Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [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 |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +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. |
| 18 | * |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 19 | */ |
| 20 | |
| 21 | /**************************************************************************** |
| 22 | * Includes |
| 23 | ****************************************************************************/ |
| 24 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 25 | #include <rpmsg/ethosu_rpmsg_capabilities.h> |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 26 | |
Mikael Olsson | d4ad9e5 | 2024-02-07 11:22:26 +0100 | [diff] [blame] | 27 | #include <common/ethosu_device.h> |
| 28 | #include <rpmsg/ethosu_rpmsg.h> |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 29 | |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/dma-mapping.h> |
| 32 | #include <linux/errno.h> |
| 33 | |
| 34 | /**************************************************************************** |
| 35 | * Defines |
| 36 | ****************************************************************************/ |
| 37 | |
| 38 | #define CAPABILITIES_RESP_TIMEOUT_MS 2000 |
| 39 | |
| 40 | /**************************************************************************** |
| 41 | * Functions |
| 42 | ****************************************************************************/ |
| 43 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 44 | static inline int ethosu_rpmsg_capabilities_send( |
| 45 | struct ethosu_rpmsg_capabilities *cap, |
| 46 | struct ethosu_rpmsg_mailbox *mailbox) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 47 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 48 | return ethosu_rpmsg_mailbox_capabilities_request(mailbox, |
| 49 | &cap->msg); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 50 | } |
| 51 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 52 | static void ethosu_rpmsg_capabilities_fail(struct ethosu_rpmsg_mailbox_msg *msg) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 53 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 54 | struct ethosu_rpmsg_capabilities *cap = |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 55 | container_of(msg, typeof(*cap), msg); |
| 56 | |
| 57 | if (completion_done(&cap->done)) |
| 58 | return; |
| 59 | |
| 60 | cap->errno = -EFAULT; |
| 61 | complete(&cap->done); |
| 62 | } |
| 63 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 64 | void ethosu_capability_rsp(struct ethosu_rpmsg_mailbox *mailbox, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame] | 65 | int msg_id, |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 66 | struct ethosu_rpmsg_capabilities_rsp *rsp) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 67 | { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 68 | struct device *dev = mailbox->dev; |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 69 | struct ethosu_rpmsg_mailbox_msg *msg; |
| 70 | struct ethosu_rpmsg_capabilities *cap; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 71 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 72 | msg = ethosu_rpmsg_mailbox_find(mailbox, msg_id, |
| 73 | ETHOSU_RPMSG_CAPABILITIES_REQ); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 74 | if (IS_ERR(msg)) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 75 | dev_warn(dev, |
Mikael Olsson | 09965b0 | 2023-06-13 12:17:04 +0200 | [diff] [blame] | 76 | "Id for capabilities msg not found. Id=0x%0x: %ld\n", |
| 77 | msg_id, PTR_ERR(msg)); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 78 | |
| 79 | return; |
| 80 | } |
| 81 | |
| 82 | cap = container_of(msg, typeof(*cap), msg); |
| 83 | |
| 84 | if (completion_done(&cap->done)) |
| 85 | return; |
| 86 | |
| 87 | cap->uapi->hw_id.version_status = rsp->version_status; |
| 88 | cap->uapi->hw_id.version_minor = rsp->version_minor; |
| 89 | cap->uapi->hw_id.version_major = rsp->version_major; |
| 90 | cap->uapi->hw_id.product_major = rsp->product_major; |
| 91 | cap->uapi->hw_id.arch_patch_rev = rsp->arch_patch_rev; |
| 92 | cap->uapi->hw_id.arch_minor_rev = rsp->arch_minor_rev; |
| 93 | cap->uapi->hw_id.arch_major_rev = rsp->arch_major_rev; |
| 94 | cap->uapi->driver_patch_rev = rsp->driver_patch_rev; |
| 95 | cap->uapi->driver_minor_rev = rsp->driver_minor_rev; |
| 96 | cap->uapi->driver_major_rev = rsp->driver_major_rev; |
| 97 | cap->uapi->hw_cfg.macs_per_cc = rsp->macs_per_cc; |
| 98 | cap->uapi->hw_cfg.cmd_stream_version = rsp->cmd_stream_version; |
| 99 | cap->uapi->hw_cfg.custom_dma = rsp->custom_dma; |
Mikael Olsson | dc18cea | 2024-02-16 11:04:46 +0100 | [diff] [blame^] | 100 | cap->uapi->hw_cfg.type = ETHOSU_DEV_SUBSYSTEM; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 101 | |
| 102 | cap->errno = 0; |
| 103 | complete(&cap->done); |
| 104 | } |
| 105 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 106 | int ethosu_rpmsg_capabilities_request(struct device *dev, |
| 107 | struct ethosu_rpmsg_mailbox *mailbox, |
| 108 | struct ethosu_uapi_device_capabilities *uapi) |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 109 | { |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 110 | struct ethosu_rpmsg_capabilities *cap; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 111 | int ret; |
| 112 | int timeout; |
| 113 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 114 | cap = devm_kzalloc(dev, sizeof(struct ethosu_rpmsg_capabilities), |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 115 | GFP_KERNEL); |
| 116 | if (!cap) |
| 117 | return -ENOMEM; |
| 118 | |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 119 | cap->dev = dev; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 120 | cap->uapi = uapi; |
| 121 | init_completion(&cap->done); |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 122 | cap->msg.fail = ethosu_rpmsg_capabilities_fail; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 123 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 124 | ret = ethosu_rpmsg_mailbox_register(mailbox, &cap->msg); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 125 | if (ret < 0) |
| 126 | goto kfree; |
| 127 | |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 128 | dev_dbg(dev, "Capabilities create. Id=%d, handle=0x%p\n", |
| 129 | cap->msg.id, cap); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 130 | |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 131 | ret = ethosu_rpmsg_capabilities_send(cap, mailbox); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 132 | if (0 != ret) |
| 133 | goto deregister; |
| 134 | |
| 135 | /* Unlock the mutex before going to block on the condition */ |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 136 | device_unlock(dev); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 137 | |
| 138 | /* wait for response to arrive back */ |
| 139 | timeout = wait_for_completion_timeout(&cap->done, |
| 140 | msecs_to_jiffies( |
| 141 | CAPABILITIES_RESP_TIMEOUT_MS)); |
| 142 | |
| 143 | /* take back the mutex before resuming to do anything */ |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 144 | device_lock(dev); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 145 | |
| 146 | if (0 == timeout) { |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 147 | dev_warn(dev, "Capabilities response timeout"); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 148 | ret = -ETIME; |
| 149 | goto deregister; |
| 150 | } |
| 151 | |
| 152 | if (cap->errno) { |
| 153 | ret = cap->errno; |
| 154 | goto deregister; |
| 155 | } |
| 156 | |
| 157 | deregister: |
Mikael Olsson | 16be285 | 2024-02-12 09:56:56 +0100 | [diff] [blame] | 158 | ethosu_rpmsg_mailbox_deregister(mailbox, &cap->msg); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 159 | |
| 160 | kfree: |
Ledion Daja | edd2550 | 2023-10-17 09:15:32 +0200 | [diff] [blame] | 161 | dev_dbg(dev, "Capabilities destroy. Id=%d, handle=0x%p\n", |
| 162 | cap->msg.id, cap); |
Kristofer Jonsson | ec47704 | 2023-01-20 13:38:13 +0100 | [diff] [blame] | 163 | devm_kfree(dev, cap); |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 164 | |
| 165 | return ret; |
| 166 | } |