Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 2 | * Copyright 2020,2022-2023 Arm Limited and/or its affiliates |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 3 | * |
| 4 | * This program is free software and is provided to you under the terms of the |
| 5 | * GNU General Public License version 2 as published by the Free Software |
| 6 | * Foundation, and any use by you of this program is subject to the terms |
| 7 | * of such GNU licence. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, you can access it online at |
| 16 | * http://www.gnu.org/licenses/gpl-2.0.html. |
| 17 | * |
| 18 | * SPDX-License-Identifier: GPL-2.0-only |
| 19 | */ |
| 20 | |
| 21 | /**************************************************************************** |
| 22 | * Includes |
| 23 | ****************************************************************************/ |
| 24 | |
| 25 | #include "ethosu_network.h" |
| 26 | |
| 27 | #include "ethosu_buffer.h" |
| 28 | #include "ethosu_device.h" |
| 29 | #include "ethosu_inference.h" |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 30 | #include "ethosu_network_info.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 31 | #include "uapi/ethosu.h" |
| 32 | |
| 33 | #include <linux/anon_inodes.h> |
| 34 | #include <linux/file.h> |
| 35 | #include <linux/fs.h> |
| 36 | #include <linux/uaccess.h> |
| 37 | |
| 38 | /**************************************************************************** |
| 39 | * Variables |
| 40 | ****************************************************************************/ |
| 41 | |
| 42 | static int ethosu_network_release(struct inode *inode, |
| 43 | struct file *file); |
| 44 | |
| 45 | static long ethosu_network_ioctl(struct file *file, |
| 46 | unsigned int cmd, |
| 47 | unsigned long arg); |
| 48 | |
| 49 | static const struct file_operations ethosu_network_fops = { |
| 50 | .release = ðosu_network_release, |
| 51 | .unlocked_ioctl = ðosu_network_ioctl, |
| 52 | #ifdef CONFIG_COMPAT |
| 53 | .compat_ioctl = ðosu_network_ioctl, |
| 54 | #endif |
| 55 | }; |
| 56 | |
| 57 | /**************************************************************************** |
| 58 | * Functions |
| 59 | ****************************************************************************/ |
| 60 | |
| 61 | static bool ethosu_network_verify(struct file *file) |
| 62 | { |
| 63 | return file->f_op == ðosu_network_fops; |
| 64 | } |
| 65 | |
| 66 | static void ethosu_network_destroy(struct kref *kref) |
| 67 | { |
| 68 | struct ethosu_network *net = |
| 69 | container_of(kref, struct ethosu_network, kref); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 70 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 71 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 72 | dev_info(dev, "Network destroy. net=0x%pK\n", net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 73 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 74 | if (net->buf != NULL) |
| 75 | ethosu_buffer_put(net->buf); |
| 76 | |
Mikael Olsson | 1182f38 | 2023-08-10 13:25:44 +0200 | [diff] [blame] | 77 | memset(net, 0, sizeof(*net)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 78 | devm_kfree(dev, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | static int ethosu_network_release(struct inode *inode, |
| 82 | struct file *file) |
| 83 | { |
| 84 | struct ethosu_network *net = file->private_data; |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 85 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 86 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 87 | dev_info(dev, "Network release. file=0x%pK, net=0x%pK\n", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 88 | file, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 89 | |
| 90 | ethosu_network_put(net); |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static long ethosu_network_ioctl(struct file *file, |
| 96 | unsigned int cmd, |
| 97 | unsigned long arg) |
| 98 | { |
| 99 | struct ethosu_network *net = file->private_data; |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 100 | struct device *dev = net->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 101 | void __user *udata = (void __user *)arg; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 102 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 103 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 104 | ret = device_lock_interruptible(net->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 105 | if (ret) |
| 106 | return ret; |
| 107 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 108 | dev_info(dev, |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 109 | "Network ioctl: file=0x%pK, net=0x%pK, cmd=0x%x, arg=0x%lx\n", |
| 110 | file, net, cmd, arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 111 | |
| 112 | switch (cmd) { |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 113 | case ETHOSU_IOCTL_NETWORK_INFO: { |
| 114 | struct ethosu_uapi_network_info uapi; |
| 115 | |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 116 | if (copy_from_user(&uapi, udata, sizeof(uapi))) { |
| 117 | ret = -EFAULT; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 118 | break; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 119 | } |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 120 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 121 | dev_info(dev, |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 122 | "Network ioctl: Network info. net=0x%pK\n", |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 123 | net); |
| 124 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 125 | ret = |
| 126 | ethosu_network_info_request(dev, net->mailbox, net, |
| 127 | &uapi); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 128 | if (ret) |
| 129 | break; |
| 130 | |
| 131 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
| 132 | break; |
| 133 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 134 | case ETHOSU_IOCTL_INFERENCE_CREATE: { |
| 135 | struct ethosu_uapi_inference_create uapi; |
| 136 | |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 137 | if (copy_from_user(&uapi, udata, sizeof(uapi))) { |
| 138 | ret = -EFAULT; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 139 | break; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 140 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 141 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 142 | dev_info(dev, |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 143 | "Network ioctl: Inference. ifm_fd=%u, ofm_fd=%u\n", |
Kristofer Jonsson | b74492c | 2020-09-10 13:26:01 +0200 | [diff] [blame] | 144 | uapi.ifm_fd[0], uapi.ofm_fd[0]); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 145 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 146 | ret = ethosu_inference_create(dev, net->mailbox, net, &uapi); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 147 | break; |
| 148 | } |
| 149 | default: { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 150 | dev_err(dev, "Invalid ioctl. cmd=%u, arg=%lu", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 151 | cmd, arg); |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame^] | 152 | ret = -ENOIOCTLCMD; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 153 | break; |
| 154 | } |
| 155 | } |
| 156 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 157 | device_unlock(net->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 158 | |
| 159 | return ret; |
| 160 | } |
| 161 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 162 | int ethosu_network_create(struct device *dev, |
| 163 | struct ethosu_mailbox *mailbox, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 164 | struct ethosu_uapi_network_create *uapi) |
| 165 | { |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 166 | struct ethosu_network *net; |
| 167 | int ret = -ENOMEM; |
| 168 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 169 | net = devm_kzalloc(dev, sizeof(*net), GFP_KERNEL); |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 170 | if (!net) |
| 171 | return -ENOMEM; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 172 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 173 | net->dev = dev; |
| 174 | net->mailbox = mailbox; |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 175 | net->buf = NULL; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 176 | kref_init(&net->kref); |
| 177 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 178 | if (uapi->type == ETHOSU_UAPI_NETWORK_BUFFER) { |
| 179 | net->buf = ethosu_buffer_get_from_fd(uapi->fd); |
| 180 | if (IS_ERR(net->buf)) { |
| 181 | ret = PTR_ERR(net->buf); |
| 182 | goto free_net; |
| 183 | } |
| 184 | } else { |
| 185 | net->index = uapi->index; |
| 186 | } |
| 187 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 188 | ret = anon_inode_getfd("ethosu-network", ðosu_network_fops, net, |
| 189 | O_RDWR | O_CLOEXEC); |
| 190 | if (ret < 0) |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 191 | goto put_buf; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 192 | |
| 193 | net->file = fget(ret); |
| 194 | fput(net->file); |
| 195 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 196 | dev_info(dev, |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 197 | "Network create. file=0x%pK, fd=%d, net=0x%pK, buf=0x%pK, index=%u", |
| 198 | net->file, ret, net, net->buf, net->index); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 199 | |
| 200 | return ret; |
| 201 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 202 | put_buf: |
| 203 | if (net->buf != NULL) |
| 204 | ethosu_buffer_put(net->buf); |
| 205 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 206 | free_net: |
Mikael Olsson | 1182f38 | 2023-08-10 13:25:44 +0200 | [diff] [blame] | 207 | memset(net, 0, sizeof(*net)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 208 | devm_kfree(dev, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 209 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 210 | return ret; |
| 211 | } |
| 212 | |
| 213 | struct ethosu_network *ethosu_network_get_from_fd(int fd) |
| 214 | { |
| 215 | struct ethosu_network *net; |
| 216 | struct file *file; |
| 217 | |
| 218 | file = fget(fd); |
| 219 | if (!file) |
| 220 | return ERR_PTR(-EINVAL); |
| 221 | |
| 222 | if (!ethosu_network_verify(file)) { |
| 223 | fput(file); |
| 224 | |
| 225 | return ERR_PTR(-EINVAL); |
| 226 | } |
| 227 | |
| 228 | net = file->private_data; |
| 229 | ethosu_network_get(net); |
| 230 | fput(file); |
| 231 | |
| 232 | return net; |
| 233 | } |
| 234 | |
| 235 | void ethosu_network_get(struct ethosu_network *net) |
| 236 | { |
| 237 | kref_get(&net->kref); |
| 238 | } |
| 239 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 240 | int ethosu_network_put(struct ethosu_network *net) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 241 | { |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 242 | return kref_put(&net->kref, ethosu_network_destroy); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 243 | } |