IB/qib: remove qib_keys.c

qib_keys.c was left uncompilable in commit 7c2e11fe2dbe ("IB/qib: Remove qp and mr functionality from qib")
Since nothing need it, remove it from tree.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
deleted file mode 100644 (file)
index 8fdf79f..0000000
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * Copyright (c) 2006, 2007, 2009 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 "qib.h"
-
-/**
- * qib_alloc_lkey - allocate an lkey
- * @mr: memory region that this lkey protects
- * @dma_region: 0->normal key, 1->restricted DMA key
- *
- * Returns 0 if successful, otherwise returns -errno.
- *
- * Increments mr reference count as required.
- *
- * Sets the lkey field mr for non-dma regions.
- *
- */
-
-int qib_alloc_lkey(struct rvt_mregion *mr, int dma_region)
-{
-       unsigned long flags;
-       u32 r;
-       u32 n;
-       int ret = 0;
-       struct qib_ibdev *dev = to_idev(mr->pd->device);
-       struct rvt_lkey_table *rkt = &dev->lk_table;
-
-       spin_lock_irqsave(&rkt->lock, flags);
-
-       /* special case for dma_mr lkey == 0 */
-       if (dma_region) {
-               struct rvt_mregion *tmr;
-
-               tmr = rcu_access_pointer(dev->dma_mr);
-               if (!tmr) {
-                       qib_get_mr(mr);
-                       rcu_assign_pointer(dev->dma_mr, mr);
-                       mr->lkey_published = 1;
-               }
-               goto success;
-       }
-
-       /* Find the next available LKEY */
-       r = rkt->next;
-       n = r;
-       for (;;) {
-               if (rkt->table[r] == NULL)
-                       break;
-               r = (r + 1) & (rkt->max - 1);
-               if (r == n)
-                       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++;
-       /*
-        * bits are capped in qib_verbs.c to insure enough bits
-        * for generation number
-        */
-       mr->lkey = (r << (32 - ib_rvt_lkey_table_size)) |
-               ((((1 << (24 - ib_rvt_lkey_table_size)) - 1) & rkt->gen)
-                << 8);
-       if (mr->lkey == 0) {
-               mr->lkey |= 1 << 8;
-               rkt->gen++;
-       }
-       qib_get_mr(mr);
-       rcu_assign_pointer(rkt->table[r], mr);
-       mr->lkey_published = 1;
-success:
-       spin_unlock_irqrestore(&rkt->lock, flags);
-out:
-       return ret;
-bail:
-       spin_unlock_irqrestore(&rkt->lock, flags);
-       ret = -ENOMEM;
-       goto out;
-}
-
-/**
- * qib_free_lkey - free an lkey
- * @mr: mr to free from tables
- */
-void qib_free_lkey(struct rvt_mregion *mr)
-{
-       unsigned long flags;
-       u32 lkey = mr->lkey;
-       u32 r;
-       struct qib_ibdev *dev = to_idev(mr->pd->device);
-       struct rvt_lkey_table *rkt = &dev->lk_table;
-
-       spin_lock_irqsave(&rkt->lock, flags);
-       if (!mr->lkey_published)
-               goto out;
-       if (lkey == 0)
-               RCU_INIT_POINTER(dev->dma_mr, NULL);
-       else {
-               r = lkey >> (32 - ib_rvt_lkey_table_size);
-               RCU_INIT_POINTER(rkt->table[r], NULL);
-       }
-       qib_put_mr(mr);
-       mr->lkey_published = 0;
-out:
-       spin_unlock_irqrestore(&rkt->lock, flags);
-}
-
-/**
- * qib_rkey_ok - check the IB virtual address, length, and RKEY
- * @qp: qp for validation
- * @sge: 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.
- *
- * increments the reference count upon success
- */
-int qib_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
-               u32 len, u64 vaddr, u32 rkey, int acc)
-{
-       struct rvt_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table;
-       struct rvt_mregion *mr;
-       unsigned n, m;
-       size_t off;
-
-       /* We use RKEY == zero for kernel virtual addresses */
-       rcu_read_lock();
-       if (rkey == 0) {
-               struct rvt_pd *pd = ibpd_to_rvtpd(qp->ibqp.pd);
-               struct qib_ibdev *dev = to_idev(pd->ibpd.device);
-
-               if (pd->user)
-                       goto bail;
-               mr = rcu_dereference(dev->dma_mr);
-               if (!mr)
-                       goto bail;
-               if (unlikely(!atomic_inc_not_zero(&mr->refcount)))
-                       goto bail;
-               rcu_read_unlock();
-
-               sge->mr = mr;
-               sge->vaddr = (void *) vaddr;
-               sge->length = len;
-               sge->sge_length = len;
-               sge->m = 0;
-               sge->n = 0;
-               goto ok;
-       }
-
-       mr = rcu_dereference(
-               rkt->table[(rkey >> (32 - ib_rvt_lkey_table_size))]);
-       if (unlikely(!mr || mr->lkey != rkey || qp->ibqp.pd != mr->pd))
-               goto bail;
-
-       off = vaddr - mr->iova;
-       if (unlikely(vaddr < mr->iova || off + len > mr->length ||
-                    (mr->access_flags & acc) == 0))
-               goto bail;
-       if (unlikely(!atomic_inc_not_zero(&mr->refcount)))
-               goto bail;
-       rcu_read_unlock();
-
-       off += mr->offset;
-       if (mr->page_shift) {
-               /*
-               page sizes are uniform power of 2 so no loop is necessary
-               entries_spanned_by_off is the number of times the loop below
-               would have executed.
-               */
-               size_t entries_spanned_by_off;
-
-               entries_spanned_by_off = off >> mr->page_shift;
-               off -= (entries_spanned_by_off << mr->page_shift);
-               m = entries_spanned_by_off / RVT_SEGSZ;
-               n = entries_spanned_by_off % RVT_SEGSZ;
-       } else {
-               m = 0;
-               n = 0;
-               while (off >= mr->map[m]->segs[n].length) {
-                       off -= mr->map[m]->segs[n].length;
-                       n++;
-                       if (n >= RVT_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;
-ok:
-       return 1;
-bail:
-       rcu_read_unlock();
-       return 0;
-}
-