
 	    : "0"(val), "ir"(mult), "r"(div)
-	    : "cc"
+	    : CLOBBER_MDR_CC
 	    );
 
 	return result;
diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h
index b7625de8ead..738ff72659d 100644
--- a/arch/mn10300/include/asm/fpu.h
+++ b/arch/mn10300/include/asm/fpu.h
@@ -55,7 +55,6 @@ static inline void clear_using_fpu(struct task_struct *tsk)
 
 extern asmlinkage void fpu_kill_state(struct task_struct *);
 extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code);
-extern asmlinkage void fpu_invalid_op(struct pt_regs *, enum exception_code);
 extern asmlinkage void fpu_init_state(void);
 extern asmlinkage void fpu_save(struct fpu_state_struct *);
 extern int fpu_setup_sigcontext(struct fpucontext *buf);
@@ -113,7 +112,6 @@ static inline void flush_fpu(void)
 
 extern asmlinkage
 void unexpected_fpu_exception(struct pt_regs *, enum exception_code);
-#define fpu_invalid_op unexpected_fpu_exception
 #define fpu_exception unexpected_fpu_exception
 
 struct task_struct;
diff --git a/arch/mn10300/include/asm/intctl-regs.h b/arch/mn10300/include/asm/intctl-regs.h
index 585b708c2bc..d65bbeebe50 100644
--- a/arch/mn10300/include/asm/intctl-regs.h
+++ b/arch/mn10300/include/asm/intctl-regs.h
@@ -60,11 +60,6 @@
 
 #ifndef __ASSEMBLY__
 extern void set_intr_level(int irq, u16 level);
-extern void mn10300_intc_set_level(unsigned int irq, unsigned int level);
-extern void mn10300_intc_clear(unsigned int irq);
-extern void mn10300_intc_set(unsigned int irq);
-extern void mn10300_intc_enable(unsigned int irq);
-extern void mn10300_intc_disable(unsigned int irq);
 extern void mn10300_set_lateack_irq_type(int irq);
 #endif
 
diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h
index 7a7ae12c711..678f68d5f37 100644
--- a/arch/mn10300/include/asm/irqflags.h
+++ b/arch/mn10300/include/asm/irqflags.h
@@ -20,7 +20,7 @@
 /*
  * interrupt control
  * - "disabled": run in IM1/2
- *   - level 0 - GDB stub
+ *   - level 0 - kernel debugger
  *   - level 1 - virtual serial DMA (if present)
  *   - level 5 - normal interrupt priority
  *   - level 6 - timer interrupt
diff --git a/arch/mn10300/include/asm/kgdb.h b/arch/mn10300/include/asm/kgdb.h
new file mode 100644
index 00000000000..eb245f18a70
--- /dev/null
+++ b/arch/mn10300/include/asm/kgdb.h
@@ -0,0 +1,81 @@
+/* Kernel debugger for MN10300
+ *
+ * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_KGDB_H
+#define _ASM_KGDB_H
+
+/*
+ * BUFMAX defines the maximum number of characters in inbound/outbound
+ * buffers at least NUMREGBYTES*2 are needed for register packets
+ * Longer buffer is needed to list all threads
+ */
+#define BUFMAX			1024
+
+/*
+ * Note that this register image is in a different order than the register
+ * image that Linux produces at interrupt time.
+ */
+enum regnames {
+	GDB_FR_D0		= 0,
+	GDB_FR_D1		= 1,
+	GDB_FR_D2		= 2,
+	GDB_FR_D3		= 3,
+	GDB_FR_A0		= 4,
+	GDB_FR_A1		= 5,
+	GDB_FR_A2		= 6,
+	GDB_FR_A3		= 7,
+
+	GDB_FR_SP		= 8,
+	GDB_FR_PC		= 9,
+	GDB_FR_MDR		= 10,
+	GDB_FR_EPSW		= 11,
+	GDB_FR_LIR		= 12,
+	GDB_FR_LAR		= 13,
+	GDB_FR_MDRQ		= 14,
+
+	GDB_FR_E0		= 15,
+	GDB_FR_E1		= 16,
+	GDB_FR_E2		= 17,
+	GDB_FR_E3		= 18,
+	GDB_FR_E4		= 19,
+	GDB_FR_E5		= 20,
+	GDB_FR_E6		= 21,
+	GDB_FR_E7		= 22,
+
+	GDB_FR_SSP		= 23,
+	GDB_FR_MSP		= 24,
+	GDB_FR_USP		= 25,
+	GDB_FR_MCRH		= 26,
+	GDB_FR_MCRL		= 27,
+	GDB_FR_MCVF		= 28,
+
+	GDB_FR_FPCR		= 29,
+	GDB_FR_DUMMY0		= 30,
+	GDB_FR_DUMMY1		= 31,
+
+	GDB_FR_FS0		= 32,
+
+	GDB_FR_SIZE		= 64,
+};
+
+#define GDB_ORIG_D0		41
+#define NUMREGBYTES		(GDB_FR_SIZE*4)
+
+static inline void arch_kgdb_breakpoint(void)
+{
+	asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break");
+}
+extern u8 __arch_kgdb_breakpoint;
+
+#define BREAK_INSTR_SIZE	1
+#define CACHE_FLUSH_IS_SAFE	1
+
+#endif /* _ASM_KGDB_H */
diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h
index a3930e43a95..6745dbe6494 100644
--- a/arch/mn10300/include/asm/smp.h
+++ b/arch/mn10300/include/asm/smp.h
@@ -34,7 +34,7 @@
 #define LOCAL_TIMER_IPI		193
 #define FLUSH_CACHE_IPI		194
 #define CALL_FUNCTION_NMI_IPI	195
-#define GDB_NMI_IPI		196
+#define DEBUGGER_NMI_IPI	196
 
 #define SMP_BOOT_IRQ		195
 
@@ -43,6 +43,7 @@
 #define LOCAL_TIMER_GxICR_LV	GxICR_LEVEL_4
 #define FLUSH_CACHE_GxICR_LV	GxICR_LEVEL_0
 #define SMP_BOOT_GxICR_LV	GxICR_LEVEL_0
+#define DEBUGGER_GxICR_LV	CONFIG_DEBUGGER_IRQ_LEVEL
 
 #define TIME_OUT_COUNT_BOOT_IPI	100
 #define DELAY_TIME_BOOT_IPI	75000
@@ -61,8 +62,9 @@
  * An alternate way of dealing with this could be to use the EPSW.S bits to
  * cache this information for systems with up to four CPUs.
  */
+#define arch_smp_processor_id()	(CPUID)
 #if 0
-#define raw_smp_processor_id()	(CPUID)
+#define raw_smp_processor_id()	(arch_smp_processor_id())
 #else
 #define raw_smp_processor_id()	(current_thread_info()->cpu)
 #endif
diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h
index aa07a4a5d79..87c213002d4 100644
--- a/arch/mn10300/include/asm/thread_info.h
+++ b/arch/mn10300/include/asm/thread_info.h
@@ -124,12 +124,18 @@ static inline unsigned long current_stack_pointer(void)
 
 /* thread information allocation */
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node)			\
+		kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node)			\
+		kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #endif
 
+#ifndef CONFIG_KGDB
 #define free_thread_info(ti)	kfree((ti))
+#else
+extern void free_thread_info(struct thread_info *);
+#endif
 #define get_thread_info(ti)	get_task_struct((ti)->task)
 #define put_thread_info(ti)	put_task_struct((ti)->task)
 
diff --git a/arch/mn10300/include/asm/types.h b/arch/mn10300/include/asm/types.h
index 7b9f01042fd..c1833eb192e 100644
--- a/arch/mn10300/include/asm/types.h
+++ b/arch/mn10300/include/asm/types.h
@@ -26,13 +26,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-#ifndef __ASSEMBLY__
-
-/* Dma addresses are 32-bits wide.  */
-typedef u32 dma_addr_t;
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_TYPES_H */