Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Kristofer Jonsson | 35de9e6 | 2022-03-08 13:25:45 +0100 | [diff] [blame] | 2 | * Copyright (c) 2020-2022 Arm Limited. |
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> |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 42 | #include <linux/reset.h> |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 43 | #include <linux/slab.h> |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 44 | #include <linux/uaccess.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 45 | |
| 46 | /**************************************************************************** |
| 47 | * Defines |
| 48 | ****************************************************************************/ |
| 49 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 50 | #define DMA_ADDR_BITS 32 /* Number of address bits */ |
| 51 | |
| 52 | /**************************************************************************** |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 53 | * Functions |
| 54 | ****************************************************************************/ |
| 55 | |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 56 | /* Incoming messages */ |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 57 | static int ethosu_handle_msg(struct ethosu_device *edev) |
| 58 | { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 59 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 60 | struct ethosu_core_msg header; |
| 61 | |
| 62 | union { |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 63 | struct ethosu_core_msg_err error; |
| 64 | struct ethosu_core_inference_rsp inf; |
| 65 | struct ethosu_core_msg_version version; |
| 66 | struct ethosu_core_msg_capabilities_rsp capabilities; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 67 | struct ethosu_core_network_info_rsp network_info; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 68 | struct ethosu_core_cancel_inference_rsp cancellation; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 69 | } data; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 70 | |
| 71 | /* Read message */ |
| 72 | ret = ethosu_mailbox_read(&edev->mailbox, &header, &data, sizeof(data)); |
| 73 | if (ret) |
| 74 | return ret; |
| 75 | |
| 76 | switch (header.type) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 77 | case ETHOSU_CORE_MSG_ERR: |
| 78 | if (header.length != sizeof(data.error)) { |
| 79 | dev_warn(edev->dev, |
| 80 | "Msg: Error message of incorrect size. size=%u, expected=%zu\n", header.length, |
| 81 | sizeof(data.error)); |
| 82 | ret = -EBADMSG; |
| 83 | break; |
| 84 | } |
| 85 | |
| 86 | data.error.msg[sizeof(data.error.msg) - 1] = '\0'; |
| 87 | dev_warn(edev->dev, "Msg: Error. type=%u, msg=\"%s\"\n", |
| 88 | data.error.type, data.error.msg); |
| 89 | ret = -EBADMSG; |
| 90 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 91 | case ETHOSU_CORE_MSG_PING: |
| 92 | dev_info(edev->dev, "Msg: Ping\n"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 93 | ret = ethosu_mailbox_pong(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 94 | break; |
| 95 | case ETHOSU_CORE_MSG_PONG: |
| 96 | dev_info(edev->dev, "Msg: Pong\n"); |
| 97 | break; |
| 98 | case ETHOSU_CORE_MSG_INFERENCE_RSP: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 99 | if (header.length != sizeof(data.inf)) { |
| 100 | dev_warn(edev->dev, |
| 101 | "Msg: Inference response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 102 | sizeof(data.inf)); |
| 103 | ret = -EBADMSG; |
| 104 | break; |
| 105 | } |
| 106 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 107 | dev_info(edev->dev, |
Kristofer Jonsson | b74492c | 2020-09-10 13:26:01 +0200 | [diff] [blame] | 108 | "Msg: Inference response. user_arg=0x%llx, ofm_count=%u, status=%u\n", |
| 109 | data.inf.user_arg, data.inf.ofm_count, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 110 | data.inf.status); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 111 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 112 | ethosu_inference_rsp(edev, &data.inf); |
| 113 | break; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 114 | case ETHOSU_CORE_MSG_CANCEL_INFERENCE_RSP: |
| 115 | if (header.length != sizeof(data.cancellation)) { |
| 116 | dev_warn(edev->dev, |
| 117 | "Msg: Cancel Inference response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 118 | sizeof(data.cancellation)); |
| 119 | ret = -EBADMSG; |
| 120 | break; |
| 121 | } |
| 122 | |
| 123 | dev_info(edev->dev, |
| 124 | "Msg: Cancel Inference response. user_arg=0x%llx, status=%u\n", |
| 125 | data.cancellation.user_arg, data.cancellation.status); |
| 126 | ethosu_cancel_inference_rsp(edev, &data.cancellation); |
| 127 | break; |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 128 | case ETHOSU_CORE_MSG_VERSION_RSP: |
| 129 | if (header.length != sizeof(data.version)) { |
| 130 | dev_warn(edev->dev, |
| 131 | "Msg: Version response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 132 | sizeof(data.version)); |
| 133 | ret = -EBADMSG; |
| 134 | break; |
| 135 | } |
| 136 | |
| 137 | dev_info(edev->dev, "Msg: Version response v%u.%u.%u\n", |
| 138 | data.version.major, data.version.minor, |
| 139 | data.version.patch); |
| 140 | |
| 141 | /* Check major and minor version match, else return error */ |
| 142 | if (data.version.major != ETHOSU_CORE_MSG_VERSION_MAJOR || |
| 143 | data.version.minor != ETHOSU_CORE_MSG_VERSION_MINOR) { |
| 144 | dev_warn(edev->dev, "Msg: Version mismatch detected! "); |
| 145 | dev_warn(edev->dev, "Local version: v%u.%u.%u\n", |
| 146 | ETHOSU_CORE_MSG_VERSION_MAJOR, |
| 147 | ETHOSU_CORE_MSG_VERSION_MINOR, |
| 148 | ETHOSU_CORE_MSG_VERSION_PATCH); |
| 149 | } |
| 150 | |
| 151 | break; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 152 | case ETHOSU_CORE_MSG_CAPABILITIES_RSP: |
| 153 | if (header.length != sizeof(data.capabilities)) { |
| 154 | dev_warn(edev->dev, |
| 155 | "Msg: Capabilities response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 156 | sizeof(data.capabilities)); |
| 157 | ret = -EBADMSG; |
| 158 | break; |
| 159 | } |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 160 | |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 161 | dev_info(edev->dev, |
Davide Grohmann | 40e23d1 | 2021-06-17 09:59:40 +0200 | [diff] [blame] | 162 | "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] | 163 | data.capabilities.user_arg, |
| 164 | data.capabilities.version_status, |
| 165 | data.capabilities.version_major, |
| 166 | data.capabilities.version_minor, |
| 167 | data.capabilities.product_major, |
| 168 | data.capabilities.arch_major_rev, |
| 169 | data.capabilities.arch_minor_rev, |
| 170 | data.capabilities.arch_patch_rev, |
| 171 | data.capabilities.driver_major_rev, |
| 172 | data.capabilities.driver_minor_rev, |
| 173 | data.capabilities.driver_patch_rev, |
| 174 | data.capabilities.macs_per_cc, |
| 175 | data.capabilities.cmd_stream_version, |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 176 | data.capabilities.custom_dma); |
| 177 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 178 | ethosu_capability_rsp(edev, &data.capabilities); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 179 | break; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 180 | case ETHOSU_CORE_MSG_NETWORK_INFO_RSP: |
| 181 | if (header.length != sizeof(data.network_info)) { |
| 182 | dev_warn(edev->dev, |
| 183 | "Msg: Network info response of incorrect size. size=%u, expected=%zu\n", header.length, |
| 184 | sizeof(data.network_info)); |
| 185 | ret = -EBADMSG; |
| 186 | break; |
| 187 | } |
| 188 | |
| 189 | dev_info(edev->dev, |
| 190 | "Msg: Network info response. user_arg=0x%llx, status=%u", |
| 191 | data.network_info.user_arg, |
| 192 | data.network_info.status); |
| 193 | |
| 194 | ethosu_network_info_rsp(edev, &data.network_info); |
| 195 | |
| 196 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 197 | default: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 198 | /* This should not happen due to version checks */ |
| 199 | dev_warn(edev->dev, "Msg: Protocol error\n"); |
| 200 | ret = -EPROTO; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 201 | break; |
| 202 | } |
| 203 | |
| 204 | return ret; |
| 205 | } |
| 206 | |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 207 | int ethosu_firmware_reset(struct ethosu_device *edev) |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 208 | { |
| 209 | int ret; |
| 210 | |
| 211 | /* No reset control for this device */ |
| 212 | if (IS_ERR(edev->reset)) |
| 213 | return PTR_ERR(edev->reset); |
| 214 | |
| 215 | dev_info(edev->dev, "Resetting firmware."); |
| 216 | |
| 217 | ret = reset_control_assert(edev->reset); |
| 218 | if (ret) { |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 219 | dev_err(edev->dev, "Failed to reset assert firmware. ret=%d", |
| 220 | ret); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 221 | |
| 222 | return ret; |
| 223 | } |
| 224 | |
| 225 | /* Initialize mailbox header with illegal values */ |
| 226 | ethosu_mailbox_wait_prepare(&edev->mailbox); |
| 227 | |
| 228 | /* If this call fails we have a problem. We managed halt the firmware, |
| 229 | * but not to release the reset. |
| 230 | */ |
| 231 | ret = reset_control_deassert(edev->reset); |
| 232 | if (ret) { |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 233 | dev_err(edev->dev, "Failed to reset deassert firmware. ret=%d", |
| 234 | ret); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 235 | goto fail; |
| 236 | } |
| 237 | |
| 238 | /* Wait for firmware to boot up and initialize mailbox */ |
| 239 | ret = ethosu_mailbox_wait_firmware(&edev->mailbox); |
| 240 | if (ret) { |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 241 | dev_err(edev->dev, "Wait on firmware boot timed out. ret=%d", |
| 242 | ret); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 243 | goto fail; |
| 244 | } |
| 245 | |
| 246 | edev->mailbox.ping_count = 0; |
| 247 | ethosu_watchdog_reset(&edev->watchdog); |
| 248 | |
| 249 | ret = ethosu_mailbox_ping(&edev->mailbox); |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 250 | if (ret) { |
| 251 | dev_warn(edev->dev, |
| 252 | "Failed to send ping after firmware reset. ret=%d", |
| 253 | ret); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 254 | goto fail; |
Davide Grohmann | 8b1fe55 | 2022-04-07 16:58:32 +0200 | [diff] [blame] | 255 | } |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 256 | |
| 257 | /* Resend messages */ |
| 258 | ethosu_mailbox_resend(&edev->mailbox); |
| 259 | |
| 260 | return ret; |
| 261 | |
| 262 | fail: |
| 263 | ethosu_mailbox_fail(&edev->mailbox); |
| 264 | |
| 265 | return ret; |
| 266 | } |
| 267 | |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 268 | static void ethosu_watchdog_callback(struct ethosu_watchdog *wdog) |
| 269 | { |
| 270 | struct ethosu_device *edev = |
| 271 | container_of(wdog, struct ethosu_device, watchdog); |
| 272 | |
| 273 | mutex_lock(&edev->mutex); |
| 274 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 275 | dev_warn(edev->dev, "Device watchdog timeout. ping_count=%u", |
| 276 | edev->mailbox.ping_count); |
| 277 | |
| 278 | if (edev->mailbox.ping_count < 1) |
| 279 | ethosu_mailbox_ping(&edev->mailbox); |
| 280 | else |
| 281 | ethosu_firmware_reset(edev); |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 282 | |
| 283 | mutex_unlock(&edev->mutex); |
| 284 | } |
| 285 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 286 | static int ethosu_open(struct inode *inode, |
| 287 | struct file *file) |
| 288 | { |
| 289 | struct ethosu_device *edev = |
| 290 | container_of(inode->i_cdev, struct ethosu_device, cdev); |
| 291 | |
| 292 | file->private_data = edev; |
| 293 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 294 | dev_info(edev->dev, "Device open. file=0x%pK\n", file); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 295 | |
| 296 | return nonseekable_open(inode, file); |
| 297 | } |
| 298 | |
| 299 | static long ethosu_ioctl(struct file *file, |
| 300 | unsigned int cmd, |
| 301 | unsigned long arg) |
| 302 | { |
| 303 | struct ethosu_device *edev = file->private_data; |
| 304 | void __user *udata = (void __user *)arg; |
| 305 | int ret = -EINVAL; |
| 306 | |
| 307 | ret = mutex_lock_interruptible(&edev->mutex); |
| 308 | if (ret) |
| 309 | return ret; |
| 310 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 311 | dev_info(edev->dev, "Device ioctl. file=0x%pK, cmd=0x%x, arg=0x%lx\n", |
| 312 | file, cmd, arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 313 | |
| 314 | switch (cmd) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 315 | case ETHOSU_IOCTL_VERSION_REQ: |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 316 | dev_info(edev->dev, "Device ioctl: Send version request\n"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 317 | ret = ethosu_mailbox_version_request(&edev->mailbox); |
| 318 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 319 | case ETHOSU_IOCTL_CAPABILITIES_REQ: { |
| 320 | struct ethosu_uapi_device_capabilities uapi; |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 321 | |
| 322 | dev_info(edev->dev, |
| 323 | "Device ioctl: Send capabilities request\n"); |
| 324 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 325 | ret = ethosu_capabilities_request(edev, &uapi); |
| 326 | if (ret) |
| 327 | break; |
| 328 | |
| 329 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 330 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 331 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 332 | case ETHOSU_IOCTL_PING: { |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 333 | dev_info(edev->dev, "Device ioctl: Send ping\n"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 334 | ret = ethosu_mailbox_ping(&edev->mailbox); |
| 335 | break; |
| 336 | } |
| 337 | case ETHOSU_IOCTL_BUFFER_CREATE: { |
| 338 | struct ethosu_uapi_buffer_create uapi; |
| 339 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 340 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 341 | break; |
| 342 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 343 | dev_info(edev->dev, |
| 344 | "Device ioctl: Buffer create. capacity=%u\n", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 345 | uapi.capacity); |
| 346 | |
| 347 | ret = ethosu_buffer_create(edev, uapi.capacity); |
| 348 | break; |
| 349 | } |
| 350 | case ETHOSU_IOCTL_NETWORK_CREATE: { |
| 351 | struct ethosu_uapi_network_create uapi; |
| 352 | |
| 353 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 354 | break; |
| 355 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 356 | dev_info(edev->dev, |
| 357 | "Device ioctl: Network create. type=%u, fd/index=%u\n", |
| 358 | uapi.type, uapi.fd); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 359 | |
| 360 | ret = ethosu_network_create(edev, &uapi); |
| 361 | break; |
| 362 | } |
| 363 | default: { |
| 364 | dev_err(edev->dev, "Invalid ioctl. cmd=%u, arg=%lu", |
| 365 | cmd, arg); |
| 366 | break; |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | mutex_unlock(&edev->mutex); |
| 371 | |
| 372 | return ret; |
| 373 | } |
| 374 | |
| 375 | static void ethosu_mbox_rx(void *user_arg) |
| 376 | { |
| 377 | struct ethosu_device *edev = user_arg; |
| 378 | int ret; |
| 379 | |
| 380 | mutex_lock(&edev->mutex); |
| 381 | |
| 382 | do { |
| 383 | ret = ethosu_handle_msg(edev); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 384 | if (ret && ret != -ENOMSG) |
| 385 | /* Need to start over in case of error, empty the queue |
| 386 | * by fast-forwarding read position to write position. |
| 387 | * */ |
| 388 | ethosu_mailbox_reset(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 389 | } while (ret == 0); |
| 390 | |
| 391 | mutex_unlock(&edev->mutex); |
| 392 | } |
| 393 | |
| 394 | int ethosu_dev_init(struct ethosu_device *edev, |
| 395 | struct device *dev, |
| 396 | struct class *class, |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 397 | dev_t devt, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 398 | struct resource *in_queue, |
| 399 | struct resource *out_queue) |
| 400 | { |
| 401 | static const struct file_operations fops = { |
| 402 | .owner = THIS_MODULE, |
| 403 | .open = ðosu_open, |
| 404 | .unlocked_ioctl = ðosu_ioctl, |
| 405 | #ifdef CONFIG_COMPAT |
| 406 | .compat_ioctl = ðosu_ioctl, |
| 407 | #endif |
| 408 | }; |
| 409 | struct device *sysdev; |
| 410 | int ret; |
| 411 | |
| 412 | edev->dev = dev; |
| 413 | edev->class = class; |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 414 | edev->devt = devt; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 415 | mutex_init(&edev->mutex); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 416 | |
| 417 | edev->reset = devm_reset_control_get_by_index(edev->dev, 0); |
| 418 | if (IS_ERR(edev->reset)) |
| 419 | dev_warn(edev->dev, "No reset control found for this device."); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 420 | |
| 421 | ret = of_reserved_mem_device_init(edev->dev); |
| 422 | if (ret) |
| 423 | return ret; |
| 424 | |
| 425 | dma_set_mask_and_coherent(edev->dev, DMA_BIT_MASK(DMA_ADDR_BITS)); |
| 426 | |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 427 | ret = ethosu_watchdog_init(&edev->watchdog, dev, |
| 428 | ethosu_watchdog_callback); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 429 | if (ret) |
| 430 | goto release_reserved_mem; |
| 431 | |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 432 | ret = ethosu_mailbox_init(&edev->mailbox, dev, in_queue, out_queue, |
| 433 | ethosu_mbox_rx, edev, &edev->watchdog); |
| 434 | if (ret) |
| 435 | goto deinit_watchdog; |
| 436 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 437 | cdev_init(&edev->cdev, &fops); |
| 438 | edev->cdev.owner = THIS_MODULE; |
| 439 | |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 440 | ret = cdev_add(&edev->cdev, edev->devt, 1); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 441 | if (ret) { |
| 442 | dev_err(edev->dev, "Failed to add character device.\n"); |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 443 | goto deinit_mailbox; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 444 | } |
| 445 | |
| 446 | sysdev = device_create(edev->class, NULL, edev->devt, edev, |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 447 | "ethosu%d", MINOR(edev->devt)); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 448 | if (IS_ERR(sysdev)) { |
| 449 | dev_err(edev->dev, "Failed to create device.\n"); |
| 450 | ret = PTR_ERR(sysdev); |
| 451 | goto del_cdev; |
| 452 | } |
| 453 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 454 | ethosu_firmware_reset(edev); |
| 455 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 456 | dev_info(edev->dev, |
| 457 | "Created Arm Ethos-U device. name=%s, major=%d, minor=%d\n", |
| 458 | dev_name(sysdev), MAJOR(edev->devt), MINOR(edev->devt)); |
| 459 | |
| 460 | return 0; |
| 461 | |
| 462 | del_cdev: |
| 463 | cdev_del(&edev->cdev); |
| 464 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 465 | deinit_mailbox: |
| 466 | ethosu_mailbox_deinit(&edev->mailbox); |
| 467 | |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 468 | deinit_watchdog: |
| 469 | ethosu_watchdog_deinit(&edev->watchdog); |
| 470 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 471 | release_reserved_mem: |
| 472 | of_reserved_mem_device_release(edev->dev); |
| 473 | |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | void ethosu_dev_deinit(struct ethosu_device *edev) |
| 478 | { |
| 479 | ethosu_mailbox_deinit(&edev->mailbox); |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 480 | ethosu_watchdog_deinit(&edev->watchdog); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 481 | device_destroy(edev->class, edev->cdev.dev); |
| 482 | cdev_del(&edev->cdev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 483 | of_reserved_mem_device_release(edev->dev); |
| 484 | |
| 485 | dev_info(edev->dev, "%s\n", __FUNCTION__); |
| 486 | } |