metag: Remove arch/metag/

The earliest Meta architecture port of Linux I have a record of was an
import of a Meta port of Linux v2.4.1 in February 2004, which was worked
on significantly over the next few years by Graham Whaley, Will Newton,
Matt Fleming, myself and others.

Eventually the port was merged into mainline in v3.9 in March 2013, not
long after Imagination Technologies bought MIPS Technologies and shifted
its CPU focus over to the MIPS architecture.

As a result, though the port was maintained for a while, kept on life
support for a while longer, and useful for testing a few specific
drivers for which I don't have ready access to the equivalent MIPS
hardware, it is now essentially dead with no users.

It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
is no longer maintained, now struggles to build modern kernels due to
toolchain bugs, and doesn't itself build with a modern GCC. The latest
buildroot port is still using an old uClibc snapshot which is no longer
served, and the latest uClibc doesn't build with GCC 4.2.4.

So lets call it a day and drop the Meta architecture port from the
kernel. RIP Meta.

Signed-off-by: James Hogan <jhogan@kernel.org>
Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Graham Whaley <graham.whaley@gmail.com>
Cc: linux-metag@vger.kernel.org

1 files changed, 0 insertions, 170 deletions

diff --git a/arch/metag/include/asm/io.h b/arch/metag/include/asm/io.h
deleted file mode 100644
index 71cd2bc54718..000000000000
--- a/arch/metag/include/asm/io.h
+++ /dev/null
@@ -1,170 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_METAG_IO_H
-#define _ASM_METAG_IO_H
-
-#include <linux/types.h>
-#include <asm/pgtable-bits.h>
-
-#define IO_SPACE_LIMIT  0
-
-#define page_to_bus page_to_phys
-#define bus_to_page phys_to_page
-
-/*
- * Generic I/O
- */
-
-#define __raw_readb __raw_readb
-static inline u8 __raw_readb(const volatile void __iomem *addr)
-{
-	u8 ret;
-	asm volatile("GETB %0,[%1]"
-		     : "=da" (ret)
-		     : "da" (addr)
-		     : "memory");
-	return ret;
-}
-
-#define __raw_readw __raw_readw
-static inline u16 __raw_readw(const volatile void __iomem *addr)
-{
-	u16 ret;
-	asm volatile("GETW %0,[%1]"
-		     : "=da" (ret)
-		     : "da" (addr)
-		     : "memory");
-	return ret;
-}
-
-#define __raw_readl __raw_readl
-static inline u32 __raw_readl(const volatile void __iomem *addr)
-{
-	u32 ret;
-	asm volatile("GETD %0,[%1]"
-		     : "=da" (ret)
-		     : "da" (addr)
-		     : "memory");
-	return ret;
-}
-
-#define __raw_readq __raw_readq
-static inline u64 __raw_readq(const volatile void __iomem *addr)
-{
-	u64 ret;
-	asm volatile("GETL %0,%t0,[%1]"
-		     : "=da" (ret)
-		     : "da" (addr)
-		     : "memory");
-	return ret;
-}
-
-#define __raw_writeb __raw_writeb
-static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
-{
-	asm volatile("SETB [%0],%1"
-		     :
-		     : "da" (addr),
-		       "da" (b)
-		     : "memory");
-}
-
-#define __raw_writew __raw_writew
-static inline void __raw_writew(u16 b, volatile void __iomem *addr)
-{
-	asm volatile("SETW [%0],%1"
-		     :
-		     : "da" (addr),
-		       "da" (b)
-		     : "memory");
-}
-
-#define __raw_writel __raw_writel
-static inline void __raw_writel(u32 b, volatile void __iomem *addr)
-{
-	asm volatile("SETD [%0],%1"
-		     :
-		     : "da" (addr),
-		       "da" (b)
-		     : "memory");
-}
-
-#define __raw_writeq __raw_writeq
-static inline void __raw_writeq(u64 b, volatile void __iomem *addr)
-{
-	asm volatile("SETL [%0],%1,%t1"
-		     :
-		     : "da" (addr),
-		       "da" (b)
-		     : "memory");
-}
-
-/*
- * The generic io.h can define all the other generic accessors
- */
-
-#include <asm-generic/io.h>
-
-/*
- * Despite being a 32bit architecture, Meta can do 64bit memory accesses
- * (assuming the bus supports it).
- */
-
-#define readq	__raw_readq
-#define writeq	__raw_writeq
-
-/*
- * Meta specific I/O for accessing non-MMU areas.
- *
- * These can be provided with a physical address rather than an __iomem pointer
- * and should only be used by core architecture code for accessing fixed core
- * registers. Generic drivers should use ioremap and the generic I/O accessors.
- */
-
-#define metag_in8(addr)		__raw_readb((volatile void __iomem *)(addr))
-#define metag_in16(addr)	__raw_readw((volatile void __iomem *)(addr))
-#define metag_in32(addr)	__raw_readl((volatile void __iomem *)(addr))
-#define metag_in64(addr)	__raw_readq((volatile void __iomem *)(addr))
-
-#define metag_out8(b, addr)	__raw_writeb(b, (volatile void __iomem *)(addr))
-#define metag_out16(b, addr)	__raw_writew(b, (volatile void __iomem *)(addr))
-#define metag_out32(b, addr)	__raw_writel(b, (volatile void __iomem *)(addr))
-#define metag_out64(b, addr)	__raw_writeq(b, (volatile void __iomem *)(addr))
-
-/*
- * io remapping functions
- */
-
-extern void __iomem *__ioremap(unsigned long offset,
-			       size_t size, unsigned long flags);
-extern void __iounmap(void __iomem *addr);
-
-/**
- *	ioremap		-	map bus memory into CPU space
- *	@offset:	bus address of the memory
- *	@size:		size of the resource to map
- *
- *	ioremap performs a platform specific sequence of operations to
- *	make bus memory CPU accessible via the readb/readw/readl/writeb/
- *	writew/writel functions and the other mmio helpers. The returned
- *	address is not guaranteed to be usable directly as a virtual
- *	address.
- */
-#define ioremap(offset, size)                   \
-	__ioremap((offset), (size), 0)
-
-#define ioremap_nocache(offset, size)           \
-	__ioremap((offset), (size), 0)
-
-#define ioremap_cached(offset, size)            \
-	__ioremap((offset), (size), _PAGE_CACHEABLE)
-
-#define ioremap_wc(offset, size)                \
-	__ioremap((offset), (size), _PAGE_WR_COMBINE)
-
-#define ioremap_wt(offset, size)                \
-	__ioremap((offset), (size), 0)
-
-#define iounmap(addr)                           \
-	__iounmap(addr)
-
-#endif  /* _ASM_METAG_IO_H */