From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Marciniszyn Subject: [PATCH v2 11/49] IB/hfi1: add char device instantiation code Date: Mon, 15 Jun 2015 09:26:57 -0400 Message-ID: <20150615132657.29741.16813.stgit@phlsvslse11.ph.intel.com> References: <20150615132434.29741.35258.stgit@phlsvslse11.ph.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150615132434.29741.35258.stgit-K+u1se/DcYrLESAwzcoQNrvm/XP+8Wra@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org Signed-off-by: Andrew Friedley Signed-off-by: Arthur Kepner Signed-off-by: Brendan Cunningham Signed-off-by: Brian Welty Signed-off-by: Caz Yokoyama Signed-off-by: Dean Luick Signed-off-by: Dennis Dalessandro Signed-off-by: Easwar Hariharan Signed-off-by: Harish Chegondi Signed-off-by: Ira Weiny Signed-off-by: Jim Snow Signed-off-by: John Gregor Signed-off-by: Jubin John Signed-off-by: Kaike Wan Signed-off-by: Kevin Pine Signed-off-by: Kyle Liddell Signed-off-by: Mike Marciniszyn Signed-off-by: Mitko Haralanov Signed-off-by: Ravi Krishnaswamy Signed-off-by: Sadanand Warrier Signed-off-by: Sanath Kumar Signed-off-by: Sudeep Dutt Signed-off-by: Vlad Danushevsky --- drivers/infiniband/hw/hfi1/device.c | 142 +++++++++++++++++++++++++++++++++++ drivers/infiniband/hw/hfi1/device.h | 61 +++++++++++++++ 2 files changed, 203 insertions(+) create mode 100644 drivers/infiniband/hw/hfi1/device.c create mode 100644 drivers/infiniband/hw/hfi1/device.h diff --git a/drivers/infiniband/hw/hfi1/device.c b/drivers/infiniband/hw/hfi1/device.c new file mode 100644 index 0000000..07c87a87 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/device.c @@ -0,0 +1,142 @@ +/* + * + * 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 + * + * Copyright(c) 2015 Intel Corporation. + * + * 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 + * + * Copyright(c) 2015 Intel Corporation. + * + * 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. + * + */ + +#include +#include +#include +#include + +#include "hfi.h" +#include "device.h" + +static struct class *class; +static dev_t hfi1_dev; + +int hfi1_cdev_init(int minor, const char *name, + const struct file_operations *fops, + struct cdev *cdev, struct device **devp) +{ + const dev_t dev = MKDEV(MAJOR(hfi1_dev), minor); + struct device *device = NULL; + int ret; + + cdev_init(cdev, fops); + cdev->owner = THIS_MODULE; + kobject_set_name(&cdev->kobj, name); + + ret = cdev_add(cdev, dev, 1); + if (ret < 0) { + pr_err("Could not add cdev for minor %d, %s (err %d)\n", + minor, name, -ret); + goto done; + } + + device = device_create(class, NULL, dev, NULL, "%s", name); + if (!IS_ERR(device)) + goto done; + ret = PTR_ERR(device); + device = NULL; + pr_err("Could not create device for minor %d, %s (err %d)\n", + minor, name, -ret); + cdev_del(cdev); +done: + *devp = device; + return ret; +} + +void hfi1_cdev_cleanup(struct cdev *cdev, struct device **devp) +{ + struct device *device = *devp; + + if (device) { + device_unregister(device); + *devp = NULL; + + cdev_del(cdev); + } +} + +static const char *hfi1_class_name = "hfi1"; + +const char *class_name(void) +{ + return hfi1_class_name; +} + +int __init dev_init(void) +{ + int ret; + + ret = alloc_chrdev_region(&hfi1_dev, 0, HFI1_NMINORS, DRIVER_NAME); + if (ret < 0) { + pr_err("Could not allocate chrdev region (err %d)\n", -ret); + goto done; + } + + class = class_create(THIS_MODULE, class_name()); + if (IS_ERR(class)) { + ret = PTR_ERR(class); + pr_err("Could not create device class (err %d)\n", -ret); + unregister_chrdev_region(hfi1_dev, HFI1_NMINORS); + } + +done: + return ret; +} + +void dev_cleanup(void) +{ + if (class) { + class_destroy(class); + class = NULL; + } + + unregister_chrdev_region(hfi1_dev, HFI1_NMINORS); +} diff --git a/drivers/infiniband/hw/hfi1/device.h b/drivers/infiniband/hw/hfi1/device.h new file mode 100644 index 0000000..98caecd --- /dev/null +++ b/drivers/infiniband/hw/hfi1/device.h @@ -0,0 +1,61 @@ +#ifndef _HFI1_DEVICE_H +#define _HFI1_DEVICE_H +/* + * + * 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 + * + * Copyright(c) 2015 Intel Corporation. + * + * 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 + * + * Copyright(c) 2015 Intel Corporation. + * + * 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. + * + */ + +int hfi1_cdev_init(int minor, const char *name, + const struct file_operations *fops, + struct cdev *cdev, struct device **devp); +void hfi1_cdev_cleanup(struct cdev *cdev, struct device **devp); +const char *class_name(void); +int __init dev_init(void); +void dev_cleanup(void); + +#endif /* _HFI1_DEVICE_H */ -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html