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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later /* * Copyright 2008 - 2015 Freescale Semiconductor Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/init.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/of_net.h> #include <linux/of_mdio.h> #include <linux/device.h> #include <linux/phy.h> #include <linux/netdevice.h> #include <linux/phy_fixed.h> #include <linux/phylink.h> #include <linux/etherdevice.h> #include <linux/libfdt_env.h> #include <linux/platform_device.h> #include "mac.h" #include "fman_mac.h" #include "fman_dtsec.h" #include "fman_tgec.h" #include "fman_memac.h" MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("FSL FMan MAC API based driver"); struct mac_priv_s { u8 cell_index; struct fman *fman; /* List of multicast addresses */ struct list_head mc_addr_list; struct platform_device *eth_dev; u16 speed; }; struct mac_address { u8 addr[ETH_ALEN]; struct list_head list; }; static void mac_exception(struct mac_device *mac_dev, enum fman_mac_exceptions ex) { if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) { /* don't flag RX FIFO after the first */ mac_dev->set_exception(mac_dev->fman_mac, FM_MAC_EX_10G_RX_FIFO_OVFL, false); dev_err(mac_dev->dev, "10G MAC got RX FIFO Error = %x\n", ex); } dev_dbg(mac_dev->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c", __func__, ex); } int fman_set_multi(struct net_device *net_dev, struct mac_device *mac_dev) { struct mac_priv_s *priv; struct mac_address *old_addr, *tmp; struct netdev_hw_addr *ha; int err; enet_addr_t *addr; priv = mac_dev->priv; /* Clear previous address list */ list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) { addr = (enet_addr_t *)old_addr->addr; err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr); if (err < 0) return err; list_del(&old_addr->list); kfree(old_addr); } /* Add all the addresses from the new list */ netdev_for_each_mc_addr(ha, net_dev) { addr = (enet_addr_t *)ha->addr; err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr); if (err < 0) return err; tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC); if (!tmp) return -ENOMEM; ether_addr_copy(tmp->addr, ha->addr); list_add(&tmp->list, &priv->mc_addr_list); } return 0; } static DEFINE_MUTEX(eth_lock); static struct platform_device *dpaa_eth_add_device(int fman_id, struct mac_device *mac_dev) { struct platform_device *pdev; struct dpaa_eth_data data; struct mac_priv_s *priv; static int dpaa_eth_dev_cnt; int ret; priv = mac_dev->priv; data.mac_dev = mac_dev; data.mac_hw_id = priv->cell_index; data.fman_hw_id = fman_id; mutex_lock(ð_lock); pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt); if (!pdev) { ret = -ENOMEM; goto no_mem; } pdev->dev.parent = mac_dev->dev; ret = platform_device_add_data(pdev, &data, sizeof(data)); if (ret) goto err; ret = platform_device_add(pdev); if (ret) goto err; dpaa_eth_dev_cnt++; mutex_unlock(ð_lock); return pdev; err: platform_device_put(pdev); no_mem: mutex_unlock(ð_lock); return ERR_PTR(ret); } static const struct of_device_id mac_match[] = { { .compatible = "fsl,fman-dtsec", .data = dtsec_initialization }, { .compatible = "fsl,fman-xgec", .data = tgec_initialization }, { .compatible = "fsl,fman-memac", .data = memac_initialization }, {} }; MODULE_DEVICE_TABLE(of, mac_match); static int mac_probe(struct platform_device *_of_dev) { int err, i, nph; int (*init)(struct mac_device *mac_dev, struct device_node *mac_node, struct fman_mac_params *params); struct device *dev; struct device_node *mac_node, *dev_node; struct mac_device *mac_dev; struct platform_device *of_dev; struct mac_priv_s *priv; struct fman_mac_params params; u32 val; u8 fman_id; phy_interface_t phy_if; dev = &_of_dev->dev; mac_node = dev->of_node; init = of_device_get_match_data(dev); mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL); if (!mac_dev) return -ENOMEM; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; platform_set_drvdata(_of_dev, mac_dev); /* Save private information */ mac_dev->priv = priv; mac_dev->dev = dev; INIT_LIST_HEAD(&priv->mc_addr_list); /* Get the FM node */ dev_node = of_get_parent(mac_node); if (!dev_node) { dev_err(dev, "of_get_parent(%pOF) failed\n", mac_node); return -EINVAL; } of_dev = of_find_device_by_node(dev_node); if (!of_dev) { dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node); err = -EINVAL; goto _return_of_node_put; } /* Get the FMan cell-index */ err = of_property_read_u32(dev_node, "cell-index", &val); if (err) { dev_err(dev, "failed to read cell-index for %pOF\n", dev_node); err = -EINVAL; goto _return_of_node_put; } /* cell-index 0 => FMan id 1 */ fman_id = (u8)(val + 1); priv->fman = fman_bind(&of_dev->dev); if (!priv->fman) { dev_err(dev, "fman_bind(%pOF) failed\n", dev_node); err = -ENODEV; goto _return_of_node_put; } of_node_put(dev_node); /* Get the address of the memory mapped registers */ mac_dev->res = platform_get_mem_or_io(_of_dev, 0); if (!mac_dev->res) { dev_err(dev, "could not get registers\n"); return -EINVAL; } err = devm_request_resource(dev, fman_get_mem_region(priv->fman), mac_dev->res); if (err) { dev_err_probe(dev, err, "could not request resource\n"); return err; } mac_dev->vaddr = devm_ioremap(dev, mac_dev->res->start, resource_size(mac_dev->res)); if (!mac_dev->vaddr) { dev_err(dev, "devm_ioremap() failed\n"); return -EIO; } if (!of_device_is_available(mac_node)) return -ENODEV; /* Get the cell-index */ err = of_property_read_u32(mac_node, "cell-index", &val); if (err) { dev_err(dev, "failed to read cell-index for %pOF\n", mac_node); return -EINVAL; } priv->cell_index = (u8)val; /* Get the MAC address */ err = of_get_mac_address(mac_node, mac_dev->addr); if (err) dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node); /* Get the port handles */ nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); if (unlikely(nph < 0)) { dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n", mac_node); return nph; } if (nph != ARRAY_SIZE(mac_dev->port)) { dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n", mac_node); return -EINVAL; } for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { /* Find the port node */ dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i); if (!dev_node) { dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n", mac_node); return -EINVAL; } of_dev = of_find_device_by_node(dev_node); if (!of_dev) { dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node); err = -EINVAL; goto _return_of_node_put; } mac_dev->port[i] = fman_port_bind(&of_dev->dev); if (!mac_dev->port[i]) { dev_err(dev, "dev_get_drvdata(%pOF) failed\n", dev_node); err = -EINVAL; goto _return_of_node_put; } of_node_put(dev_node); } /* Get the PHY connection type */ err = of_get_phy_mode(mac_node, &phy_if); if (err) { dev_warn(dev, "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n", mac_node); phy_if = PHY_INTERFACE_MODE_SGMII; } mac_dev->phy_if = phy_if; params.mac_id = priv->cell_index; params.fm = (void *)priv->fman; params.exception_cb = mac_exception; params.event_cb = mac_exception; err = init(mac_dev, mac_node, ¶ms); if (err < 0) return err; if (!is_zero_ether_addr(mac_dev->addr)) dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr); priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev); if (IS_ERR(priv->eth_dev)) { err = PTR_ERR(priv->eth_dev); dev_err(dev, "failed to add Ethernet platform device for MAC %d\n", priv->cell_index); priv->eth_dev = NULL; } return err; _return_of_node_put: of_node_put(dev_node); return err; } static void mac_remove(struct platform_device *pdev) { struct mac_device *mac_dev = platform_get_drvdata(pdev); platform_device_unregister(mac_dev->priv->eth_dev); } static struct platform_driver mac_driver = { .driver = { .name = KBUILD_MODNAME, .of_match_table = mac_match, }, .probe = mac_probe, .remove_new = mac_remove, }; builtin_platform_driver(mac_driver); |