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" |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 28 | #include "ethosu_core_rpmsg.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/errno.h> |
| 37 | #include <linux/fs.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 38 | #include <linux/io.h> |
| 39 | #include <linux/of_reserved_mem.h> |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 40 | #include <linux/remoteproc.h> |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 41 | #include <linux/slab.h> |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 42 | #include <linux/uaccess.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 43 | |
| 44 | /**************************************************************************** |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 45 | * Defines |
| 46 | ****************************************************************************/ |
| 47 | |
| 48 | #define MINOR_BASE 0 /* Minor version starts at 0 */ |
| 49 | #define MINOR_COUNT 64 /* Allocate minor versions */ |
| 50 | |
| 51 | /**************************************************************************** |
| 52 | * Variables |
| 53 | ****************************************************************************/ |
| 54 | |
| 55 | static DECLARE_BITMAP(minors, MINOR_COUNT); |
| 56 | |
| 57 | /**************************************************************************** |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 58 | * Functions |
| 59 | ****************************************************************************/ |
| 60 | |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 61 | /* Incoming messages */ |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 62 | static int ethosu_handle_rpmsg(struct rpmsg_device *rpdev, |
| 63 | void *data, |
| 64 | int len, |
| 65 | void *priv, |
| 66 | u32 src) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 67 | { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 68 | struct ethosu_device *edev = dev_get_drvdata(&rpdev->dev); |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 69 | struct device *dev = &edev->dev; |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 70 | struct ethosu_core_rpmsg *rpmsg = data; |
| 71 | int length = len - sizeof(rpmsg->header); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 72 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 73 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 74 | dev_info(dev, |
| 75 | "Msg: magic=0x%08x, type=%u, msg_id=%llu", |
| 76 | rpmsg->header.magic, rpmsg->header.type, rpmsg->header.msg_id); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 77 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 78 | switch (rpmsg->header.type) { |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 79 | case ETHOSU_CORE_MSG_ERR: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 80 | if (length != sizeof(rpmsg->error)) { |
| 81 | dev_warn(dev, |
| 82 | "Msg: Error message of incorrect size. size=%u, expected=%zu", length, |
| 83 | sizeof(rpmsg->error)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 84 | ret = -EBADMSG; |
| 85 | break; |
| 86 | } |
| 87 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 88 | rpmsg->error.msg[sizeof(rpmsg->error.msg) - 1] = '\0'; |
| 89 | dev_warn(dev, "Msg: Error. type=%u, msg=\"%s\"", |
| 90 | rpmsg->error.type, rpmsg->error.msg); |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 91 | |
| 92 | rproc_report_crash(rproc_get_by_child(dev), RPROC_FATAL_ERROR); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 93 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 94 | case ETHOSU_CORE_MSG_PING: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 95 | dev_info(dev, "Msg: Ping"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 96 | ret = ethosu_mailbox_pong(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 97 | break; |
| 98 | case ETHOSU_CORE_MSG_PONG: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 99 | dev_info(dev, "Msg: Pong"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 100 | break; |
| 101 | case ETHOSU_CORE_MSG_INFERENCE_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 102 | if (length != sizeof(rpmsg->inf_rsp)) { |
| 103 | dev_warn(dev, |
| 104 | "Msg: Inference response of incorrect size. size=%u, expected=%zu", length, |
| 105 | sizeof(rpmsg->inf_rsp)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 106 | ret = -EBADMSG; |
| 107 | break; |
| 108 | } |
| 109 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 110 | dev_info(dev, |
| 111 | "Msg: Inference response. ofm_count=%u, status=%u", |
| 112 | rpmsg->inf_rsp.ofm_count, rpmsg->inf_rsp.status); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 113 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 114 | ethosu_inference_rsp(&edev->mailbox, rpmsg->header.msg_id, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 115 | &rpmsg->inf_rsp); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 116 | break; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 117 | case ETHOSU_CORE_MSG_CANCEL_INFERENCE_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 118 | if (length != sizeof(rpmsg->cancel_rsp)) { |
| 119 | dev_warn(dev, |
| 120 | "Msg: Cancel Inference response of incorrect size. size=%u, expected=%zu", length, |
| 121 | sizeof(rpmsg->cancel_rsp)); |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 122 | ret = -EBADMSG; |
| 123 | break; |
| 124 | } |
| 125 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 126 | dev_info(dev, |
| 127 | "Msg: Cancel Inference response. status=%u", |
| 128 | rpmsg->cancel_rsp.status); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 129 | ethosu_cancel_inference_rsp(&edev->mailbox, |
| 130 | rpmsg->header.msg_id, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 131 | &rpmsg->cancel_rsp); |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 132 | break; |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 133 | case ETHOSU_CORE_MSG_VERSION_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 134 | if (length != sizeof(rpmsg->version_rsp)) { |
| 135 | dev_warn(dev, |
| 136 | "Msg: Version response of incorrect size. size=%u, expected=%zu", length, |
| 137 | sizeof(rpmsg->version_rsp)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 138 | ret = -EBADMSG; |
| 139 | break; |
| 140 | } |
| 141 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 142 | dev_info(dev, "Msg: Version response v%u.%u.%u", |
| 143 | rpmsg->version_rsp.major, rpmsg->version_rsp.minor, |
| 144 | rpmsg->version_rsp.patch); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 145 | |
| 146 | /* Check major and minor version match, else return error */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 147 | if (rpmsg->version_rsp.major != ETHOSU_CORE_MSG_VERSION_MAJOR || |
| 148 | rpmsg->version_rsp.minor != ETHOSU_CORE_MSG_VERSION_MINOR) { |
| 149 | dev_warn(dev, "Msg: Version mismatch detected! "); |
| 150 | dev_warn(dev, "Local version: v%u.%u.%u", |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 151 | ETHOSU_CORE_MSG_VERSION_MAJOR, |
| 152 | ETHOSU_CORE_MSG_VERSION_MINOR, |
| 153 | ETHOSU_CORE_MSG_VERSION_PATCH); |
| 154 | } |
| 155 | |
| 156 | break; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 157 | case ETHOSU_CORE_MSG_CAPABILITIES_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 158 | if (length != sizeof(rpmsg->cap_rsp)) { |
| 159 | dev_warn(dev, |
| 160 | "Msg: Capabilities response of incorrect size. size=%u, expected=%zu", length, |
| 161 | sizeof(rpmsg->cap_rsp)); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 162 | ret = -EBADMSG; |
| 163 | break; |
| 164 | } |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 165 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 166 | dev_info(dev, |
| 167 | "Msg: Capabilities response vs%hhu v%hhu.%hhu p%hhu av%hhu.%hhu.%hhu dv%hhu.%hhu.%hhu mcc%hhu csv%hhu cd%hhu", |
| 168 | rpmsg->cap_rsp.version_status, |
| 169 | rpmsg->cap_rsp.version_major, |
| 170 | rpmsg->cap_rsp.version_minor, |
| 171 | rpmsg->cap_rsp.product_major, |
| 172 | rpmsg->cap_rsp.arch_major_rev, |
| 173 | rpmsg->cap_rsp.arch_minor_rev, |
| 174 | rpmsg->cap_rsp.arch_patch_rev, |
| 175 | rpmsg->cap_rsp.driver_major_rev, |
| 176 | rpmsg->cap_rsp.driver_minor_rev, |
| 177 | rpmsg->cap_rsp.driver_patch_rev, |
| 178 | rpmsg->cap_rsp.macs_per_cc, |
| 179 | rpmsg->cap_rsp.cmd_stream_version, |
| 180 | rpmsg->cap_rsp.custom_dma); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 181 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 182 | ethosu_capability_rsp(&edev->mailbox, rpmsg->header.msg_id, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 183 | &rpmsg->cap_rsp); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 184 | break; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 185 | case ETHOSU_CORE_MSG_NETWORK_INFO_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 186 | if (length != sizeof(rpmsg->net_info_rsp)) { |
| 187 | dev_warn(dev, |
| 188 | "Msg: Network info response of incorrect size. size=%u, expected=%zu", length, |
| 189 | sizeof(rpmsg->net_info_rsp)); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 190 | ret = -EBADMSG; |
| 191 | break; |
| 192 | } |
| 193 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 194 | dev_info(dev, |
| 195 | "Msg: Network info response. status=%u", |
| 196 | rpmsg->net_info_rsp.status); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 197 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 198 | ethosu_network_info_rsp(&edev->mailbox, |
| 199 | rpmsg->header.msg_id, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 200 | &rpmsg->net_info_rsp); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 201 | |
| 202 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 203 | default: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 204 | /* This should not happen due to version checks */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 205 | dev_warn(dev, "Msg: Protocol error. type=%u", |
| 206 | rpmsg->header.type); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 207 | ret = -EPROTO; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 208 | break; |
| 209 | } |
| 210 | |
| 211 | return ret; |
| 212 | } |
| 213 | |
| 214 | static int ethosu_open(struct inode *inode, |
| 215 | struct file *file) |
| 216 | { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 217 | struct cdev *cdev = inode->i_cdev; |
| 218 | struct ethosu_device *edev = container_of(cdev, struct ethosu_device, |
| 219 | cdev); |
| 220 | struct rpmsg_device *rpdev = edev->rpdev; |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 221 | struct device *dev = &edev->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 222 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 223 | dev_info(dev, "Device open. file=0x%pK", file); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 224 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 225 | file->private_data = rpdev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 226 | |
| 227 | return nonseekable_open(inode, file); |
| 228 | } |
| 229 | |
| 230 | static long ethosu_ioctl(struct file *file, |
| 231 | unsigned int cmd, |
| 232 | unsigned long arg) |
| 233 | { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 234 | struct rpmsg_device *rpdev = file->private_data; |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 235 | struct ethosu_device *edev = dev_get_drvdata(&rpdev->dev); |
| 236 | struct device *dev = &edev->dev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 237 | void __user *udata = (void __user *)arg; |
| 238 | int ret = -EINVAL; |
| 239 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 240 | ret = device_lock_interruptible(dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 241 | if (ret) |
| 242 | return ret; |
| 243 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 244 | dev_info(dev, "Device ioctl. file=0x%pK, cmd=0x%x, arg=0x%lx", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 245 | file, cmd, arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 246 | |
| 247 | switch (cmd) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 248 | case ETHOSU_IOCTL_VERSION_REQ: |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 249 | dev_info(dev, "Device ioctl: Send version request"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 250 | ret = ethosu_mailbox_version_request(&edev->mailbox); |
| 251 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 252 | case ETHOSU_IOCTL_CAPABILITIES_REQ: { |
| 253 | struct ethosu_uapi_device_capabilities uapi; |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 254 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 255 | dev_info(dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 256 | "Device ioctl: Send capabilities request"); |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 257 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 258 | ret = ethosu_capabilities_request(dev, &edev->mailbox, &uapi); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 259 | if (ret) |
| 260 | break; |
| 261 | |
| 262 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 263 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 264 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 265 | case ETHOSU_IOCTL_PING: { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 266 | dev_info(dev, "Device ioctl: Send ping"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 267 | ret = ethosu_mailbox_ping(&edev->mailbox); |
| 268 | break; |
| 269 | } |
| 270 | case ETHOSU_IOCTL_BUFFER_CREATE: { |
| 271 | struct ethosu_uapi_buffer_create uapi; |
| 272 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 273 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 274 | break; |
| 275 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 276 | dev_info(dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 277 | "Device ioctl: Buffer create. capacity=%u", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 278 | uapi.capacity); |
| 279 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 280 | ret = ethosu_buffer_create(dev, uapi.capacity); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 281 | break; |
| 282 | } |
| 283 | case ETHOSU_IOCTL_NETWORK_CREATE: { |
| 284 | struct ethosu_uapi_network_create uapi; |
| 285 | |
| 286 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 287 | break; |
| 288 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 289 | dev_info(dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 290 | "Device ioctl: Network create. type=%u, fd/index=%u", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 291 | uapi.type, uapi.fd); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 292 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 293 | ret = ethosu_network_create(dev, &edev->mailbox, &uapi); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 294 | break; |
| 295 | } |
| 296 | default: { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 297 | dev_err(dev, "Invalid ioctl. cmd=%u, arg=%lu", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 298 | cmd, arg); |
| 299 | break; |
| 300 | } |
| 301 | } |
| 302 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 303 | device_unlock(dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 304 | |
| 305 | return ret; |
| 306 | } |
| 307 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 308 | static struct rpmsg_endpoint *ethosu_create_ept(struct rpmsg_device *rpdev) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 309 | { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 310 | struct device *dev = &rpdev->dev; |
| 311 | struct rpmsg_channel_info info; |
| 312 | struct rpmsg_endpoint *ept; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 313 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 314 | /* Create rpmsg endpoint */ |
| 315 | strncpy(info.name, rpdev->id.name, sizeof(info.name)); |
| 316 | info.src = 0; |
| 317 | info.dst = rpdev->dst; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 318 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 319 | dev_info(dev, "Creating rpmsg endpoint. name=%s, src=%u, dst=%u", |
| 320 | info.name, info.src, info.dst); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 321 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 322 | ept = rpmsg_create_ept(rpdev, ethosu_handle_rpmsg, NULL, info); |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 323 | if (!ept) { |
| 324 | dev_err(&rpdev->dev, "Failed to create endpoint"); |
| 325 | |
| 326 | return ERR_PTR(-EINVAL); |
| 327 | } |
| 328 | |
| 329 | return ept; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 330 | } |
| 331 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 332 | static const struct file_operations fops = { |
| 333 | .owner = THIS_MODULE, |
| 334 | .open = ðosu_open, |
| 335 | .unlocked_ioctl = ðosu_ioctl, |
| 336 | #ifdef CONFIG_COMPAT |
| 337 | .compat_ioctl = ðosu_ioctl, |
| 338 | #endif |
| 339 | }; |
| 340 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 341 | static void ethosu_dev_release(struct device *dev) |
| 342 | { |
| 343 | struct ethosu_device *edev = dev_get_drvdata(dev); |
| 344 | |
| 345 | dev_info(dev, "%s", __FUNCTION__); |
| 346 | |
| 347 | clear_bit(MINOR(edev->cdev.dev), minors); |
| 348 | |
| 349 | ethosu_mailbox_deinit(&edev->mailbox); |
| 350 | device_destroy(edev->class, edev->cdev.dev); |
| 351 | kfree(edev); |
| 352 | } |
| 353 | |
| 354 | static int ethosu_device_register(struct device *dev, |
| 355 | struct device *parent, |
| 356 | void *drvdata, |
| 357 | dev_t devt) |
| 358 | { |
| 359 | struct rproc *rproc = rproc_get_by_child(parent); |
| 360 | int ret; |
| 361 | |
| 362 | dev->parent = parent; |
| 363 | dev->release = ethosu_dev_release; |
| 364 | dev_set_drvdata(dev, drvdata); |
| 365 | |
| 366 | ret = dev_set_name(dev, "ethosu%d", MINOR(devt)); |
| 367 | if (ret) { |
| 368 | dev_err(parent, "Failed to set device name. ret=%d", ret); |
| 369 | |
| 370 | return ret; |
| 371 | } |
| 372 | |
| 373 | /* Inherit DMA settings for rproc device */ |
| 374 | ret = of_reserved_mem_device_init_by_idx(dev, |
| 375 | rproc->dev.parent->of_node, 0); |
| 376 | if (ret) { |
| 377 | dev_err(parent, "Failed to initialize reserved memory. ret=%d", |
| 378 | ret); |
| 379 | |
| 380 | return ret; |
| 381 | } |
| 382 | |
| 383 | ret = device_register(dev); |
| 384 | if (ret) { |
| 385 | dev_err(parent, "Failed to register device. ret=%d", ret); |
| 386 | |
| 387 | return ret; |
| 388 | } |
| 389 | |
| 390 | return 0; |
| 391 | } |
| 392 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 393 | int ethosu_dev_init(struct rpmsg_device *rpdev, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 394 | struct class *class, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 395 | dev_t devt) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 396 | { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 397 | struct device *dev = &rpdev->dev; |
| 398 | struct ethosu_device *edev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 399 | struct device *sysdev; |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 400 | int minor; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 401 | int ret; |
| 402 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 403 | dev_info(dev, "%s", __FUNCTION__); |
| 404 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 405 | /* Reserve minor number for device node */ |
| 406 | minor = find_first_zero_bit(minors, MINOR_COUNT); |
| 407 | if (minor >= MINOR_COUNT) { |
| 408 | dev_err(dev, "No more minor numbers."); |
| 409 | |
| 410 | return -ENOMEM; |
| 411 | } |
| 412 | |
| 413 | devt = MKDEV(MAJOR(devt), minor); |
| 414 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 415 | /* Allocate and create Ethos-U device */ |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 416 | edev = kzalloc(sizeof(*edev), GFP_KERNEL); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 417 | if (!edev) |
| 418 | return -ENOMEM; |
| 419 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 420 | dev_set_drvdata(&rpdev->dev, edev); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 421 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 422 | edev->rpdev = rpdev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 423 | edev->class = class; |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 424 | |
| 425 | /* Create device object */ |
| 426 | ret = ethosu_device_register(&edev->dev, &rpdev->dev, edev, |
| 427 | devt); |
| 428 | if (ret) |
| 429 | goto free_edev; |
| 430 | |
| 431 | /* Continue with new device */ |
| 432 | dev = &edev->dev; |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 433 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 434 | /* Create RPMsg endpoint */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 435 | edev->ept = ethosu_create_ept(rpdev); |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 436 | if (IS_ERR(edev->ept)) { |
| 437 | ret = PTR_ERR(edev->ept); |
| 438 | goto device_unregister; |
| 439 | } |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 440 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 441 | ret = ethosu_mailbox_init(&edev->mailbox, dev, edev->ept); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 442 | if (ret) |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 443 | goto device_unregister; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 444 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 445 | /* Create device node */ |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 446 | cdev_init(&edev->cdev, &fops); |
| 447 | edev->cdev.owner = THIS_MODULE; |
| 448 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 449 | cdev_set_parent(&edev->cdev, &dev->kobj); |
| 450 | |
| 451 | ret = cdev_add(&edev->cdev, devt, 1); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 452 | if (ret) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 453 | dev_err(dev, "Failed to add character device."); |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 454 | goto deinit_mailbox; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 455 | } |
| 456 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 457 | sysdev = device_create(edev->class, NULL, devt, rpdev, |
| 458 | "ethosu%d", MINOR(devt)); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 459 | if (IS_ERR(sysdev)) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 460 | dev_err(dev, "Failed to create device."); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 461 | ret = PTR_ERR(sysdev); |
| 462 | goto del_cdev; |
| 463 | } |
| 464 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 465 | set_bit(minor, minors); |
| 466 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 467 | dev_info(dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 468 | "Created Arm Ethos-U device. name=%s, major=%d, minor=%d", |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 469 | dev_name(sysdev), MAJOR(devt), MINOR(devt)); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 470 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 471 | ethosu_mailbox_ping(&edev->mailbox); |
| 472 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 473 | return 0; |
| 474 | |
| 475 | del_cdev: |
| 476 | cdev_del(&edev->cdev); |
| 477 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 478 | deinit_mailbox: |
| 479 | ethosu_mailbox_deinit(&edev->mailbox); |
| 480 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 481 | device_unregister: |
| 482 | device_unregister(dev); |
| 483 | |
| 484 | free_edev: |
| 485 | kfree(edev); |
| 486 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 487 | return ret; |
| 488 | } |
| 489 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 490 | void ethosu_dev_deinit(struct rpmsg_device *rpdev) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 491 | { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 492 | struct device *dev = &rpdev->dev; |
| 493 | struct ethosu_device *edev = dev_get_drvdata(dev); |
| 494 | |
| 495 | dev_info(dev, "%s", __FUNCTION__); |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 496 | |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 497 | ethosu_mailbox_fail(&edev->mailbox); |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 498 | rpmsg_destroy_ept(edev->ept); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 499 | cdev_del(&edev->cdev); |
Kristofer Jonsson | 074ef90 | 2023-01-23 13:05:36 +0100 | [diff] [blame^] | 500 | device_unregister(&edev->dev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 501 | } |