arch: remove tile port

The Tile architecture port was added by Chris Metcalf in 2010, and
maintained until early 2018 when he orphaned it due to his departure
from Mellanox, and nobody else stepped up to maintain it. The product
line is still around in the form of the BlueField SoC, but no longer
uses the Tile architecture.

There are also still products for sale with Tile-GX SoCs, notably the
Mikrotik CCR router family. The products all use old (linux-3.3) kernels
with lots of patches and won't be upgraded by their manufacturers. There
have been efforts to port both OpenWRT and Debian to these, but both
projects have stalled and are very unlikely to be continued in the future.

Given that we are reasonably sure that nobody is still using the port
with an upstream kernel any more, it seems better to remove it now while
the port is in a good shape than to let it bitrot for a few years first.

Cc: Chris Metcalf <chris.d.metcalf@gmail.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: http://www.mellanox.com/page/npu_multicore_overview
Link: https://jenkins.debian.net/view/rebootstrap/job/rebootstrap_tilegx_gcc7/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 70 deletions

diff --git a/arch/tile/include/asm/syscalls.h b/arch/tile/include/asm/syscalls.h
deleted file mode 100644
index 07b298450ef2..000000000000
--- a/arch/tile/include/asm/syscalls.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * syscalls.h - Linux syscall interfaces (arch-specific)
- *
- * Copyright (c) 2008 Jaswinder Singh Rajput
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- */
-
-#ifndef _ASM_TILE_SYSCALLS_H
-#define _ASM_TILE_SYSCALLS_H
-
-#include <linux/compiler.h>
-#include <linux/linkage.h>
-#include <linux/signal.h>
-#include <linux/types.h>
-#include <linux/compat.h>
-
-/*
- * Note that by convention, any syscall which requires the current
- * register set takes an additional "struct pt_regs *" pointer; a
- * _sys_xxx() trampoline in intvec*.S just sets up the pointer and
- * jumps to sys_xxx().
- */
-
-/* kernel/sys.c */
-ssize_t sys32_readahead(int fd, u32 offset_lo, u32 offset_hi, u32 count);
-long sys32_fadvise64(int fd, u32 offset_lo, u32 offset_hi,
-		     u32 len, int advice);
-int sys32_fadvise64_64(int fd, u32 offset_lo, u32 offset_hi,
-		       u32 len_lo, u32 len_hi, int advice);
-long sys_cacheflush(unsigned long addr, unsigned long len,
-		    unsigned long flags);
-#ifndef __tilegx__  /* No mmap() in the 32-bit kernel. */
-#define sys_mmap sys_mmap
-#endif
-
-#ifndef __tilegx__
-/* mm/fault.c */
-long sys_cmpxchg_badaddr(unsigned long address);
-#endif
-
-#ifdef CONFIG_COMPAT
-/* These four are not defined for 64-bit, but serve as "compat" syscalls. */
-long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg);
-long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
-long sys_truncate64(const char __user *path, loff_t length);
-long sys_ftruncate64(unsigned int fd, loff_t length);
-#endif
-
-/* Provide versions of standard syscalls that use current_pt_regs(). */
-long sys_rt_sigreturn(void);
-#define sys_rt_sigreturn sys_rt_sigreturn
-
-/* These are the intvec*.S trampolines. */
-long _sys_rt_sigreturn(void);
-long _sys_clone(unsigned long clone_flags, unsigned long newsp,
-		void __user *parent_tid, void __user *child_tid);
-
-#include <asm-generic/syscalls.h>
-
-#endif /* _ASM_TILE_SYSCALLS_H */