developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (c) 2023 MediaTek Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Author: Ren-Ting Wang <ren-ting.wang@mediatek.com> |
| 6 | */ |
| 7 | |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 8 | #include <linux/debugfs.h> |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 9 | #include <linux/device.h> |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 10 | #include <linux/err.h> |
| 11 | #include <linux/io.h> |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 12 | #include <linux/module.h> |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 13 | #include <linux/of.h> |
| 14 | #include <linux/of_address.h> |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 15 | #include <linux/of_platform.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | |
developer | 0fb30d5 | 2023-12-04 09:51:36 +0800 | [diff] [blame] | 18 | #include "tops/ctrl.h" |
| 19 | #include "tops/debugfs.h" |
| 20 | #include "tops/firmware.h" |
| 21 | #include "tops/hpdma.h" |
| 22 | #include "tops/hwspinlock.h" |
| 23 | #include "tops/internal.h" |
| 24 | #include "tops/mbox.h" |
| 25 | #include "tops/mcu.h" |
| 26 | #include "tops/netsys.h" |
| 27 | #include "tops/net-event.h" |
| 28 | #include "tops/ser.h" |
| 29 | #include "tops/tdma.h" |
| 30 | #include "tops/trm-mcu.h" |
| 31 | #include "tops/trm.h" |
| 32 | #include "tops/tunnel.h" |
| 33 | #include "tops/wdt.h" |
developer | 5d86c14 | 2023-12-06 14:18:27 +0800 | [diff] [blame^] | 34 | #include "tops/seq_gen.h" |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 35 | |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 36 | #define EFUSE_TOPS_POWER_OFF (0xD08) |
| 37 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 38 | struct device *tops_dev; |
developer | fbdb511 | 2023-08-21 15:12:14 +0800 | [diff] [blame] | 39 | struct dentry *tops_debugfs_root; |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 40 | |
| 41 | static int mtk_tops_post_init(struct platform_device *pdev) |
| 42 | { |
| 43 | int ret = 0; |
| 44 | |
| 45 | /* kick core */ |
| 46 | ret = mtk_tops_mcu_bring_up(pdev); |
| 47 | if (ret) { |
| 48 | TOPS_ERR("mcu post init failed: %d\n", ret); |
| 49 | return ret; |
| 50 | } |
| 51 | |
| 52 | /* offload tunnel protocol initialization */ |
| 53 | ret = mtk_tops_tnl_offload_proto_setup(pdev); |
| 54 | if (ret) { |
| 55 | TOPS_ERR("tnl offload protocol init failed: %d\n", ret); |
| 56 | goto err_mcu_tear_down; |
| 57 | } |
| 58 | |
| 59 | ret = mtk_tops_netevent_register(pdev); |
| 60 | if (ret) { |
| 61 | TOPS_ERR("netevent register fail: %d\n", ret); |
| 62 | goto err_offload_proto_tear_down; |
| 63 | } |
| 64 | |
| 65 | /* create sysfs file */ |
| 66 | ret = mtk_tops_ctrl_init(pdev); |
| 67 | if (ret) { |
| 68 | TOPS_ERR("ctrl init failed: %d\n", ret); |
| 69 | goto err_netevent_unregister; |
| 70 | } |
| 71 | |
| 72 | ret = mtk_tops_ser_init(pdev); |
| 73 | if (ret) { |
| 74 | TOPS_ERR("ser init failed: %d\n", ret); |
| 75 | goto err_ctrl_deinit; |
| 76 | } |
| 77 | |
| 78 | ret = mtk_tops_wdt_init(pdev); |
| 79 | if (ret) { |
| 80 | TOPS_ERR("wdt init failed: %d\n", ret); |
| 81 | goto err_ser_deinit; |
| 82 | } |
| 83 | |
developer | 0fb30d5 | 2023-12-04 09:51:36 +0800 | [diff] [blame] | 84 | ret = mtk_tops_debugfs_init(pdev); |
| 85 | if (ret) { |
| 86 | TOPS_ERR("debugfs init failed: %d\n", ret); |
| 87 | goto err_wdt_deinit; |
| 88 | } |
| 89 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 90 | return ret; |
| 91 | |
developer | 0fb30d5 | 2023-12-04 09:51:36 +0800 | [diff] [blame] | 92 | err_wdt_deinit: |
| 93 | mtk_tops_wdt_deinit(pdev); |
| 94 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 95 | err_ser_deinit: |
| 96 | mtk_tops_ser_deinit(pdev); |
| 97 | |
| 98 | err_ctrl_deinit: |
| 99 | mtk_tops_ctrl_deinit(pdev); |
| 100 | |
| 101 | err_netevent_unregister: |
| 102 | mtk_tops_netevent_unregister(pdev); |
| 103 | |
| 104 | err_offload_proto_tear_down: |
| 105 | mtk_tops_tnl_offload_proto_teardown(pdev); |
| 106 | |
| 107 | err_mcu_tear_down: |
| 108 | mtk_tops_mcu_tear_down(pdev); |
| 109 | |
| 110 | return ret; |
| 111 | } |
| 112 | |
| 113 | static int mtk_tops_probe(struct platform_device *pdev) |
| 114 | { |
| 115 | int ret = 0; |
| 116 | |
| 117 | tops_dev = &pdev->dev; |
| 118 | |
| 119 | ret = mtk_tops_hwspinlock_init(pdev); |
| 120 | if (ret) { |
| 121 | TOPS_ERR("hwspinlock init failed: %d\n", ret); |
| 122 | return ret; |
| 123 | } |
| 124 | |
| 125 | ret = mtk_tops_fw_init(pdev); |
| 126 | if (ret) { |
| 127 | TOPS_ERR("firmware init failed: %d\n", ret); |
| 128 | return ret; |
| 129 | } |
| 130 | |
| 131 | ret = mtk_tops_mcu_init(pdev); |
| 132 | if (ret) { |
| 133 | TOPS_ERR("mcu init failed: %d\n", ret); |
| 134 | return ret; |
| 135 | } |
| 136 | |
| 137 | ret = mtk_tops_netsys_init(pdev); |
| 138 | if (ret) { |
| 139 | TOPS_ERR("netsys init failed: %d\n", ret); |
| 140 | goto err_mcu_deinit; |
| 141 | } |
| 142 | |
| 143 | ret = mtk_tops_tdma_init(pdev); |
| 144 | if (ret) { |
| 145 | TOPS_ERR("tdma init failed: %d\n", ret); |
| 146 | goto err_netsys_deinit; |
| 147 | } |
| 148 | |
developer | 5d86c14 | 2023-12-06 14:18:27 +0800 | [diff] [blame^] | 149 | ret = mtk_tops_seq_gen_init(pdev); |
| 150 | if (ret) { |
| 151 | TOPS_ERR("sequence generator init failed: %d\n", ret); |
| 152 | goto err_tdma_deinit; |
| 153 | } |
| 154 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 155 | ret = mtk_tops_tnl_offload_init(pdev); |
| 156 | if (ret) { |
| 157 | TOPS_ERR("tunnel table init failed: %d\n", ret); |
| 158 | goto err_tdma_deinit; |
| 159 | } |
| 160 | |
| 161 | ret = mtk_tops_post_init(pdev); |
| 162 | if (ret) |
| 163 | goto err_tnl_offload_deinit; |
| 164 | |
| 165 | TOPS_ERR("init done\n"); |
| 166 | return ret; |
| 167 | |
| 168 | err_tnl_offload_deinit: |
| 169 | mtk_tops_tnl_offload_deinit(pdev); |
| 170 | |
| 171 | err_tdma_deinit: |
| 172 | mtk_tops_tdma_deinit(pdev); |
| 173 | |
| 174 | err_netsys_deinit: |
| 175 | mtk_tops_netsys_deinit(pdev); |
| 176 | |
| 177 | err_mcu_deinit: |
| 178 | mtk_tops_mcu_deinit(pdev); |
| 179 | |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | static int mtk_tops_remove(struct platform_device *pdev) |
| 184 | { |
developer | 0fb30d5 | 2023-12-04 09:51:36 +0800 | [diff] [blame] | 185 | mtk_tops_debugfs_init(pdev); |
| 186 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 187 | mtk_tops_wdt_deinit(pdev); |
| 188 | |
| 189 | mtk_tops_ser_deinit(pdev); |
| 190 | |
| 191 | mtk_tops_ctrl_deinit(pdev); |
| 192 | |
| 193 | mtk_tops_netevent_unregister(pdev); |
| 194 | |
| 195 | mtk_tops_tnl_offload_proto_teardown(pdev); |
| 196 | |
| 197 | mtk_tops_mcu_tear_down(pdev); |
| 198 | |
| 199 | mtk_tops_tnl_offload_deinit(pdev); |
| 200 | |
| 201 | mtk_tops_tdma_deinit(pdev); |
| 202 | |
| 203 | mtk_tops_netsys_deinit(pdev); |
| 204 | |
| 205 | mtk_tops_mcu_deinit(pdev); |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static const struct of_device_id tops_match[] = { |
| 211 | { .compatible = "mediatek,tops", }, |
| 212 | { }, |
| 213 | }; |
| 214 | MODULE_DEVICE_TABLE(of, tops_match); |
| 215 | |
| 216 | static struct platform_driver mtk_tops_driver = { |
| 217 | .probe = mtk_tops_probe, |
| 218 | .remove = mtk_tops_remove, |
| 219 | .driver = { |
| 220 | .name = "mediatek,tops", |
| 221 | .owner = THIS_MODULE, |
| 222 | .of_match_table = tops_match, |
| 223 | }, |
| 224 | }; |
| 225 | |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 226 | static int __init mtk_tops_hw_disabled(void) |
| 227 | { |
| 228 | struct platform_device *efuse_pdev; |
| 229 | struct device_node *efuse_node; |
| 230 | struct resource res; |
| 231 | void __iomem *efuse_base; |
| 232 | int ret = 0; |
| 233 | |
| 234 | efuse_node = of_find_compatible_node(NULL, NULL, "mediatek,efuse"); |
| 235 | if (!efuse_node) |
| 236 | return -ENODEV; |
| 237 | |
| 238 | efuse_pdev = of_find_device_by_node(efuse_node); |
| 239 | if (!efuse_pdev) { |
| 240 | ret = -ENODEV; |
| 241 | goto out; |
| 242 | } |
| 243 | |
| 244 | if (of_address_to_resource(efuse_node, 0, &res)) { |
| 245 | ret = -ENXIO; |
| 246 | goto out; |
| 247 | } |
| 248 | |
| 249 | /* since we are not probed yet, we cannot use devm_* API */ |
| 250 | efuse_base = ioremap(res.start, resource_size(&res)); |
| 251 | if (!efuse_base) { |
| 252 | ret = -ENOMEM; |
| 253 | goto out; |
| 254 | } |
| 255 | |
| 256 | if (readl(efuse_base + EFUSE_TOPS_POWER_OFF)) |
| 257 | ret = -ENODEV; |
| 258 | |
| 259 | iounmap(efuse_base); |
| 260 | |
| 261 | out: |
| 262 | of_node_put(efuse_node); |
| 263 | |
| 264 | return ret; |
| 265 | } |
| 266 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 267 | static int __init mtk_tops_init(void) |
| 268 | { |
developer | 6a0a710 | 2023-09-18 18:03:07 +0800 | [diff] [blame] | 269 | if (mtk_tops_hw_disabled()) |
| 270 | return -ENODEV; |
| 271 | |
developer | fbdb511 | 2023-08-21 15:12:14 +0800 | [diff] [blame] | 272 | tops_debugfs_root = debugfs_create_dir("tops", NULL); |
| 273 | if (IS_ERR(tops_debugfs_root)) { |
| 274 | TOPS_ERR("create tops debugfs root directory failed\n"); |
| 275 | return PTR_ERR(tops_debugfs_root); |
| 276 | } |
| 277 | |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 278 | mtk_tops_mbox_init(); |
| 279 | |
| 280 | mtk_tops_hpdma_init(); |
| 281 | |
| 282 | mtk_tops_trm_init(); |
| 283 | |
| 284 | return platform_driver_register(&mtk_tops_driver); |
| 285 | } |
| 286 | |
| 287 | static void __exit mtk_tops_exit(void) |
| 288 | { |
| 289 | platform_driver_unregister(&mtk_tops_driver); |
| 290 | |
| 291 | mtk_tops_trm_exit(); |
| 292 | |
| 293 | mtk_tops_hpdma_exit(); |
| 294 | |
| 295 | mtk_tops_mbox_exit(); |
developer | fbdb511 | 2023-08-21 15:12:14 +0800 | [diff] [blame] | 296 | |
| 297 | debugfs_remove_recursive(tops_debugfs_root); |
developer | e5e687d | 2023-08-08 16:05:33 +0800 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | module_init(mtk_tops_init); |
| 301 | module_exit(mtk_tops_exit); |
| 302 | |
| 303 | MODULE_LICENSE("GPL v2"); |
| 304 | MODULE_DESCRIPTION("MediaTek TOPS Driver"); |
| 305 | MODULE_AUTHOR("Ren-Ting Wang <ren-ting.wang@mediatek.com>"); |