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, 122 deletions

diff --git a/arch/tile/include/hv/netio_errors.h b/arch/tile/include/hv/netio_errors.h
deleted file mode 100644
index e1591bff61b5..000000000000
--- a/arch/tile/include/hv/netio_errors.h
+++ /dev/null
@@ -1,122 +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.
- */
-
-/**
- * Error codes returned from NetIO routines.
- */
-
-#ifndef __NETIO_ERRORS_H__
-#define __NETIO_ERRORS_H__
-
-/**
- * @addtogroup error
- *
- * @brief The error codes returned by NetIO functions.
- *
- * NetIO functions return 0 (defined as ::NETIO_NO_ERROR) on success, and
- * a negative value if an error occurs.
- *
- * In cases where a NetIO function failed due to a error reported by
- * system libraries, the error code will be the negation of the
- * system errno at the time of failure.  The @ref netio_strerror()
- * function will deliver error strings for both NetIO and system error
- * codes.
- *
- * @{
- */
-
-/** The set of all NetIO errors. */
-typedef enum
-{
-  /** Operation successfully completed. */
-  NETIO_NO_ERROR        = 0,
-
-  /** A packet was successfully retrieved from an input queue. */
-  NETIO_PKT             = 0,
-
-  /** Largest NetIO error number. */
-  NETIO_ERR_MAX         = -701,
-
-  /** The tile is not registered with the IPP. */
-  NETIO_NOT_REGISTERED  = -701,
-
-  /** No packet was available to retrieve from the input queue. */
-  NETIO_NOPKT           = -702,
-
-  /** The requested function is not implemented. */
-  NETIO_NOT_IMPLEMENTED = -703,
-
-  /** On a registration operation, the target queue already has the maximum
-   *  number of tiles registered for it, and no more may be added.  On a
-   *  packet send operation, the output queue is full and nothing more can
-   *  be queued until some of the queued packets are actually transmitted. */
-  NETIO_QUEUE_FULL      = -704,
-
-  /** The calling process or thread is not bound to exactly one CPU. */
-  NETIO_BAD_AFFINITY    = -705,
-
-  /** Cannot allocate memory on requested controllers. */
-  NETIO_CANNOT_HOME     = -706,
-
-  /** On a registration operation, the IPP specified is not configured
-   *  to support the options requested; for instance, the application
-   *  wants a specific type of tagged headers which the configured IPP
-   *  doesn't support.  Or, the supplied configuration information is
-   *  not self-consistent, or is out of range; for instance, specifying
-   *  both NETIO_RECV and NETIO_NO_RECV, or asking for more than
-   *  NETIO_MAX_SEND_BUFFERS to be preallocated.  On a VLAN or bucket
-   *  configure operation, the number of items, or the base item, was
-   *  out of range.
-   */
-  NETIO_BAD_CONFIG      = -707,
-
-  /** Too many tiles have registered to transmit packets. */
-  NETIO_TOOMANY_XMIT    = -708,
-
-  /** Packet transmission was attempted on a queue which was registered
-      with transmit disabled. */
-  NETIO_UNREG_XMIT      = -709,
-
-  /** This tile is already registered with the IPP. */
-  NETIO_ALREADY_REGISTERED = -710,
-
-  /** The Ethernet link is down. The application should try again later. */
-  NETIO_LINK_DOWN       = -711,
-
-  /** An invalid memory buffer has been specified.  This may be an unmapped
-   * virtual address, or one which does not meet alignment requirements.
-   * For netio_input_register(), this error may be returned when multiple
-   * processes specify different memory regions to be used for NetIO
-   * buffers.  That can happen if these processes specify explicit memory
-   * regions with the ::NETIO_FIXED_BUFFER_VA flag, or if tmc_cmem_init()
-   * has not been called by a common ancestor of the processes.
-   */
-  NETIO_FAULT           = -712,
-
-  /** Cannot combine user-managed shared memory and cache coherence. */
-  NETIO_BAD_CACHE_CONFIG = -713,
-
-  /** Smallest NetIO error number. */
-  NETIO_ERR_MIN         = -713,
-
-#ifndef __DOXYGEN__
-  /** Used internally to mean that no response is needed; never returned to
-   *  an application. */
-  NETIO_NO_RESPONSE     = 1
-#endif
-} netio_error_t;
-
-/** @} */
-
-#endif /* __NETIO_ERRORS_H__ */