Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 1 | /* |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 2 | * SPDX-FileCopyrightText: Copyright 2022-2024 Arm Limited and/or its affiliates <open-source-office@arm.com> |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 3 | * SPDX-License-Identifier: GPL-2.0-only |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [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 | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /**************************************************************************** |
| 21 | * Includes |
| 22 | ****************************************************************************/ |
| 23 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 24 | #include <rpmsg/ethosu_rpmsg_network_info.h> |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 25 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 26 | #include <common/ethosu_device.h> |
| 27 | #include <rpmsg/ethosu_rpmsg_network.h> |
| 28 | #include <uapi/ethosu.h> |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 29 | |
Mikael Olsson | ea209b6 | 2023-08-15 17:01:01 +0200 | [diff] [blame] | 30 | #include <linux/bug.h> |
| 31 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 32 | #define NETWORK_INFO_RESP_TIMEOUT_MS 3000 |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 33 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 34 | static inline int ethosu_rpmsg_network_info_send( |
| 35 | struct ethosu_rpmsg_network_info *info, |
| 36 | struct ethosu_rpmsg_mailbox *mailbox) |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 37 | { |
Kristofer Jonsson | f5b98c9 | 2022-03-14 16:09:12 +0100 | [diff] [blame] | 38 | /* Send network info request to firmware */ |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 39 | return ethosu_rpmsg_mailbox_network_info_request(mailbox, |
| 40 | &info->msg, |
| 41 | info->net); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 42 | } |
| 43 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 44 | static void ethosu_rpmsg_network_info_fail(struct ethosu_rpmsg_mailbox_msg *msg) |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 45 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 46 | struct ethosu_rpmsg_network_info *info = |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 47 | container_of(msg, typeof(*info), msg); |
| 48 | |
| 49 | if (completion_done(&info->done)) |
| 50 | return; |
| 51 | |
| 52 | info->errno = -EFAULT; |
| 53 | complete(&info->done); |
| 54 | } |
| 55 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 56 | int ethosu_rpmsg_network_info_request(struct device *dev, |
| 57 | struct ethosu_rpmsg_mailbox *mailbox, |
| 58 | struct ethosu_rpmsg_network *net, |
| 59 | struct ethosu_uapi_network_info *uapi) |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 60 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 61 | struct ethosu_rpmsg_network_info *info; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 62 | int ret; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 63 | int timeout; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 64 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 65 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 66 | if (!info) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 67 | return -ENOMEM; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 68 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 69 | info->dev = dev; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 70 | info->net = net; |
| 71 | info->uapi = uapi; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 72 | init_completion(&info->done); |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 73 | info->msg.fail = ethosu_rpmsg_network_info_fail; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 74 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 75 | ret = ethosu_rpmsg_mailbox_register(mailbox, &info->msg); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 76 | if (ret < 0) |
| 77 | goto kfree; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 78 | |
| 79 | /* Get reference to network */ |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 80 | ethosu_rpmsg_network_get(info->net); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 81 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 82 | ret = ethosu_rpmsg_network_info_send(info, mailbox); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 83 | if (ret) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 84 | goto deregister; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 85 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 86 | dev_dbg(dev, |
| 87 | "Network info create. info=0x%pK, net=0x%pK, msg.id=0x%x\n", |
| 88 | info, info->net, info->msg.id); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 89 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 90 | /* Unlock the device mutex and wait for completion */ |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 91 | device_unlock(dev); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 92 | timeout = wait_for_completion_timeout(&info->done, |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 93 | msecs_to_jiffies( |
| 94 | NETWORK_INFO_RESP_TIMEOUT_MS)); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 95 | device_lock(dev); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 96 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 97 | if (0 == timeout) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 98 | dev_warn(dev, "Network info timed out. info=0x%pK", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 99 | info); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 100 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 101 | ret = -ETIME; |
| 102 | goto deregister; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 103 | } |
| 104 | |
Kristofer Jonsson | e3e2643 | 2022-06-28 11:29:42 +0200 | [diff] [blame] | 105 | ret = info->errno; |
| 106 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 107 | deregister: |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 108 | ethosu_rpmsg_mailbox_deregister(mailbox, &info->msg); |
| 109 | ethosu_rpmsg_network_put(info->net); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 110 | |
| 111 | kfree: |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 112 | dev_dbg(dev, |
| 113 | "Network info destroy. info=0x%pK, msg.id=0x%x\n", |
| 114 | info, info->msg.id); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 115 | devm_kfree(dev, info); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 116 | |
| 117 | return ret; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 118 | } |
| 119 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 120 | void ethosu_rpmsg_network_info_rsp(struct ethosu_rpmsg_mailbox *mailbox, |
| 121 | int msg_id, |
| 122 | struct ethosu_rpmsg_network_info_rsp *rsp) |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 123 | { |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 124 | int ret; |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 125 | struct device *dev = mailbox->dev; |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 126 | struct ethosu_rpmsg_mailbox_msg *msg; |
| 127 | struct ethosu_rpmsg_network_info *info; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 128 | uint32_t i; |
Mikael Olsson | ea209b6 | 2023-08-15 17:01:01 +0200 | [diff] [blame] | 129 | const size_t rsp_desc_size = sizeof(rsp->desc); |
| 130 | |
| 131 | BUILD_BUG_ON(rsp_desc_size != sizeof(info->uapi->desc)); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 132 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 133 | msg = ethosu_rpmsg_mailbox_find(mailbox, msg_id, |
| 134 | ETHOSU_RPMSG_NETWORK_INFO_REQ); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 135 | if (IS_ERR(msg)) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 136 | dev_warn(dev, |
Mikael Olsson | 09965b0 | 2023-06-13 12:17:04 +0200 | [diff] [blame] | 137 | "Id for network info msg not found. Id=0x%x: %ld\n", |
| 138 | msg_id, PTR_ERR(msg)); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 139 | |
| 140 | return; |
| 141 | } |
| 142 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 143 | info = container_of(msg, typeof(*info), msg); |
| 144 | |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 145 | if (completion_done(&info->done)) |
| 146 | return; |
| 147 | |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 148 | info->errno = 0; |
| 149 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame^] | 150 | if (rsp->status != ETHOSU_RPMSG_STATUS_OK) { |
Mikael Olsson | 42699b0 | 2023-08-16 11:25:12 +0200 | [diff] [blame] | 151 | dev_err(dev, "Failed to get information about the network\n"); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 152 | info->errno = -EBADF; |
| 153 | goto signal_complete; |
| 154 | } |
| 155 | |
| 156 | if (rsp->ifm_count > ETHOSU_FD_MAX || rsp->ofm_count > ETHOSU_FD_MAX) { |
Mikael Olsson | 42699b0 | 2023-08-16 11:25:12 +0200 | [diff] [blame] | 157 | dev_err(dev, |
| 158 | "Invalid number of IFMs/OFMs in network info: IFMs=%u OFMs=%u\n", |
| 159 | rsp->ifm_count, rsp->ofm_count); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 160 | info->errno = -ENFILE; |
| 161 | goto signal_complete; |
| 162 | } |
| 163 | |
Mikael Olsson | ea209b6 | 2023-08-15 17:01:01 +0200 | [diff] [blame] | 164 | if (strnlen(rsp->desc, rsp_desc_size) == rsp_desc_size) { |
| 165 | dev_err(dev, |
| 166 | "Description in network info is not null-terminated\n"); |
| 167 | info->errno = -EMSGSIZE; |
| 168 | goto signal_complete; |
| 169 | } |
| 170 | |
Davide Grohmann | 6ab0b6b | 2022-05-17 16:11:14 +0200 | [diff] [blame] | 171 | ret = strscpy(info->uapi->desc, rsp->desc, sizeof(info->uapi->desc)); |
| 172 | if (ret < 0) { |
Mikael Olsson | ea209b6 | 2023-08-15 17:01:01 +0200 | [diff] [blame] | 173 | dev_err(dev, "Failed to copy network info description\n"); |
Davide Grohmann | 6ab0b6b | 2022-05-17 16:11:14 +0200 | [diff] [blame] | 174 | info->errno = ret; |
| 175 | goto signal_complete; |
| 176 | } |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 177 | |
| 178 | info->uapi->ifm_count = rsp->ifm_count; |
| 179 | for (i = 0; i < rsp->ifm_count; i++) |
| 180 | info->uapi->ifm_size[i] = rsp->ifm_size[i]; |
| 181 | |
| 182 | info->uapi->ofm_count = rsp->ofm_count; |
| 183 | for (i = 0; i < rsp->ofm_count; i++) |
| 184 | info->uapi->ofm_size[i] = rsp->ofm_size[i]; |
| 185 | |
| 186 | signal_complete: |
| 187 | complete(&info->done); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 188 | } |