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, 93 deletions

diff --git a/arch/tile/include/asm/traps.h b/arch/tile/include/asm/traps.h
deleted file mode 100644
index 11c82270c1f5..000000000000
--- a/arch/tile/include/asm/traps.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * 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_TRAPS_H
-#define _ASM_TILE_TRAPS_H
-
-#ifndef __ASSEMBLY__
-#include <arch/chip.h>
-
-/* mm/fault.c */
-void do_page_fault(struct pt_regs *, int fault_num,
-		   unsigned long address, unsigned long write);
-#if CHIP_HAS_TILE_DMA()
-void do_async_page_fault(struct pt_regs *);
-#endif
-
-#ifndef __tilegx__
-/*
- * We return this structure in registers to avoid having to write
- * additional save/restore code in the intvec.S caller.
- */
-struct intvec_state {
-	void *handler;
-	unsigned long vecnum;
-	unsigned long fault_num;
-	unsigned long info;
-	unsigned long retval;
-};
-struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num,
-				      unsigned long address,
-				      unsigned long info);
-#endif
-
-/* kernel/traps.c */
-void do_trap(struct pt_regs *, int fault_num, unsigned long reason);
-void kernel_double_fault(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
-
-/* kernel/time.c */
-void do_timer_interrupt(struct pt_regs *, int fault_num);
-
-/* kernel/messaging.c */
-void hv_message_intr(struct pt_regs *, int intnum);
-
-#define	TILE_NMI_DUMP_STACK	1	/* Dump stack for sysrq+'l' */
-
-/* kernel/process.c */
-void do_nmi_dump_stack(struct pt_regs *regs);
-
-/* kernel/traps.c */
-void do_nmi(struct pt_regs *, int fault_num, unsigned long reason);
-
-/* kernel/irq.c */
-void tile_dev_intr(struct pt_regs *, int intnum);
-
-#ifdef CONFIG_HARDWALL
-/* kernel/hardwall.c */
-void do_hardwall_trap(struct pt_regs *, int fault_num);
-#endif
-
-/* kernel/ptrace.c */
-void do_breakpoint(struct pt_regs *, int fault_num);
-
-
-#ifdef __tilegx__
-/* kernel/single_step.c */
-void gx_singlestep_handle(struct pt_regs *, int fault_num);
-
-/* kernel/intvec_64.S */
-void fill_ra_stack(void);
-
-/* Handle unalign data fixup. */
-extern void do_unaligned(struct pt_regs *regs, int vecnum);
-#endif
-
-#endif /* __ASSEMBLY__ */
-
-#ifdef __tilegx__
-/* 128 byte JIT per unalign fixup. */
-#define UNALIGN_JIT_SHIFT    7
-#endif
-
-#endif /* _ASM_TILE_TRAPS_H */