Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright 2019-2021 NXP |
| 4 | */ |
| 5 | |
| 6 | #include <net/dsa.h> |
| 7 | #include <dm/lists.h> |
| 8 | #include <dm/device_compat.h> |
| 9 | #include <dm/device-internal.h> |
| 10 | #include <dm/uclass-internal.h> |
| 11 | #include <linux/bitmap.h> |
| 12 | #include <miiphy.h> |
| 13 | |
| 14 | #define DSA_PORT_CHILD_DRV_NAME "dsa-port" |
| 15 | |
| 16 | /* per-device internal state structure */ |
| 17 | struct dsa_priv { |
| 18 | struct phy_device *cpu_port_fixed_phy; |
| 19 | struct udevice *master_dev; |
| 20 | int num_ports; |
| 21 | u32 cpu_port; |
| 22 | int headroom; |
| 23 | int tailroom; |
| 24 | }; |
| 25 | |
| 26 | /* external API */ |
| 27 | int dsa_set_tagging(struct udevice *dev, ushort headroom, ushort tailroom) |
| 28 | { |
| 29 | struct dsa_priv *priv; |
| 30 | |
Michael Walle | 108157c | 2021-02-24 17:40:41 +0100 | [diff] [blame] | 31 | if (!dev) |
| 32 | return -EINVAL; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 33 | |
| 34 | if (headroom + tailroom > DSA_MAX_OVR) |
| 35 | return -EINVAL; |
| 36 | |
| 37 | priv = dev_get_uclass_priv(dev); |
| 38 | |
| 39 | if (headroom > 0) |
| 40 | priv->headroom = headroom; |
| 41 | if (tailroom > 0) |
| 42 | priv->tailroom = tailroom; |
| 43 | |
| 44 | return 0; |
| 45 | } |
| 46 | |
Vladimir Oltean | 0783b16 | 2021-09-29 18:04:38 +0300 | [diff] [blame] | 47 | ofnode dsa_port_get_ofnode(struct udevice *dev, int port) |
| 48 | { |
| 49 | struct dsa_pdata *pdata = dev_get_uclass_plat(dev); |
| 50 | struct dsa_port_pdata *port_pdata; |
| 51 | struct udevice *pdev; |
| 52 | |
| 53 | if (port == pdata->cpu_port) |
| 54 | return pdata->cpu_port_node; |
| 55 | |
| 56 | for (device_find_first_child(dev, &pdev); |
| 57 | pdev; |
| 58 | device_find_next_child(&pdev)) { |
| 59 | port_pdata = dev_get_parent_plat(pdev); |
| 60 | if (port_pdata->index == port) |
| 61 | return dev_ofnode(pdev); |
| 62 | } |
| 63 | |
| 64 | return ofnode_null(); |
| 65 | } |
| 66 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 67 | /* returns the DSA master Ethernet device */ |
| 68 | struct udevice *dsa_get_master(struct udevice *dev) |
| 69 | { |
Michael Walle | 108157c | 2021-02-24 17:40:41 +0100 | [diff] [blame] | 70 | struct dsa_priv *priv; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 71 | |
Michael Walle | 108157c | 2021-02-24 17:40:41 +0100 | [diff] [blame] | 72 | if (!dev) |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 73 | return NULL; |
| 74 | |
Michael Walle | 108157c | 2021-02-24 17:40:41 +0100 | [diff] [blame] | 75 | priv = dev_get_uclass_priv(dev); |
| 76 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 77 | return priv->master_dev; |
| 78 | } |
| 79 | |
| 80 | /* |
| 81 | * Start the desired port, the CPU port and the master Eth interface. |
| 82 | * TODO: if cascaded we may need to _start ports in other switches too |
| 83 | */ |
| 84 | static int dsa_port_start(struct udevice *pdev) |
| 85 | { |
| 86 | struct udevice *dev = dev_get_parent(pdev); |
| 87 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
| 88 | struct udevice *master = dsa_get_master(dev); |
| 89 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 90 | int err; |
| 91 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 92 | if (ops->port_enable) { |
| 93 | struct dsa_port_pdata *port_pdata; |
| 94 | |
| 95 | port_pdata = dev_get_parent_plat(pdev); |
| 96 | err = ops->port_enable(dev, port_pdata->index, |
| 97 | port_pdata->phy); |
| 98 | if (err) |
| 99 | return err; |
| 100 | |
| 101 | err = ops->port_enable(dev, priv->cpu_port, |
| 102 | priv->cpu_port_fixed_phy); |
| 103 | if (err) |
| 104 | return err; |
| 105 | } |
| 106 | |
| 107 | return eth_get_ops(master)->start(master); |
| 108 | } |
| 109 | |
| 110 | /* Stop the desired port, the CPU port and the master Eth interface */ |
| 111 | static void dsa_port_stop(struct udevice *pdev) |
| 112 | { |
| 113 | struct udevice *dev = dev_get_parent(pdev); |
| 114 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
| 115 | struct udevice *master = dsa_get_master(dev); |
| 116 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 117 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 118 | if (ops->port_disable) { |
| 119 | struct dsa_port_pdata *port_pdata; |
| 120 | |
| 121 | port_pdata = dev_get_parent_plat(pdev); |
| 122 | ops->port_disable(dev, port_pdata->index, port_pdata->phy); |
Vladimir Oltean | 5cc283b | 2021-09-18 14:49:55 +0300 | [diff] [blame] | 123 | ops->port_disable(dev, priv->cpu_port, priv->cpu_port_fixed_phy); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 124 | } |
| 125 | |
Michael Walle | 7145553 | 2021-02-24 17:40:42 +0100 | [diff] [blame] | 126 | eth_get_ops(master)->stop(master); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Insert a DSA tag and call master Ethernet send on the resulting packet |
| 131 | * We copy the frame to a stack buffer where we have reserved headroom and |
| 132 | * tailroom space. Headroom and tailroom are set to 0. |
| 133 | */ |
| 134 | static int dsa_port_send(struct udevice *pdev, void *packet, int length) |
| 135 | { |
| 136 | struct udevice *dev = dev_get_parent(pdev); |
| 137 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
| 138 | int head = priv->headroom, tail = priv->tailroom; |
| 139 | struct udevice *master = dsa_get_master(dev); |
| 140 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 141 | uchar dsa_packet_tmp[PKTSIZE_ALIGN]; |
| 142 | struct dsa_port_pdata *port_pdata; |
| 143 | int err; |
| 144 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 145 | if (length + head + tail > PKTSIZE_ALIGN) |
| 146 | return -EINVAL; |
| 147 | |
| 148 | memset(dsa_packet_tmp, 0, head); |
| 149 | memset(dsa_packet_tmp + head + length, 0, tail); |
| 150 | memcpy(dsa_packet_tmp + head, packet, length); |
| 151 | length += head + tail; |
| 152 | /* copy back to preserve original buffer alignment */ |
| 153 | memcpy(packet, dsa_packet_tmp, length); |
| 154 | |
| 155 | port_pdata = dev_get_parent_plat(pdev); |
| 156 | err = ops->xmit(dev, port_pdata->index, packet, length); |
| 157 | if (err) |
| 158 | return err; |
| 159 | |
| 160 | return eth_get_ops(master)->send(master, packet, length); |
| 161 | } |
| 162 | |
| 163 | /* Receive a frame from master Ethernet, process it and pass it on */ |
| 164 | static int dsa_port_recv(struct udevice *pdev, int flags, uchar **packetp) |
| 165 | { |
| 166 | struct udevice *dev = dev_get_parent(pdev); |
| 167 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
| 168 | int head = priv->headroom, tail = priv->tailroom; |
| 169 | struct udevice *master = dsa_get_master(dev); |
| 170 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 171 | struct dsa_port_pdata *port_pdata; |
| 172 | int length, port_index, err; |
| 173 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 174 | length = eth_get_ops(master)->recv(master, flags, packetp); |
| 175 | if (length <= 0) |
| 176 | return length; |
| 177 | |
| 178 | /* |
| 179 | * If we receive frames from a different port or frames that DSA driver |
| 180 | * doesn't like we discard them here. |
| 181 | * In case of discard we return with no frame and expect to be called |
| 182 | * again instead of looping here, so upper layer can deal with timeouts. |
| 183 | */ |
| 184 | port_pdata = dev_get_parent_plat(pdev); |
| 185 | err = ops->rcv(dev, &port_index, *packetp, length); |
| 186 | if (err || port_index != port_pdata->index || (length <= head + tail)) { |
| 187 | if (eth_get_ops(master)->free_pkt) |
| 188 | eth_get_ops(master)->free_pkt(master, *packetp, length); |
| 189 | return -EAGAIN; |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * We move the pointer over headroom here to avoid a copy. If free_pkt |
| 194 | * gets called we move the pointer back before calling master free_pkt. |
| 195 | */ |
| 196 | *packetp += head; |
| 197 | |
| 198 | return length - head - tail; |
| 199 | } |
| 200 | |
| 201 | static int dsa_port_free_pkt(struct udevice *pdev, uchar *packet, int length) |
| 202 | { |
| 203 | struct udevice *dev = dev_get_parent(pdev); |
| 204 | struct udevice *master = dsa_get_master(dev); |
| 205 | struct dsa_priv *priv; |
| 206 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 207 | priv = dev_get_uclass_priv(dev); |
| 208 | if (eth_get_ops(master)->free_pkt) { |
| 209 | /* return the original pointer and length to master Eth */ |
| 210 | packet -= priv->headroom; |
| 211 | length += priv->headroom - priv->tailroom; |
| 212 | |
| 213 | return eth_get_ops(master)->free_pkt(master, packet, length); |
| 214 | } |
| 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | static int dsa_port_of_to_pdata(struct udevice *pdev) |
| 220 | { |
| 221 | struct dsa_port_pdata *port_pdata; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 222 | struct eth_pdata *eth_pdata; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 223 | const char *label; |
| 224 | u32 index; |
| 225 | int err; |
| 226 | |
| 227 | if (!pdev) |
| 228 | return -ENODEV; |
| 229 | |
| 230 | err = ofnode_read_u32(dev_ofnode(pdev), "reg", &index); |
| 231 | if (err) |
| 232 | return err; |
| 233 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 234 | port_pdata = dev_get_parent_plat(pdev); |
| 235 | port_pdata->index = index; |
| 236 | |
| 237 | label = ofnode_read_string(dev_ofnode(pdev), "label"); |
| 238 | if (label) |
Vladimir Oltean | 4fdc7e3 | 2021-09-27 14:22:03 +0300 | [diff] [blame] | 239 | strlcpy(port_pdata->name, label, DSA_PORT_NAME_LENGTH); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 240 | |
| 241 | eth_pdata = dev_get_plat(pdev); |
| 242 | eth_pdata->priv_pdata = port_pdata; |
| 243 | |
| 244 | dev_dbg(pdev, "port %d node %s\n", port_pdata->index, |
| 245 | ofnode_get_name(dev_ofnode(pdev))); |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | static const struct eth_ops dsa_port_ops = { |
| 251 | .start = dsa_port_start, |
| 252 | .send = dsa_port_send, |
| 253 | .recv = dsa_port_recv, |
| 254 | .stop = dsa_port_stop, |
| 255 | .free_pkt = dsa_port_free_pkt, |
| 256 | }; |
| 257 | |
Vladimir Oltean | 5eee5ab | 2021-08-24 15:00:40 +0300 | [diff] [blame] | 258 | /* |
| 259 | * Inherit port's hwaddr from the DSA master, unless the port already has a |
| 260 | * unique MAC address specified in the environment. |
| 261 | */ |
| 262 | static void dsa_port_set_hwaddr(struct udevice *pdev, struct udevice *master) |
| 263 | { |
| 264 | struct eth_pdata *eth_pdata, *master_pdata; |
| 265 | unsigned char env_enetaddr[ARP_HLEN]; |
| 266 | |
| 267 | eth_env_get_enetaddr_by_index("eth", dev_seq(pdev), env_enetaddr); |
| 268 | if (!is_zero_ethaddr(env_enetaddr)) { |
| 269 | /* individual port mac addrs require master to be promisc */ |
| 270 | struct eth_ops *eth_ops = eth_get_ops(master); |
| 271 | |
| 272 | if (eth_ops->set_promisc) |
Bin Meng | c7ae46ef | 2021-11-01 14:15:10 +0800 | [diff] [blame] | 273 | eth_ops->set_promisc(master, true); |
Vladimir Oltean | 5eee5ab | 2021-08-24 15:00:40 +0300 | [diff] [blame] | 274 | |
| 275 | return; |
| 276 | } |
| 277 | |
| 278 | master_pdata = dev_get_plat(master); |
| 279 | eth_pdata = dev_get_plat(pdev); |
| 280 | memcpy(eth_pdata->enetaddr, master_pdata->enetaddr, ARP_HLEN); |
| 281 | eth_env_set_enetaddr_by_index("eth", dev_seq(pdev), |
| 282 | master_pdata->enetaddr); |
| 283 | } |
| 284 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 285 | static int dsa_port_probe(struct udevice *pdev) |
| 286 | { |
| 287 | struct udevice *dev = dev_get_parent(pdev); |
Vladimir Oltean | 4b46e83 | 2021-08-24 15:00:41 +0300 | [diff] [blame] | 288 | struct dsa_ops *ops = dsa_get_ops(dev); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 289 | struct dsa_port_pdata *port_pdata; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 290 | struct udevice *master; |
Vladimir Oltean | f4b712b | 2021-08-24 15:00:39 +0300 | [diff] [blame] | 291 | int err; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 292 | |
| 293 | port_pdata = dev_get_parent_plat(pdev); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 294 | |
| 295 | port_pdata->phy = dm_eth_phy_connect(pdev); |
| 296 | if (!port_pdata->phy) |
| 297 | return -ENODEV; |
| 298 | |
Michael Walle | a02dcbb | 2021-02-24 17:40:39 +0100 | [diff] [blame] | 299 | master = dsa_get_master(dev); |
| 300 | if (!master) |
| 301 | return -ENODEV; |
| 302 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 303 | /* |
Michael Walle | e5d7d11 | 2021-02-24 17:40:40 +0100 | [diff] [blame] | 304 | * Probe the master device. We depend on the master device for proper |
| 305 | * operation and we also need it for MAC inheritance below. |
Michael Walle | 7145553 | 2021-02-24 17:40:42 +0100 | [diff] [blame] | 306 | * |
| 307 | * TODO: we assume the master device is always there and doesn't get |
| 308 | * removed during runtime. |
Michael Walle | e5d7d11 | 2021-02-24 17:40:40 +0100 | [diff] [blame] | 309 | */ |
Vladimir Oltean | f4b712b | 2021-08-24 15:00:39 +0300 | [diff] [blame] | 310 | err = device_probe(master); |
| 311 | if (err) |
| 312 | return err; |
Michael Walle | e5d7d11 | 2021-02-24 17:40:40 +0100 | [diff] [blame] | 313 | |
Vladimir Oltean | 5eee5ab | 2021-08-24 15:00:40 +0300 | [diff] [blame] | 314 | dsa_port_set_hwaddr(pdev, master); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 315 | |
Vladimir Oltean | 4b46e83 | 2021-08-24 15:00:41 +0300 | [diff] [blame] | 316 | if (ops->port_probe) { |
| 317 | err = ops->port_probe(dev, port_pdata->index, |
| 318 | port_pdata->phy); |
| 319 | if (err) |
| 320 | return err; |
| 321 | } |
| 322 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | static int dsa_port_remove(struct udevice *pdev) |
| 327 | { |
Vladimir Oltean | 5ecdf0a | 2021-09-18 14:49:56 +0300 | [diff] [blame] | 328 | struct dsa_port_pdata *port_pdata = dev_get_parent_plat(pdev); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 329 | |
| 330 | port_pdata->phy = NULL; |
| 331 | |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | U_BOOT_DRIVER(dsa_port) = { |
| 336 | .name = DSA_PORT_CHILD_DRV_NAME, |
| 337 | .id = UCLASS_ETH, |
| 338 | .ops = &dsa_port_ops, |
| 339 | .probe = dsa_port_probe, |
| 340 | .remove = dsa_port_remove, |
| 341 | .of_to_plat = dsa_port_of_to_pdata, |
| 342 | .plat_auto = sizeof(struct eth_pdata), |
| 343 | }; |
| 344 | |
Tim Harvey | 43c2a00 | 2022-11-30 09:42:46 -0800 | [diff] [blame^] | 345 | static int dsa_sanitize_ops(struct udevice *dev) |
| 346 | { |
| 347 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 348 | |
| 349 | if ((!ops->xmit || !ops->rcv) && |
| 350 | (!ops->port_enable && !ops->port_disable)) { |
| 351 | dev_err(dev, "Packets cannot be steered to ports\n"); |
| 352 | return -EINVAL; |
| 353 | } |
| 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 358 | /* |
| 359 | * This function mostly deals with pulling information out of the device tree |
| 360 | * into the pdata structure. |
| 361 | * It goes through the list of switch ports, registers an eth device for each |
| 362 | * front panel port and identifies the cpu port connected to master eth device. |
| 363 | * TODO: support cascaded switches |
| 364 | */ |
| 365 | static int dsa_post_bind(struct udevice *dev) |
| 366 | { |
| 367 | struct dsa_pdata *pdata = dev_get_uclass_plat(dev); |
| 368 | ofnode node = dev_ofnode(dev), pnode; |
| 369 | int i, err, first_err = 0; |
| 370 | |
Michael Walle | 108157c | 2021-02-24 17:40:41 +0100 | [diff] [blame] | 371 | if (!ofnode_valid(node)) |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 372 | return -ENODEV; |
| 373 | |
Tim Harvey | 43c2a00 | 2022-11-30 09:42:46 -0800 | [diff] [blame^] | 374 | err = dsa_sanitize_ops(dev); |
| 375 | if (err) |
| 376 | return err; |
| 377 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 378 | pdata->master_node = ofnode_null(); |
| 379 | |
| 380 | node = ofnode_find_subnode(node, "ports"); |
| 381 | if (!ofnode_valid(node)) |
| 382 | node = ofnode_find_subnode(node, "ethernet-ports"); |
| 383 | if (!ofnode_valid(node)) { |
| 384 | dev_err(dev, "ports node is missing under DSA device!\n"); |
| 385 | return -EINVAL; |
| 386 | } |
| 387 | |
| 388 | pdata->num_ports = ofnode_get_child_count(node); |
| 389 | if (pdata->num_ports <= 0 || pdata->num_ports > DSA_MAX_PORTS) { |
| 390 | dev_err(dev, "invalid number of ports (%d)\n", |
| 391 | pdata->num_ports); |
| 392 | return -EINVAL; |
| 393 | } |
| 394 | |
| 395 | /* look for the CPU port */ |
| 396 | ofnode_for_each_subnode(pnode, node) { |
| 397 | u32 ethernet; |
| 398 | |
| 399 | if (ofnode_read_u32(pnode, "ethernet", ðernet)) |
| 400 | continue; |
| 401 | |
| 402 | pdata->master_node = ofnode_get_by_phandle(ethernet); |
| 403 | pdata->cpu_port_node = pnode; |
| 404 | break; |
| 405 | } |
| 406 | |
| 407 | if (!ofnode_valid(pdata->master_node)) { |
| 408 | dev_err(dev, "master eth node missing!\n"); |
| 409 | return -EINVAL; |
| 410 | } |
| 411 | |
| 412 | if (ofnode_read_u32(pnode, "reg", &pdata->cpu_port)) { |
| 413 | dev_err(dev, "CPU port node not valid!\n"); |
| 414 | return -EINVAL; |
| 415 | } |
| 416 | |
| 417 | dev_dbg(dev, "master node %s on port %d\n", |
| 418 | ofnode_get_name(pdata->master_node), pdata->cpu_port); |
| 419 | |
| 420 | for (i = 0; i < pdata->num_ports; i++) { |
| 421 | char name[DSA_PORT_NAME_LENGTH]; |
| 422 | struct udevice *pdev; |
| 423 | |
| 424 | /* |
| 425 | * If this is the CPU port don't register it as an ETH device, |
| 426 | * we skip it on purpose since I/O to/from it from the CPU |
| 427 | * isn't useful. |
| 428 | */ |
| 429 | if (i == pdata->cpu_port) |
| 430 | continue; |
| 431 | |
| 432 | /* |
| 433 | * Set up default port names. If present, DT port labels |
| 434 | * will override the default port names. |
| 435 | */ |
| 436 | snprintf(name, DSA_PORT_NAME_LENGTH, "%s@%d", dev->name, i); |
| 437 | |
| 438 | ofnode_for_each_subnode(pnode, node) { |
| 439 | u32 reg; |
| 440 | |
| 441 | if (ofnode_read_u32(pnode, "reg", ®)) |
| 442 | continue; |
| 443 | |
| 444 | if (reg == i) |
| 445 | break; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * skip registration if port id not found or if the port |
| 450 | * is explicitly disabled in DT |
| 451 | */ |
Simon Glass | 8909066 | 2022-09-06 20:27:17 -0600 | [diff] [blame] | 452 | if (!ofnode_valid(pnode) || !ofnode_is_enabled(pnode)) |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 453 | continue; |
| 454 | |
| 455 | err = device_bind_driver_to_node(dev, DSA_PORT_CHILD_DRV_NAME, |
| 456 | name, pnode, &pdev); |
| 457 | if (pdev) { |
| 458 | struct dsa_port_pdata *port_pdata; |
| 459 | |
| 460 | port_pdata = dev_get_parent_plat(pdev); |
Vladimir Oltean | 4fdc7e3 | 2021-09-27 14:22:03 +0300 | [diff] [blame] | 461 | strlcpy(port_pdata->name, name, DSA_PORT_NAME_LENGTH); |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 462 | pdev->name = port_pdata->name; |
| 463 | } |
| 464 | |
| 465 | /* try to bind all ports but keep 1st error */ |
| 466 | if (err && !first_err) |
| 467 | first_err = err; |
| 468 | } |
| 469 | |
| 470 | if (first_err) |
| 471 | return first_err; |
| 472 | |
| 473 | dev_dbg(dev, "DSA ports successfully bound\n"); |
| 474 | |
| 475 | return 0; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Initialize the uclass per device internal state structure (priv). |
| 480 | * TODO: pick up references to other switch devices here, if we're cascaded. |
| 481 | */ |
| 482 | static int dsa_pre_probe(struct udevice *dev) |
| 483 | { |
| 484 | struct dsa_pdata *pdata = dev_get_uclass_plat(dev); |
| 485 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
Vladimir Oltean | 0fa4448 | 2021-12-05 01:00:34 +0200 | [diff] [blame] | 486 | int err; |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 487 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 488 | priv->num_ports = pdata->num_ports; |
| 489 | priv->cpu_port = pdata->cpu_port; |
| 490 | priv->cpu_port_fixed_phy = fixed_phy_create(pdata->cpu_port_node); |
| 491 | if (!priv->cpu_port_fixed_phy) { |
| 492 | dev_err(dev, "Failed to register fixed-link for CPU port\n"); |
| 493 | return -ENODEV; |
| 494 | } |
| 495 | |
Sean Anderson | 2a5af40 | 2022-05-05 13:11:36 -0400 | [diff] [blame] | 496 | err = uclass_get_device_by_ofnode(UCLASS_ETH, pdata->master_node, |
| 497 | &priv->master_dev); |
| 498 | if (err) |
| 499 | return err; |
Vladimir Oltean | 0fa4448 | 2021-12-05 01:00:34 +0200 | [diff] [blame] | 500 | |
Tim Harvey | c5868fc | 2022-11-30 09:42:45 -0800 | [diff] [blame] | 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static int dsa_post_probe(struct udevice *dev) |
| 505 | { |
| 506 | struct dsa_priv *priv = dev_get_uclass_priv(dev); |
| 507 | struct dsa_ops *ops = dsa_get_ops(dev); |
| 508 | int err; |
| 509 | |
Vladimir Oltean | 0fa4448 | 2021-12-05 01:00:34 +0200 | [diff] [blame] | 510 | /* Simulate a probing event for the CPU port */ |
| 511 | if (ops->port_probe) { |
| 512 | err = ops->port_probe(dev, priv->cpu_port, |
| 513 | priv->cpu_port_fixed_phy); |
| 514 | if (err) |
| 515 | return err; |
| 516 | } |
| 517 | |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | UCLASS_DRIVER(dsa) = { |
| 522 | .id = UCLASS_DSA, |
| 523 | .name = "dsa", |
| 524 | .post_bind = dsa_post_bind, |
| 525 | .pre_probe = dsa_pre_probe, |
Tim Harvey | c5868fc | 2022-11-30 09:42:45 -0800 | [diff] [blame] | 526 | .post_probe = dsa_post_probe, |
Claudiu Manoil | fc054d5 | 2021-01-25 14:23:53 +0200 | [diff] [blame] | 527 | .per_device_auto = sizeof(struct dsa_priv), |
| 528 | .per_device_plat_auto = sizeof(struct dsa_pdata), |
| 529 | .per_child_plat_auto = sizeof(struct dsa_port_pdata), |
| 530 | .flags = DM_UC_FLAG_SEQ_ALIAS, |
| 531 | }; |