Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 2 | * SPDX-FileCopyrightText: Copyright 2020,2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| 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 | |
| 24 | #include "ethosu_network.h" |
| 25 | |
| 26 | #include "ethosu_buffer.h" |
| 27 | #include "ethosu_device.h" |
| 28 | #include "ethosu_inference.h" |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 29 | #include "ethosu_network_info.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 30 | #include "uapi/ethosu.h" |
| 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 | |
| 41 | static int ethosu_network_release(struct inode *inode, |
| 42 | struct file *file); |
| 43 | |
| 44 | static long ethosu_network_ioctl(struct file *file, |
| 45 | unsigned int cmd, |
| 46 | unsigned long arg); |
| 47 | |
| 48 | static const struct file_operations ethosu_network_fops = { |
| 49 | .release = ðosu_network_release, |
| 50 | .unlocked_ioctl = ðosu_network_ioctl, |
| 51 | #ifdef CONFIG_COMPAT |
| 52 | .compat_ioctl = ðosu_network_ioctl, |
| 53 | #endif |
| 54 | }; |
| 55 | |
| 56 | /**************************************************************************** |
| 57 | * Functions |
| 58 | ****************************************************************************/ |
| 59 | |
| 60 | static bool ethosu_network_verify(struct file *file) |
| 61 | { |
| 62 | return file->f_op == ðosu_network_fops; |
| 63 | } |
| 64 | |
| 65 | static void ethosu_network_destroy(struct kref *kref) |
| 66 | { |
| 67 | struct ethosu_network *net = |
| 68 | container_of(kref, struct ethosu_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 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 73 | if (net->buf != NULL) |
| 74 | ethosu_buffer_put(net->buf); |
| 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 | |
| 80 | static int ethosu_network_release(struct inode *inode, |
| 81 | struct file *file) |
| 82 | { |
| 83 | struct ethosu_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 | |
| 89 | ethosu_network_put(net); |
| 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | static long ethosu_network_ioctl(struct file *file, |
| 95 | unsigned int cmd, |
| 96 | unsigned long arg) |
| 97 | { |
| 98 | struct ethosu_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 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 111 | dev_dbg(dev, "Network ioctl: Network info. net=0x%pK\n", net); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 112 | |
Mikael Olsson | 52c563d | 2023-08-24 13:28:35 +0200 | [diff] [blame] | 113 | ret = ethosu_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))) { |
| 125 | ret = -EFAULT; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 126 | break; |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 127 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 128 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 129 | dev_dbg(dev, |
| 130 | "Network ioctl: Inference. ifm_fd=%u, ofm_fd=%u\n", |
| 131 | uapi.ifm_fd[0], uapi.ofm_fd[0]); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 132 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 133 | ret = ethosu_inference_create(dev, net->mailbox, net, &uapi); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 134 | break; |
| 135 | } |
| 136 | default: { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 137 | dev_err(dev, "Invalid ioctl. cmd=%u, arg=%lu", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 138 | cmd, arg); |
Mikael Olsson | 891156d | 2023-08-24 13:20:31 +0200 | [diff] [blame] | 139 | ret = -ENOIOCTLCMD; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 140 | break; |
| 141 | } |
| 142 | } |
| 143 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 144 | device_unlock(net->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 145 | |
| 146 | return ret; |
| 147 | } |
| 148 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 149 | int ethosu_network_create(struct device *dev, |
| 150 | struct ethosu_mailbox *mailbox, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 151 | struct ethosu_uapi_network_create *uapi) |
| 152 | { |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 153 | struct ethosu_network *net; |
| 154 | int ret = -ENOMEM; |
| 155 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 156 | net = devm_kzalloc(dev, sizeof(*net), GFP_KERNEL); |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 157 | if (!net) |
| 158 | return -ENOMEM; |
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->dev = dev; |
| 161 | net->mailbox = mailbox; |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 162 | net->buf = NULL; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 163 | kref_init(&net->kref); |
| 164 | |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 165 | switch (uapi->type) { |
| 166 | case ETHOSU_UAPI_NETWORK_BUFFER: |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 167 | net->buf = ethosu_buffer_get_from_fd(uapi->fd); |
| 168 | if (IS_ERR(net->buf)) { |
| 169 | ret = PTR_ERR(net->buf); |
| 170 | goto free_net; |
| 171 | } |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 172 | |
| 173 | break; |
| 174 | case ETHOSU_UAPI_NETWORK_INDEX: |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 175 | net->index = uapi->index; |
Mikael Olsson | 45d4799 | 2023-10-12 15:32:56 +0200 | [diff] [blame] | 176 | break; |
| 177 | default: |
| 178 | ret = -EINVAL; |
| 179 | goto free_net; |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 180 | } |
| 181 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 182 | ret = anon_inode_getfd("ethosu-network", ðosu_network_fops, net, |
| 183 | O_RDWR | O_CLOEXEC); |
| 184 | if (ret < 0) |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 185 | goto put_buf; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 186 | |
| 187 | net->file = fget(ret); |
| 188 | fput(net->file); |
| 189 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 190 | dev_dbg(dev, |
| 191 | "Network create. file=0x%pK, fd=%d, net=0x%pK, buf=0x%pK, index=%u", |
| 192 | net->file, ret, net, net->buf, net->index); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 193 | |
| 194 | return ret; |
| 195 | |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 196 | put_buf: |
| 197 | if (net->buf != NULL) |
| 198 | ethosu_buffer_put(net->buf); |
| 199 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 200 | free_net: |
Mikael Olsson | 1182f38 | 2023-08-10 13:25:44 +0200 | [diff] [blame] | 201 | memset(net, 0, sizeof(*net)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 202 | devm_kfree(dev, net); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 203 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | struct ethosu_network *ethosu_network_get_from_fd(int fd) |
| 208 | { |
| 209 | struct ethosu_network *net; |
| 210 | struct file *file; |
| 211 | |
| 212 | file = fget(fd); |
| 213 | if (!file) |
| 214 | return ERR_PTR(-EINVAL); |
| 215 | |
| 216 | if (!ethosu_network_verify(file)) { |
| 217 | fput(file); |
| 218 | |
| 219 | return ERR_PTR(-EINVAL); |
| 220 | } |
| 221 | |
| 222 | net = file->private_data; |
| 223 | ethosu_network_get(net); |
| 224 | fput(file); |
| 225 | |
| 226 | return net; |
| 227 | } |
| 228 | |
| 229 | void ethosu_network_get(struct ethosu_network *net) |
| 230 | { |
| 231 | kref_get(&net->kref); |
| 232 | } |
| 233 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 234 | int ethosu_network_put(struct ethosu_network *net) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 235 | { |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 236 | return kref_put(&net->kref, ethosu_network_destroy); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 237 | } |