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/mmzone.h b/arch/tile/include/asm/mmzone.h
deleted file mode 100644
index 804f1098b6cd..000000000000
--- a/arch/tile/include/asm/mmzone.h
+++ /dev/null
@@ -1,70 +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_MMZONE_H
-#define _ASM_TILE_MMZONE_H
-
-extern struct pglist_data node_data[];
-#define NODE_DATA(nid)	(&node_data[nid])
-
-extern void get_memcfg_numa(void);
-
-#ifdef CONFIG_DISCONTIGMEM
-
-#include <asm/page.h>
-
-/*
- * Generally, memory ranges are always doled out by the hypervisor in
- * fixed-size, power-of-two increments.  That would make computing the node
- * very easy.  We could just take a couple high bits of the PA, which
- * denote the memory shim, and we'd be done.  However, when we're doing
- * memory striping, this may not be true; PAs with different high bit
- * values might be in the same node.  Thus, we keep a lookup table to
- * translate the high bits of the PFN to the node number.
- */
-extern int highbits_to_node[];
-
-static inline int pfn_to_nid(unsigned long pfn)
-{
-	return highbits_to_node[__pfn_to_highbits(pfn)];
-}
-
-#define kern_addr_valid(kaddr)	virt_addr_valid((void *)kaddr)
-
-static inline int pfn_valid(unsigned long pfn)
-{
-	int nid = pfn_to_nid(pfn);
-
-	if (nid >= 0)
-		return (pfn < node_end_pfn(nid));
-	return 0;
-}
-
-/* Information on the NUMA nodes that we compute early */
-extern unsigned long node_start_pfn[];
-extern unsigned long node_end_pfn[];
-extern unsigned long node_memmap_pfn[];
-extern unsigned long node_percpu_pfn[];
-extern unsigned long node_free_pfn[];
-#ifdef CONFIG_HIGHMEM
-extern unsigned long node_lowmem_end_pfn[];
-#endif
-#ifdef CONFIG_PCI
-extern unsigned long pci_reserve_start_pfn;
-extern unsigned long pci_reserve_end_pfn;
-#endif
-
-#endif /* CONFIG_DISCONTIGMEM */
-
-#endif /* _ASM_TILE_MMZONE_H */