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, 64 deletions

diff --git a/arch/tile/include/asm/pmc.h b/arch/tile/include/asm/pmc.h
deleted file mode 100644
index 7ae3956d9008..000000000000
--- a/arch/tile/include/asm/pmc.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright 2014 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_PMC_H
-#define _ASM_TILE_PMC_H
-
-#include <linux/ptrace.h>
-
-#define TILE_BASE_COUNTERS	2
-
-/* Bitfields below are derived from SPR PERF_COUNT_CTL*/
-#ifndef __tilegx__
-/* PERF_COUNT_CTL on TILEPro */
-#define TILE_CTL_EXCL_USER	(1 << 7) /* exclude user level */
-#define TILE_CTL_EXCL_KERNEL	(1 << 8) /* exclude kernel level */
-#define TILE_CTL_EXCL_HV	(1 << 9) /* exclude hypervisor level */
-
-#define TILE_SEL_MASK		0x7f	/* 7 bits for event SEL,
-					COUNT_0_SEL */
-#define TILE_PLM_MASK		0x780	/* 4 bits priv level msks,
-					COUNT_0_MASK*/
-#define TILE_EVENT_MASK	(TILE_SEL_MASK | TILE_PLM_MASK)
-
-#else /* __tilegx__*/
-/* PERF_COUNT_CTL on TILEGx*/
-#define TILE_CTL_EXCL_USER	(1 << 10) /* exclude user level */
-#define TILE_CTL_EXCL_KERNEL	(1 << 11) /* exclude kernel level */
-#define TILE_CTL_EXCL_HV	(1 << 12) /* exclude hypervisor level */
-
-#define TILE_SEL_MASK		0x3f	/* 6 bits for event SEL,
-					COUNT_0_SEL*/
-#define TILE_BOX_MASK		0x1c0	/* 3 bits box msks,
-					COUNT_0_BOX */
-#define TILE_PLM_MASK		0x3c00	/* 4 bits priv level msks,
-					COUNT_0_MASK */
-#define TILE_EVENT_MASK	(TILE_SEL_MASK | TILE_BOX_MASK | TILE_PLM_MASK)
-#endif /* __tilegx__*/
-
-/* Takes register and fault number.  Returns error to disable the interrupt. */
-typedef int (*perf_irq_t)(struct pt_regs *, int);
-
-int userspace_perf_handler(struct pt_regs *regs, int fault);
-
-perf_irq_t reserve_pmc_hardware(perf_irq_t new_perf_irq);
-void release_pmc_hardware(void);
-
-unsigned long pmc_get_overflow(void);
-void pmc_ack_overflow(unsigned long status);
-
-void unmask_pmc_interrupts(void);
-void mask_pmc_interrupts(void);
-
-#endif /* _ASM_TILE_PMC_H */