c6x: remove architecture

The c6x architecture was added to the kernel in 2011 at a time when
running Linux on DSPs was widely seen as the logical evolution.
It appears the trend has gone back to running Linux on Arm based SoCs
with DSP, using a better supported software ecosystem, and having better
real-time behavior for the DSP code. An example of this is TI's own
Keystone2 platform.

The upstream kernel port appears to no longer have any users. Mark
Salter remained avaialable to review patches, but mentioned that
he no longer has access to working hardware himself. Without any
users, it's best to just remove the code completely to reduce the
work for cross-architecture code changes.

Many thanks to Mark for maintaining the code for the past ten years.

Link: https://lore.kernel.org/lkml/41dc7795afda9f776d8cd0d3075f776cf586e97c.camel@redhat.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 104 deletions

diff --git a/arch/c6x/include/asm/unaligned.h b/arch/c6x/include/asm/unaligned.h
deleted file mode 100644
index d628cc170564..000000000000
--- a/arch/c6x/include/asm/unaligned.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  Port on Texas Instruments TMS320C6x architecture
- *
- *  Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
- *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
- *  Rewritten for 2.6.3x: Mark Salter <msalter@redhat.com>
- */
-#ifndef _ASM_C6X_UNALIGNED_H
-#define _ASM_C6X_UNALIGNED_H
-
-#include <linux/swab.h>
-#include <linux/unaligned/generic.h>
-
-/*
- * The C64x+ can do unaligned word and dword accesses in hardware
- * using special load/store instructions.
- */
-
-static inline u16 get_unaligned_le16(const void *p)
-{
-	const u8 *_p = p;
-	return _p[0] | _p[1] << 8;
-}
-
-static inline u16 get_unaligned_be16(const void *p)
-{
-	const u8 *_p = p;
-	return _p[0] << 8 | _p[1];
-}
-
-static inline void put_unaligned_le16(u16 val, void *p)
-{
-	u8 *_p = p;
-	_p[0] = val;
-	_p[1] = val >> 8;
-}
-
-static inline void put_unaligned_be16(u16 val, void *p)
-{
-	u8 *_p = p;
-	_p[0] = val >> 8;
-	_p[1] = val;
-}
-
-static inline u32 get_unaligned32(const void *p)
-{
-	u32 val = (u32) p;
-	asm (" ldnw	.d1t1	*%0,%0\n"
-	     " nop     4\n"
-	     : "+a"(val));
-	return val;
-}
-
-static inline void put_unaligned32(u32 val, void *p)
-{
-	asm volatile (" stnw	.d2t1	%0,*%1\n"
-		      : : "a"(val), "b"(p) : "memory");
-}
-
-static inline u64 get_unaligned64(const void *p)
-{
-	u64 val;
-	asm volatile (" ldndw	.d1t1	*%1,%0\n"
-		      " nop     4\n"
-		      : "=a"(val) : "a"(p));
-	return val;
-}
-
-static inline void put_unaligned64(u64 val, const void *p)
-{
-	asm volatile (" stndw	.d2t1	%0,*%1\n"
-		      : : "a"(val), "b"(p) : "memory");
-}
-
-#ifdef CONFIG_CPU_BIG_ENDIAN
-
-#define get_unaligned_le32(p)	 __swab32(get_unaligned32(p))
-#define get_unaligned_le64(p)	 __swab64(get_unaligned64(p))
-#define get_unaligned_be32(p)	 get_unaligned32(p)
-#define get_unaligned_be64(p)	 get_unaligned64(p)
-#define put_unaligned_le32(v, p) put_unaligned32(__swab32(v), (p))
-#define put_unaligned_le64(v, p) put_unaligned64(__swab64(v), (p))
-#define put_unaligned_be32(v, p) put_unaligned32((v), (p))
-#define put_unaligned_be64(v, p) put_unaligned64((v), (p))
-#define get_unaligned	__get_unaligned_be
-#define put_unaligned	__put_unaligned_be
-
-#else
-
-#define get_unaligned_le32(p)	 get_unaligned32(p)
-#define get_unaligned_le64(p)	 get_unaligned64(p)
-#define get_unaligned_be32(p)	 __swab32(get_unaligned32(p))
-#define get_unaligned_be64(p)	 __swab64(get_unaligned64(p))
-#define put_unaligned_le32(v, p) put_unaligned32((v), (p))
-#define put_unaligned_le64(v, p) put_unaligned64((v), (p))
-#define put_unaligned_be32(v, p) put_unaligned32(__swab32(v), (p))
-#define put_unaligned_be64(v, p) put_unaligned64(__swab64(v), (p))
-#define get_unaligned	__get_unaligned_le
-#define put_unaligned	__put_unaligned_le
-
-#endif
-
-#endif /* _ASM_C6X_UNALIGNED_H */