Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Kristofer Jonsson | b42bc0b | 2023-01-04 17:09:28 +0100 | [diff] [blame^] | 2 | * Copyright 2020-2023 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_device.h" |
| 26 | |
| 27 | #include "ethosu_buffer.h" |
| 28 | #include "ethosu_core_interface.h" |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 29 | #include "ethosu_capabilities.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 30 | #include "ethosu_inference.h" |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 31 | #include "ethosu_cancel_inference.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 32 | #include "ethosu_network.h" |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 33 | #include "ethosu_network_info.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 34 | #include "uapi/ethosu.h" |
| 35 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 36 | #include <linux/dma-mapping.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/fs.h> |
| 39 | #include <linux/interrupt.h> |
| 40 | #include <linux/io.h> |
| 41 | #include <linux/of_reserved_mem.h> |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 42 | #include <linux/slab.h> |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 43 | #include <linux/uaccess.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 44 | |
| 45 | /**************************************************************************** |
| 46 | * Defines |
| 47 | ****************************************************************************/ |
| 48 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 49 | #define DMA_ADDR_BITS 32 /* Number of address bits */ |
| 50 | |
| 51 | /**************************************************************************** |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 52 | * Functions |
| 53 | ****************************************************************************/ |
| 54 | |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 55 | /* Incoming messages */ |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 56 | static int ethosu_handle_msg(struct ethosu_device *edev) |
| 57 | { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 58 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 59 | struct ethosu_core_msg header; |
| 60 | |
| 61 | union { |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 62 | struct ethosu_core_msg_err error; |
| 63 | struct ethosu_core_inference_rsp inf; |
| 64 | struct ethosu_core_msg_version version; |
| 65 | struct ethosu_core_msg_capabilities_rsp capabilities; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 66 | struct ethosu_core_network_info_rsp network_info; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 67 | struct ethosu_core_cancel_inference_rsp cancellation; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 68 | } data; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 69 | |
| 70 | /* Read message */ |
| 71 | ret = ethosu_mailbox_read(&edev->mailbox, &header, &data, sizeof(data)); |
| 72 | if (ret) |
| 73 | return ret; |
| 74 | |
| 75 | switch (header.type) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 76 | case ETHOSU_CORE_MSG_ERR: |
| 77 | if (header.length != sizeof(data.error)) { |
| 78 | dev_warn(edev->dev, |
| 79 | "Msg: Error message of incorrect size. size=%u, expected=%zu\n", header.length, |
| 80 | sizeof(data.error)); |
| 81 | ret = -EBADMSG; |
| 82 | break; |
| 83 | } |
| 84 | |
| 85 | data.error.msg[sizeof(data.error.msg) - 1] = '\0'; |
| 86 | dev_warn(edev->dev, "Msg: Error. type=%u, msg=\"%s\"\n", |
| 87 | data.error.type, data.error.msg); |
| 88 | ret = -EBADMSG; |
| 89 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 90 | case ETHOSU_CORE_MSG_PING: |
| 91 | dev_info(edev->dev, "Msg: Ping\n"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 92 | ret = ethosu_mailbox_pong(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 93 | break; |
| 94 | case ETHOSU_CORE_MSG_PONG: |
| 95 | dev_info(edev->dev, "Msg: Pong\n"); |
| 96 | break; |
| 97 | case ETHOSU_CORE_MSG_INFERENCE_RSP: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 98 | if (header.length != sizeof(data.inf)) { |
| 99 | dev_warn(edev->dev, |
| 100 | "Msg: Inference response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 101 | sizeof(data.inf)); |
| 102 | ret = -EBADMSG; |
| 103 | break; |
| 104 | } |
| 105 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 106 | dev_info(edev->dev, |
Kristofer Jonsson | b74492c | 2020-09-10 13:26:01 +0200 | [diff] [blame] | 107 | "Msg: Inference response. user_arg=0x%llx, ofm_count=%u, status=%u\n", |
| 108 | data.inf.user_arg, data.inf.ofm_count, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 109 | data.inf.status); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 110 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 111 | ethosu_inference_rsp(edev, &data.inf); |
| 112 | break; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 113 | case ETHOSU_CORE_MSG_CANCEL_INFERENCE_RSP: |
| 114 | if (header.length != sizeof(data.cancellation)) { |
| 115 | dev_warn(edev->dev, |
| 116 | "Msg: Cancel Inference response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 117 | sizeof(data.cancellation)); |
| 118 | ret = -EBADMSG; |
| 119 | break; |
| 120 | } |
| 121 | |
| 122 | dev_info(edev->dev, |
| 123 | "Msg: Cancel Inference response. user_arg=0x%llx, status=%u\n", |
| 124 | data.cancellation.user_arg, data.cancellation.status); |
| 125 | ethosu_cancel_inference_rsp(edev, &data.cancellation); |
| 126 | break; |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 127 | case ETHOSU_CORE_MSG_VERSION_RSP: |
| 128 | if (header.length != sizeof(data.version)) { |
| 129 | dev_warn(edev->dev, |
| 130 | "Msg: Version response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 131 | sizeof(data.version)); |
| 132 | ret = -EBADMSG; |
| 133 | break; |
| 134 | } |
| 135 | |
| 136 | dev_info(edev->dev, "Msg: Version response v%u.%u.%u\n", |
| 137 | data.version.major, data.version.minor, |
| 138 | data.version.patch); |
| 139 | |
| 140 | /* Check major and minor version match, else return error */ |
| 141 | if (data.version.major != ETHOSU_CORE_MSG_VERSION_MAJOR || |
| 142 | data.version.minor != ETHOSU_CORE_MSG_VERSION_MINOR) { |
| 143 | dev_warn(edev->dev, "Msg: Version mismatch detected! "); |
| 144 | dev_warn(edev->dev, "Local version: v%u.%u.%u\n", |
| 145 | ETHOSU_CORE_MSG_VERSION_MAJOR, |
| 146 | ETHOSU_CORE_MSG_VERSION_MINOR, |
| 147 | ETHOSU_CORE_MSG_VERSION_PATCH); |
| 148 | } |
| 149 | |
| 150 | break; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 151 | case ETHOSU_CORE_MSG_CAPABILITIES_RSP: |
| 152 | if (header.length != sizeof(data.capabilities)) { |
| 153 | dev_warn(edev->dev, |
| 154 | "Msg: Capabilities response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 155 | sizeof(data.capabilities)); |
| 156 | ret = -EBADMSG; |
| 157 | break; |
| 158 | } |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 159 | |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 160 | dev_info(edev->dev, |
Davide Grohmann | 40e23d1 | 2021-06-17 09:59:40 +0200 | [diff] [blame] | 161 | "Msg: Capabilities response ua%llx vs%hhu v%hhu.%hhu p%hhu av%hhu.%hhu.%hhu dv%hhu.%hhu.%hhu mcc%hhu csv%hhu cd%hhu\n", |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 162 | data.capabilities.user_arg, |
| 163 | data.capabilities.version_status, |
| 164 | data.capabilities.version_major, |
| 165 | data.capabilities.version_minor, |
| 166 | data.capabilities.product_major, |
| 167 | data.capabilities.arch_major_rev, |
| 168 | data.capabilities.arch_minor_rev, |
| 169 | data.capabilities.arch_patch_rev, |
| 170 | data.capabilities.driver_major_rev, |
| 171 | data.capabilities.driver_minor_rev, |
| 172 | data.capabilities.driver_patch_rev, |
| 173 | data.capabilities.macs_per_cc, |
| 174 | data.capabilities.cmd_stream_version, |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 175 | data.capabilities.custom_dma); |
| 176 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 177 | ethosu_capability_rsp(edev, &data.capabilities); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 178 | break; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 179 | case ETHOSU_CORE_MSG_NETWORK_INFO_RSP: |
| 180 | if (header.length != sizeof(data.network_info)) { |
| 181 | dev_warn(edev->dev, |
| 182 | "Msg: Network info response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 183 | sizeof(data.network_info)); |
| 184 | ret = -EBADMSG; |
| 185 | break; |
| 186 | } |
| 187 | |
| 188 | dev_info(edev->dev, |
| 189 | "Msg: Network info response. user_arg=0x%llx, status=%u", |
| 190 | data.network_info.user_arg, |
| 191 | data.network_info.status); |
| 192 | |
| 193 | ethosu_network_info_rsp(edev, &data.network_info); |
| 194 | |
| 195 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 196 | default: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 197 | /* This should not happen due to version checks */ |
| 198 | dev_warn(edev->dev, "Msg: Protocol error\n"); |
| 199 | ret = -EPROTO; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 200 | break; |
| 201 | } |
| 202 | |
| 203 | return ret; |
| 204 | } |
| 205 | |
| 206 | static int ethosu_open(struct inode *inode, |
| 207 | struct file *file) |
| 208 | { |
| 209 | struct ethosu_device *edev = |
| 210 | container_of(inode->i_cdev, struct ethosu_device, cdev); |
| 211 | |
| 212 | file->private_data = edev; |
| 213 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 214 | dev_info(edev->dev, "Device open. file=0x%pK\n", file); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 215 | |
| 216 | return nonseekable_open(inode, file); |
| 217 | } |
| 218 | |
| 219 | static long ethosu_ioctl(struct file *file, |
| 220 | unsigned int cmd, |
| 221 | unsigned long arg) |
| 222 | { |
| 223 | struct ethosu_device *edev = file->private_data; |
| 224 | void __user *udata = (void __user *)arg; |
| 225 | int ret = -EINVAL; |
| 226 | |
| 227 | ret = mutex_lock_interruptible(&edev->mutex); |
| 228 | if (ret) |
| 229 | return ret; |
| 230 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 231 | dev_info(edev->dev, "Device ioctl. file=0x%pK, cmd=0x%x, arg=0x%lx\n", |
| 232 | file, cmd, arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 233 | |
| 234 | switch (cmd) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 235 | case ETHOSU_IOCTL_VERSION_REQ: |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 236 | dev_info(edev->dev, "Device ioctl: Send version request\n"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 237 | ret = ethosu_mailbox_version_request(&edev->mailbox); |
| 238 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 239 | case ETHOSU_IOCTL_CAPABILITIES_REQ: { |
| 240 | struct ethosu_uapi_device_capabilities uapi; |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 241 | |
| 242 | dev_info(edev->dev, |
| 243 | "Device ioctl: Send capabilities request\n"); |
| 244 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 245 | ret = ethosu_capabilities_request(edev, &uapi); |
| 246 | if (ret) |
| 247 | break; |
| 248 | |
| 249 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 250 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 251 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 252 | case ETHOSU_IOCTL_PING: { |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 253 | dev_info(edev->dev, "Device ioctl: Send ping\n"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 254 | ret = ethosu_mailbox_ping(&edev->mailbox); |
| 255 | break; |
| 256 | } |
| 257 | case ETHOSU_IOCTL_BUFFER_CREATE: { |
| 258 | struct ethosu_uapi_buffer_create uapi; |
| 259 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 260 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 261 | break; |
| 262 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 263 | dev_info(edev->dev, |
| 264 | "Device ioctl: Buffer create. capacity=%u\n", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 265 | uapi.capacity); |
| 266 | |
| 267 | ret = ethosu_buffer_create(edev, uapi.capacity); |
| 268 | break; |
| 269 | } |
| 270 | case ETHOSU_IOCTL_NETWORK_CREATE: { |
| 271 | struct ethosu_uapi_network_create uapi; |
| 272 | |
| 273 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 274 | break; |
| 275 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 276 | dev_info(edev->dev, |
| 277 | "Device ioctl: Network create. type=%u, fd/index=%u\n", |
| 278 | uapi.type, uapi.fd); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 279 | |
| 280 | ret = ethosu_network_create(edev, &uapi); |
| 281 | break; |
| 282 | } |
| 283 | default: { |
| 284 | dev_err(edev->dev, "Invalid ioctl. cmd=%u, arg=%lu", |
| 285 | cmd, arg); |
| 286 | break; |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | mutex_unlock(&edev->mutex); |
| 291 | |
| 292 | return ret; |
| 293 | } |
| 294 | |
| 295 | static void ethosu_mbox_rx(void *user_arg) |
| 296 | { |
| 297 | struct ethosu_device *edev = user_arg; |
| 298 | int ret; |
| 299 | |
| 300 | mutex_lock(&edev->mutex); |
| 301 | |
| 302 | do { |
| 303 | ret = ethosu_handle_msg(edev); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 304 | if (ret && ret != -ENOMSG) |
| 305 | /* Need to start over in case of error, empty the queue |
| 306 | * by fast-forwarding read position to write position. |
| 307 | * */ |
| 308 | ethosu_mailbox_reset(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 309 | } while (ret == 0); |
| 310 | |
| 311 | mutex_unlock(&edev->mutex); |
| 312 | } |
| 313 | |
| 314 | int ethosu_dev_init(struct ethosu_device *edev, |
| 315 | struct device *dev, |
| 316 | struct class *class, |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 317 | dev_t devt, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 318 | struct resource *in_queue, |
| 319 | struct resource *out_queue) |
| 320 | { |
| 321 | static const struct file_operations fops = { |
| 322 | .owner = THIS_MODULE, |
| 323 | .open = ðosu_open, |
| 324 | .unlocked_ioctl = ðosu_ioctl, |
| 325 | #ifdef CONFIG_COMPAT |
| 326 | .compat_ioctl = ðosu_ioctl, |
| 327 | #endif |
| 328 | }; |
| 329 | struct device *sysdev; |
| 330 | int ret; |
| 331 | |
| 332 | edev->dev = dev; |
| 333 | edev->class = class; |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 334 | edev->devt = devt; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 335 | mutex_init(&edev->mutex); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 336 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 337 | ret = of_reserved_mem_device_init(edev->dev); |
| 338 | if (ret) |
| 339 | return ret; |
| 340 | |
| 341 | dma_set_mask_and_coherent(edev->dev, DMA_BIT_MASK(DMA_ADDR_BITS)); |
| 342 | |
Kristofer Jonsson | b42bc0b | 2023-01-04 17:09:28 +0100 | [diff] [blame^] | 343 | ret = ethosu_mailbox_init(&edev->mailbox, dev, in_queue, out_queue, |
| 344 | ethosu_mbox_rx, edev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 345 | if (ret) |
| 346 | goto release_reserved_mem; |
| 347 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 348 | cdev_init(&edev->cdev, &fops); |
| 349 | edev->cdev.owner = THIS_MODULE; |
| 350 | |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 351 | ret = cdev_add(&edev->cdev, edev->devt, 1); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 352 | if (ret) { |
| 353 | dev_err(edev->dev, "Failed to add character device.\n"); |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 354 | goto deinit_mailbox; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | sysdev = device_create(edev->class, NULL, edev->devt, edev, |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 358 | "ethosu%d", MINOR(edev->devt)); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 359 | if (IS_ERR(sysdev)) { |
| 360 | dev_err(edev->dev, "Failed to create device.\n"); |
| 361 | ret = PTR_ERR(sysdev); |
| 362 | goto del_cdev; |
| 363 | } |
| 364 | |
| 365 | dev_info(edev->dev, |
| 366 | "Created Arm Ethos-U device. name=%s, major=%d, minor=%d\n", |
| 367 | dev_name(sysdev), MAJOR(edev->devt), MINOR(edev->devt)); |
| 368 | |
| 369 | return 0; |
| 370 | |
| 371 | del_cdev: |
| 372 | cdev_del(&edev->cdev); |
| 373 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 374 | deinit_mailbox: |
| 375 | ethosu_mailbox_deinit(&edev->mailbox); |
| 376 | |
| 377 | release_reserved_mem: |
| 378 | of_reserved_mem_device_release(edev->dev); |
| 379 | |
| 380 | return ret; |
| 381 | } |
| 382 | |
| 383 | void ethosu_dev_deinit(struct ethosu_device *edev) |
| 384 | { |
| 385 | ethosu_mailbox_deinit(&edev->mailbox); |
| 386 | device_destroy(edev->class, edev->cdev.dev); |
| 387 | cdev_del(&edev->cdev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 388 | of_reserved_mem_device_release(edev->dev); |
| 389 | |
| 390 | dev_info(edev->dev, "%s\n", __FUNCTION__); |
| 391 | } |