IB/ipath: Deprecate ipath driver and move to staging.

It is now time for the ipath driver to begin to be phased out of the kernel.
This patch moves the ipath driver from the Infiniband sub tree to the staging
area where it will remain until the code is removed from the kernel in a few
releases.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 0 insertions, 270 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_keys.c b/drivers/infiniband/hw/ipath/ipath_keys.c
deleted file mode 100644
index c0e933fec218..000000000000
--- a/drivers/infiniband/hw/ipath/ipath_keys.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
- * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses.  You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- *     Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *      - Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *
- *      - Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <asm/io.h>
-
-#include "ipath_verbs.h"
-#include "ipath_kernel.h"
-
-/**
- * ipath_alloc_lkey - allocate an lkey
- * @rkt: lkey table in which to allocate the lkey
- * @mr: memory region that this lkey protects
- *
- * Returns 1 if successful, otherwise returns 0.
- */
-
-int ipath_alloc_lkey(struct ipath_lkey_table *rkt, struct ipath_mregion *mr)
-{
-	unsigned long flags;
-	u32 r;
-	u32 n;
-	int ret;
-
-	spin_lock_irqsave(&rkt->lock, flags);
-
-	/* Find the next available LKEY */
-	r = n = rkt->next;
-	for (;;) {
-		if (rkt->table[r] == NULL)
-			break;
-		r = (r + 1) & (rkt->max - 1);
-		if (r == n) {
-			spin_unlock_irqrestore(&rkt->lock, flags);
-			ipath_dbg("LKEY table full\n");
-			ret = 0;
-			goto bail;
-		}
-	}
-	rkt->next = (r + 1) & (rkt->max - 1);
-	/*
-	 * Make sure lkey is never zero which is reserved to indicate an
-	 * unrestricted LKEY.
-	 */
-	rkt->gen++;
-	mr->lkey = (r << (32 - ib_ipath_lkey_table_size)) |
-		((((1 << (24 - ib_ipath_lkey_table_size)) - 1) & rkt->gen)
-		 << 8);
-	if (mr->lkey == 0) {
-		mr->lkey |= 1 << 8;
-		rkt->gen++;
-	}
-	rkt->table[r] = mr;
-	spin_unlock_irqrestore(&rkt->lock, flags);
-
-	ret = 1;
-
-bail:
-	return ret;
-}
-
-/**
- * ipath_free_lkey - free an lkey
- * @rkt: table from which to free the lkey
- * @lkey: lkey id to free
- */
-void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey)
-{
-	unsigned long flags;
-	u32 r;
-
-	if (lkey == 0)
-		return;
-	r = lkey >> (32 - ib_ipath_lkey_table_size);
-	spin_lock_irqsave(&rkt->lock, flags);
-	rkt->table[r] = NULL;
-	spin_unlock_irqrestore(&rkt->lock, flags);
-}
-
-/**
- * ipath_lkey_ok - check IB SGE for validity and initialize
- * @rkt: table containing lkey to check SGE against
- * @isge: outgoing internal SGE
- * @sge: SGE to check
- * @acc: access flags
- *
- * Return 1 if valid and successful, otherwise returns 0.
- *
- * Check the IB SGE for validity and initialize our internal version
- * of it.
- */
-int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge,
-		  struct ib_sge *sge, int acc)
-{
-	struct ipath_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table;
-	struct ipath_mregion *mr;
-	unsigned n, m;
-	size_t off;
-	int ret;
-
-	/*
-	 * We use LKEY == zero for kernel virtual addresses
-	 * (see ipath_get_dma_mr and ipath_dma.c).
-	 */
-	if (sge->lkey == 0) {
-		/* always a kernel port, no locking needed */
-		struct ipath_pd *pd = to_ipd(qp->ibqp.pd);
-
-		if (pd->user) {
-			ret = 0;
-			goto bail;
-		}
-		isge->mr = NULL;
-		isge->vaddr = (void *) sge->addr;
-		isge->length = sge->length;
-		isge->sge_length = sge->length;
-		ret = 1;
-		goto bail;
-	}
-	mr = rkt->table[(sge->lkey >> (32 - ib_ipath_lkey_table_size))];
-	if (unlikely(mr == NULL || mr->lkey != sge->lkey ||
-		     qp->ibqp.pd != mr->pd)) {
-		ret = 0;
-		goto bail;
-	}
-
-	off = sge->addr - mr->user_base;
-	if (unlikely(sge->addr < mr->user_base ||
-		     off + sge->length > mr->length ||
-		     (mr->access_flags & acc) != acc)) {
-		ret = 0;
-		goto bail;
-	}
-
-	off += mr->offset;
-	m = 0;
-	n = 0;
-	while (off >= mr->map[m]->segs[n].length) {
-		off -= mr->map[m]->segs[n].length;
-		n++;
-		if (n >= IPATH_SEGSZ) {
-			m++;
-			n = 0;
-		}
-	}
-	isge->mr = mr;
-	isge->vaddr = mr->map[m]->segs[n].vaddr + off;
-	isge->length = mr->map[m]->segs[n].length - off;
-	isge->sge_length = sge->length;
-	isge->m = m;
-	isge->n = n;
-
-	ret = 1;
-
-bail:
-	return ret;
-}
-
-/**
- * ipath_rkey_ok - check the IB virtual address, length, and RKEY
- * @dev: infiniband device
- * @ss: SGE state
- * @len: length of data
- * @vaddr: virtual address to place data
- * @rkey: rkey to check
- * @acc: access flags
- *
- * Return 1 if successful, otherwise 0.
- */
-int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss,
-		  u32 len, u64 vaddr, u32 rkey, int acc)
-{
-	struct ipath_ibdev *dev = to_idev(qp->ibqp.device);
-	struct ipath_lkey_table *rkt = &dev->lk_table;
-	struct ipath_sge *sge = &ss->sge;
-	struct ipath_mregion *mr;
-	unsigned n, m;
-	size_t off;
-	int ret;
-
-	/*
-	 * We use RKEY == zero for kernel virtual addresses
-	 * (see ipath_get_dma_mr and ipath_dma.c).
-	 */
-	if (rkey == 0) {
-		/* always a kernel port, no locking needed */
-		struct ipath_pd *pd = to_ipd(qp->ibqp.pd);
-
-		if (pd->user) {
-			ret = 0;
-			goto bail;
-		}
-		sge->mr = NULL;
-		sge->vaddr = (void *) vaddr;
-		sge->length = len;
-		sge->sge_length = len;
-		ss->sg_list = NULL;
-		ss->num_sge = 1;
-		ret = 1;
-		goto bail;
-	}
-
-	mr = rkt->table[(rkey >> (32 - ib_ipath_lkey_table_size))];
-	if (unlikely(mr == NULL || mr->lkey != rkey ||
-		     qp->ibqp.pd != mr->pd)) {
-		ret = 0;
-		goto bail;
-	}
-
-	off = vaddr - mr->iova;
-	if (unlikely(vaddr < mr->iova || off + len > mr->length ||
-		     (mr->access_flags & acc) == 0)) {
-		ret = 0;
-		goto bail;
-	}
-
-	off += mr->offset;
-	m = 0;
-	n = 0;
-	while (off >= mr->map[m]->segs[n].length) {
-		off -= mr->map[m]->segs[n].length;
-		n++;
-		if (n >= IPATH_SEGSZ) {
-			m++;
-			n = 0;
-		}
-	}
-	sge->mr = mr;
-	sge->vaddr = mr->map[m]->segs[n].vaddr + off;
-	sge->length = mr->map[m]->segs[n].length - off;
-	sge->sge_length = len;
-	sge->m = m;
-	sge->n = n;
-	ss->sg_list = NULL;
-	ss->num_sge = 1;
-
-	ret = 1;
-
-bail:
-	return ret;
-}