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>

13 files changed, 0 insertions, 3013 deletions

diff --git a/arch/tile/include/gxio/common.h b/arch/tile/include/gxio/common.h
deleted file mode 100644
index 724595a24d04..000000000000
--- a/arch/tile/include/gxio/common.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2012 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 _GXIO_COMMON_H_
-#define _GXIO_COMMON_H_
-
-/*
- * Routines shared between the various GXIO device components.
- */
-
-#include <hv/iorpc.h>
-
-#include <linux/types.h>
-#include <linux/compiler.h>
-#include <linux/io.h>
-
-/* Define the standard gxio MMIO functions using kernel functions. */
-#define __gxio_mmio_read8(addr)		readb(addr)
-#define __gxio_mmio_read16(addr)	readw(addr)
-#define __gxio_mmio_read32(addr)	readl(addr)
-#define __gxio_mmio_read64(addr)	readq(addr)
-#define __gxio_mmio_write8(addr, val)	writeb((val), (addr))
-#define __gxio_mmio_write16(addr, val)	writew((val), (addr))
-#define __gxio_mmio_write32(addr, val)	writel((val), (addr))
-#define __gxio_mmio_write64(addr, val)	writeq((val), (addr))
-#define __gxio_mmio_read(addr)		__gxio_mmio_read64(addr)
-#define __gxio_mmio_write(addr, val)	__gxio_mmio_write64((addr), (val))
-
-#endif /* !_GXIO_COMMON_H_ */
diff --git a/arch/tile/include/gxio/dma_queue.h b/arch/tile/include/gxio/dma_queue.h
deleted file mode 100644
index c8fd47edba30..000000000000
--- a/arch/tile/include/gxio/dma_queue.h
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * Copyright 2012 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 _GXIO_DMA_QUEUE_H_
-#define _GXIO_DMA_QUEUE_H_
-
-/*
- * DMA queue management APIs shared between TRIO and mPIPE.
- */
-
-#include <gxio/common.h>
-
-/* The credit counter lives in the high 32 bits. */
-#define DMA_QUEUE_CREDIT_SHIFT 32
-
-/*
- * State object that tracks a DMA queue's head and tail indices, as
- * well as the number of commands posted and completed.  The
- * structure is accessed via a thread-safe, lock-free algorithm.
- */
-typedef struct {
-	/*
-	 * Address of a MPIPE_EDMA_POST_REGION_VAL_t,
-	 * TRIO_PUSH_DMA_REGION_VAL_t, or TRIO_PULL_DMA_REGION_VAL_t
-	 * register.  These register have identical encodings and provide
-	 * information about how many commands have been processed.
-	 */
-	void *post_region_addr;
-
-	/*
-	 * A lazily-updated count of how many edescs the hardware has
-	 * completed.
-	 */
-	uint64_t hw_complete_count __attribute__ ((aligned(64)));
-
-	/*
-	 * High 32 bits are a count of available egress command credits,
-	 * low 24 bits are the next egress "slot".
-	 */
-	int64_t credits_and_next_index;
-
-} __gxio_dma_queue_t;
-
-/* Initialize a dma queue. */
-extern void __gxio_dma_queue_init(__gxio_dma_queue_t *dma_queue,
-				  void *post_region_addr,
-				  unsigned int num_entries);
-
-/*
- * Update the "credits_and_next_index" and "hw_complete_count" fields
- * based on pending hardware completions.  Note that some other thread
- * may have already done this and, importantly, may still be in the
- * process of updating "credits_and_next_index".
- */
-extern void __gxio_dma_queue_update_credits(__gxio_dma_queue_t *dma_queue);
-
-/* Wait for credits to become available. */
-extern int64_t __gxio_dma_queue_wait_for_credits(__gxio_dma_queue_t *dma_queue,
-						 int64_t modifier);
-
-/* Reserve slots in the queue, optionally waiting for slots to become
- * available, and optionally returning a "completion_slot" suitable for
- * direct comparison to "hw_complete_count".
- */
-static inline int64_t __gxio_dma_queue_reserve(__gxio_dma_queue_t *dma_queue,
-					       unsigned int num, bool wait,
-					       bool completion)
-{
-	uint64_t slot;
-
-	/*
-	 * Try to reserve 'num' egress command slots.  We do this by
-	 * constructing a constant that subtracts N credits and adds N to
-	 * the index, and using fetchaddgez to only apply it if the credits
-	 * count doesn't go negative.
-	 */
-	int64_t modifier = (((int64_t)(-num)) << DMA_QUEUE_CREDIT_SHIFT) | num;
-	int64_t old =
-		__insn_fetchaddgez(&dma_queue->credits_and_next_index,
-				   modifier);
-
-	if (unlikely(old + modifier < 0)) {
-		/*
-		 * We're out of credits.  Try once to get more by checking for
-		 * completed egress commands.  If that fails, wait or fail.
-		 */
-		__gxio_dma_queue_update_credits(dma_queue);
-		old = __insn_fetchaddgez(&dma_queue->credits_and_next_index,
-					 modifier);
-		if (old + modifier < 0) {
-			if (wait)
-				old = __gxio_dma_queue_wait_for_credits
-					(dma_queue, modifier);
-			else
-				return GXIO_ERR_DMA_CREDITS;
-		}
-	}
-
-	/* The bottom 24 bits of old encode the "slot". */
-	slot = (old & 0xffffff);
-
-	if (completion) {
-		/*
-		 * A "completion_slot" is a "slot" which can be compared to
-		 * "hw_complete_count" at any time in the future.  To convert
-		 * "slot" into a "completion_slot", we access "hw_complete_count"
-		 * once (knowing that we have reserved a slot, and thus, it will
-		 * be "basically" accurate), and combine its high 40 bits with
-		 * the 24 bit "slot", and handle "wrapping" by adding "1 << 24"
-		 * if the result is LESS than "hw_complete_count".
-		 */
-		uint64_t complete;
-		complete = READ_ONCE(dma_queue->hw_complete_count);
-		slot |= (complete & 0xffffffffff000000);
-		if (slot < complete)
-			slot += 0x1000000;
-	}
-
-	/*
-	 * If any of our slots mod 256 were equivalent to 0, go ahead and
-	 * collect some egress credits, and update "hw_complete_count", and
-	 * make sure the index doesn't overflow into the credits.
-	 */
-	if (unlikely(((old + num) & 0xff) < num)) {
-		__gxio_dma_queue_update_credits(dma_queue);
-
-		/* Make sure the index doesn't overflow into the credits. */
-#ifdef __BIG_ENDIAN__
-		*(((uint8_t *)&dma_queue->credits_and_next_index) + 4) = 0;
-#else
-		*(((uint8_t *)&dma_queue->credits_and_next_index) + 3) = 0;
-#endif
-	}
-
-	return slot;
-}
-
-/* Non-inlinable "__gxio_dma_queue_reserve(..., true)". */
-extern int64_t __gxio_dma_queue_reserve_aux(__gxio_dma_queue_t *dma_queue,
-					    unsigned int num, int wait);
-
-/* Check whether a particular "completion slot" has completed.
- *
- * Note that this function requires a "completion slot", and thus
- * cannot be used with the result of any "reserve_fast" function.
- */
-extern int __gxio_dma_queue_is_complete(__gxio_dma_queue_t *dma_queue,
-					int64_t completion_slot, int update);
-
-#endif /* !_GXIO_DMA_QUEUE_H_ */
diff --git a/arch/tile/include/gxio/iorpc_globals.h b/arch/tile/include/gxio/iorpc_globals.h
deleted file mode 100644
index 52c721f8dad9..000000000000
--- a/arch/tile/include/gxio/iorpc_globals.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __IORPC_LINUX_RPC_H__
-#define __IORPC_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-#define IORPC_OP_ARM_POLLFD            IORPC_OPCODE(IORPC_FORMAT_KERNEL_POLLFD, 0x9000)
-#define IORPC_OP_CLOSE_POLLFD          IORPC_OPCODE(IORPC_FORMAT_KERNEL_POLLFD, 0x9001)
-#define IORPC_OP_GET_MMIO_BASE         IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define IORPC_OP_CHECK_MMIO_OFFSET     IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-int __iorpc_arm_pollfd(int fd, int pollfd_cookie);
-
-int __iorpc_close_pollfd(int fd, int pollfd_cookie);
-
-int __iorpc_get_mmio_base(int fd, HV_PTE *base);
-
-int __iorpc_check_mmio_offset(int fd, unsigned long offset, unsigned long size);
-
-#endif /* !__IORPC_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/iorpc_mpipe.h b/arch/tile/include/gxio/iorpc_mpipe.h
deleted file mode 100644
index 4cda03de734f..000000000000
--- a/arch/tile/include/gxio/iorpc_mpipe.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __GXIO_MPIPE_LINUX_RPC_H__
-#define __GXIO_MPIPE_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <hv/drv_mpipe_intf.h>
-#include <asm/page.h>
-#include <gxio/kiorpc.h>
-#include <gxio/mpipe.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-#define GXIO_MPIPE_OP_ALLOC_BUFFER_STACKS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1200)
-#define GXIO_MPIPE_OP_INIT_BUFFER_STACK_AUX IORPC_OPCODE(IORPC_FORMAT_KERNEL_MEM, 0x1201)
-
-#define GXIO_MPIPE_OP_ALLOC_NOTIF_RINGS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1203)
-#define GXIO_MPIPE_OP_INIT_NOTIF_RING_AUX IORPC_OPCODE(IORPC_FORMAT_KERNEL_MEM, 0x1204)
-#define GXIO_MPIPE_OP_REQUEST_NOTIF_RING_INTERRUPT IORPC_OPCODE(IORPC_FORMAT_KERNEL_INTERRUPT, 0x1205)
-#define GXIO_MPIPE_OP_ENABLE_NOTIF_RING_INTERRUPT IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1206)
-#define GXIO_MPIPE_OP_ALLOC_NOTIF_GROUPS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1207)
-#define GXIO_MPIPE_OP_INIT_NOTIF_GROUP IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1208)
-#define GXIO_MPIPE_OP_ALLOC_BUCKETS    IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1209)
-#define GXIO_MPIPE_OP_INIT_BUCKET      IORPC_OPCODE(IORPC_FORMAT_NONE, 0x120a)
-#define GXIO_MPIPE_OP_ALLOC_EDMA_RINGS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x120b)
-#define GXIO_MPIPE_OP_INIT_EDMA_RING_AUX IORPC_OPCODE(IORPC_FORMAT_KERNEL_MEM, 0x120c)
-
-#define GXIO_MPIPE_OP_COMMIT_RULES     IORPC_OPCODE(IORPC_FORMAT_NONE, 0x120f)
-#define GXIO_MPIPE_OP_REGISTER_CLIENT_MEMORY IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x1210)
-#define GXIO_MPIPE_OP_LINK_OPEN_AUX    IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1211)
-#define GXIO_MPIPE_OP_LINK_CLOSE_AUX   IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1212)
-#define GXIO_MPIPE_OP_LINK_SET_ATTR_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1213)
-
-#define GXIO_MPIPE_OP_GET_TIMESTAMP_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x121e)
-#define GXIO_MPIPE_OP_SET_TIMESTAMP_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x121f)
-#define GXIO_MPIPE_OP_ADJUST_TIMESTAMP_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1220)
-#define GXIO_MPIPE_OP_CONFIG_EDMA_RING_BLKS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1221)
-#define GXIO_MPIPE_OP_ADJUST_TIMESTAMP_FREQ IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1222)
-#define GXIO_MPIPE_OP_ARM_POLLFD       IORPC_OPCODE(IORPC_FORMAT_KERNEL_POLLFD, 0x9000)
-#define GXIO_MPIPE_OP_CLOSE_POLLFD     IORPC_OPCODE(IORPC_FORMAT_KERNEL_POLLFD, 0x9001)
-#define GXIO_MPIPE_OP_GET_MMIO_BASE    IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define GXIO_MPIPE_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-int gxio_mpipe_alloc_buffer_stacks(gxio_mpipe_context_t *context,
-				   unsigned int count, unsigned int first,
-				   unsigned int flags);
-
-int gxio_mpipe_init_buffer_stack_aux(gxio_mpipe_context_t *context,
-				     void *mem_va, size_t mem_size,
-				     unsigned int mem_flags, unsigned int stack,
-				     unsigned int buffer_size_enum);
-
-
-int gxio_mpipe_alloc_notif_rings(gxio_mpipe_context_t *context,
-				 unsigned int count, unsigned int first,
-				 unsigned int flags);
-
-int gxio_mpipe_init_notif_ring_aux(gxio_mpipe_context_t *context, void *mem_va,
-				   size_t mem_size, unsigned int mem_flags,
-				   unsigned int ring);
-
-int gxio_mpipe_request_notif_ring_interrupt(gxio_mpipe_context_t *context,
-					    int inter_x, int inter_y,
-					    int inter_ipi, int inter_event,
-					    unsigned int ring);
-
-int gxio_mpipe_enable_notif_ring_interrupt(gxio_mpipe_context_t *context,
-					   unsigned int ring);
-
-int gxio_mpipe_alloc_notif_groups(gxio_mpipe_context_t *context,
-				  unsigned int count, unsigned int first,
-				  unsigned int flags);
-
-int gxio_mpipe_init_notif_group(gxio_mpipe_context_t *context,
-				unsigned int group,
-				gxio_mpipe_notif_group_bits_t bits);
-
-int gxio_mpipe_alloc_buckets(gxio_mpipe_context_t *context, unsigned int count,
-			     unsigned int first, unsigned int flags);
-
-int gxio_mpipe_init_bucket(gxio_mpipe_context_t *context, unsigned int bucket,
-			   MPIPE_LBL_INIT_DAT_BSTS_TBL_t bucket_info);
-
-int gxio_mpipe_alloc_edma_rings(gxio_mpipe_context_t *context,
-				unsigned int count, unsigned int first,
-				unsigned int flags);
-
-int gxio_mpipe_init_edma_ring_aux(gxio_mpipe_context_t *context, void *mem_va,
-				  size_t mem_size, unsigned int mem_flags,
-				  unsigned int ring, unsigned int channel);
-
-
-int gxio_mpipe_commit_rules(gxio_mpipe_context_t *context, const void *blob,
-			    size_t blob_size);
-
-int gxio_mpipe_register_client_memory(gxio_mpipe_context_t *context,
-				      unsigned int iotlb, HV_PTE pte,
-				      unsigned int flags);
-
-int gxio_mpipe_link_open_aux(gxio_mpipe_context_t *context,
-			     _gxio_mpipe_link_name_t name, unsigned int flags);
-
-int gxio_mpipe_link_close_aux(gxio_mpipe_context_t *context, int mac);
-
-int gxio_mpipe_link_set_attr_aux(gxio_mpipe_context_t *context, int mac,
-				 uint32_t attr, int64_t val);
-
-int gxio_mpipe_get_timestamp_aux(gxio_mpipe_context_t *context, uint64_t *sec,
-				 uint64_t *nsec, uint64_t *cycles);
-
-int gxio_mpipe_set_timestamp_aux(gxio_mpipe_context_t *context, uint64_t sec,
-				 uint64_t nsec, uint64_t cycles);
-
-int gxio_mpipe_adjust_timestamp_aux(gxio_mpipe_context_t *context,
-				    int64_t nsec);
-
-int gxio_mpipe_adjust_timestamp_freq(gxio_mpipe_context_t *context,
-				     int32_t ppb);
-
-int gxio_mpipe_arm_pollfd(gxio_mpipe_context_t *context, int pollfd_cookie);
-
-int gxio_mpipe_close_pollfd(gxio_mpipe_context_t *context, int pollfd_cookie);
-
-int gxio_mpipe_get_mmio_base(gxio_mpipe_context_t *context, HV_PTE *base);
-
-int gxio_mpipe_check_mmio_offset(gxio_mpipe_context_t *context,
-				 unsigned long offset, unsigned long size);
-
-#endif /* !__GXIO_MPIPE_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/iorpc_mpipe_info.h b/arch/tile/include/gxio/iorpc_mpipe_info.h
deleted file mode 100644
index f0b04284468b..000000000000
--- a/arch/tile/include/gxio/iorpc_mpipe_info.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __GXIO_MPIPE_INFO_LINUX_RPC_H__
-#define __GXIO_MPIPE_INFO_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <hv/drv_mpipe_intf.h>
-#include <asm/page.h>
-#include <gxio/kiorpc.h>
-#include <gxio/mpipe.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-
-#define GXIO_MPIPE_INFO_OP_INSTANCE_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1250)
-#define GXIO_MPIPE_INFO_OP_ENUMERATE_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1251)
-#define GXIO_MPIPE_INFO_OP_GET_MMIO_BASE IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define GXIO_MPIPE_INFO_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-
-int gxio_mpipe_info_instance_aux(gxio_mpipe_info_context_t *context,
-				 _gxio_mpipe_link_name_t name);
-
-int gxio_mpipe_info_enumerate_aux(gxio_mpipe_info_context_t *context,
-				  unsigned int idx,
-				  _gxio_mpipe_link_name_t *name,
-				  _gxio_mpipe_link_mac_t *mac);
-
-int gxio_mpipe_info_get_mmio_base(gxio_mpipe_info_context_t *context,
-				  HV_PTE *base);
-
-int gxio_mpipe_info_check_mmio_offset(gxio_mpipe_info_context_t *context,
-				      unsigned long offset, unsigned long size);
-
-#endif /* !__GXIO_MPIPE_INFO_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/iorpc_trio.h b/arch/tile/include/gxio/iorpc_trio.h
deleted file mode 100644
index 376a4f771167..000000000000
--- a/arch/tile/include/gxio/iorpc_trio.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __GXIO_TRIO_LINUX_RPC_H__
-#define __GXIO_TRIO_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <hv/drv_trio_intf.h>
-#include <gxio/trio.h>
-#include <gxio/kiorpc.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-#define GXIO_TRIO_OP_DEALLOC_ASID      IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1400)
-#define GXIO_TRIO_OP_ALLOC_ASIDS       IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1401)
-
-#define GXIO_TRIO_OP_ALLOC_MEMORY_MAPS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1404)
-
-#define GXIO_TRIO_OP_ALLOC_SCATTER_QUEUES IORPC_OPCODE(IORPC_FORMAT_NONE, 0x140e)
-#define GXIO_TRIO_OP_ALLOC_PIO_REGIONS IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1412)
-
-#define GXIO_TRIO_OP_INIT_PIO_REGION_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1414)
-
-#define GXIO_TRIO_OP_INIT_MEMORY_MAP_MMU_AUX IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x141e)
-#define GXIO_TRIO_OP_GET_PORT_PROPERTY IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x141f)
-#define GXIO_TRIO_OP_CONFIG_LEGACY_INTR IORPC_OPCODE(IORPC_FORMAT_KERNEL_INTERRUPT, 0x1420)
-#define GXIO_TRIO_OP_CONFIG_MSI_INTR   IORPC_OPCODE(IORPC_FORMAT_KERNEL_INTERRUPT, 0x1421)
-
-#define GXIO_TRIO_OP_SET_MPS_MRS       IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x1423)
-#define GXIO_TRIO_OP_FORCE_RC_LINK_UP  IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x1424)
-#define GXIO_TRIO_OP_FORCE_EP_LINK_UP  IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x1425)
-#define GXIO_TRIO_OP_GET_MMIO_BASE     IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define GXIO_TRIO_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-int gxio_trio_alloc_asids(gxio_trio_context_t *context, unsigned int count,
-			  unsigned int first, unsigned int flags);
-
-
-int gxio_trio_alloc_memory_maps(gxio_trio_context_t *context,
-				unsigned int count, unsigned int first,
-				unsigned int flags);
-
-
-int gxio_trio_alloc_scatter_queues(gxio_trio_context_t *context,
-				   unsigned int count, unsigned int first,
-				   unsigned int flags);
-
-int gxio_trio_alloc_pio_regions(gxio_trio_context_t *context,
-				unsigned int count, unsigned int first,
-				unsigned int flags);
-
-int gxio_trio_init_pio_region_aux(gxio_trio_context_t *context,
-				  unsigned int pio_region, unsigned int mac,
-				  uint32_t bus_address_hi, unsigned int flags);
-
-
-int gxio_trio_init_memory_map_mmu_aux(gxio_trio_context_t *context,
-				      unsigned int map, unsigned long va,
-				      uint64_t size, unsigned int asid,
-				      unsigned int mac, uint64_t bus_address,
-				      unsigned int node,
-				      unsigned int order_mode);
-
-int gxio_trio_get_port_property(gxio_trio_context_t *context,
-				struct pcie_trio_ports_property *trio_ports);
-
-int gxio_trio_config_legacy_intr(gxio_trio_context_t *context, int inter_x,
-				 int inter_y, int inter_ipi, int inter_event,
-				 unsigned int mac, unsigned int intx);
-
-int gxio_trio_config_msi_intr(gxio_trio_context_t *context, int inter_x,
-			      int inter_y, int inter_ipi, int inter_event,
-			      unsigned int mac, unsigned int mem_map,
-			      uint64_t mem_map_base, uint64_t mem_map_limit,
-			      unsigned int asid);
-
-
-int gxio_trio_set_mps_mrs(gxio_trio_context_t *context, uint16_t mps,
-			  uint16_t mrs, unsigned int mac);
-
-int gxio_trio_force_rc_link_up(gxio_trio_context_t *context, unsigned int mac);
-
-int gxio_trio_force_ep_link_up(gxio_trio_context_t *context, unsigned int mac);
-
-int gxio_trio_get_mmio_base(gxio_trio_context_t *context, HV_PTE *base);
-
-int gxio_trio_check_mmio_offset(gxio_trio_context_t *context,
-				unsigned long offset, unsigned long size);
-
-#endif /* !__GXIO_TRIO_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/iorpc_uart.h b/arch/tile/include/gxio/iorpc_uart.h
deleted file mode 100644
index 55429d48ea56..000000000000
--- a/arch/tile/include/gxio/iorpc_uart.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2013 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __GXIO_UART_LINUX_RPC_H__
-#define __GXIO_UART_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <hv/drv_uart_intf.h>
-#include <gxio/uart.h>
-#include <gxio/kiorpc.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-#define GXIO_UART_OP_CFG_INTERRUPT     IORPC_OPCODE(IORPC_FORMAT_KERNEL_INTERRUPT, 0x1900)
-#define GXIO_UART_OP_GET_MMIO_BASE     IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define GXIO_UART_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-int gxio_uart_cfg_interrupt(gxio_uart_context_t *context, int inter_x,
-			    int inter_y, int inter_ipi, int inter_event);
-
-int gxio_uart_get_mmio_base(gxio_uart_context_t *context, HV_PTE *base);
-
-int gxio_uart_check_mmio_offset(gxio_uart_context_t *context,
-				unsigned long offset, unsigned long size);
-
-#endif /* !__GXIO_UART_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/iorpc_usb_host.h b/arch/tile/include/gxio/iorpc_usb_host.h
deleted file mode 100644
index 79962a97de8e..000000000000
--- a/arch/tile/include/gxio/iorpc_usb_host.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/* This file is machine-generated; DO NOT EDIT! */
-#ifndef __GXIO_USB_HOST_LINUX_RPC_H__
-#define __GXIO_USB_HOST_LINUX_RPC_H__
-
-#include <hv/iorpc.h>
-
-#include <hv/drv_usb_host_intf.h>
-#include <asm/page.h>
-#include <gxio/kiorpc.h>
-#include <gxio/usb_host.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/pgtable.h>
-
-#define GXIO_USB_HOST_OP_CFG_INTERRUPT IORPC_OPCODE(IORPC_FORMAT_KERNEL_INTERRUPT, 0x1800)
-#define GXIO_USB_HOST_OP_REGISTER_CLIENT_MEMORY IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x1801)
-#define GXIO_USB_HOST_OP_GET_MMIO_BASE IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000)
-#define GXIO_USB_HOST_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001)
-
-int gxio_usb_host_cfg_interrupt(gxio_usb_host_context_t *context, int inter_x,
-				int inter_y, int inter_ipi, int inter_event);
-
-int gxio_usb_host_register_client_memory(gxio_usb_host_context_t *context,
-					 HV_PTE pte, unsigned int flags);
-
-int gxio_usb_host_get_mmio_base(gxio_usb_host_context_t *context,
-				HV_PTE *base);
-
-int gxio_usb_host_check_mmio_offset(gxio_usb_host_context_t *context,
-				    unsigned long offset, unsigned long size);
-
-#endif /* !__GXIO_USB_HOST_LINUX_RPC_H__ */
diff --git a/arch/tile/include/gxio/kiorpc.h b/arch/tile/include/gxio/kiorpc.h
deleted file mode 100644
index ee5820979ff3..000000000000
--- a/arch/tile/include/gxio/kiorpc.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright 2012 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.
- *
- * Support routines for kernel IORPC drivers.
- */
-
-#ifndef _GXIO_KIORPC_H
-#define _GXIO_KIORPC_H
-
-#include <linux/types.h>
-#include <asm/page.h>
-#include <arch/chip.h>
-
-#if CHIP_HAS_MMIO()
-void __iomem *iorpc_ioremap(int hv_fd, resource_size_t offset,
-			    unsigned long size);
-#endif
-
-#endif /* _GXIO_KIORPC_H */
diff --git a/arch/tile/include/gxio/mpipe.h b/arch/tile/include/gxio/mpipe.h
deleted file mode 100644
index 73e83a187866..000000000000
--- a/arch/tile/include/gxio/mpipe.h
+++ /dev/null
@@ -1,1871 +0,0 @@
-/*
- * Copyright 2012 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 _GXIO_MPIPE_H_
-#define _GXIO_MPIPE_H_
-
-/*
- *
- * An API for allocating, configuring, and manipulating mPIPE hardware
- * resources.
- */
-
-#include <gxio/common.h>
-#include <gxio/dma_queue.h>
-
-#include <linux/time.h>
-
-#include <arch/mpipe_def.h>
-#include <arch/mpipe_shm.h>
-
-#include <hv/drv_mpipe_intf.h>
-#include <hv/iorpc.h>
-
-/*
- *
- * The TILE-Gx mPIPE&tm; shim provides Ethernet connectivity, packet
- * classification, and packet load balancing services.  The
- * gxio_mpipe_ API, declared in <gxio/mpipe.h>, allows applications to
- * allocate mPIPE IO channels, configure packet distribution
- * parameters, and send and receive Ethernet packets.  The API is
- * designed to be a minimal wrapper around the mPIPE hardware, making
- * system calls only where necessary to preserve inter-process
- * protection guarantees.
- *
- * The APIs described below allow the programmer to allocate and
- * configure mPIPE resources.  As described below, the mPIPE is a
- * single shared hardware device that provides partitionable resources
- * that are shared between all applications in the system.  The
- * gxio_mpipe_ API allows userspace code to make resource request
- * calls to the hypervisor, which in turns keeps track of the
- * resources in use by all applications, maintains protection
- * guarantees, and resets resources upon application shutdown.
- *
- * We strongly recommend reading the mPIPE section of the IO Device
- * Guide (UG404) before working with this API.  Most functions in the
- * gxio_mpipe_ API are directly analogous to hardware interfaces and
- * the documentation assumes that the reader understands those
- * hardware interfaces.
- *
- * @section mpipe__ingress mPIPE Ingress Hardware Resources
- *
- * The mPIPE ingress hardware provides extensive hardware offload for
- * tasks like packet header parsing, load balancing, and memory
- * management.  This section provides a brief introduction to the
- * hardware components and the gxio_mpipe_ calls used to manage them;
- * see the IO Device Guide for a much more detailed description of the
- * mPIPE's capabilities.
- *
- * When a packet arrives at one of the mPIPE's Ethernet MACs, it is
- * assigned a channel number indicating which MAC received it.  It
- * then proceeds through the following hardware pipeline:
- *
- * @subsection mpipe__classification Classification
- *
- * A set of classification processors run header parsing code on each
- * incoming packet, extracting information including the destination
- * MAC address, VLAN, Ethernet type, and five-tuple hash.  Some of
- * this information is then used to choose which buffer stack will be
- * used to hold the packet, and which bucket will be used by the load
- * balancer to determine which application will receive the packet.
- *
- * The rules by which the buffer stack and bucket are chosen can be
- * configured via the @ref gxio_mpipe_classifier API.  A given app can
- * specify multiple rules, each one specifying a bucket range, and a
- * set of buffer stacks, to be used for packets matching the rule.
- * Each rule can optionally specify a restricted set of channels,
- * VLANs, and/or dMACs, in which it is interested.  By default, a
- * given rule starts out matching all channels associated with the
- * mPIPE context's set of open links; all VLANs; and all dMACs.
- * Subsequent restrictions can then be added.
- *
- * @subsection mpipe__load_balancing Load Balancing
- *
- * The mPIPE load balancer is responsible for choosing the NotifRing
- * to which the packet will be delivered.  This decision is based on
- * the bucket number indicated by the classification program.  In
- * general, the bucket number is based on some number of low bits of
- * the packet's flow hash (applications that aren't interested in flow
- * hashing use a single bucket).  Each load balancer bucket keeps a
- * record of the NotifRing to which packets directed to that bucket
- * are currently being delivered.  Based on the bucket's load
- * balancing mode (@ref gxio_mpipe_bucket_mode_t), the load balancer
- * either forwards the packet to the previously assigned NotifRing or
- * decides to choose a new NotifRing.  If a new NotifRing is required,
- * the load balancer chooses the least loaded ring in the NotifGroup
- * associated with the bucket.
- *
- * The load balancer is a shared resource.  Each application needs to
- * explicitly allocate NotifRings, NotifGroups, and buckets, using
- * gxio_mpipe_alloc_notif_rings(), gxio_mpipe_alloc_notif_groups(),
- * and gxio_mpipe_alloc_buckets().  Then the application needs to
- * configure them using gxio_mpipe_init_notif_ring() and
- * gxio_mpipe_init_notif_group_and_buckets().
- *
- * @subsection mpipe__buffers Buffer Selection and Packet Delivery
- *
- * Once the load balancer has chosen the destination NotifRing, the
- * mPIPE DMA engine pops at least one buffer off of the 'buffer stack'
- * chosen by the classification program and DMAs the packet data into
- * that buffer.  Each buffer stack provides a hardware-accelerated
- * stack of data buffers with the same size.  If the packet data is
- * larger than the buffers provided by the chosen buffer stack, the
- * mPIPE hardware pops off multiple buffers and chains the packet data
- * through a multi-buffer linked list.  Once the packet data is
- * delivered to the buffer(s), the mPIPE hardware writes the
- * ::gxio_mpipe_idesc_t metadata object (calculated by the classifier)
- * into the NotifRing and increments the number of packets delivered
- * to that ring.
- *
- * Applications can push buffers onto a buffer stack by calling
- * gxio_mpipe_push_buffer() or by egressing a packet with the
- * ::gxio_mpipe_edesc_t::hwb bit set, indicating that the egressed
- * buffers should be returned to the stack.
- *
- * Applications can allocate and initialize buffer stacks with the
- * gxio_mpipe_alloc_buffer_stacks() and gxio_mpipe_init_buffer_stack()
- * APIs.
- *
- * The application must also register the memory pages that will hold
- * packets.  This requires calling gxio_mpipe_register_page() for each
- * memory page that will hold packets allocated by the application for
- * a given buffer stack.  Since each buffer stack is limited to 16
- * registered pages, it may be necessary to use huge pages, or even
- * extremely huge pages, to hold all the buffers.
- *
- * @subsection mpipe__iqueue NotifRings
- *
- * Each NotifRing is a region of shared memory, allocated by the
- * application, to which the mPIPE delivers packet descriptors
- * (::gxio_mpipe_idesc_t).  The application can allocate them via
- * gxio_mpipe_alloc_notif_rings().  The application can then either
- * explicitly initialize them with gxio_mpipe_init_notif_ring() and
- * then read from them manually, or can make use of the convenience
- * wrappers provided by @ref gxio_mpipe_wrappers.
- *
- * @section mpipe__egress mPIPE Egress Hardware
- *
- * Applications use eDMA rings to queue packets for egress.  The
- * application can allocate them via gxio_mpipe_alloc_edma_rings().
- * The application can then either explicitly initialize them with
- * gxio_mpipe_init_edma_ring() and then write to them manually, or
- * can make use of the convenience wrappers provided by
- * @ref gxio_mpipe_wrappers.
- *
- * @section gxio__shortcomings Plans for Future API Revisions
- *
- * The API defined here is only an initial version of the mPIPE API.
- * Future plans include:
- *
- * - Higher level wrapper functions to provide common initialization
- * patterns.  This should help users start writing mPIPE programs
- * without having to learn the details of the hardware.
- *
- * - Support for reset and deallocation of resources, including
- * cleanup upon application shutdown.
- *
- * - Support for calling these APIs in the BME.
- *
- * - Support for IO interrupts.
- *
- * - Clearer definitions of thread safety guarantees.
- *
- * @section gxio__mpipe_examples Examples
- *
- * See the following mPIPE example programs for more information about
- * allocating mPIPE resources and using them in real applications:
- *
- * - @ref mpipe/ingress/app.c : Receiving packets.
- *
- * - @ref mpipe/forward/app.c : Forwarding packets.
- *
- * Note that there are several more examples.
- */
-
-/* Flags that can be passed to resource allocation functions. */
-enum gxio_mpipe_alloc_flags_e {
-	/* Require an allocation to start at a specified resource index. */
-	GXIO_MPIPE_ALLOC_FIXED = HV_MPIPE_ALLOC_FIXED,
-};
-
-/* Flags that can be passed to memory registration functions. */
-enum gxio_mpipe_mem_flags_e {
-	/* Do not fill L3 when writing, and invalidate lines upon egress. */
-	GXIO_MPIPE_MEM_FLAG_NT_HINT = IORPC_MEM_BUFFER_FLAG_NT_HINT,
-
-	/* L3 cache fills should only populate IO cache ways. */
-	GXIO_MPIPE_MEM_FLAG_IO_PIN = IORPC_MEM_BUFFER_FLAG_IO_PIN,
-};
-
-/* An ingress packet descriptor.  When a packet arrives, the mPIPE
- * hardware generates this structure and writes it into a NotifRing.
- */
-typedef MPIPE_PDESC_t gxio_mpipe_idesc_t;
-
-/* An egress command descriptor.  Applications write this structure
- * into eDMA rings and the hardware performs the indicated operation
- * (normally involving egressing some bytes).  Note that egressing a
- * single packet may involve multiple egress command descriptors.
- */
-typedef MPIPE_EDMA_DESC_t gxio_mpipe_edesc_t;
-
-/*
- * Max # of mpipe instances. 2 currently.
- */
-#define GXIO_MPIPE_INSTANCE_MAX  HV_MPIPE_INSTANCE_MAX
-
-#define NR_MPIPE_MAX   GXIO_MPIPE_INSTANCE_MAX
-
-/* Get the "va" field from an "idesc".
- *
- * This is the address at which the ingress hardware copied the first
- * byte of the packet.
- *
- * If the classifier detected a custom header, then this will point to
- * the custom header, and gxio_mpipe_idesc_get_l2_start() will point
- * to the actual L2 header.
- *
- * Note that this value may be misleading if "idesc->be" is set.
- *
- * @param idesc An ingress packet descriptor.
- */
-static inline unsigned char *gxio_mpipe_idesc_get_va(gxio_mpipe_idesc_t *idesc)
-{
-	return (unsigned char *)(long)idesc->va;
-}
-
-/* Get the "xfer_size" from an "idesc".
- *
- * This is the actual number of packet bytes transferred into memory
- * by the hardware.
- *
- * Note that this value may be misleading if "idesc->be" is set.
- *
- * @param idesc An ingress packet descriptor.
- *
- * ISSUE: Is this the best name for this?
- * FIXME: Add more docs about chaining, clipping, etc.
- */
-static inline unsigned int gxio_mpipe_idesc_get_xfer_size(gxio_mpipe_idesc_t
-							  *idesc)
-{
-	return idesc->l2_size;
-}
-
-/* Get the "l2_offset" from an "idesc".
- *
- * Extremely customized classifiers might not support this function.
- *
- * This is the number of bytes between the "va" and the L2 header.
- *
- * The L2 header consists of a destination mac address, a source mac
- * address, and an initial ethertype.  Various initial ethertypes
- * allow encoding extra information in the L2 header, often including
- * a vlan, and/or a new ethertype.
- *
- * Note that the "l2_offset" will be non-zero if (and only if) the
- * classifier processed a custom header for the packet.
- *
- * @param idesc An ingress packet descriptor.
- */
-static inline uint8_t gxio_mpipe_idesc_get_l2_offset(gxio_mpipe_idesc_t *idesc)
-{
-	return (idesc->custom1 >> 32) & 0xFF;
-}
-
-/* Get the "l2_start" from an "idesc".
- *
- * This is simply gxio_mpipe_idesc_get_va() plus
- * gxio_mpipe_idesc_get_l2_offset().
- *
- * @param idesc An ingress packet descriptor.
- */
-static inline unsigned char *gxio_mpipe_idesc_get_l2_start(gxio_mpipe_idesc_t
-							   *idesc)
-{
-	unsigned char *va = gxio_mpipe_idesc_get_va(idesc);
-	return va + gxio_mpipe_idesc_get_l2_offset(idesc);
-}
-
-/* Get the "l2_length" from an "idesc".
- *
- * This is simply gxio_mpipe_idesc_get_xfer_size() minus
- * gxio_mpipe_idesc_get_l2_offset().
- *
- * @param idesc An ingress packet descriptor.
- */
-static inline unsigned int gxio_mpipe_idesc_get_l2_length(gxio_mpipe_idesc_t
-							  *idesc)
-{
-	unsigned int xfer_size = idesc->l2_size;
-	return xfer_size - gxio_mpipe_idesc_get_l2_offset(idesc);
-}
-
-/* A context object used to manage mPIPE hardware resources. */
-typedef struct {
-
-	/* File descriptor for calling up to Linux (and thus the HV). */
-	int fd;
-
-	/* Corresponding mpipe instance #. */
-	int instance;
-
-	/* The VA at which configuration registers are mapped. */
-	char *mmio_cfg_base;
-
-	/* The VA at which IDMA, EDMA, and buffer manager are mapped. */
-	char *mmio_fast_base;
-
-	/* The "initialized" buffer stacks. */
-	gxio_mpipe_rules_stacks_t __stacks;
-
-} gxio_mpipe_context_t;
-
-/* This is only used internally, but it's most easily made visible here. */
-typedef gxio_mpipe_context_t gxio_mpipe_info_context_t;
-
-/* Initialize an mPIPE context.
- *
- * This function allocates an mPIPE "service domain" and maps the MMIO
- * registers into the caller's VA space.
- *
- * @param context Context object to be initialized.
- * @param mpipe_instance Instance number of mPIPE shim to be controlled via
- *  context.
- */
-extern int gxio_mpipe_init(gxio_mpipe_context_t *context,
-			   unsigned int mpipe_instance);
-
-/* Destroy an mPIPE context.
- *
- * This function frees the mPIPE "service domain" and unmaps the MMIO
- * registers from the caller's VA space.
- *
- * If a user process exits without calling this routine, the kernel
- * will destroy the mPIPE context as part of process teardown.
- *
- * @param context Context object to be destroyed.
- */
-extern int gxio_mpipe_destroy(gxio_mpipe_context_t *context);
-
-/*****************************************************************
- *                         Buffer Stacks                          *
- ******************************************************************/
-
-/* Allocate a set of buffer stacks.
- *
- * The return value is NOT interesting if count is zero.
- *
- * @param context An initialized mPIPE context.
- * @param count Number of stacks required.
- * @param first Index of first stack if ::GXIO_MPIPE_ALLOC_FIXED flag is set,
- *   otherwise ignored.
- * @param flags Flag bits from ::gxio_mpipe_alloc_flags_e.
- * @return Index of first allocated buffer stack, or
- * ::GXIO_MPIPE_ERR_NO_BUFFER_STACK if allocation failed.
- */
-extern int gxio_mpipe_alloc_buffer_stacks(gxio_mpipe_context_t *context,
-					  unsigned int count,
-					  unsigned int first,
-					  unsigned int flags);
-
-/* Enum codes for buffer sizes supported by mPIPE. */
-typedef enum {
-	/* 128 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_128 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_128,
-	/* 256 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_256 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_256,
-	/* 512 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_512 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_512,
-	/* 1024 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_1024 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_1024,
-	/* 1664 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_1664 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_1664,
-	/* 4096 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_4096 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_4096,
-	/* 10368 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_10368 =
-		MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_10368,
-	/* 16384 byte packet data buffer. */
-	GXIO_MPIPE_BUFFER_SIZE_16384 = MPIPE_BSM_INIT_DAT_1__SIZE_VAL_BSZ_16384
-} gxio_mpipe_buffer_size_enum_t;
-
-/* Convert a buffer size in bytes into a buffer size enum. */
-extern gxio_mpipe_buffer_size_enum_t
-gxio_mpipe_buffer_size_to_buffer_size_enum(size_t size);
-
-/* Convert a buffer size enum into a buffer size in bytes. */
-extern size_t
-gxio_mpipe_buffer_size_enum_to_buffer_size(gxio_mpipe_buffer_size_enum_t
-					   buffer_size_enum);
-
-/* Calculate the number of bytes required to store a given number of
- * buffers in the memory registered with a buffer stack via
- * gxio_mpipe_init_buffer_stack().
- */
-extern size_t gxio_mpipe_calc_buffer_stack_bytes(unsigned long buffers);
-
-/* Initialize a buffer stack.  This function binds a region of memory
- * to be used by the hardware for storing buffer addresses pushed via
- * gxio_mpipe_push_buffer() or as the result of sending a buffer out
- * the egress with the 'push to stack when done' bit set.  Once this
- * function returns, the memory region's contents may be arbitrarily
- * modified by the hardware at any time and software should not access
- * the memory region again.
- *
- * @param context An initialized mPIPE context.
- * @param stack The buffer stack index.
- * @param buffer_size_enum The size of each buffer in the buffer stack,
- * as an enum.
- * @param mem The address of the buffer stack.  This memory must be
- * physically contiguous and aligned to a 64kB boundary.
- * @param mem_size The size of the buffer stack, in bytes.
- * @param mem_flags ::gxio_mpipe_mem_flags_e memory flags.
- * @return Zero on success, ::GXIO_MPIPE_ERR_INVAL_BUFFER_SIZE if
- * buffer_size_enum is invalid, ::GXIO_MPIPE_ERR_BAD_BUFFER_STACK if
- * stack has not been allocated.
- */
-extern int gxio_mpipe_init_buffer_stack(gxio_mpipe_context_t *context,
-					unsigned int stack,
-					gxio_mpipe_buffer_size_enum_t
-					buffer_size_enum, void *mem,
-					size_t mem_size,
-					unsigned int mem_flags);
-
-/* Push a buffer onto a previously initialized buffer stack.
- *
- * The size of the buffer being pushed must match the size that was
- * registered with gxio_mpipe_init_buffer_stack().  All packet buffer
- * addresses are 128-byte aligned; the low 7 bits of the specified
- * buffer address will be ignored.
- *
- * @param context An initialized mPIPE context.
- * @param stack The buffer stack index.
- * @param buffer The buffer (the low seven bits are ignored).
- */
-static inline void gxio_mpipe_push_buffer(gxio_mpipe_context_t *context,
-					  unsigned int stack, void *buffer)
-{
-	MPIPE_BSM_REGION_ADDR_t offset = { {0} };
-	MPIPE_BSM_REGION_VAL_t val = { {0} };
-
-	/*
-	 * The mmio_fast_base region starts at the IDMA region, so subtract
-	 * off that initial offset.
-	 */
-	offset.region =
-		MPIPE_MMIO_ADDR__REGION_VAL_BSM -
-		MPIPE_MMIO_ADDR__REGION_VAL_IDMA;
-	offset.stack = stack;
-
-#if __SIZEOF_POINTER__ == 4
-	val.va = ((ulong) buffer) >> MPIPE_BSM_REGION_VAL__VA_SHIFT;
-#else
-	val.va = ((long)buffer) >> MPIPE_BSM_REGION_VAL__VA_SHIFT;
-#endif
-
-	__gxio_mmio_write(context->mmio_fast_base + offset.word, val.word);
-}
-
-/* Pop a buffer off of a previously initialized buffer stack.
- *
- * @param context An initialized mPIPE context.
- * @param stack The buffer stack index.
- * @return The buffer, or NULL if the stack is empty.
- */
-static inline void *gxio_mpipe_pop_buffer(gxio_mpipe_context_t *context,
-					  unsigned int stack)
-{
-	MPIPE_BSM_REGION_ADDR_t offset = { {0} };
-
-	/*
-	 * The mmio_fast_base region starts at the IDMA region, so subtract
-	 * off that initial offset.
-	 */
-	offset.region =
-		MPIPE_MMIO_ADDR__REGION_VAL_BSM -
-		MPIPE_MMIO_ADDR__REGION_VAL_IDMA;
-	offset.stack = stack;
-
-	while (1) {
-		/*
-		 * Case 1: val.c == ..._UNCHAINED, va is non-zero.
-		 * Case 2: val.c == ..._INVALID, va is zero.
-		 * Case 3: val.c == ..._NOT_RDY, va is zero.
-		 */
-		MPIPE_BSM_REGION_VAL_t val;
-		val.word =
-			__gxio_mmio_read(context->mmio_fast_base +
-					 offset.word);
-
-		/*
-		 * Handle case 1 and 2 by returning the buffer (or NULL).
-		 * Handle case 3 by waiting for the prefetch buffer to refill.
-		 */
-		if (val.c != MPIPE_EDMA_DESC_WORD1__C_VAL_NOT_RDY)
-			return (void *)((unsigned long)val.
-					va << MPIPE_BSM_REGION_VAL__VA_SHIFT);
-	}
-}
-
-/*****************************************************************
- *                          NotifRings                            *
- ******************************************************************/
-
-/* Allocate a set of NotifRings.
- *
- * The return value is NOT interesting if count is zero.
- *
- * Note that NotifRings are allocated in chunks, so allocating one at
- * a time is much less efficient than allocating several at once.
- *
- * @param context An initialized mPIPE context.
- * @param count Number of NotifRings required.
- * @param first Index of first NotifRing if ::GXIO_MPIPE_ALLOC_FIXED flag
- *   is set, otherwise ignored.
- * @param flags Flag bits from ::gxio_mpipe_alloc_flags_e.
- * @return Index of first allocated buffer NotifRing, or
- * ::GXIO_MPIPE_ERR_NO_NOTIF_RING if allocation failed.
- */
-extern int gxio_mpipe_alloc_notif_rings(gxio_mpipe_context_t *context,
-					unsigned int count, unsigned int first,
-					unsigned int flags);
-
-/* Initialize a NotifRing, using the given memory and size.
- *
- * @param context An initialized mPIPE context.
- * @param ring The NotifRing index.
- * @param mem A physically contiguous region of memory to be filled
- * with a ring of ::gxio_mpipe_idesc_t structures.
- * @param mem_size Number of bytes in the ring.  Must be 128, 512,
- * 2048, or 65536 * sizeof(gxio_mpipe_idesc_t).
- * @param mem_flags ::gxio_mpipe_mem_flags_e memory flags.
- *
- * @return 0 on success, ::GXIO_MPIPE_ERR_BAD_NOTIF_RING or
- * ::GXIO_ERR_INVAL_MEMORY_SIZE on failure.
- */
-extern int gxio_mpipe_init_notif_ring(gxio_mpipe_context_t *context,
-				      unsigned int ring,
-				      void *mem, size_t mem_size,
-				      unsigned int mem_flags);
-
-/* Configure an interrupt to be sent to a tile on incoming NotifRing
- *  traffic.  Once an interrupt is sent for a particular ring, no more
- *  will be sent until gxio_mica_enable_notif_ring_interrupt() is called.
- *
- * @param context An initialized mPIPE context.
- * @param x X coordinate of interrupt target tile.
- * @param y Y coordinate of interrupt target tile.
- * @param i Index of the IPI register which will receive the interrupt.
- * @param e Specific event which will be set in the target IPI register when
- * the interrupt occurs.
- * @param ring The NotifRing index.
- * @return Zero on success, GXIO_ERR_INVAL if params are out of range.
- */
-extern int gxio_mpipe_request_notif_ring_interrupt(gxio_mpipe_context_t
-						   *context, int x, int y,
-						   int i, int e,
-						   unsigned int ring);
-
-/* Enable an interrupt on incoming NotifRing traffic.
- *
- * @param context An initialized mPIPE context.
- * @param ring The NotifRing index.
- * @return Zero on success, GXIO_ERR_INVAL if params are out of range.
- */
-extern int gxio_mpipe_enable_notif_ring_interrupt(gxio_mpipe_context_t
-						  *context, unsigned int ring);
-
-/* Map all of a client's memory via the given IOTLB.
- * @param context An initialized mPIPE context.
- * @param iotlb IOTLB index.
- * @param pte Page table entry.
- * @param flags Flags.
- * @return Zero on success, or a negative error code.
- */
-extern int gxio_mpipe_register_client_memory(gxio_mpipe_context_t *context,
-					     unsigned int iotlb, HV_PTE pte,
-					     unsigned int flags);
-
-/*****************************************************************
- *                        Notif Groups                            *
- ******************************************************************/
-
-/* Allocate a set of NotifGroups.
- *
- * The return value is NOT interesting if count is zero.
- *
- * @param context An initialized mPIPE context.
- * @param count Number of NotifGroups required.
- * @param first Index of first NotifGroup if ::GXIO_MPIPE_ALLOC_FIXED flag
- *   is set, otherwise ignored.
- * @param flags Flag bits from ::gxio_mpipe_alloc_flags_e.
- * @return Index of first allocated buffer NotifGroup, or
- * ::GXIO_MPIPE_ERR_NO_NOTIF_GROUP if allocation failed.
- */
-extern int gxio_mpipe_alloc_notif_groups(gxio_mpipe_context_t *context,
-					 unsigned int count,
-					 unsigned int first,
-					 unsigned int flags);
-
-/* Add a NotifRing to a NotifGroup.  This only sets a bit in the
- * application's 'group' object; the hardware NotifGroup can be
- * initialized by passing 'group' to gxio_mpipe_init_notif_group() or
- * gxio_mpipe_init_notif_group_and_buckets().
- */
-static inline void
-gxio_mpipe_notif_group_add_ring(gxio_mpipe_notif_group_bits_t *bits, int ring)
-{
-	bits->ring_mask[ring / 64] |= (1ull << (ring % 64));
-}
-
-/* Set a particular NotifGroup bitmask.  Since the load balancer
- * makes decisions based on both bucket and NotifGroup state, most
- * applications should use gxio_mpipe_init_notif_group_and_buckets()
- * rather than using this function to configure just a NotifGroup.
- */
-extern int gxio_mpipe_init_notif_group(gxio_mpipe_context_t *context,
-				       unsigned int group,
-				       gxio_mpipe_notif_group_bits_t bits);
-
-/*****************************************************************
- *                         Load Balancer                          *
- ******************************************************************/
-
-/* Allocate a set of load balancer buckets.
- *
- * The return value is NOT interesting if count is zero.
- *
- * Note that buckets are allocated in chunks, so allocating one at
- * a time is much less efficient than allocating several at once.
- *
- * Note that the buckets are actually divided into two sub-ranges, of
- * different sizes, and different chunk sizes, and the range you get
- * by default is determined by the size of the request.  Allocations
- * cannot span the two sub-ranges.
- *
- * @param context An initialized mPIPE context.
- * @param count Number of buckets required.
- * @param first Index of first bucket if ::GXIO_MPIPE_ALLOC_FIXED flag is set,
- *   otherwise ignored.
- * @param flags Flag bits from ::gxio_mpipe_alloc_flags_e.
- * @return Index of first allocated buffer bucket, or
- * ::GXIO_MPIPE_ERR_NO_BUCKET if allocation failed.
- */
-extern int gxio_mpipe_alloc_buckets(gxio_mpipe_context_t *context,
-				    unsigned int count, unsigned int first,
-				    unsigned int flags);
-
-/* The legal modes for gxio_mpipe_bucket_info_t and
- * gxio_mpipe_init_notif_group_and_buckets().
- *
- * All modes except ::GXIO_MPIPE_BUCKET_ROUND_ROBIN expect that the user
- * will allocate a power-of-two number of buckets and initialize them
- * to the same mode.  The classifier program then uses the appropriate
- * number of low bits from the incoming packet's flow hash to choose a
- * load balancer bucket.  Based on that bucket's load balancing mode,
- * reference count, and currently active NotifRing, the load balancer
- * chooses the NotifRing to which the packet will be delivered.
- */
-typedef enum {
-	/* All packets for a bucket go to the same NotifRing unless the
-	 * NotifRing gets full, in which case packets will be dropped.  If
-	 * the bucket reference count ever reaches zero, a new NotifRing may
-	 * be chosen.
-	 */
-	GXIO_MPIPE_BUCKET_DYNAMIC_FLOW_AFFINITY =
-		MPIPE_LBL_INIT_DAT_BSTS_TBL__MODE_VAL_DFA,
-
-	/* All packets for a bucket always go to the same NotifRing.
-	 */
-	GXIO_MPIPE_BUCKET_STATIC_FLOW_AFFINITY =
-		MPIPE_LBL_INIT_DAT_BSTS_TBL__MODE_VAL_FIXED,
-
-	/* All packets for a bucket go to the least full NotifRing in the
-	 * group, providing load balancing round robin behavior.
-	 */
-	GXIO_MPIPE_BUCKET_ROUND_ROBIN =
-		MPIPE_LBL_INIT_DAT_BSTS_TBL__MODE_VAL_ALWAYS_PICK,
-
-	/* All packets for a bucket go to the same NotifRing unless the
-	 * NotifRing gets full, at which point the bucket starts using the
-	 * least full NotifRing in the group.  If all NotifRings in the
-	 * group are full, packets will be dropped.
-	 */
-	GXIO_MPIPE_BUCKET_STICKY_FLOW_LOCALITY =
-		MPIPE_LBL_INIT_DAT_BSTS_TBL__MODE_VAL_STICKY,
-
-	/* All packets for a bucket go to the same NotifRing unless the
-	 * NotifRing gets full, or a random timer fires, at which point the
-	 * bucket starts using the least full NotifRing in the group.  If
-	 * all NotifRings in the group are full, packets will be dropped.
-	 * WARNING: This mode is BROKEN on chips with fewer than 64 tiles.
-	 */
-	GXIO_MPIPE_BUCKET_PREFER_FLOW_LOCALITY =
-		MPIPE_LBL_INIT_DAT_BSTS_TBL__MODE_VAL_STICKY_RAND,
-
-} gxio_mpipe_bucket_mode_t;
-
-/* Copy a set of bucket initialization values into the mPIPE
- * hardware.  Since the load balancer makes decisions based on both
- * bucket and NotifGroup state, most applications should use
- * gxio_mpipe_init_notif_group_and_buckets() rather than using this
- * function to configure a single bucket.
- *
- * @param context An initialized mPIPE context.
- * @param bucket Bucket index to be initialized.
- * @param bucket_info Initial reference count, NotifRing index, and mode.
- * @return 0 on success, ::GXIO_MPIPE_ERR_BAD_BUCKET on failure.
- */
-extern int gxio_mpipe_init_bucket(gxio_mpipe_context_t *context,
-				  unsigned int bucket,
-				  gxio_mpipe_bucket_info_t bucket_info);
-
-/* Initializes a group and range of buckets and range of rings such
- * that the load balancer runs a particular load balancing function.
- *
- * First, the group is initialized with the given rings.
- *
- * Second, each bucket is initialized with the mode and group, and a
- * ring chosen round-robin from the given rings.
- *
- * Normally, the classifier picks a bucket, and then the load balancer
- * picks a ring, based on the bucket's mode, group, and current ring,
- * possibly updating the bucket's ring.
- *
- * @param context An initialized mPIPE context.
- * @param group The group.
- * @param ring The first ring.
- * @param num_rings The number of rings.
- * @param bucket The first bucket.
- * @param num_buckets The number of buckets.
- * @param mode The load balancing mode.
- *
- * @return 0 on success, ::GXIO_MPIPE_ERR_BAD_BUCKET,
- * ::GXIO_MPIPE_ERR_BAD_NOTIF_GROUP, or
- * ::GXIO_MPIPE_ERR_BAD_NOTIF_RING on failure.
- */
-extern int gxio_mpipe_init_notif_group_and_buckets(gxio_mpipe_context_t
-						   *context,
-						   unsigned int group,
-						   unsigned int ring,
-						   unsigned int num_rings,
-						   unsigned int bucket,
-						   unsigned int num_buckets,
-						   gxio_mpipe_bucket_mode_t
-						   mode);
-
-/* Return credits to a NotifRing and/or bucket.
- *
- * @param context An initialized mPIPE context.
- * @param ring The NotifRing index, or -1.
- * @param bucket The bucket, or -1.
- * @param count The number of credits to return.
- */
-static inline void gxio_mpipe_credit(gxio_mpipe_context_t *context,
-				     int ring, int bucket, unsigned int count)
-{
-	/* NOTE: Fancy struct initialization would break "C89" header test. */
-
-	MPIPE_IDMA_RELEASE_REGION_ADDR_t offset = { {0} };
-	MPIPE_IDMA_RELEASE_REGION_VAL_t val = { {0} };
-
-	/*
-	 * The mmio_fast_base region starts at the IDMA region, so subtract
-	 * off that initial offset.
-	 */
-	offset.region =
-		MPIPE_MMIO_ADDR__REGION_VAL_IDMA -
-		MPIPE_MMIO_ADDR__REGION_VAL_IDMA;
-	offset.ring = ring;
-	offset.bucket = bucket;
-	offset.ring_enable = (ring >= 0);
-	offset.bucket_enable = (bucket >= 0);
-	val.count = count;
-
-	__gxio_mmio_write(context->mmio_fast_base + offset.word, val.word);
-}
-
-/*****************************************************************
- *                         Egress Rings                           *
- ******************************************************************/
-
-/* Allocate a set of eDMA rings.
- *
- * The return value is NOT interesting if count is zero.
- *
- * @param context An initialized mPIPE context.
- * @param count Number of eDMA rings required.
- * @param first Index of first eDMA ring if ::GXIO_MPIPE_ALLOC_FIXED flag
- *   is set, otherwise ignored.
- * @param flags Flag bits from ::gxio_mpipe_alloc_flags_e.
- * @return Index of first allocated buffer eDMA ring, or
- * ::GXIO_MPIPE_ERR_NO_EDMA_RING if allocation failed.
- */
-extern int gxio_mpipe_alloc_edma_rings(gxio_mpipe_context_t *context,
-				       unsigned int count, unsigned int first,
-				       unsigned int flags);
-
-/* Initialize an eDMA ring, using the given memory and size.
- *
- * @param context An initialized mPIPE context.
- * @param ering The eDMA ring index.
- * @param channel The channel to use.  This must be one of the channels
- * associated with the context's set of open links.
- * @param mem A physically contiguous region of memory to be filled
- * with a ring of ::gxio_mpipe_edesc_t structures.
- * @param mem_size Number of bytes in the ring.  Must be 512, 2048,
- * 8192 or 65536, times 16 (i.e. sizeof(gxio_mpipe_edesc_t)).
- * @param mem_flags ::gxio_mpipe_mem_flags_e memory flags.
- *
- * @return 0 on success, ::GXIO_MPIPE_ERR_BAD_EDMA_RING or
- * ::GXIO_ERR_INVAL_MEMORY_SIZE on failure.
- */
-extern int gxio_mpipe_init_edma_ring(gxio_mpipe_context_t *context,
-				     unsigned int ering, unsigned int channel,
-				     void *mem, size_t mem_size,
-				     unsigned int mem_flags);
-
-/* Set the "max_blks", "min_snf_blks", and "db" fields of
- * ::MPIPE_EDMA_RG_INIT_DAT_THRESH_t for a given edma ring.
- *
- * The global pool of dynamic blocks will be automatically adjusted.
- *
- * This function should not be called after any egress has been done
- * on the edma ring.
- *
- * Most applications should just use gxio_mpipe_equeue_set_snf_size().
- *
- * @param context An initialized mPIPE context.
- * @param ering The eDMA ring index.
- * @param max_blks The number of blocks to dedicate to the ring
- * (normally min_snf_blks + 1).  Must be greater than min_snf_blocks.
- * @param min_snf_blks The number of blocks which must be stored
- * prior to starting to send the packet (normally 12).
- * @param db Whether to allow use of dynamic blocks by the ring
- * (normally 1).
- *
- * @return 0 on success, negative on error.
- */
-extern int gxio_mpipe_config_edma_ring_blks(gxio_mpipe_context_t *context,
-					    unsigned int ering,
-					    unsigned int max_blks,
-					    unsigned int min_snf_blks,
-					    unsigned int db);
-
-/*****************************************************************
- *                      Classifier Program                        *
- ******************************************************************/
-
-/*
- *
- * Functions for loading or configuring the mPIPE classifier program.
- *
- * The mPIPE classification processors all run a special "classifier"
- * program which, for each incoming packet, parses the packet headers,
- * encodes some packet metadata in the "idesc", and either drops the
- * packet, or picks a notif ring to handle the packet, and a buffer
- * stack to contain the packet, usually based on the channel, VLAN,
- * dMAC, flow hash, and packet size, under the guidance of the "rules"
- * API described below.
- *
- * @section gxio_mpipe_classifier_default Default Classifier
- *
- * The MDE provides a simple "default" classifier program.  It is
- * shipped as source in "$TILERA_ROOT/src/sys/mpipe/classifier.c",
- * which serves as its official documentation.  It is shipped as a
- * binary program in "$TILERA_ROOT/tile/boot/classifier", which is
- * automatically included in bootroms created by "tile-monitor", and
- * is automatically loaded by the hypervisor at boot time.
- *
- * The L2 analysis handles LLC packets, SNAP packets, and "VLAN
- * wrappers" (keeping the outer VLAN).
- *
- * The L3 analysis handles IPv4 and IPv6, dropping packets with bad
- * IPv4 header checksums, requesting computation of a TCP/UDP checksum
- * if appropriate, and hashing the dest and src IP addresses, plus the
- * ports for TCP/UDP packets, into the flow hash.  No special analysis
- * is done for "fragmented" packets or "tunneling" protocols.  Thus,
- * the first fragment of a fragmented TCP/UDP packet is hashed using
- * src/dest IP address and ports and all subsequent fragments are only
- * hashed according to src/dest IP address.
- *
- * The L3 analysis handles other packets too, hashing the dMAC
- * smac into a flow hash.
- *
- * The channel, VLAN, and dMAC used to pick a "rule" (see the
- * "rules" APIs below), which in turn is used to pick a buffer stack
- * (based on the packet size) and a bucket (based on the flow hash).
- *
- * To receive traffic matching a particular (channel/VLAN/dMAC
- * pattern, an application should allocate its own buffer stacks and
- * load balancer buckets, and map traffic to those stacks and buckets,
- * as decribed by the "rules" API below.
- *
- * Various packet metadata is encoded in the idesc.  The flow hash is
- * four bytes at 0x0C.  The VLAN is two bytes at 0x10.  The ethtype is
- * two bytes at 0x12.  The l3 start is one byte at 0x14.  The l4 start
- * is one byte at 0x15 for IPv4 and IPv6 packets, and otherwise zero.
- * The protocol is one byte at 0x16 for IPv4 and IPv6 packets, and
- * otherwise zero.
- *
- * @section gxio_mpipe_classifier_custom Custom Classifiers.
- *
- * A custom classifier may be created using "tile-mpipe-cc" with a
- * customized version of the default classifier sources.
- *
- * The custom classifier may be included in bootroms using the
- * "--classifier" option to "tile-monitor", or loaded dynamically
- * using gxio_mpipe_classifier_load_from_file().
- *
- * Be aware that "extreme" customizations may break the assumptions of
- * the "rules" APIs described below, but simple customizations, such
- * as adding new packet metadata, should be fine.
- */
-
-/* A set of classifier rules, plus a context. */
-typedef struct {
-
-	/* The context. */
-	gxio_mpipe_context_t *context;
-
-	/* The actual rules. */
-	gxio_mpipe_rules_list_t list;
-
-} gxio_mpipe_rules_t;
-
-/* Initialize a classifier program rules list.
- *
- * This function can be called on a previously initialized rules list
- * to discard any previously added rules.
- *
- * @param rules Rules list to initialize.
- * @param context An initialized mPIPE context.
- */
-extern void gxio_mpipe_rules_init(gxio_mpipe_rules_t *rules,
-				  gxio_mpipe_context_t *context);
-
-/* Begin a new rule on the indicated rules list.
- *
- * Note that an empty rule matches all packets, but an empty rule list
- * matches no packets.
- *
- * @param rules Rules list to which new rule is appended.
- * @param bucket First load balancer bucket to which packets will be
- * delivered.
- * @param num_buckets Number of buckets (must be a power of two) across
- * which packets will be distributed based on the "flow hash".
- * @param stacks Either NULL, to assign each packet to the smallest
- * initialized buffer stack which does not induce chaining (and to
- * drop packets which exceed the largest initialized buffer stack
- * buffer size), or an array, with each entry indicating which buffer
- * stack should be used for packets up to that size (with 255
- * indicating that those packets should be dropped).
- * @return 0 on success, or a negative error code on failure.
- */
-extern int gxio_mpipe_rules_begin(gxio_mpipe_rules_t *rules,
-				  unsigned int bucket,
-				  unsigned int num_buckets,
-				  gxio_mpipe_rules_stacks_t *stacks);
-
-/* Set the headroom of the current rule.
- *
- * @param rules Rules list whose current rule will be modified.
- * @param headroom The headroom.
- * @return 0 on success, or a negative error code on failure.
- */
-extern int gxio_mpipe_rules_set_headroom(gxio_mpipe_rules_t *rules,
-					 uint8_t headroom);
-
-/* Indicate that packets from a particular channel can be delivered
- * to the buckets and buffer stacks associated with the current rule.
- *
- * Channels added must be associated with links opened by the mPIPE context
- * used in gxio_mpipe_rules_init().  A rule with no channels is equivalent
- * to a rule naming all such associated channels.
- *
- * @param rules Rules list whose current rule will be modified.
- * @param channel The channel to add.
- * @return 0 on success, or a negative error code on failure.
- */
-extern int gxio_mpipe_rules_add_channel(gxio_mpipe_rules_t *rules,
-					unsigned int channel);
-
-/* Commit rules.
- *
- * The rules are sent to the hypervisor, where they are combined with
- * the rules from other apps, and used to program the hardware classifier.
- *
- * Note that if this function returns an error, then the rules will NOT
- * have been committed, even if the error is due to interactions with
- * rules from another app.
- *
- * @param rules Rules list to commit.
- * @return 0 on success, or a negative error code on failure.
- */
-extern int gxio_mpipe_rules_commit(gxio_mpipe_rules_t *rules);
-
-/*****************************************************************
- *                     Ingress Queue Wrapper                      *
- ******************************************************************/
-
-/*
- *
- * Convenience functions for receiving packets from a NotifRing and
- * sending packets via an eDMA ring.
- *
- * The mpipe ingress and egress hardware uses shared memory packet
- * descriptors to describe packets that have arrived on ingress or
- * are destined for egress.  These descriptors are stored in shared
- * memory ring buffers and written or read by hardware as necessary.
- * The gxio library provides wrapper functions that manage the head and
- * tail pointers for these rings, allowing the user to easily read or
- * write packet descriptors.
- *
- * The initialization interface for ingress and egress rings is quite
- * similar.  For example, to create an ingress queue, the user passes
- * a ::gxio_mpipe_iqueue_t state object, a ring number from
- * gxio_mpipe_alloc_notif_rings(), and the address of memory to hold a
- * ring buffer to the gxio_mpipe_iqueue_init() function.  The function
- * returns success when the state object has been initialized and the
- * hardware configured to deliver packets to the specified ring
- * buffer.  Similarly, gxio_mpipe_equeue_init() takes a
- * ::gxio_mpipe_equeue_t state object, a ring number from
- * gxio_mpipe_alloc_edma_rings(), and a shared memory buffer.
- *
- * @section gxio_mpipe_iqueue Working with Ingress Queues
- *
- * Once initialized, the gxio_mpipe_iqueue_t API provides two flows
- * for getting the ::gxio_mpipe_idesc_t packet descriptor associated
- * with incoming packets.  The simplest is to call
- * gxio_mpipe_iqueue_get() or gxio_mpipe_iqueue_try_get().  These
- * functions copy the oldest packet descriptor out of the NotifRing and
- * into a descriptor provided by the caller.  They also immediately
- * inform the hardware that a descriptor has been processed.
- *
- * For applications with stringent performance requirements, higher
- * efficiency can be achieved by avoiding the packet descriptor copy
- * and processing multiple descriptors at once.  The
- * gxio_mpipe_iqueue_peek() and gxio_mpipe_iqueue_try_peek() functions
- * allow such optimizations.  These functions provide a pointer to the
- * next valid ingress descriptor in the NotifRing's shared memory ring
- * buffer, and a count of how many contiguous descriptors are ready to
- * be processed.  The application can then process any number of those
- * descriptors in place, calling gxio_mpipe_iqueue_consume() to inform
- * the hardware after each one has been processed.
- *
- * @section gxio_mpipe_equeue Working with Egress Queues
- *
- * Similarly, the egress queue API provides a high-performance
- * interface plus a simple wrapper for use in posting
- * ::gxio_mpipe_edesc_t egress packet descriptors.  The simple
- * version, gxio_mpipe_equeue_put(), allows the programmer to wait for
- * an eDMA ring slot to become available and write a single descriptor
- * into the ring.
- *
- * Alternatively, you can reserve slots in the eDMA ring using
- * gxio_mpipe_equeue_reserve() or gxio_mpipe_equeue_try_reserve(), and
- * then fill in each slot using gxio_mpipe_equeue_put_at().  This
- * capability can be used to amortize the cost of reserving slots
- * across several packets.  It also allows gather operations to be
- * performed on a shared equeue, by ensuring that the edescs for all
- * the fragments are all contiguous in the eDMA ring.
- *
- * The gxio_mpipe_equeue_reserve() and gxio_mpipe_equeue_try_reserve()
- * functions return a 63-bit "completion slot", which is actually a
- * sequence number, the low bits of which indicate the ring buffer
- * index and the high bits the number of times the application has
- * gone around the egress ring buffer.  The extra bits allow an
- * application to check for egress completion by calling
- * gxio_mpipe_equeue_is_complete() to see whether a particular 'slot'
- * number has finished.  Given the maximum packet rates of the Gx
- * processor, the 63-bit slot number will never wrap.
- *
- * In practice, most applications use the ::gxio_mpipe_edesc_t::hwb
- * bit to indicate that the buffers containing egress packet data
- * should be pushed onto a buffer stack when egress is complete.  Such
- * applications generally do not need to know when an egress operation
- * completes (since there is no need to free a buffer post-egress),
- * and thus can use the optimized gxio_mpipe_equeue_reserve_fast() or
- * gxio_mpipe_equeue_try_reserve_fast() functions, which return a 24
- * bit "slot", instead of a 63-bit "completion slot".
- *
- * Once a slot has been "reserved", it MUST be filled.  If the
- * application reserves a slot and then decides that it does not
- * actually need it, it can set the ::gxio_mpipe_edesc_t::ns (no send)
- * bit on the descriptor passed to gxio_mpipe_equeue_put_at() to
- * indicate that no data should be sent.  This technique can also be
- * used to drop an incoming packet, instead of forwarding it, since
- * any buffer will still be pushed onto the buffer stack when the
- * egress descriptor is processed.
- */
-
-/* A convenient interface to a NotifRing, for use by a single thread.
- */
-typedef struct {
-
-	/* The context. */
-	gxio_mpipe_context_t *context;
-
-	/* The actual NotifRing. */
-	gxio_mpipe_idesc_t *idescs;
-
-	/* The number of entries. */
-	unsigned long num_entries;
-
-	/* The number of entries minus one. */
-	unsigned long mask_num_entries;
-
-	/* The log2() of the number of entries. */
-	unsigned long log2_num_entries;
-
-	/* The next entry. */
-	unsigned int head;
-
-	/* The NotifRing id. */
-	unsigned int ring;
-
-#ifdef __BIG_ENDIAN__
-	/* The number of byteswapped entries. */
-	unsigned int swapped;
-#endif
-
-} gxio_mpipe_iqueue_t;
-
-/* Initialize an "iqueue".
- *
- * Takes the iqueue plus the same args as gxio_mpipe_init_notif_ring().
- */
-extern int gxio_mpipe_iqueue_init(gxio_mpipe_iqueue_t *iqueue,
-				  gxio_mpipe_context_t *context,
-				  unsigned int ring,
-				  void *mem, size_t mem_size,
-				  unsigned int mem_flags);
-
-/* Advance over some old entries in an iqueue.
- *
- * Please see the documentation for gxio_mpipe_iqueue_consume().
- *
- * @param iqueue An ingress queue initialized via gxio_mpipe_iqueue_init().
- * @param count The number of entries to advance over.
- */
-static inline void gxio_mpipe_iqueue_advance(gxio_mpipe_iqueue_t *iqueue,
-					     int count)
-{
-	/* Advance with proper wrap. */
-	int head = iqueue->head + count;
-	iqueue->head =
-		(head & iqueue->mask_num_entries) +
-		(head >> iqueue->log2_num_entries);
-
-#ifdef __BIG_ENDIAN__
-	/* HACK: Track swapped entries. */
-	iqueue->swapped -= count;
-#endif
-}
-
-/* Release the ring and bucket for an old entry in an iqueue.
- *
- * Releasing the ring allows more packets to be delivered to the ring.
- *
- * Releasing the bucket allows flows using the bucket to be moved to a
- * new ring when using GXIO_MPIPE_BUCKET_DYNAMIC_FLOW_AFFINITY.
- *
- * This function is shorthand for "gxio_mpipe_credit(iqueue->context,
- * iqueue->ring, idesc->bucket_id, 1)", and it may be more convenient
- * to make that underlying call, using those values, instead of
- * tracking the entire "idesc".
- *
- * If packet processing is deferred, optimal performance requires that
- * the releasing be deferred as well.
- *
- * Please see the documentation for gxio_mpipe_iqueue_consume().
- *
- * @param iqueue An ingress queue initialized via gxio_mpipe_iqueue_init().
- * @param idesc The descriptor which was processed.
- */
-static inline void gxio_mpipe_iqueue_release(gxio_mpipe_iqueue_t *iqueue,
-					     gxio_mpipe_idesc_t *idesc)
-{
-	gxio_mpipe_credit(iqueue->context, iqueue->ring, idesc->bucket_id, 1);
-}
-
-/* Consume a packet from an "iqueue".
- *
- * After processing packets peeked at via gxio_mpipe_iqueue_peek()
- * or gxio_mpipe_iqueue_try_peek(), you must call this function, or
- * gxio_mpipe_iqueue_advance() plus gxio_mpipe_iqueue_release(), to
- * advance over those entries, and release their rings and buckets.
- *
- * You may call this function as each packet is processed, or you can
- * wait until several packets have been processed.
- *
- * Note that if you are using a single bucket, and you are handling
- * batches of N packets, then you can replace several calls to this
- * function with calls to "gxio_mpipe_iqueue_advance(iqueue, N)" and
- * "gxio_mpipe_credit(iqueue->context, iqueue->ring, bucket, N)".
- *
- * Note that if your classifier sets "idesc->nr", then you should
- * explicitly call "gxio_mpipe_iqueue_advance(iqueue, idesc)" plus
- * "gxio_mpipe_credit(iqueue->context, iqueue->ring, -1, 1)", to
- * avoid incorrectly crediting the (unused) bucket.
- *
- * @param iqueue An ingress queue initialized via gxio_mpipe_iqueue_init().
- * @param idesc The descriptor which was processed.
- */
-static inline void gxio_mpipe_iqueue_consume(gxio_mpipe_iqueue_t *iqueue,
-					     gxio_mpipe_idesc_t *idesc)
-{
-	gxio_mpipe_iqueue_advance(iqueue, 1);
-	gxio_mpipe_iqueue_release(iqueue, idesc);
-}
-
-/* Peek at the next packet(s) in an "iqueue", without waiting.
- *
- * If no packets are available, fills idesc_ref with NULL, and then
- * returns ::GXIO_MPIPE_ERR_IQUEUE_EMPTY.  Otherwise, fills idesc_ref
- * with the address of the next valid packet descriptor, and returns
- * the maximum number of valid descriptors which can be processed.
- * You may process fewer descriptors if desired.
- *
- * Call gxio_mpipe_iqueue_consume() on each packet once it has been
- * processed (or dropped), to allow more packets to be delivered.
- *
- * @param iqueue An ingress queue initialized via gxio_mpipe_iqueue_init().
- * @param idesc_ref A pointer to a packet descriptor pointer.
- * @return The (positive) number of packets which can be processed,
- * or ::GXIO_MPIPE_ERR_IQUEUE_EMPTY if no packets are available.
- */
-static inline int gxio_mpipe_iqueue_try_peek(gxio_mpipe_iqueue_t *iqueue,
-					     gxio_mpipe_idesc_t **idesc_ref)
-{
-	gxio_mpipe_idesc_t *next;
-
-	uint64_t head = iqueue->head;
-	uint64_t tail = __gxio_mmio_read(iqueue->idescs);
-
-	/* Available entries. */
-	uint64_t avail =
-		(tail >= head) ? (tail - head) : (iqueue->num_entries - head);
-
-	if (avail == 0) {
-		*idesc_ref = NULL;
-		return GXIO_MPIPE_ERR_IQUEUE_EMPTY;
-	}
-
-	next = &iqueue->idescs[head];
-
-	/* ISSUE: Is this helpful? */
-	__insn_prefetch(next);
-
-#ifdef __BIG_ENDIAN__
-	/* HACK: Swap new entries directly in memory. */
-	{
-		int i, j;
-		for (i = iqueue->swapped; i < avail; i++) {
-			for (j = 0; j < 8; j++)
-				next[i].words[j] =
-					__builtin_bswap64(next[i].words[j]);
-		}
-		iqueue->swapped = avail;
-	}
-#endif
-
-	*idesc_ref = next;
-
-	return avail;
-}
-
-/* Drop a packet by pushing its buffer (if appropriate).
- *
- * NOTE: The caller must still call gxio_mpipe_iqueue_consume() if idesc
- * came from gxio_mpipe_iqueue_try_peek() or gxio_mpipe_iqueue_peek().
- *
- * @param iqueue An ingress queue initialized via gxio_mpipe_iqueue_init().
- * @param idesc A packet descriptor.
- */
-static inline void gxio_mpipe_iqueue_drop(gxio_mpipe_iqueue_t *iqueue,
-					  gxio_mpipe_idesc_t *idesc)
-{
-	/* FIXME: Handle "chaining" properly. */
-
-	if (!idesc->be) {
-		unsigned char *va = gxio_mpipe_idesc_get_va(idesc);
-		gxio_mpipe_push_buffer(iqueue->context, idesc->stack_idx, va);
-	}
-}
-
-/*****************************************************************
- *                      Egress Queue Wrapper                      *
- ******************************************************************/
-
-/* A convenient, thread-safe interface to an eDMA ring. */
-typedef struct {
-
-	/* State object for tracking head and tail pointers. */
-	__gxio_dma_queue_t dma_queue;
-
-	/* The ring entries. */
-	gxio_mpipe_edesc_t *edescs;
-
-	/* The number of entries minus one. */
-	unsigned long mask_num_entries;
-
-	/* The log2() of the number of entries. */
-	unsigned long log2_num_entries;
-
-	/* The context. */
-	gxio_mpipe_context_t *context;
-
-	/* The ering. */
-	unsigned int ering;
-
-	/* The channel. */
-	unsigned int channel;
-
-} gxio_mpipe_equeue_t;
-
-/* Initialize an "equeue".
- *
- * This function uses gxio_mpipe_init_edma_ring() to initialize the
- * underlying edma_ring using the provided arguments.
- *
- * @param equeue An egress queue to be initialized.
- * @param context An initialized mPIPE context.
- * @param ering The eDMA ring index.
- * @param channel The channel to use.  This must be one of the channels
- * associated with the context's set of open links.
- * @param mem A physically contiguous region of memory to be filled
- * with a ring of ::gxio_mpipe_edesc_t structures.
- * @param mem_size Number of bytes in the ring.  Must be 512, 2048,
- * 8192 or 65536, times 16 (i.e. sizeof(gxio_mpipe_edesc_t)).
- * @param mem_flags ::gxio_mpipe_mem_flags_e memory flags.
- *
- * @return 0 on success, ::GXIO_MPIPE_ERR_BAD_EDMA_RING or
- * ::GXIO_ERR_INVAL_MEMORY_SIZE on failure.
- */
-extern int gxio_mpipe_equeue_init(gxio_mpipe_equeue_t *equeue,
-				  gxio_mpipe_context_t *context,
-				  unsigned int ering,
-				  unsigned int channel,
-				  void *mem, unsigned int mem_size,
-				  unsigned int mem_flags);
-
-/* Reserve completion slots for edescs.
- *
- * Use gxio_mpipe_equeue_put_at() to actually populate the slots.
- *
- * This function is slower than gxio_mpipe_equeue_reserve_fast(), but
- * returns a full 64 bit completion slot, which can be used with
- * gxio_mpipe_equeue_is_complete().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param num Number of slots to reserve (must be non-zero).
- * @return The first reserved completion slot, or a negative error code.
- */
-static inline int64_t gxio_mpipe_equeue_reserve(gxio_mpipe_equeue_t *equeue,
-						unsigned int num)
-{
-	return __gxio_dma_queue_reserve_aux(&equeue->dma_queue, num, true);
-}
-
-/* Reserve completion slots for edescs, if possible.
- *
- * Use gxio_mpipe_equeue_put_at() to actually populate the slots.
- *
- * This function is slower than gxio_mpipe_equeue_try_reserve_fast(),
- * but returns a full 64 bit completion slot, which can be used with
- * gxio_mpipe_equeue_is_complete().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param num Number of slots to reserve (must be non-zero).
- * @return The first reserved completion slot, or a negative error code.
- */
-static inline int64_t gxio_mpipe_equeue_try_reserve(gxio_mpipe_equeue_t
-						    *equeue, unsigned int num)
-{
-	return __gxio_dma_queue_reserve_aux(&equeue->dma_queue, num, false);
-}
-
-/* Reserve slots for edescs.
- *
- * Use gxio_mpipe_equeue_put_at() to actually populate the slots.
- *
- * This function is faster than gxio_mpipe_equeue_reserve(), but
- * returns a 24 bit slot (instead of a 64 bit completion slot), which
- * thus cannot be used with gxio_mpipe_equeue_is_complete().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param num Number of slots to reserve (should be non-zero).
- * @return The first reserved slot, or a negative error code.
- */
-static inline int64_t gxio_mpipe_equeue_reserve_fast(gxio_mpipe_equeue_t
-						     *equeue, unsigned int num)
-{
-	return __gxio_dma_queue_reserve(&equeue->dma_queue, num, true, false);
-}
-
-/* Reserve slots for edescs, if possible.
- *
- * Use gxio_mpipe_equeue_put_at() to actually populate the slots.
- *
- * This function is faster than gxio_mpipe_equeue_try_reserve(), but
- * returns a 24 bit slot (instead of a 64 bit completion slot), which
- * thus cannot be used with gxio_mpipe_equeue_is_complete().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param num Number of slots to reserve (should be non-zero).
- * @return The first reserved slot, or a negative error code.
- */
-static inline int64_t gxio_mpipe_equeue_try_reserve_fast(gxio_mpipe_equeue_t
-							 *equeue,
-							 unsigned int num)
-{
-	return __gxio_dma_queue_reserve(&equeue->dma_queue, num, false, false);
-}
-
-/*
- * HACK: This helper function tricks gcc 4.6 into avoiding saving
- * a copy of "edesc->words[0]" on the stack for no obvious reason.
- */
-
-static inline void gxio_mpipe_equeue_put_at_aux(gxio_mpipe_equeue_t *equeue,
-						uint_reg_t ew[2],
-						unsigned long slot)
-{
-	unsigned long edma_slot = slot & equeue->mask_num_entries;
-	gxio_mpipe_edesc_t *edesc_p = &equeue->edescs[edma_slot];
-
-	/*
-	 * ISSUE: Could set eDMA ring to be on generation 1 at start, which
-	 * would avoid the negation here, perhaps allowing "__insn_bfins()".
-	 */
-	ew[0] |= !((slot >> equeue->log2_num_entries) & 1);
-
-	/*
-	 * NOTE: We use "__gxio_mpipe_write()", plus the fact that the eDMA
-	 * queue alignment restrictions ensure that these two words are on
-	 * the same cacheline, to force proper ordering between the stores.
-	 */
-	__gxio_mmio_write64(&edesc_p->words[1], ew[1]);
-	__gxio_mmio_write64(&edesc_p->words[0], ew[0]);
-}
-
-/* Post an edesc to a given slot in an equeue.
- *
- * This function copies the supplied edesc into entry "slot mod N" in
- * the underlying ring, setting the "gen" bit to the appropriate value
- * based on "(slot mod N*2)", where "N" is the size of the ring.  Note
- * that the higher bits of slot are unused, and thus, this function
- * can handle "slots" as well as "completion slots".
- *
- * Normally this function is used to fill in slots reserved by
- * gxio_mpipe_equeue_try_reserve(), gxio_mpipe_equeue_reserve(),
- * gxio_mpipe_equeue_try_reserve_fast(), or
- * gxio_mpipe_equeue_reserve_fast(),
- *
- * This function can also be used without "reserving" slots, if the
- * application KNOWS that the ring can never overflow, for example, by
- * pushing fewer buffers into the buffer stacks than there are total
- * slots in the equeue, but this is NOT recommended.
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param edesc The egress descriptor to be posted.
- * @param slot An egress slot (only the low bits are actually used).
- */
-static inline void gxio_mpipe_equeue_put_at(gxio_mpipe_equeue_t *equeue,
-					    gxio_mpipe_edesc_t edesc,
-					    unsigned long slot)
-{
-	gxio_mpipe_equeue_put_at_aux(equeue, edesc.words, slot);
-}
-
-/* Post an edesc to the next slot in an equeue.
- *
- * This is a convenience wrapper around
- * gxio_mpipe_equeue_reserve_fast() and gxio_mpipe_equeue_put_at().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param edesc The egress descriptor to be posted.
- * @return 0 on success.
- */
-static inline int gxio_mpipe_equeue_put(gxio_mpipe_equeue_t *equeue,
-					gxio_mpipe_edesc_t edesc)
-{
-	int64_t slot = gxio_mpipe_equeue_reserve_fast(equeue, 1);
-	if (slot < 0)
-		return (int)slot;
-
-	gxio_mpipe_equeue_put_at(equeue, edesc, slot);
-
-	return 0;
-}
-
-/* Ask the mPIPE hardware to egress outstanding packets immediately.
- *
- * This call is not necessary, but may slightly reduce overall latency.
- *
- * Technically, you should flush all gxio_mpipe_equeue_put_at() writes
- * to memory before calling this function, to ensure the descriptors
- * are visible in memory before the mPIPE hardware actually looks for
- * them.  But this should be very rare, and the only side effect would
- * be increased latency, so it is up to the caller to decide whether
- * or not to flush memory.
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- */
-static inline void gxio_mpipe_equeue_flush(gxio_mpipe_equeue_t *equeue)
-{
-	/* Use "ring_idx = 0" and "count = 0" to "wake up" the eDMA ring. */
-	MPIPE_EDMA_POST_REGION_VAL_t val = { {0} };
-	/* Flush the write buffers. */
-	__insn_flushwb();
-	__gxio_mmio_write(equeue->dma_queue.post_region_addr, val.word);
-}
-
-/* Determine if a given edesc has been completed.
- *
- * Note that this function requires a "completion slot", and thus may
- * NOT be used with a "slot" from gxio_mpipe_equeue_reserve_fast() or
- * gxio_mpipe_equeue_try_reserve_fast().
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param completion_slot The completion slot used by the edesc.
- * @param update If true, and the desc does not appear to have completed
- * yet, then update any software cache of the hardware completion counter,
- * and check again.  This should normally be true.
- * @return True iff the given edesc has been completed.
- */
-static inline int gxio_mpipe_equeue_is_complete(gxio_mpipe_equeue_t *equeue,
-						int64_t completion_slot,
-						int update)
-{
-	return __gxio_dma_queue_is_complete(&equeue->dma_queue,
-					    completion_slot, update);
-}
-
-/* Set the snf (store and forward) size for an equeue.
- *
- * The snf size for an equeue defaults to 1536, and encodes the size
- * of the largest packet for which egress is guaranteed to avoid
- * transmission underruns and/or corrupt checksums under heavy load.
- *
- * The snf size affects a global resource pool which cannot support,
- * for example, all 24 equeues each requesting an snf size of 8K.
- *
- * To ensure that jumbo packets can be egressed properly, the snf size
- * should be set to the size of the largest possible packet, which
- * will usually be limited by the size of the app's largest buffer.
- *
- * This is a convenience wrapper around
- * gxio_mpipe_config_edma_ring_blks().
- *
- * This function should not be called after any egress has been done
- * on the equeue.
- *
- * @param equeue An egress queue initialized via gxio_mpipe_equeue_init().
- * @param size The snf size, in bytes.
- * @return Zero on success, negative error otherwise.
- */
-static inline int gxio_mpipe_equeue_set_snf_size(gxio_mpipe_equeue_t *equeue,
-						 size_t size)
-{
-	int blks = (size + 127) / 128;
-	return gxio_mpipe_config_edma_ring_blks(equeue->context, equeue->ering,
-						blks + 1, blks, 1);
-}
-
-/*****************************************************************
- *                        Link Management                         *
- ******************************************************************/
-
-/*
- *
- * Functions for manipulating and sensing the state and configuration
- * of physical network links.
- *
- * @section gxio_mpipe_link_perm Link Permissions
- *
- * Opening a link (with gxio_mpipe_link_open()) requests a set of link
- * permissions, which control what may be done with the link, and potentially
- * what permissions may be granted to other processes.
- *
- * Data permission allows the process to receive packets from the link by
- * specifying the link's channel number in mPIPE packet distribution rules,
- * and to send packets to the link by using the link's channel number as
- * the target for an eDMA ring.
- *
- * Stats permission allows the process to retrieve link attributes (such as
- * the speeds it is capable of running at, or whether it is currently up), and
- * to read and write certain statistics-related registers in the link's MAC.
- *
- * Control permission allows the process to retrieve and modify link attributes
- * (so that it may, for example, bring the link up and take it down), and
- * read and write many registers in the link's MAC and PHY.
- *
- * Any permission may be requested as shared, which allows other processes
- * to also request shared permission, or exclusive, which prevents other
- * processes from requesting it.  In keeping with GXIO's typical usage in
- * an embedded environment, the defaults for all permissions are shared.
- *
- * Permissions are granted on a first-come, first-served basis, so if two
- * applications request an exclusive permission on the same link, the one
- * to run first will win.  Note, however, that some system components, like
- * the kernel Ethernet driver, may get an opportunity to open links before
- * any applications run.
- *
- * @section gxio_mpipe_link_names Link Names
- *
- * Link names are of the form gbe<em>number</em> (for Gigabit Ethernet),
- * xgbe<em>number</em> (for 10 Gigabit Ethernet), loop<em>number</em> (for
- * internal mPIPE loopback), or ilk<em>number</em>/<em>channel</em>
- * (for Interlaken links); for instance, gbe0, xgbe1, loop3, and
- * ilk0/12 are all possible link names.  The correspondence between
- * the link name and an mPIPE instance number or mPIPE channel number is
- * system-dependent; all links will not exist on all systems, and the set
- * of numbers used for a particular link type may not start at zero and may
- * not be contiguous.  Use gxio_mpipe_link_enumerate() to retrieve the set of
- * links which exist on a system, and always use gxio_mpipe_link_instance()
- * to determine which mPIPE controls a particular link.
- *
- * Note that in some cases, links may share hardware, such as PHYs, or
- * internal mPIPE buffers; in these cases, only one of the links may be
- * opened at a time.  This is especially common with xgbe and gbe ports,
- * since each xgbe port uses 4 SERDES lanes, each of which may also be
- * configured as one gbe port.
- *
- * @section gxio_mpipe_link_states Link States
- *
- * The mPIPE link management model revolves around three different states,
- * which are maintained for each link:
- *
- * 1. The <em>current</em> link state: is the link up now, and if so, at
- *    what speed?
- *
- * 2. The <em>desired</em> link state: what do we want the link state to be?
- *    The system is always working to make this state the current state;
- *    thus, if the desired state is up, and the link is down, we'll be
- *    constantly trying to bring it up, automatically.
- *
- * 3. The <em>possible</em> link state: what speeds are valid for this
- *    particular link?  Or, in other words, what are the capabilities of
- *    the link hardware?
- *
- * These link states are not, strictly speaking, related to application
- * state; they may be manipulated at any time, whether or not the link
- * is currently being used for data transfer.  However, for convenience,
- * gxio_mpipe_link_open() and gxio_mpipe_link_close() (or application exit)
- * can affect the link state.  These implicit link management operations
- * may be modified or disabled by the use of link open flags.
- *
- * From an application, you can use gxio_mpipe_link_get_attr()
- * and gxio_mpipe_link_set_attr() to manipulate the link states.
- * gxio_mpipe_link_get_attr() with ::GXIO_MPIPE_LINK_POSSIBLE_STATE
- * gets you the possible link state.  gxio_mpipe_link_get_attr() with
- * ::GXIO_MPIPE_LINK_CURRENT_STATE gets you the current link state.
- * Finally, gxio_mpipe_link_set_attr() and gxio_mpipe_link_get_attr()
- * with ::GXIO_MPIPE_LINK_DESIRED_STATE allow you to modify or retrieve
- * the desired link state.
- *
- * If you want to manage a link from a part of your application which isn't
- * involved in packet processing, you can use the ::GXIO_MPIPE_LINK_NO_DATA
- * flags on a gxio_mpipe_link_open() call.  This opens the link, but does
- * not request data permission, so it does not conflict with any exclusive
- * permissions which may be held by other processes.  You can then can use
- * gxio_mpipe_link_get_attr() and gxio_mpipe_link_set_attr() on this link
- * object to bring up or take down the link.
- *
- * Some links support link state bits which support various loopback
- * modes. ::GXIO_MPIPE_LINK_LOOP_MAC tests datapaths within the Tile
- * Processor itself; ::GXIO_MPIPE_LINK_LOOP_PHY tests the datapath between
- * the Tile Processor and the external physical layer interface chip; and
- * ::GXIO_MPIPE_LINK_LOOP_EXT tests the entire network datapath with the
- * aid of an external loopback connector.  In addition to enabling hardware
- * testing, such configuration can be useful for software testing, as well.
- *
- * When LOOP_MAC or LOOP_PHY is enabled, packets transmitted on a channel
- * will be received by that channel, instead of being emitted on the
- * physical link, and packets received on the physical link will be ignored.
- * Other than that, all standard GXIO operations work as you might expect.
- * Note that loopback operation requires that the link be brought up using
- * one or more of the GXIO_MPIPE_LINK_SPEED_xxx link state bits.
- *
- * Those familiar with previous versions of the MDE on TILEPro hardware
- * will notice significant similarities between the NetIO link management
- * model and the mPIPE link management model.  However, the NetIO model
- * was developed in stages, and some of its features -- for instance,
- * the default setting of certain flags -- were shaped by the need to be
- * compatible with previous versions of NetIO.  Since the features provided
- * by the mPIPE hardware and the mPIPE GXIO library are significantly
- * different than those provided by NetIO, in some cases, we have made
- * different choices in the mPIPE link management API.  Thus, please read
- * this documentation carefully before assuming that mPIPE link management
- * operations are exactly equivalent to their NetIO counterparts.
- */
-
-/* An object used to manage mPIPE link state and resources. */
-typedef struct {
-	/* The overall mPIPE context. */
-	gxio_mpipe_context_t *context;
-
-	/* The channel number used by this link. */
-	uint8_t channel;
-
-	/* The MAC index used by this link. */
-	uint8_t mac;
-} gxio_mpipe_link_t;
-
-/* Translate a link name to the instance number of the mPIPE shim which is
- *  connected to that link.  This call does not verify whether the link is
- *  currently available, and does not reserve any link resources;
- *  gxio_mpipe_link_open() must be called to perform those functions.
- *
- *  Typically applications will call this function to translate a link name
- *  to an mPIPE instance number; call gxio_mpipe_init(), passing it that
- *  instance number, to initialize the mPIPE shim; and then call
- *  gxio_mpipe_link_open(), passing it the same link name plus the mPIPE
- *  context, to configure the link.
- *
- * @param link_name Name of the link; see @ref gxio_mpipe_link_names.
- * @return The mPIPE instance number which is associated with the named
- *  link, or a negative error code (::GXIO_ERR_NO_DEVICE) if the link does
- *  not exist.
- */
-extern int gxio_mpipe_link_instance(const char *link_name);
-
-/* Retrieve one of this system's legal link names, and its MAC address.
- *
- * @param index Link name index.  If a system supports N legal link names,
- *  then indices between 0 and N - 1, inclusive, each correspond to one of
- *  those names.  Thus, to retrieve all of a system's legal link names,
- *  call this function in a loop, starting with an index of zero, and
- *  incrementing it once per iteration until -1 is returned.
- * @param link_name Pointer to the buffer which will receive the retrieved
- *  link name.  The buffer should contain space for at least
- *  ::GXIO_MPIPE_LINK_NAME_LEN bytes; the returned name, including the
- *  terminating null byte, will be no longer than that.
- * @param link_name Pointer to the buffer which will receive the retrieved
- *  MAC address.  The buffer should contain space for at least 6 bytes.
- * @return Zero if a link name was successfully retrieved; -1 if one was
- *  not.
- */
-extern int gxio_mpipe_link_enumerate_mac(int index, char *link_name,
-					 uint8_t *mac_addr);
-
-/* Open an mPIPE link.
- *
- *  A link must be opened before it may be used to send or receive packets,
- *  and before its state may be examined or changed.  Depending up on the
- *  link's intended use, one or more link permissions may be requested via
- *  the flags parameter; see @ref gxio_mpipe_link_perm.  In addition, flags
- *  may request that the link's state be modified at open time.  See @ref
- *  gxio_mpipe_link_states and @ref gxio_mpipe_link_open_flags for more detail.
- *
- * @param link A link state object, which will be initialized if this
- *  function completes successfully.
- * @param context An initialized mPIPE context.
- * @param link_name Name of the link.
- * @param flags Zero or more @ref gxio_mpipe_link_open_flags, ORed together.
- * @return 0 if the link was successfully opened, or a negative error code.
- *
- */
-extern int gxio_mpipe_link_open(gxio_mpipe_link_t *link,
-				gxio_mpipe_context_t *context,
-				const char *link_name, unsigned int flags);
-
-/* Close an mPIPE link.
- *
- *  Closing a link makes it available for use by other processes.  Once
- *  a link has been closed, packets may no longer be sent on or received
- *  from the link, and its state may not be examined or changed.
- *
- * @param link A link state object, which will no longer be initialized
- *  if this function completes successfully.
- * @return 0 if the link was successfully closed, or a negative error code.
- *
- */
-extern int gxio_mpipe_link_close(gxio_mpipe_link_t *link);
-
-/* Return a link's channel number.
- *
- * @param link A properly initialized link state object.
- * @return The channel number for the link.
- */
-static inline int gxio_mpipe_link_channel(gxio_mpipe_link_t *link)
-{
-	return link->channel;
-}
-
-/* Set a link attribute.
- *
- * @param link A properly initialized link state object.
- * @param attr An attribute from the set of @ref gxio_mpipe_link_attrs.
- * @param val New value of the attribute.
- * @return 0 if the attribute was successfully set, or a negative error
- *  code.
- */
-extern int gxio_mpipe_link_set_attr(gxio_mpipe_link_t *link, uint32_t attr,
-				    int64_t val);
-
-///////////////////////////////////////////////////////////////////
-//                             Timestamp                         //
-///////////////////////////////////////////////////////////////////
-
-/* Get the timestamp of mPIPE when this routine is called.
- *
- * @param context An initialized mPIPE context.
- * @param ts A timespec structure to store the current clock.
- * @return If the call was successful, zero; otherwise, a negative error
- *  code.
- */
-extern int gxio_mpipe_get_timestamp(gxio_mpipe_context_t *context,
-				    struct timespec64 *ts);
-
-/* Set the timestamp of mPIPE.
- *
- * @param context An initialized mPIPE context.
- * @param ts A timespec structure to store the requested clock.
- * @return If the call was successful, zero; otherwise, a negative error
- *  code.
- */
-extern int gxio_mpipe_set_timestamp(gxio_mpipe_context_t *context,
-				    const struct timespec64 *ts);
-
-/* Adjust the timestamp of mPIPE.
- *
- * @param context An initialized mPIPE context.
- * @param delta A signed time offset to adjust, in nanoseconds.
- * The absolute value of this parameter must be less than or
- * equal to 1000000000.
- * @return If the call was successful, zero; otherwise, a negative error
- *  code.
- */
-extern int gxio_mpipe_adjust_timestamp(gxio_mpipe_context_t *context,
-				       int64_t delta);
-
-/** Adjust the mPIPE timestamp clock frequency.
- *
- * @param context An initialized mPIPE context.
- * @param ppb A 32-bit signed PPB (Parts Per Billion) value to adjust.
- * The absolute value of ppb must be less than or equal to 1000000000.
- * Values less than about 30000 will generally cause a GXIO_ERR_INVAL
- * return due to the granularity of the hardware that converts reference
- * clock cycles into seconds and nanoseconds.
- * @return If the call was successful, zero; otherwise, a negative error
- *  code.
- */
-extern int gxio_mpipe_adjust_timestamp_freq(gxio_mpipe_context_t* context,
-                                            int32_t ppb);
-
-#endif /* !_GXIO_MPIPE_H_ */
diff --git a/arch/tile/include/gxio/trio.h b/arch/tile/include/gxio/trio.h
deleted file mode 100644
index df10a662cc25..000000000000
--- a/arch/tile/include/gxio/trio.h
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * Copyright 2012 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.
- */
-
-/*
- *
- * An API for allocating, configuring, and manipulating TRIO hardware
- * resources
- */
-
-/*
- *
- * The TILE-Gx TRIO shim provides connections to external devices via
- * PCIe or other transaction IO standards.  The gxio_trio_ API,
- * declared in <gxio/trio.h>, allows applications to allocate and
- * configure TRIO IO resources like DMA command rings, memory map
- * windows, and device interrupts.  The following sections introduce
- * the various components of the API.  We strongly recommend reading
- * the TRIO section of the IO Device Guide (UG404) before working with
- * this API.
- *
- * @section trio__ingress TRIO Ingress Hardware Resources
- *
- * The TRIO ingress hardware is responsible for examining incoming
- * PCIe or StreamIO packets and choosing a processing mechanism based
- * on the packets' bus address.  The gxio_trio_ API can be used to
- * configure different handlers for different ranges of bus address
- * space.  The user can configure "mapped memory" and "scatter queue"
- * regions to match incoming packets within 4kB-aligned ranges of bus
- * addresses.  Each range specifies a different set of mapping
- * parameters to be applied when handling the ingress packet.  The
- * following sections describe how to work with MapMem and scatter
- * queue regions.
- *
- * @subsection trio__mapmem TRIO MapMem Regions
- *
- * TRIO mapped memory (or MapMem) regions allow the user to map
- * incoming read and write requests directly to the application's
- * memory space.  MapMem regions are allocated via
- * gxio_trio_alloc_memory_maps().  Given an integer MapMem number,
- * applications can use gxio_trio_init_memory_map() to specify the
- * range of bus addresses that will match the region and the range of
- * virtual addresses to which those packets will be applied.
- *
- * As with many other gxio APIs, the programmer must be sure to
- * register memory pages that will be used with MapMem regions.  Pages
- * can be registered with TRIO by allocating an ASID (address space
- * identifier) and then using gxio_trio_register_page() to register up to
- * 16 pages with the hardware.  The initialization functions for
- * resources that require registered memory (MapMem, scatter queues,
- * push DMA, and pull DMA) then take an 'asid' parameter in order to
- * configure which set of registered pages is used by each resource.
- *
- * @subsection trio__scatter_queue TRIO Scatter Queues
- *
- * The TRIO shim's scatter queue regions allow users to dynamically
- * map buffers from a large address space into a small range of bus
- * addresses.  This is particularly helpful for PCIe endpoint devices,
- * where the host generally limits the size of BARs to tens of
- * megabytes.
- *
- * Each scatter queue consists of a memory map region, a queue of
- * tile-side buffer VAs to be mapped to that region, and a bus-mapped
- * "doorbell" register that the remote endpoint can write to trigger a
- * dequeue of the current buffer VA, thus swapping in a new buffer.
- * The VAs pushed onto a scatter queue must be 4kB aligned, so
- * applications may need to use higher-level protocols to inform
- * remote entities that they should apply some additional, sub-4kB
- * offset when reading or writing the scatter queue region.  For more
- * information, see the IO Device Guide (UG404).
- *
- * @section trio__egress TRIO Egress Hardware Resources
- *
- * The TRIO shim supports two mechanisms for egress packet generation:
- * programmed IO (PIO) and push/pull DMA.  PIO allows applications to
- * create MMIO mappings for PCIe or StreamIO address space, such that
- * the application can generate word-sized read or write transactions
- * by issuing load or store instructions.  Push and pull DMA are tuned
- * for larger transactions; they use specialized hardware engines to
- * transfer large blocks of data at line rate.
- *
- * @subsection trio__pio TRIO Programmed IO
- *
- * Programmed IO allows applications to create MMIO mappings for PCIe
- * or StreamIO address space.  The hardware PIO regions support access
- * to PCIe configuration, IO, and memory space, but the gxio_trio API
- * only supports memory space accesses.  PIO regions are allocated
- * with gxio_trio_alloc_pio_regions() and initialized via
- * gxio_trio_init_pio_region().  Once a region is bound to a range of
- * bus address via the initialization function, the application can
- * use gxio_trio_map_pio_region() to create MMIO mappings from its VA
- * space onto the range of bus addresses supported by the PIO region.
- *
- * @subsection trio_dma TRIO Push and Pull DMA
- *
- * The TRIO push and pull DMA engines allow users to copy blocks of
- * data between application memory and the bus.  Push DMA generates
- * write packets that copy from application memory to the bus and pull
- * DMA generates read packets that copy from the bus into application
- * memory.  The DMA engines are managed via an API that is very
- * similar to the mPIPE eDMA interface.  For a detailed explanation of
- * the eDMA queue API, see @ref gxio_mpipe_wrappers.
- *
- * Push and pull DMA queues are allocated via
- * gxio_trio_alloc_push_dma_ring() / gxio_trio_alloc_pull_dma_ring().
- * Once allocated, users generally use a ::gxio_trio_dma_queue_t
- * object to manage the queue, providing easy wrappers for reserving
- * command slots in the DMA command ring, filling those slots, and
- * waiting for commands to complete.  DMA queues can be initialized
- * via gxio_trio_init_push_dma_queue() or
- * gxio_trio_init_pull_dma_queue().
- *
- * See @ref trio/push_dma/app.c for an example of how to use push DMA.
- *
- * @section trio_shortcomings Plans for Future API Revisions
- *
- * The simulation framework is incomplete.  Future features include:
- *
- * - Support for reset and deallocation of resources.
- *
- * - Support for pull DMA.
- *
- * - Support for interrupt regions and user-space interrupt delivery.
- *
- * - Support for getting BAR mappings and reserving regions of BAR
- *   address space.
- */
-#ifndef _GXIO_TRIO_H_
-#define _GXIO_TRIO_H_
-
-#include <linux/types.h>
-
-#include <gxio/common.h>
-#include <gxio/dma_queue.h>
-
-#include <arch/trio_constants.h>
-#include <arch/trio.h>
-#include <arch/trio_pcie_intfc.h>
-#include <arch/trio_pcie_rc.h>
-#include <arch/trio_shm.h>
-#include <hv/drv_trio_intf.h>
-#include <hv/iorpc.h>
-
-/* A context object used to manage TRIO hardware resources. */
-typedef struct {
-
-	/* File descriptor for calling up to Linux (and thus the HV). */
-	int fd;
-
-	/* The VA at which the MAC MMIO registers are mapped. */
-	char *mmio_base_mac;
-
-	/* The VA at which the PIO config space are mapped for each PCIe MAC.
-	   Gx36 has max 3 PCIe MACs per TRIO shim. */
-	char *mmio_base_pio_cfg[TILEGX_TRIO_PCIES];
-
-#ifdef USE_SHARED_PCIE_CONFIG_REGION
-	/* Index of the shared PIO region for PCI config access. */
-	int pio_cfg_index;
-#else
-	/* Index of the PIO region for PCI config access per MAC. */
-	int pio_cfg_index[TILEGX_TRIO_PCIES];
-#endif
-
-	/*  The VA at which the push DMA MMIO registers are mapped. */
-	char *mmio_push_dma[TRIO_NUM_PUSH_DMA_RINGS];
-
-	/*  The VA at which the pull DMA MMIO registers are mapped. */
-	char *mmio_pull_dma[TRIO_NUM_PUSH_DMA_RINGS];
-
-	/* Application space ID. */
-	unsigned int asid;
-
-} gxio_trio_context_t;
-
-/* Command descriptor for push or pull DMA. */
-typedef TRIO_DMA_DESC_t gxio_trio_dma_desc_t;
-
-/* A convenient, thread-safe interface to an eDMA ring. */
-typedef struct {
-
-	/* State object for tracking head and tail pointers. */
-	__gxio_dma_queue_t dma_queue;
-
-	/* The ring entries. */
-	gxio_trio_dma_desc_t *dma_descs;
-
-	/* The number of entries minus one. */
-	unsigned long mask_num_entries;
-
-	/* The log2() of the number of entries. */
-	unsigned int log2_num_entries;
-
-} gxio_trio_dma_queue_t;
-
-/* Initialize a TRIO context.
- *
- * This function allocates a TRIO "service domain" and maps the MMIO
- * registers into the the caller's VA space.
- *
- * @param trio_index Which TRIO shim; Gx36 must pass 0.
- * @param context Context object to be initialized.
- */
-extern int gxio_trio_init(gxio_trio_context_t *context,
-			  unsigned int trio_index);
-
-/* This indicates that an ASID hasn't been allocated. */
-#define GXIO_ASID_NULL -1
-
-/* Ordering modes for map memory regions and scatter queue regions. */
-typedef enum gxio_trio_order_mode_e {
-	/* Writes are not ordered.  Reads always wait for previous writes. */
-	GXIO_TRIO_ORDER_MODE_UNORDERED =
-		TRIO_MAP_MEM_SETUP__ORDER_MODE_VAL_UNORDERED,
-	/* Both writes and reads wait for previous transactions to complete. */
-	GXIO_TRIO_ORDER_MODE_STRICT =
-		TRIO_MAP_MEM_SETUP__ORDER_MODE_VAL_STRICT,
-	/* Writes are ordered unless the incoming packet has the
-	   relaxed-ordering attributes set. */
-	GXIO_TRIO_ORDER_MODE_OBEY_PACKET =
-		TRIO_MAP_MEM_SETUP__ORDER_MODE_VAL_REL_ORD
-} gxio_trio_order_mode_t;
-
-/* Initialize a memory mapping region.
- *
- * @param context An initialized TRIO context.
- * @param map A Memory map region allocated by gxio_trio_alloc_memory_map().
- * @param target_mem VA of backing memory, should be registered via
- *   gxio_trio_register_page() and aligned to 4kB.
- * @param target_size Length of the memory mapping, must be a multiple
- * of 4kB.
- * @param asid ASID to be used for Tile-side address translation.
- * @param mac MAC number.
- * @param bus_address Bus address at which the mapping starts.
- * @param order_mode Memory ordering mode for this mapping.
- * @return Zero on success, else ::GXIO_TRIO_ERR_BAD_MEMORY_MAP,
- * GXIO_TRIO_ERR_BAD_ASID, or ::GXIO_TRIO_ERR_BAD_BUS_RANGE.
- */
-extern int gxio_trio_init_memory_map(gxio_trio_context_t *context,
-				     unsigned int map, void *target_mem,
-				     size_t target_size, unsigned int asid,
-				     unsigned int mac, uint64_t bus_address,
-				     gxio_trio_order_mode_t order_mode);
-
-/* Flags that can be passed to resource allocation functions. */
-enum gxio_trio_alloc_flags_e {
-	GXIO_TRIO_ALLOC_FIXED = HV_TRIO_ALLOC_FIXED,
-};
-
-/* Flags that can be passed to memory registration functions. */
-enum gxio_trio_mem_flags_e {
-	/* Do not fill L3 when writing, and invalidate lines upon egress. */
-	GXIO_TRIO_MEM_FLAG_NT_HINT = IORPC_MEM_BUFFER_FLAG_NT_HINT,
-
-	/* L3 cache fills should only populate IO cache ways. */
-	GXIO_TRIO_MEM_FLAG_IO_PIN = IORPC_MEM_BUFFER_FLAG_IO_PIN,
-};
-
-/* Flag indicating a request generator uses a special traffic
-    class. */
-#define GXIO_TRIO_FLAG_TRAFFIC_CLASS(N) HV_TRIO_FLAG_TC(N)
-
-/* Flag indicating a request generator uses a virtual function
-    number. */
-#define GXIO_TRIO_FLAG_VFUNC(N) HV_TRIO_FLAG_VFUNC(N)
-
-/*****************************************************************
- *                       Memory Registration                      *
- ******************************************************************/
-
-/* Allocate Application Space Identifiers (ASIDs).  Each ASID can
- * register up to 16 page translations.  ASIDs are used by memory map
- * regions, scatter queues, and DMA queues to translate application
- * VAs into memory system PAs.
- *
- * @param context An initialized TRIO context.
- * @param count Number of ASIDs required.
- * @param first Index of first ASID if ::GXIO_TRIO_ALLOC_FIXED flag
- *   is set, otherwise ignored.
- * @param flags Flag bits, including bits from ::gxio_trio_alloc_flags_e.
- * @return Index of first ASID, or ::GXIO_TRIO_ERR_NO_ASID if allocation
- *   failed.
- */
-extern int gxio_trio_alloc_asids(gxio_trio_context_t *context,
-				 unsigned int count, unsigned int first,
-				 unsigned int flags);
-
-#endif /* ! _GXIO_TRIO_H_ */
diff --git a/arch/tile/include/gxio/uart.h b/arch/tile/include/gxio/uart.h
deleted file mode 100644
index 438ee7e46c7b..000000000000
--- a/arch/tile/include/gxio/uart.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright 2013 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 _GXIO_UART_H_
-#define _GXIO_UART_H_
-
-#include "common.h"
-
-#include <hv/drv_uart_intf.h>
-#include <hv/iorpc.h>
-
-/*
- *
- * An API for manipulating UART interface.
- */
-
-/*
- *
- * The Rshim allows access to the processor's UART interface.
- */
-
-/* A context object used to manage UART resources. */
-typedef struct {
-
-	/* File descriptor for calling up to the hypervisor. */
-	int fd;
-
-	/* The VA at which our MMIO registers are mapped. */
-	char *mmio_base;
-
-} gxio_uart_context_t;
-
-/* Request UART interrupts.
- *
- *  Request that interrupts be delivered to a tile when the UART's
- *  Receive FIFO is written, or the Write FIFO is read.
- *
- * @param context Pointer to a properly initialized gxio_uart_context_t.
- * @param bind_cpu_x X coordinate of CPU to which interrupt will be delivered.
- * @param bind_cpu_y Y coordinate of CPU to which interrupt will be delivered.
- * @param bind_interrupt IPI interrupt number.
- * @param bind_event Sub-interrupt event bit number; a negative value can
- *  disable the interrupt.
- * @return Zero if all of the requested UART events were successfully
- *  configured to interrupt.
- */
-extern int gxio_uart_cfg_interrupt(gxio_uart_context_t *context,
-				   int bind_cpu_x,
-				   int bind_cpu_y,
-				   int bind_interrupt, int bind_event);
-
-/* Initialize a UART context.
- *
- *  A properly initialized context must be obtained before any of the other
- *  gxio_uart routines may be used.
- *
- * @param context Pointer to a gxio_uart_context_t, which will be initialized
- *  by this routine, if it succeeds.
- * @param uart_index Index of the UART to use.
- * @return Zero if the context was successfully initialized, else a
- *  GXIO_ERR_xxx error code.
- */
-extern int gxio_uart_init(gxio_uart_context_t *context, int uart_index);
-
-/* Destroy a UART context.
- *
- *  Once destroyed, a context may not be used with any gxio_uart routines
- *  other than gxio_uart_init().  After this routine returns, no further
- *  interrupts requested on this context will be delivered.  The state and
- *  configuration of the pins which had been attached to this context are
- *  unchanged by this operation.
- *
- * @param context Pointer to a gxio_uart_context_t.
- * @return Zero if the context was successfully destroyed, else a
- *  GXIO_ERR_xxx error code.
- */
-extern int gxio_uart_destroy(gxio_uart_context_t *context);
-
-/* Write UART register.
- * @param context Pointer to a gxio_uart_context_t.
- * @param offset UART register offset.
- * @param word Data will be wrote to UART reigister.
- */
-extern void gxio_uart_write(gxio_uart_context_t *context, uint64_t offset,
-			    uint64_t word);
-
-/* Read UART register.
- * @param context Pointer to a gxio_uart_context_t.
- * @param offset UART register offset.
- * @return Data read from UART register.
- */
-extern uint64_t gxio_uart_read(gxio_uart_context_t *context, uint64_t offset);
-
-#endif /* _GXIO_UART_H_ */
diff --git a/arch/tile/include/gxio/usb_host.h b/arch/tile/include/gxio/usb_host.h
deleted file mode 100644
index 93c9636d2dd7..000000000000
--- a/arch/tile/include/gxio/usb_host.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright 2012 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 _GXIO_USB_H_
-#define _GXIO_USB_H_
-
-#include <gxio/common.h>
-
-#include <hv/drv_usb_host_intf.h>
-#include <hv/iorpc.h>
-
-/*
- *
- * An API for manipulating general-purpose I/O pins.
- */
-
-/*
- *
- * The USB shim allows access to the processor's Universal Serial Bus
- * connections.
- */
-
-/* A context object used to manage USB hardware resources. */
-typedef struct {
-
-	/* File descriptor for calling up to the hypervisor. */
-	int fd;
-
-	/* The VA at which our MMIO registers are mapped. */
-	char *mmio_base;
-} gxio_usb_host_context_t;
-
-/* Initialize a USB context.
- *
- *  A properly initialized context must be obtained before any of the other
- *  gxio_usb_host routines may be used.
- *
- * @param context Pointer to a gxio_usb_host_context_t, which will be
- *  initialized by this routine, if it succeeds.
- * @param usb_index Index of the USB shim to use.
- * @param is_ehci Nonzero to use the EHCI interface; zero to use the OHCI
- *  intereface.
- * @return Zero if the context was successfully initialized, else a
- *  GXIO_ERR_xxx error code.
- */
-extern int gxio_usb_host_init(gxio_usb_host_context_t *context, int usb_index,
-			      int is_ehci);
-
-/* Destroy a USB context.
- *
- *  Once destroyed, a context may not be used with any gxio_usb_host routines
- *  other than gxio_usb_host_init().  After this routine returns, no further
- *  interrupts or signals requested on this context will be delivered.  The
- *  state and configuration of the pins which had been attached to this
- *  context are unchanged by this operation.
- *
- * @param context Pointer to a gxio_usb_host_context_t.
- * @return Zero if the context was successfully destroyed, else a
- *  GXIO_ERR_xxx error code.
- */
-extern int gxio_usb_host_destroy(gxio_usb_host_context_t *context);
-
-/* Retrieve the address of the shim's MMIO registers.
- *
- * @param context Pointer to a properly initialized gxio_usb_host_context_t.
- * @return The address of the shim's MMIO registers.
- */
-extern void *gxio_usb_host_get_reg_start(gxio_usb_host_context_t *context);
-
-/* Retrieve the length of the shim's MMIO registers.
- *
- * @param context Pointer to a properly initialized gxio_usb_host_context_t.
- * @return The length of the shim's MMIO registers.
- */
-extern size_t gxio_usb_host_get_reg_len(gxio_usb_host_context_t *context);
-
-#endif /* _GXIO_USB_H_ */