arch: remove m32r port

The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.

While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.

Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.

Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 341 deletions

diff --git a/arch/m32r/include/asm/local.h b/arch/m32r/include/asm/local.h
deleted file mode 100644
index 6780680c185d..000000000000
--- a/arch/m32r/include/asm/local.h
+++ /dev/null
@@ -1,341 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __M32R_LOCAL_H
-#define __M32R_LOCAL_H
-
-/*
- *  linux/include/asm-m32r/local.h
- *
- *  M32R version:
- *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
- *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- *    Copyright (C) 2007  Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- */
-
-#include <linux/percpu.h>
-#include <asm/assembler.h>
-#include <asm/local.h>
-
-/*
- * Atomic operations that C can't guarantee us.  Useful for
- * resource counting etc..
- */
-
-/*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
- * not some alias that contains the same information.
- */
-typedef struct { volatile int counter; } local_t;
-
-#define LOCAL_INIT(i)	{ (i) }
-
-/**
- * local_read - read local variable
- * @l: pointer of type local_t
- *
- * Atomically reads the value of @l.
- */
-#define local_read(l)	((l)->counter)
-
-/**
- * local_set - set local variable
- * @l: pointer of type local_t
- * @i: required value
- *
- * Atomically sets the value of @l to @i.
- */
-#define local_set(l, i)	(((l)->counter) = (i))
-
-/**
- * local_add_return - add long to local variable and return it
- * @i: long value to add
- * @l: pointer of type local_t
- *
- * Atomically adds @i to @l and return (@i + @l).
- */
-static inline long local_add_return(long i, local_t *l)
-{
-	unsigned long flags;
-	long result;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_add_return		\n\t"
-		DCACHE_CLEAR("%0", "r4", "%1")
-		"ld %0, @%1;			\n\t"
-		"add	%0, %2;			\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (result)
-		: "r" (&l->counter), "r" (i)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r4"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-
-	return result;
-}
-
-/**
- * local_sub_return - subtract long from local variable and return it
- * @i: long value to subtract
- * @l: pointer of type local_t
- *
- * Atomically subtracts @i from @l and return (@l - @i).
- */
-static inline long local_sub_return(long i, local_t *l)
-{
-	unsigned long flags;
-	long result;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_sub_return		\n\t"
-		DCACHE_CLEAR("%0", "r4", "%1")
-		"ld %0, @%1;			\n\t"
-		"sub	%0, %2;			\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (result)
-		: "r" (&l->counter), "r" (i)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r4"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-
-	return result;
-}
-
-/**
- * local_add - add long to local variable
- * @i: long value to add
- * @l: pointer of type local_t
- *
- * Atomically adds @i to @l.
- */
-#define local_add(i, l) ((void) local_add_return((i), (l)))
-
-/**
- * local_sub - subtract the local variable
- * @i: long value to subtract
- * @l: pointer of type local_t
- *
- * Atomically subtracts @i from @l.
- */
-#define local_sub(i, l) ((void) local_sub_return((i), (l)))
-
-/**
- * local_sub_and_test - subtract value from variable and test result
- * @i: integer value to subtract
- * @l: pointer of type local_t
- *
- * Atomically subtracts @i from @l and returns
- * true if the result is zero, or false for all
- * other cases.
- */
-#define local_sub_and_test(i, l) (local_sub_return((i), (l)) == 0)
-
-/**
- * local_inc_return - increment local variable and return it
- * @l: pointer of type local_t
- *
- * Atomically increments @l by 1 and returns the result.
- */
-static inline long local_inc_return(local_t *l)
-{
-	unsigned long flags;
-	long result;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_inc_return		\n\t"
-		DCACHE_CLEAR("%0", "r4", "%1")
-		"ld %0, @%1;			\n\t"
-		"addi	%0, #1;			\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (result)
-		: "r" (&l->counter)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r4"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-
-	return result;
-}
-
-/**
- * local_dec_return - decrement local variable and return it
- * @l: pointer of type local_t
- *
- * Atomically decrements @l by 1 and returns the result.
- */
-static inline long local_dec_return(local_t *l)
-{
-	unsigned long flags;
-	long result;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_dec_return		\n\t"
-		DCACHE_CLEAR("%0", "r4", "%1")
-		"ld %0, @%1;			\n\t"
-		"addi	%0, #-1;		\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (result)
-		: "r" (&l->counter)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r4"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-
-	return result;
-}
-
-/**
- * local_inc - increment local variable
- * @l: pointer of type local_t
- *
- * Atomically increments @l by 1.
- */
-#define local_inc(l) ((void)local_inc_return(l))
-
-/**
- * local_dec - decrement local variable
- * @l: pointer of type local_t
- *
- * Atomically decrements @l by 1.
- */
-#define local_dec(l) ((void)local_dec_return(l))
-
-/**
- * local_inc_and_test - increment and test
- * @l: pointer of type local_t
- *
- * Atomically increments @l by 1
- * and returns true if the result is zero, or false for all
- * other cases.
- */
-#define local_inc_and_test(l) (local_inc_return(l) == 0)
-
-/**
- * local_dec_and_test - decrement and test
- * @l: pointer of type local_t
- *
- * Atomically decrements @l by 1 and
- * returns true if the result is 0, or false for all
- * other cases.
- */
-#define local_dec_and_test(l) (local_dec_return(l) == 0)
-
-/**
- * local_add_negative - add and test if negative
- * @l: pointer of type local_t
- * @i: integer value to add
- *
- * Atomically adds @i to @l and returns true
- * if the result is negative, or false when
- * result is greater than or equal to zero.
- */
-#define local_add_negative(i, l) (local_add_return((i), (l)) < 0)
-
-#define local_cmpxchg(l, o, n) (cmpxchg_local(&((l)->counter), (o), (n)))
-#define local_xchg(v, new) (xchg_local(&((l)->counter), new))
-
-/**
- * local_add_unless - add unless the number is a given value
- * @l: pointer of type local_t
- * @a: the amount to add to l...
- * @u: ...unless l is equal to u.
- *
- * Atomically adds @a to @l, so long as it was not @u.
- * Returns non-zero if @l was not @u, and zero otherwise.
- */
-static inline int local_add_unless(local_t *l, long a, long u)
-{
-	long c, old;
-	c = local_read(l);
-	for (;;) {
-		if (unlikely(c == (u)))
-			break;
-		old = local_cmpxchg((l), c, c + (a));
-		if (likely(old == c))
-			break;
-		c = old;
-	}
-	return c != (u);
-}
-
-#define local_inc_not_zero(l) local_add_unless((l), 1, 0)
-
-static inline void local_clear_mask(unsigned long  mask, local_t *addr)
-{
-	unsigned long flags;
-	unsigned long tmp;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_clear_mask		\n\t"
-		DCACHE_CLEAR("%0", "r5", "%1")
-		"ld %0, @%1;			\n\t"
-		"and	%0, %2;			\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (tmp)
-		: "r" (addr), "r" (~mask)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r5"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-}
-
-static inline void local_set_mask(unsigned long  mask, local_t *addr)
-{
-	unsigned long flags;
-	unsigned long tmp;
-
-	local_irq_save(flags);
-	__asm__ __volatile__ (
-		"# local_set_mask		\n\t"
-		DCACHE_CLEAR("%0", "r5", "%1")
-		"ld %0, @%1;			\n\t"
-		"or	%0, %2;			\n\t"
-		"st %0, @%1;			\n\t"
-		: "=&r" (tmp)
-		: "r" (addr), "r" (mask)
-		: "memory"
-#ifdef CONFIG_CHIP_M32700_TS1
-		, "r5"
-#endif	/* CONFIG_CHIP_M32700_TS1 */
-	);
-	local_irq_restore(flags);
-}
-
-/* Atomic operations are already serializing on m32r */
-#define smp_mb__before_local_dec()	barrier()
-#define smp_mb__after_local_dec()	barrier()
-#define smp_mb__before_local_inc()	barrier()
-#define smp_mb__after_local_inc()	barrier()
-
-/* Use these for per-cpu local_t variables: on some archs they are
- * much more efficient than these naive implementations.  Note they take
- * a variable, not an address.
- */
-
-#define __local_inc(l)		((l)->a.counter++)
-#define __local_dec(l)		((l)->a.counter++)
-#define __local_add(i, l)	((l)->a.counter += (i))
-#define __local_sub(i, l)	((l)->a.counter -= (i))
-
-/* Use these for per-cpu local_t variables: on some archs they are
- * much more efficient than these naive implementations.  Note they take
- * a variable, not an address.
- */
-
-#endif /* __M32R_LOCAL_H */