diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/file_ops.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/file_ops.c | 81 |
1 files changed, 20 insertions, 61 deletions
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index 259115886d35..f5f9269fdc16 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -1,49 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause /* - * Copyright(c) 2015-2017 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * 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. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * 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. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * + * Copyright(c) 2020 Cornelis Networks, Inc. + * Copyright(c) 2015-2020 Intel Corporation. */ + #include <linux/poll.h> #include <linux/cdev.h> #include <linux/vmalloc.h> @@ -193,7 +153,7 @@ static int hfi1_file_open(struct inode *inode, struct file *fp) if (!((dd->flags & HFI1_PRESENT) && dd->kregbase1)) return -EINVAL; - if (!atomic_inc_not_zero(&dd->user_refcount)) + if (!refcount_inc_not_zero(&dd->user_refcount)) return -ENXIO; /* The real work is performed later in assign_ctxt() */ @@ -206,16 +166,13 @@ static int hfi1_file_open(struct inode *inode, struct file *fp) spin_lock_init(&fd->tid_lock); spin_lock_init(&fd->invalid_lock); fd->rec_cpu_num = -1; /* no cpu affinity by default */ - fd->mm = current->mm; - mmgrab(fd->mm); fd->dd = dd; - kobject_get(&fd->dd->kobj); fp->private_data = fd; return 0; nomem: kfree(fd); fp->private_data = NULL; - if (atomic_dec_and_test(&dd->user_refcount)) + if (refcount_dec_and_test(&dd->user_refcount)) complete(&dd->user_comp); return -ENOMEM; } @@ -308,6 +265,8 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from) unsigned long dim = from->nr_segs; int idx; + if (!HFI1_CAP_IS_KSET(SDMA)) + return -EINVAL; idx = srcu_read_lock(&fd->pq_srcu); pq = srcu_dereference(fd->pq, &fd->pq_srcu); if (!cq || !pq) { @@ -712,10 +671,8 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) deallocate_ctxt(uctxt); done: - mmdrop(fdata->mm); - kobject_put(&dd->kobj); - if (atomic_dec_and_test(&dd->user_refcount)) + if (refcount_dec_and_test(&dd->user_refcount)) complete(&dd->user_comp); cleanup_srcu_struct(&fdata->pq_srcu); @@ -740,7 +697,7 @@ static u64 kvirt_to_phys(void *addr) } /** - * complete_subctxt + * complete_subctxt - complete sub-context info * @fd: valid filedata pointer * * Sub-context info can only be set up after the base context @@ -845,7 +802,7 @@ static int assign_ctxt(struct hfi1_filedata *fd, unsigned long arg, u32 len) } /** - * match_ctxt + * match_ctxt - match context * @fd: valid filedata pointer * @uinfo: user info to compare base context with * @uctxt: context to compare uinfo to. @@ -902,7 +859,7 @@ static int match_ctxt(struct hfi1_filedata *fd, } /** - * find_sub_ctxt + * find_sub_ctxt - fund sub-context * @fd: valid filedata pointer * @uinfo: matching info to use to find a possible context to share. * @@ -1008,7 +965,7 @@ static int allocate_ctxt(struct hfi1_filedata *fd, struct hfi1_devdata *dd, uctxt->userversion = uinfo->userversion; uctxt->flags = hfi1_cap_mask; /* save current flag state */ init_waitqueue_head(&uctxt->wait); - strlcpy(uctxt->comm, current->comm, sizeof(uctxt->comm)); + strscpy(uctxt->comm, current->comm, sizeof(uctxt->comm)); memcpy(uctxt->uuid, uinfo->uuid, sizeof(uctxt->uuid)); uctxt->jkey = generate_jkey(current_uid()); hfi1_stats.sps_ctxts++; @@ -1222,8 +1179,10 @@ static int setup_base_ctxt(struct hfi1_filedata *fd, goto done; ret = init_user_ctxt(fd, uctxt); - if (ret) + if (ret) { + hfi1_free_ctxt_rcv_groups(uctxt); goto done; + } user_init(uctxt); @@ -1265,8 +1224,8 @@ static int get_base_info(struct hfi1_filedata *fd, unsigned long arg, u32 len) memset(&binfo, 0, sizeof(binfo)); binfo.hw_version = dd->revision; - binfo.sw_version = HFI1_KERN_SWVERSION; - binfo.bthqp = kdeth_qp; + binfo.sw_version = HFI1_USER_SWVERSION; + binfo.bthqp = RVT_KDETH_QP_PREFIX; binfo.jkey = uctxt->jkey; /* * If more than 64 contexts are enabled the allocated credit @@ -1526,7 +1485,7 @@ int hfi1_set_uevent_bits(struct hfi1_pportdata *ppd, const int evtbit) * manage_rcvq - manage a context's receive queue * @uctxt: the context * @subctxt: the sub-context - * @start_stop: action to carry out + * @arg: start/stop action to carry out * * start_stop == 0 disables receive on the context, for use in queue * overflow conditions. start_stop==1 re-enables, to be used to @@ -1696,7 +1655,7 @@ static int user_add(struct hfi1_devdata *dd) snprintf(name, sizeof(name), "%s_%d", class_name(), dd->unit); ret = hfi1_cdev_init(dd->unit, name, &hfi1_file_ops, &dd->user_cdev, &dd->user_device, - true, &dd->kobj); + true, &dd->verbs_dev.rdi.ibdev.dev.kobj); if (ret) user_remove(dd); |