Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 2 | * SPDX-FileCopyrightText: Copyright 2020, 2022-2024 Arm Limited and/or its affiliates <open-source-office@arm.com> |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 3 | * SPDX-License-Identifier: GPL-2.0-only |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 4 | * |
| 5 | * This program is free software and is provided to you under the terms of the |
| 6 | * GNU General Public License version 2 as published by the Free Software |
| 7 | * Foundation, and any use by you of this program is subject to the terms |
| 8 | * of such GNU licence. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, you can access it online at |
| 17 | * http://www.gnu.org/licenses/gpl-2.0.html. |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /**************************************************************************** |
| 21 | * Includes |
| 22 | ****************************************************************************/ |
| 23 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 24 | #include <rpmsg/ethosu_rpmsg_network.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 25 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 26 | #include <common/ethosu_device.h> |
| 27 | #include <common/ethosu_dma_mem.h> |
| 28 | #include <rpmsg/ethosu_rpmsg_inference.h> |
| 29 | #include <rpmsg/ethosu_rpmsg_network_info.h> |
| 30 | #include <uapi/ethosu.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 31 | |
| 32 | #include <linux/anon_inodes.h> |
| 33 | #include <linux/file.h> |
| 34 | #include <linux/fs.h> |
| 35 | #include <linux/uaccess.h> |
| 36 | |
| 37 | /**************************************************************************** |
| 38 | * Variables |
| 39 | ****************************************************************************/ |
| 40 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 41 | static int ethosu_rpmsg_network_release(struct inode *inode, |
| 42 | struct file *file); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 43 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 44 | static long ethosu_rpmsg_network_ioctl(struct file *file, |
| 45 | unsigned int cmd, |
| 46 | unsigned long arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 47 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 48 | static const struct file_operations ethosu_rpmsg_network_fops = { |
| 49 | .release = ðosu_rpmsg_network_release, |
| 50 | .unlocked_ioctl = ðosu_rpmsg_network_ioctl, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 51 | #ifdef CONFIG_COMPAT |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 52 | .compat_ioctl = ðosu_rpmsg_network_ioctl, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 53 | #endif |
| 54 | }; |
| 55 | |
| 56 | /**************************************************************************** |
| 57 | * Functions |
| 58 | ****************************************************************************/ |
| 59 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 60 | static bool ethosu_rpmsg_network_verify(struct file *file) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 61 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 62 | return file->f_op == ðosu_rpmsg_network_fops; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 63 | } |
| 64 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 65 | static void ethosu_rpmsg_network_destroy(struct kref *kref) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 66 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 67 | struct ethosu_rpmsg_network *net = |
| 68 | container_of(kref, struct ethosu_rpmsg_network, kref); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 69 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 70 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 71 | dev_dbg(dev, "Network destroy. net=0x%pK\n", net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 72 | |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 73 | if (net->dma_mem != NULL) |
| 74 | ethosu_dma_mem_free(&net->dma_mem); |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 75 | |
Mikael Olsson | 1182f38 | 2023-08-10 13:25:44 +0200 | [diff] [blame] | 76 | memset(net, 0, sizeof(*net)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 77 | devm_kfree(dev, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 78 | } |
| 79 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 80 | static int ethosu_rpmsg_network_release(struct inode *inode, |
| 81 | struct file *file) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 82 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 83 | struct ethosu_rpmsg_network *net = file->private_data; |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 84 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 85 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 86 | dev_dbg(dev, "Network release. file=0x%pK, net=0x%pK\n", |
| 87 | file, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 88 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 89 | ethosu_rpmsg_network_put(net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 94 | static long ethosu_rpmsg_network_ioctl(struct file *file, |
| 95 | unsigned int cmd, |
| 96 | unsigned long arg) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 97 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 98 | struct ethosu_rpmsg_network *net = file->private_data; |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 99 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 100 | void __user *udata = (void __user *)arg; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 101 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 102 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 103 | ret = device_lock_interruptible(net->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 104 | if (ret) |
| 105 | return ret; |
| 106 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 107 | switch (cmd) { |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 108 | case ETHOSU_IOCTL_NETWORK_INFO: { |
Mikael Olsson | ec90223 | 2023-08-24 13:28:19 +0200 | [diff] [blame] | 109 | struct ethosu_uapi_network_info uapi = { 0 }; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 110 | |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 111 | dev_dbg(dev, "Network ioctl: Network info. net=0x%pK", net); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 112 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 113 | ret = ethosu_rpmsg_network_info_request(dev, net->mailbox, net, |
| 114 | &uapi); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 115 | if (ret) |
| 116 | break; |
| 117 | |
| 118 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
| 119 | break; |
| 120 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 121 | case ETHOSU_IOCTL_INFERENCE_CREATE: { |
| 122 | struct ethosu_uapi_inference_create uapi; |
| 123 | |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 124 | if (copy_from_user(&uapi, udata, sizeof(uapi))) { |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 125 | dev_err(dev, |
| 126 | "Network ioctl: Failed to copy inference request"); |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 127 | ret = -EFAULT; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 128 | break; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 129 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 130 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 131 | dev_dbg(dev, |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 132 | "Network ioctl: Inference. ifm_fd=%u, ofm_fd=%u", |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 133 | uapi.ifm_fd[0], uapi.ofm_fd[0]); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 134 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 135 | ret = ethosu_rpmsg_inference_create(dev, net->mailbox, net, |
| 136 | &uapi); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 137 | break; |
| 138 | } |
| 139 | default: { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 140 | dev_err(dev, "Invalid ioctl. cmd=%u, arg=%lu", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 141 | cmd, arg); |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 142 | ret = -ENOIOCTLCMD; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 143 | break; |
| 144 | } |
| 145 | } |
| 146 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 147 | device_unlock(net->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 148 | |
| 149 | return ret; |
| 150 | } |
| 151 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 152 | int ethosu_rpmsg_network_create(struct device *dev, |
| 153 | struct ethosu_rpmsg_mailbox *mailbox, |
| 154 | struct ethosu_uapi_network_create *uapi) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 155 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 156 | struct ethosu_rpmsg_network *net; |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 157 | const void __user *data; |
| 158 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 159 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 160 | net = devm_kzalloc(dev, sizeof(*net), GFP_KERNEL); |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 161 | if (!net) { |
| 162 | dev_err(dev, "Network create. Failed to allocate struct"); |
| 163 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 164 | return -ENOMEM; |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 165 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 166 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 167 | net->dev = dev; |
| 168 | net->mailbox = mailbox; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 169 | kref_init(&net->kref); |
| 170 | |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 171 | switch (uapi->type) { |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 172 | case ETHOSU_UAPI_NETWORK_USER_BUFFER: |
| 173 | if (!uapi->network.data_ptr) { |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 174 | dev_err(dev, |
| 175 | "Network create. Invalid network data ptr"); |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 176 | ret = -EINVAL; |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 177 | goto free_net; |
| 178 | } |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 179 | |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 180 | if (!uapi->network.size) { |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 181 | dev_err(dev, |
| 182 | "Network create. Invalid network data size"); |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 183 | ret = -EINVAL; |
| 184 | goto free_net; |
| 185 | } |
| 186 | |
| 187 | net->dma_mem = ethosu_dma_mem_alloc(dev, uapi->network.size); |
| 188 | if (IS_ERR(net->dma_mem)) { |
| 189 | ret = PTR_ERR(net->dma_mem); |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 190 | dev_err(dev, |
| 191 | "Network create. Failed to allocate DMA memory. ret=%d", |
| 192 | ret); |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 193 | goto free_net; |
| 194 | } |
| 195 | |
| 196 | data = u64_to_user_ptr(uapi->network.data_ptr); |
| 197 | ret = copy_from_user(net->dma_mem->cpu_addr, data, |
| 198 | uapi->network.size); |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 199 | if (ret) { |
| 200 | dev_err(dev, |
| 201 | "Network create. Failed to copy network data from user buffer. ret=%d", |
| 202 | ret); |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 203 | goto free_dma_mem; |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 204 | } |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 205 | |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 206 | break; |
| 207 | case ETHOSU_UAPI_NETWORK_INDEX: |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 208 | net->index = uapi->index; |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 209 | break; |
| 210 | default: |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 211 | dev_err(dev, "Network create. Invalid buffer type. type=%u", |
| 212 | uapi->type); |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 213 | ret = -EINVAL; |
| 214 | goto free_net; |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 215 | } |
| 216 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 217 | ret = anon_inode_getfd("ethosu-network", ðosu_rpmsg_network_fops, |
| 218 | net, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 219 | O_RDWR | O_CLOEXEC); |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 220 | if (ret < 0) { |
| 221 | dev_err(dev, |
| 222 | "Network create. Failed to get file descriptor. ret=%d", |
| 223 | ret); |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 224 | goto free_dma_mem; |
Mikael Olsson | d80345f | 2024-04-04 17:28:52 +0200 | [diff] [blame^] | 225 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 226 | |
| 227 | net->file = fget(ret); |
| 228 | fput(net->file); |
| 229 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 230 | dev_dbg(dev, |
| 231 | "Network create. file=0x%pK, fd=%d, net=0x%pK, buf=0x%pK, index=%u", |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 232 | net->file, ret, net, net->dma_mem, net->index); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 233 | |
| 234 | return ret; |
| 235 | |
Mikael Olsson | c081e59 | 2023-10-30 11:10:56 +0100 | [diff] [blame] | 236 | free_dma_mem: |
| 237 | if (net->dma_mem != NULL) |
| 238 | ethosu_dma_mem_free(&net->dma_mem); |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 239 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 240 | free_net: |
Mikael Olsson | 1182f38 | 2023-08-10 13:25:44 +0200 | [diff] [blame] | 241 | memset(net, 0, sizeof(*net)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 242 | devm_kfree(dev, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 243 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 244 | return ret; |
| 245 | } |
| 246 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 247 | struct ethosu_rpmsg_network *ethosu_rpmsg_network_get_from_fd(int fd) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 248 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 249 | struct ethosu_rpmsg_network *net; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 250 | struct file *file; |
| 251 | |
| 252 | file = fget(fd); |
| 253 | if (!file) |
| 254 | return ERR_PTR(-EINVAL); |
| 255 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 256 | if (!ethosu_rpmsg_network_verify(file)) { |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 257 | fput(file); |
| 258 | |
| 259 | return ERR_PTR(-EINVAL); |
| 260 | } |
| 261 | |
| 262 | net = file->private_data; |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 263 | ethosu_rpmsg_network_get(net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 264 | fput(file); |
| 265 | |
| 266 | return net; |
| 267 | } |
| 268 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 269 | void ethosu_rpmsg_network_get(struct ethosu_rpmsg_network *net) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 270 | { |
| 271 | kref_get(&net->kref); |
| 272 | } |
| 273 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 274 | int ethosu_rpmsg_network_put(struct ethosu_rpmsg_network *net) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 275 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 276 | return kref_put(&net->kref, ethosu_rpmsg_network_destroy); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 277 | } |