1 // SPDX-License-Identifier: GPL-2.0 2 /** 3 * sni_ave.c - Socionext UniPhier AVE ethernet driver 4 * Copyright 2014 Panasonic Corporation 5 * Copyright 2015-2017 Socionext Inc. 6 */ 7 8 #include <linux/bitops.h> 9 #include <linux/clk.h> 10 #include <linux/etherdevice.h> 11 #include <linux/interrupt.h> 12 #include <linux/io.h> 13 #include <linux/iopoll.h> 14 #include <linux/mfd/syscon.h> 15 #include <linux/mii.h> 16 #include <linux/module.h> 17 #include <linux/netdevice.h> 18 #include <linux/of_net.h> 19 #include <linux/of_mdio.h> 20 #include <linux/of_platform.h> 21 #include <linux/phy.h> 22 #include <linux/regmap.h> 23 #include <linux/reset.h> 24 #include <linux/types.h> 25 #include <linux/u64_stats_sync.h> 26 27 /* General Register Group */ 28 #define AVE_IDR 0x000 /* ID */ 29 #define AVE_VR 0x004 /* Version */ 30 #define AVE_GRR 0x008 /* Global Reset */ 31 #define AVE_CFGR 0x00c /* Configuration */ 32 33 /* Interrupt Register Group */ 34 #define AVE_GIMR 0x100 /* Global Interrupt Mask */ 35 #define AVE_GISR 0x104 /* Global Interrupt Status */ 36 37 /* MAC Register Group */ 38 #define AVE_TXCR 0x200 /* TX Setup */ 39 #define AVE_RXCR 0x204 /* RX Setup */ 40 #define AVE_RXMAC1R 0x208 /* MAC address (lower) */ 41 #define AVE_RXMAC2R 0x20c /* MAC address (upper) */ 42 #define AVE_MDIOCTR 0x214 /* MDIO Control */ 43 #define AVE_MDIOAR 0x218 /* MDIO Address */ 44 #define AVE_MDIOWDR 0x21c /* MDIO Data */ 45 #define AVE_MDIOSR 0x220 /* MDIO Status */ 46 #define AVE_MDIORDR 0x224 /* MDIO Rd Data */ 47 48 /* Descriptor Control Register Group */ 49 #define AVE_DESCC 0x300 /* Descriptor Control */ 50 #define AVE_TXDC 0x304 /* TX Descriptor Configuration */ 51 #define AVE_RXDC0 0x308 /* RX Descriptor Ring0 Configuration */ 52 #define AVE_IIRQC 0x34c /* Interval IRQ Control */ 53 54 /* Packet Filter Register Group */ 55 #define AVE_PKTF_BASE 0x800 /* PF Base Address */ 56 #define AVE_PFMBYTE_BASE 0xd00 /* PF Mask Byte Base Address */ 57 #define AVE_PFMBIT_BASE 0xe00 /* PF Mask Bit Base Address */ 58 #define AVE_PFSEL_BASE 0xf00 /* PF Selector Base Address */ 59 #define AVE_PFEN 0xffc /* Packet Filter Enable */ 60 #define AVE_PKTF(ent) (AVE_PKTF_BASE + (ent) * 0x40) 61 #define AVE_PFMBYTE(ent) (AVE_PFMBYTE_BASE + (ent) * 8) 62 #define AVE_PFMBIT(ent) (AVE_PFMBIT_BASE + (ent) * 4) 63 #define AVE_PFSEL(ent) (AVE_PFSEL_BASE + (ent) * 4) 64 65 /* 64bit descriptor memory */ 66 #define AVE_DESC_SIZE_64 12 /* Descriptor Size */ 67 68 #define AVE_TXDM_64 0x1000 /* Tx Descriptor Memory */ 69 #define AVE_RXDM_64 0x1c00 /* Rx Descriptor Memory */ 70 71 #define AVE_TXDM_SIZE_64 0x0ba0 /* Tx Descriptor Memory Size 3KB */ 72 #define AVE_RXDM_SIZE_64 0x6000 /* Rx Descriptor Memory Size 24KB */ 73 74 /* 32bit descriptor memory */ 75 #define AVE_DESC_SIZE_32 8 /* Descriptor Size */ 76 77 #define AVE_TXDM_32 0x1000 /* Tx Descriptor Memory */ 78 #define AVE_RXDM_32 0x1800 /* Rx Descriptor Memory */ 79 80 #define AVE_TXDM_SIZE_32 0x07c0 /* Tx Descriptor Memory Size 2KB */ 81 #define AVE_RXDM_SIZE_32 0x4000 /* Rx Descriptor Memory Size 16KB */ 82 83 /* RMII Bridge Register Group */ 84 #define AVE_RSTCTRL 0x8028 /* Reset control */ 85 #define AVE_RSTCTRL_RMIIRST BIT(16) 86 #define AVE_LINKSEL 0x8034 /* Link speed setting */ 87 #define AVE_LINKSEL_100M BIT(0) 88 89 /* AVE_GRR */ 90 #define AVE_GRR_RXFFR BIT(5) /* Reset RxFIFO */ 91 #define AVE_GRR_PHYRST BIT(4) /* Reset external PHY */ 92 #define AVE_GRR_GRST BIT(0) /* Reset all MAC */ 93 94 /* AVE_CFGR */ 95 #define AVE_CFGR_FLE BIT(31) /* Filter Function */ 96 #define AVE_CFGR_CHE BIT(30) /* Checksum Function */ 97 #define AVE_CFGR_MII BIT(27) /* Func mode (1:MII/RMII, 0:RGMII) */ 98 #define AVE_CFGR_IPFCEN BIT(24) /* IP fragment sum Enable */ 99 100 /* AVE_GISR (common with GIMR) */ 101 #define AVE_GI_PHY BIT(24) /* PHY interrupt */ 102 #define AVE_GI_TX BIT(16) /* Tx complete */ 103 #define AVE_GI_RXERR BIT(8) /* Receive frame more than max size */ 104 #define AVE_GI_RXOVF BIT(7) /* Overflow at the RxFIFO */ 105 #define AVE_GI_RXDROP BIT(6) /* Drop packet */ 106 #define AVE_GI_RXIINT BIT(5) /* Interval interrupt */ 107 108 /* AVE_TXCR */ 109 #define AVE_TXCR_FLOCTR BIT(18) /* Flow control */ 110 #define AVE_TXCR_TXSPD_1G BIT(17) 111 #define AVE_TXCR_TXSPD_100 BIT(16) 112 113 /* AVE_RXCR */ 114 #define AVE_RXCR_RXEN BIT(30) /* Rx enable */ 115 #define AVE_RXCR_FDUPEN BIT(22) /* Interface mode */ 116 #define AVE_RXCR_FLOCTR BIT(21) /* Flow control */ 117 #define AVE_RXCR_AFEN BIT(19) /* MAC address filter */ 118 #define AVE_RXCR_DRPEN BIT(18) /* Drop pause frame */ 119 #define AVE_RXCR_MPSIZ_MASK GENMASK(10, 0) 120 121 /* AVE_MDIOCTR */ 122 #define AVE_MDIOCTR_RREQ BIT(3) /* Read request */ 123 #define AVE_MDIOCTR_WREQ BIT(2) /* Write request */ 124 125 /* AVE_MDIOSR */ 126 #define AVE_MDIOSR_STS BIT(0) /* access status */ 127 128 /* AVE_DESCC */ 129 #define AVE_DESCC_STATUS_MASK GENMASK(31, 16) 130 #define AVE_DESCC_RD0 BIT(8) /* Enable Rx descriptor Ring0 */ 131 #define AVE_DESCC_RDSTP BIT(4) /* Pause Rx descriptor */ 132 #define AVE_DESCC_TD BIT(0) /* Enable Tx descriptor */ 133 134 /* AVE_TXDC */ 135 #define AVE_TXDC_SIZE GENMASK(27, 16) /* Size of Tx descriptor */ 136 #define AVE_TXDC_ADDR GENMASK(11, 0) /* Start address */ 137 #define AVE_TXDC_ADDR_START 0 138 139 /* AVE_RXDC0 */ 140 #define AVE_RXDC0_SIZE GENMASK(30, 16) /* Size of Rx descriptor */ 141 #define AVE_RXDC0_ADDR GENMASK(14, 0) /* Start address */ 142 #define AVE_RXDC0_ADDR_START 0 143 144 /* AVE_IIRQC */ 145 #define AVE_IIRQC_EN0 BIT(27) /* Enable interval interrupt Ring0 */ 146 #define AVE_IIRQC_BSCK GENMASK(15, 0) /* Interval count unit */ 147 148 /* Command status for descriptor */ 149 #define AVE_STS_OWN BIT(31) /* Descriptor ownership */ 150 #define AVE_STS_INTR BIT(29) /* Request for interrupt */ 151 #define AVE_STS_OK BIT(27) /* Normal transmit */ 152 /* TX */ 153 #define AVE_STS_NOCSUM BIT(28) /* No use HW checksum */ 154 #define AVE_STS_1ST BIT(26) /* Head of buffer chain */ 155 #define AVE_STS_LAST BIT(25) /* Tail of buffer chain */ 156 #define AVE_STS_OWC BIT(21) /* Out of window,Late Collision */ 157 #define AVE_STS_EC BIT(20) /* Excess collision occurred */ 158 #define AVE_STS_PKTLEN_TX_MASK GENMASK(15, 0) 159 /* RX */ 160 #define AVE_STS_CSSV BIT(21) /* Checksum check performed */ 161 #define AVE_STS_CSER BIT(20) /* Checksum error detected */ 162 #define AVE_STS_PKTLEN_RX_MASK GENMASK(10, 0) 163 164 /* Packet filter */ 165 #define AVE_PFMBYTE_MASK0 (GENMASK(31, 8) | GENMASK(5, 0)) 166 #define AVE_PFMBYTE_MASK1 GENMASK(25, 0) 167 #define AVE_PFMBIT_MASK GENMASK(15, 0) 168 169 #define AVE_PF_SIZE 17 /* Number of all packet filter */ 170 #define AVE_PF_MULTICAST_SIZE 7 /* Number of multicast filter */ 171 172 #define AVE_PFNUM_FILTER 0 /* No.0 */ 173 #define AVE_PFNUM_UNICAST 1 /* No.1 */ 174 #define AVE_PFNUM_BROADCAST 2 /* No.2 */ 175 #define AVE_PFNUM_MULTICAST 11 /* No.11-17 */ 176 177 /* NETIF Message control */ 178 #define AVE_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ 179 NETIF_MSG_PROBE | \ 180 NETIF_MSG_LINK | \ 181 NETIF_MSG_TIMER | \ 182 NETIF_MSG_IFDOWN | \ 183 NETIF_MSG_IFUP | \ 184 NETIF_MSG_RX_ERR | \ 185 NETIF_MSG_TX_ERR) 186 187 /* Parameter for descriptor */ 188 #define AVE_NR_TXDESC 32 /* Tx descriptor */ 189 #define AVE_NR_RXDESC 64 /* Rx descriptor */ 190 191 #define AVE_DESC_OFS_CMDSTS 0 192 #define AVE_DESC_OFS_ADDRL 4 193 #define AVE_DESC_OFS_ADDRU 8 194 195 /* Parameter for ethernet frame */ 196 #define AVE_MAX_ETHFRAME 1518 197 198 /* Parameter for interrupt */ 199 #define AVE_INTM_COUNT 20 200 #define AVE_FORCE_TXINTCNT 1 201 202 /* SG */ 203 #define SG_ETPINMODE 0x540 204 #define SG_ETPINMODE_EXTPHY BIT(1) /* for LD11 */ 205 #define SG_ETPINMODE_RMII(ins) BIT(ins) 206 207 #define IS_DESC_64BIT(p) ((p)->data->is_desc_64bit) 208 209 #define AVE_MAX_CLKS 4 210 #define AVE_MAX_RSTS 2 211 212 enum desc_id { 213 AVE_DESCID_RX, 214 AVE_DESCID_TX, 215 }; 216 217 enum desc_state { 218 AVE_DESC_RX_PERMIT, 219 AVE_DESC_RX_SUSPEND, 220 AVE_DESC_START, 221 AVE_DESC_STOP, 222 }; 223 224 struct ave_desc { 225 struct sk_buff *skbs; 226 dma_addr_t skbs_dma; 227 size_t skbs_dmalen; 228 }; 229 230 struct ave_desc_info { 231 u32 ndesc; /* number of descriptor */ 232 u32 daddr; /* start address of descriptor */ 233 u32 proc_idx; /* index of processing packet */ 234 u32 done_idx; /* index of processed packet */ 235 struct ave_desc *desc; /* skb info related descriptor */ 236 }; 237 238 struct ave_stats { 239 struct u64_stats_sync syncp; 240 u64 packets; 241 u64 bytes; 242 u64 errors; 243 u64 dropped; 244 u64 collisions; 245 u64 fifo_errors; 246 }; 247 248 struct ave_private { 249 void __iomem *base; 250 int irq; 251 int phy_id; 252 unsigned int desc_size; 253 u32 msg_enable; 254 int nclks; 255 struct clk *clk[AVE_MAX_CLKS]; 256 int nrsts; 257 struct reset_control *rst[AVE_MAX_RSTS]; 258 phy_interface_t phy_mode; 259 struct phy_device *phydev; 260 struct mii_bus *mdio; 261 struct regmap *regmap; 262 unsigned int pinmode_mask; 263 unsigned int pinmode_val; 264 265 /* stats */ 266 struct ave_stats stats_rx; 267 struct ave_stats stats_tx; 268 269 /* NAPI support */ 270 struct net_device *ndev; 271 struct napi_struct napi_rx; 272 struct napi_struct napi_tx; 273 274 /* descriptor */ 275 struct ave_desc_info rx; 276 struct ave_desc_info tx; 277 278 /* flow control */ 279 int pause_auto; 280 int pause_rx; 281 int pause_tx; 282 283 const struct ave_soc_data *data; 284 }; 285 286 struct ave_soc_data { 287 bool is_desc_64bit; 288 const char *clock_names[AVE_MAX_CLKS]; 289 const char *reset_names[AVE_MAX_RSTS]; 290 int (*get_pinmode)(struct ave_private *priv, 291 phy_interface_t phy_mode, u32 arg); 292 }; 293 294 static u32 ave_desc_read(struct net_device *ndev, enum desc_id id, int entry, 295 int offset) 296 { 297 struct ave_private *priv = netdev_priv(ndev); 298 u32 addr; 299 300 addr = ((id == AVE_DESCID_TX) ? priv->tx.daddr : priv->rx.daddr) 301 + entry * priv->desc_size + offset; 302 303 return readl(priv->base + addr); 304 } 305 306 static u32 ave_desc_read_cmdsts(struct net_device *ndev, enum desc_id id, 307 int entry) 308 { 309 return ave_desc_read(ndev, id, entry, AVE_DESC_OFS_CMDSTS); 310 } 311 312 static void ave_desc_write(struct net_device *ndev, enum desc_id id, 313 int entry, int offset, u32 val) 314 { 315 struct ave_private *priv = netdev_priv(ndev); 316 u32 addr; 317 318 addr = ((id == AVE_DESCID_TX) ? priv->tx.daddr : priv->rx.daddr) 319 + entry * priv->desc_size + offset; 320 321 writel(val, priv->base + addr); 322 } 323 324 static void ave_desc_write_cmdsts(struct net_device *ndev, enum desc_id id, 325 int entry, u32 val) 326 { 327 ave_desc_write(ndev, id, entry, AVE_DESC_OFS_CMDSTS, val); 328 } 329 330 static void ave_desc_write_addr(struct net_device *ndev, enum desc_id id, 331 int entry, dma_addr_t paddr) 332 { 333 struct ave_private *priv = netdev_priv(ndev); 334 335 ave_desc_write(ndev, id, entry, AVE_DESC_OFS_ADDRL, 336 lower_32_bits(paddr)); 337 if (IS_DESC_64BIT(priv)) 338 ave_desc_write(ndev, id, 339 entry, AVE_DESC_OFS_ADDRU, 340 upper_32_bits(paddr)); 341 } 342 343 static u32 ave_irq_disable_all(struct net_device *ndev) 344 { 345 struct ave_private *priv = netdev_priv(ndev); 346 u32 ret; 347 348 ret = readl(priv->base + AVE_GIMR); 349 writel(0, priv->base + AVE_GIMR); 350 351 return ret; 352 } 353 354 static void ave_irq_restore(struct net_device *ndev, u32 val) 355 { 356 struct ave_private *priv = netdev_priv(ndev); 357 358 writel(val, priv->base + AVE_GIMR); 359 } 360 361 static void ave_irq_enable(struct net_device *ndev, u32 bitflag) 362 { 363 struct ave_private *priv = netdev_priv(ndev); 364 365 writel(readl(priv->base + AVE_GIMR) | bitflag, priv->base + AVE_GIMR); 366 writel(bitflag, priv->base + AVE_GISR); 367 } 368 369 static void ave_hw_write_macaddr(struct net_device *ndev, 370 const unsigned char *mac_addr, 371 int reg1, int reg2) 372 { 373 struct ave_private *priv = netdev_priv(ndev); 374 375 writel(mac_addr[0] | mac_addr[1] << 8 | 376 mac_addr[2] << 16 | mac_addr[3] << 24, priv->base + reg1); 377 writel(mac_addr[4] | mac_addr[5] << 8, priv->base + reg2); 378 } 379 380 static void ave_hw_read_version(struct net_device *ndev, char *buf, int len) 381 { 382 struct ave_private *priv = netdev_priv(ndev); 383 u32 major, minor, vr; 384 385 vr = readl(priv->base + AVE_VR); 386 major = (vr & GENMASK(15, 8)) >> 8; 387 minor = (vr & GENMASK(7, 0)); 388 snprintf(buf, len, "v%u.%u", major, minor); 389 } 390 391 static void ave_ethtool_get_drvinfo(struct net_device *ndev, 392 struct ethtool_drvinfo *info) 393 { 394 struct device *dev = ndev->dev.parent; 395 396 strlcpy(info->driver, dev->driver->name, sizeof(info->driver)); 397 strlcpy(info->bus_info, dev_name(dev), sizeof(info->bus_info)); 398 ave_hw_read_version(ndev, info->fw_version, sizeof(info->fw_version)); 399 } 400 401 static u32 ave_ethtool_get_msglevel(struct net_device *ndev) 402 { 403 struct ave_private *priv = netdev_priv(ndev); 404 405 return priv->msg_enable; 406 } 407 408 static void ave_ethtool_set_msglevel(struct net_device *ndev, u32 val) 409 { 410 struct ave_private *priv = netdev_priv(ndev); 411 412 priv->msg_enable = val; 413 } 414 415 static void ave_ethtool_get_wol(struct net_device *ndev, 416 struct ethtool_wolinfo *wol) 417 { 418 wol->supported = 0; 419 wol->wolopts = 0; 420 421 if (ndev->phydev) 422 phy_ethtool_get_wol(ndev->phydev, wol); 423 } 424 425 static int ave_ethtool_set_wol(struct net_device *ndev, 426 struct ethtool_wolinfo *wol) 427 { 428 int ret; 429 430 if (!ndev->phydev || 431 (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE))) 432 return -EOPNOTSUPP; 433 434 ret = phy_ethtool_set_wol(ndev->phydev, wol); 435 if (!ret) 436 device_set_wakeup_enable(&ndev->dev, !!wol->wolopts); 437 438 return ret; 439 } 440 441 static void ave_ethtool_get_pauseparam(struct net_device *ndev, 442 struct ethtool_pauseparam *pause) 443 { 444 struct ave_private *priv = netdev_priv(ndev); 445 446 pause->autoneg = priv->pause_auto; 447 pause->rx_pause = priv->pause_rx; 448 pause->tx_pause = priv->pause_tx; 449 } 450 451 static int ave_ethtool_set_pauseparam(struct net_device *ndev, 452 struct ethtool_pauseparam *pause) 453 { 454 struct ave_private *priv = netdev_priv(ndev); 455 struct phy_device *phydev = ndev->phydev; 456 457 if (!phydev) 458 return -EINVAL; 459 460 priv->pause_auto = pause->autoneg; 461 priv->pause_rx = pause->rx_pause; 462 priv->pause_tx = pause->tx_pause; 463 464 phy_set_asym_pause(phydev, pause->rx_pause, pause->tx_pause); 465 466 return 0; 467 } 468 469 static const struct ethtool_ops ave_ethtool_ops = { 470 .get_link_ksettings = phy_ethtool_get_link_ksettings, 471 .set_link_ksettings = phy_ethtool_set_link_ksettings, 472 .get_drvinfo = ave_ethtool_get_drvinfo, 473 .nway_reset = phy_ethtool_nway_reset, 474 .get_link = ethtool_op_get_link, 475 .get_msglevel = ave_ethtool_get_msglevel, 476 .set_msglevel = ave_ethtool_set_msglevel, 477 .get_wol = ave_ethtool_get_wol, 478 .set_wol = ave_ethtool_set_wol, 479 .get_pauseparam = ave_ethtool_get_pauseparam, 480 .set_pauseparam = ave_ethtool_set_pauseparam, 481 }; 482 483 static int ave_mdiobus_read(struct mii_bus *bus, int phyid, int regnum) 484 { 485 struct net_device *ndev = bus->priv; 486 struct ave_private *priv; 487 u32 mdioctl, mdiosr; 488 int ret; 489 490 priv = netdev_priv(ndev); 491 492 /* write address */ 493 writel((phyid << 8) | regnum, priv->base + AVE_MDIOAR); 494 495 /* read request */ 496 mdioctl = readl(priv->base + AVE_MDIOCTR); 497 writel((mdioctl | AVE_MDIOCTR_RREQ) & ~AVE_MDIOCTR_WREQ, 498 priv->base + AVE_MDIOCTR); 499 500 ret = readl_poll_timeout(priv->base + AVE_MDIOSR, mdiosr, 501 !(mdiosr & AVE_MDIOSR_STS), 20, 2000); 502 if (ret) { 503 netdev_err(ndev, "failed to read (phy:%d reg:%x)\n", 504 phyid, regnum); 505 return ret; 506 } 507 508 return readl(priv->base + AVE_MDIORDR) & GENMASK(15, 0); 509 } 510 511 static int ave_mdiobus_write(struct mii_bus *bus, int phyid, int regnum, 512 u16 val) 513 { 514 struct net_device *ndev = bus->priv; 515 struct ave_private *priv; 516 u32 mdioctl, mdiosr; 517 int ret; 518 519 priv = netdev_priv(ndev); 520 521 /* write address */ 522 writel((phyid << 8) | regnum, priv->base + AVE_MDIOAR); 523 524 /* write data */ 525 writel(val, priv->base + AVE_MDIOWDR); 526 527 /* write request */ 528 mdioctl = readl(priv->base + AVE_MDIOCTR); 529 writel((mdioctl | AVE_MDIOCTR_WREQ) & ~AVE_MDIOCTR_RREQ, 530 priv->base + AVE_MDIOCTR); 531 532 ret = readl_poll_timeout(priv->base + AVE_MDIOSR, mdiosr, 533 !(mdiosr & AVE_MDIOSR_STS), 20, 2000); 534 if (ret) 535 netdev_err(ndev, "failed to write (phy:%d reg:%x)\n", 536 phyid, regnum); 537 538 return ret; 539 } 540 541 static int ave_dma_map(struct net_device *ndev, struct ave_desc *desc, 542 void *ptr, size_t len, enum dma_data_direction dir, 543 dma_addr_t *paddr) 544 { 545 dma_addr_t map_addr; 546 547 map_addr = dma_map_single(ndev->dev.parent, ptr, len, dir); 548 if (unlikely(dma_mapping_error(ndev->dev.parent, map_addr))) 549 return -ENOMEM; 550 551 desc->skbs_dma = map_addr; 552 desc->skbs_dmalen = len; 553 *paddr = map_addr; 554 555 return 0; 556 } 557 558 static void ave_dma_unmap(struct net_device *ndev, struct ave_desc *desc, 559 enum dma_data_direction dir) 560 { 561 if (!desc->skbs_dma) 562 return; 563 564 dma_unmap_single(ndev->dev.parent, 565 desc->skbs_dma, desc->skbs_dmalen, dir); 566 desc->skbs_dma = 0; 567 } 568 569 /* Prepare Rx descriptor and memory */ 570 static int ave_rxdesc_prepare(struct net_device *ndev, int entry) 571 { 572 struct ave_private *priv = netdev_priv(ndev); 573 struct sk_buff *skb; 574 dma_addr_t paddr; 575 int ret; 576 577 skb = priv->rx.desc[entry].skbs; 578 if (!skb) { 579 skb = netdev_alloc_skb_ip_align(ndev, 580 AVE_MAX_ETHFRAME); 581 if (!skb) { 582 netdev_err(ndev, "can't allocate skb for Rx\n"); 583 return -ENOMEM; 584 } 585 } 586 587 /* set disable to cmdsts */ 588 ave_desc_write_cmdsts(ndev, AVE_DESCID_RX, entry, 589 AVE_STS_INTR | AVE_STS_OWN); 590 591 /* map Rx buffer 592 * Rx buffer set to the Rx descriptor has two restrictions: 593 * - Rx buffer address is 4 byte aligned. 594 * - Rx buffer begins with 2 byte headroom, and data will be put from 595 * (buffer + 2). 596 * To satisfy this, specify the address to put back the buffer 597 * pointer advanced by NET_IP_ALIGN by netdev_alloc_skb_ip_align(), 598 * and expand the map size by NET_IP_ALIGN. 599 */ 600 ret = ave_dma_map(ndev, &priv->rx.desc[entry], 601 skb->data - NET_IP_ALIGN, 602 AVE_MAX_ETHFRAME + NET_IP_ALIGN, 603 DMA_FROM_DEVICE, &paddr); 604 if (ret) { 605 netdev_err(ndev, "can't map skb for Rx\n"); 606 dev_kfree_skb_any(skb); 607 return ret; 608 } 609 priv->rx.desc[entry].skbs = skb; 610 611 /* set buffer pointer */ 612 ave_desc_write_addr(ndev, AVE_DESCID_RX, entry, paddr); 613 614 /* set enable to cmdsts */ 615 ave_desc_write_cmdsts(ndev, AVE_DESCID_RX, entry, 616 AVE_STS_INTR | AVE_MAX_ETHFRAME); 617 618 return ret; 619 } 620 621 /* Switch state of descriptor */ 622 static int ave_desc_switch(struct net_device *ndev, enum desc_state state) 623 { 624 struct ave_private *priv = netdev_priv(ndev); 625 int ret = 0; 626 u32 val; 627 628 switch (state) { 629 case AVE_DESC_START: 630 writel(AVE_DESCC_TD | AVE_DESCC_RD0, priv->base + AVE_DESCC); 631 break; 632 633 case AVE_DESC_STOP: 634 writel(0, priv->base + AVE_DESCC); 635 if (readl_poll_timeout(priv->base + AVE_DESCC, val, !val, 636 150, 15000)) { 637 netdev_err(ndev, "can't stop descriptor\n"); 638 ret = -EBUSY; 639 } 640 break; 641 642 case AVE_DESC_RX_SUSPEND: 643 val = readl(priv->base + AVE_DESCC); 644 val |= AVE_DESCC_RDSTP; 645 val &= ~AVE_DESCC_STATUS_MASK; 646 writel(val, priv->base + AVE_DESCC); 647 if (readl_poll_timeout(priv->base + AVE_DESCC, val, 648 val & (AVE_DESCC_RDSTP << 16), 649 150, 150000)) { 650 netdev_err(ndev, "can't suspend descriptor\n"); 651 ret = -EBUSY; 652 } 653 break; 654 655 case AVE_DESC_RX_PERMIT: 656 val = readl(priv->base + AVE_DESCC); 657 val &= ~AVE_DESCC_RDSTP; 658 val &= ~AVE_DESCC_STATUS_MASK; 659 writel(val, priv->base + AVE_DESCC); 660 break; 661 662 default: 663 ret = -EINVAL; 664 break; 665 } 666 667 return ret; 668 } 669 670 static int ave_tx_complete(struct net_device *ndev) 671 { 672 struct ave_private *priv = netdev_priv(ndev); 673 u32 proc_idx, done_idx, ndesc, cmdsts; 674 unsigned int nr_freebuf = 0; 675 unsigned int tx_packets = 0; 676 unsigned int tx_bytes = 0; 677 678 proc_idx = priv->tx.proc_idx; 679 done_idx = priv->tx.done_idx; 680 ndesc = priv->tx.ndesc; 681 682 /* free pre-stored skb from done_idx to proc_idx */ 683 while (proc_idx != done_idx) { 684 cmdsts = ave_desc_read_cmdsts(ndev, AVE_DESCID_TX, done_idx); 685 686 /* do nothing if owner is HW (==1 for Tx) */ 687 if (cmdsts & AVE_STS_OWN) 688 break; 689 690 /* check Tx status and updates statistics */ 691 if (cmdsts & AVE_STS_OK) { 692 tx_bytes += cmdsts & AVE_STS_PKTLEN_TX_MASK; 693 /* success */ 694 if (cmdsts & AVE_STS_LAST) 695 tx_packets++; 696 } else { 697 /* error */ 698 if (cmdsts & AVE_STS_LAST) { 699 priv->stats_tx.errors++; 700 if (cmdsts & (AVE_STS_OWC | AVE_STS_EC)) 701 priv->stats_tx.collisions++; 702 } 703 } 704 705 /* release skb */ 706 if (priv->tx.desc[done_idx].skbs) { 707 ave_dma_unmap(ndev, &priv->tx.desc[done_idx], 708 DMA_TO_DEVICE); 709 dev_consume_skb_any(priv->tx.desc[done_idx].skbs); 710 priv->tx.desc[done_idx].skbs = NULL; 711 nr_freebuf++; 712 } 713 done_idx = (done_idx + 1) % ndesc; 714 } 715 716 priv->tx.done_idx = done_idx; 717 718 /* update stats */ 719 u64_stats_update_begin(&priv->stats_tx.syncp); 720 priv->stats_tx.packets += tx_packets; 721 priv->stats_tx.bytes += tx_bytes; 722 u64_stats_update_end(&priv->stats_tx.syncp); 723 724 /* wake queue for freeing buffer */ 725 if (unlikely(netif_queue_stopped(ndev)) && nr_freebuf) 726 netif_wake_queue(ndev); 727 728 return nr_freebuf; 729 } 730 731 static int ave_rx_receive(struct net_device *ndev, int num) 732 { 733 struct ave_private *priv = netdev_priv(ndev); 734 unsigned int rx_packets = 0; 735 unsigned int rx_bytes = 0; 736 u32 proc_idx, done_idx; 737 struct sk_buff *skb; 738 unsigned int pktlen; 739 int restpkt, npkts; 740 u32 ndesc, cmdsts; 741 742 proc_idx = priv->rx.proc_idx; 743 done_idx = priv->rx.done_idx; 744 ndesc = priv->rx.ndesc; 745 restpkt = ((proc_idx + ndesc - 1) - done_idx) % ndesc; 746 747 for (npkts = 0; npkts < num; npkts++) { 748 /* we can't receive more packet, so fill desc quickly */ 749 if (--restpkt < 0) 750 break; 751 752 cmdsts = ave_desc_read_cmdsts(ndev, AVE_DESCID_RX, proc_idx); 753 754 /* do nothing if owner is HW (==0 for Rx) */ 755 if (!(cmdsts & AVE_STS_OWN)) 756 break; 757 758 if (!(cmdsts & AVE_STS_OK)) { 759 priv->stats_rx.errors++; 760 proc_idx = (proc_idx + 1) % ndesc; 761 continue; 762 } 763 764 pktlen = cmdsts & AVE_STS_PKTLEN_RX_MASK; 765 766 /* get skbuff for rx */ 767 skb = priv->rx.desc[proc_idx].skbs; 768 priv->rx.desc[proc_idx].skbs = NULL; 769 770 ave_dma_unmap(ndev, &priv->rx.desc[proc_idx], DMA_FROM_DEVICE); 771 772 skb->dev = ndev; 773 skb_put(skb, pktlen); 774 skb->protocol = eth_type_trans(skb, ndev); 775 776 if ((cmdsts & AVE_STS_CSSV) && (!(cmdsts & AVE_STS_CSER))) 777 skb->ip_summed = CHECKSUM_UNNECESSARY; 778 779 rx_packets++; 780 rx_bytes += pktlen; 781 782 netif_receive_skb(skb); 783 784 proc_idx = (proc_idx + 1) % ndesc; 785 } 786 787 priv->rx.proc_idx = proc_idx; 788 789 /* update stats */ 790 u64_stats_update_begin(&priv->stats_rx.syncp); 791 priv->stats_rx.packets += rx_packets; 792 priv->stats_rx.bytes += rx_bytes; 793 u64_stats_update_end(&priv->stats_rx.syncp); 794 795 /* refill the Rx buffers */ 796 while (proc_idx != done_idx) { 797 if (ave_rxdesc_prepare(ndev, done_idx)) 798 break; 799 done_idx = (done_idx + 1) % ndesc; 800 } 801 802 priv->rx.done_idx = done_idx; 803 804 return npkts; 805 } 806 807 static int ave_napi_poll_rx(struct napi_struct *napi, int budget) 808 { 809 struct ave_private *priv; 810 struct net_device *ndev; 811 int num; 812 813 priv = container_of(napi, struct ave_private, napi_rx); 814 ndev = priv->ndev; 815 816 num = ave_rx_receive(ndev, budget); 817 if (num < budget) { 818 napi_complete_done(napi, num); 819 820 /* enable Rx interrupt when NAPI finishes */ 821 ave_irq_enable(ndev, AVE_GI_RXIINT); 822 } 823 824 return num; 825 } 826 827 static int ave_napi_poll_tx(struct napi_struct *napi, int budget) 828 { 829 struct ave_private *priv; 830 struct net_device *ndev; 831 int num; 832 833 priv = container_of(napi, struct ave_private, napi_tx); 834 ndev = priv->ndev; 835 836 num = ave_tx_complete(ndev); 837 napi_complete(napi); 838 839 /* enable Tx interrupt when NAPI finishes */ 840 ave_irq_enable(ndev, AVE_GI_TX); 841 842 return num; 843 } 844 845 static void ave_global_reset(struct net_device *ndev) 846 { 847 struct ave_private *priv = netdev_priv(ndev); 848 u32 val; 849 850 /* set config register */ 851 val = AVE_CFGR_FLE | AVE_CFGR_IPFCEN | AVE_CFGR_CHE; 852 if (!phy_interface_mode_is_rgmii(priv->phy_mode)) 853 val |= AVE_CFGR_MII; 854 writel(val, priv->base + AVE_CFGR); 855 856 /* reset RMII register */ 857 val = readl(priv->base + AVE_RSTCTRL); 858 val &= ~AVE_RSTCTRL_RMIIRST; 859 writel(val, priv->base + AVE_RSTCTRL); 860 861 /* assert reset */ 862 writel(AVE_GRR_GRST | AVE_GRR_PHYRST, priv->base + AVE_GRR); 863 msleep(20); 864 865 /* 1st, negate PHY reset only */ 866 writel(AVE_GRR_GRST, priv->base + AVE_GRR); 867 msleep(40); 868 869 /* negate reset */ 870 writel(0, priv->base + AVE_GRR); 871 msleep(40); 872 873 /* negate RMII register */ 874 val = readl(priv->base + AVE_RSTCTRL); 875 val |= AVE_RSTCTRL_RMIIRST; 876 writel(val, priv->base + AVE_RSTCTRL); 877 878 ave_irq_disable_all(ndev); 879 } 880 881 static void ave_rxfifo_reset(struct net_device *ndev) 882 { 883 struct ave_private *priv = netdev_priv(ndev); 884 u32 rxcr_org; 885 886 /* save and disable MAC receive op */ 887 rxcr_org = readl(priv->base + AVE_RXCR); 888 writel(rxcr_org & (~AVE_RXCR_RXEN), priv->base + AVE_RXCR); 889 890 /* suspend Rx descriptor */ 891 ave_desc_switch(ndev, AVE_DESC_RX_SUSPEND); 892 893 /* receive all packets before descriptor starts */ 894 ave_rx_receive(ndev, priv->rx.ndesc); 895 896 /* assert reset */ 897 writel(AVE_GRR_RXFFR, priv->base + AVE_GRR); 898 usleep_range(40, 50); 899 900 /* negate reset */ 901 writel(0, priv->base + AVE_GRR); 902 usleep_range(10, 20); 903 904 /* negate interrupt status */ 905 writel(AVE_GI_RXOVF, priv->base + AVE_GISR); 906 907 /* permit descriptor */ 908 ave_desc_switch(ndev, AVE_DESC_RX_PERMIT); 909 910 /* restore MAC reccieve op */ 911 writel(rxcr_org, priv->base + AVE_RXCR); 912 } 913 914 static irqreturn_t ave_irq_handler(int irq, void *netdev) 915 { 916 struct net_device *ndev = (struct net_device *)netdev; 917 struct ave_private *priv = netdev_priv(ndev); 918 u32 gimr_val, gisr_val; 919 920 gimr_val = ave_irq_disable_all(ndev); 921 922 /* get interrupt status */ 923 gisr_val = readl(priv->base + AVE_GISR); 924 925 /* PHY */ 926 if (gisr_val & AVE_GI_PHY) 927 writel(AVE_GI_PHY, priv->base + AVE_GISR); 928 929 /* check exceeding packet */ 930 if (gisr_val & AVE_GI_RXERR) { 931 writel(AVE_GI_RXERR, priv->base + AVE_GISR); 932 netdev_err(ndev, "receive a packet exceeding frame buffer\n"); 933 } 934 935 gisr_val &= gimr_val; 936 if (!gisr_val) 937 goto exit_isr; 938 939 /* RxFIFO overflow */ 940 if (gisr_val & AVE_GI_RXOVF) { 941 priv->stats_rx.fifo_errors++; 942 ave_rxfifo_reset(ndev); 943 goto exit_isr; 944 } 945 946 /* Rx drop */ 947 if (gisr_val & AVE_GI_RXDROP) { 948 priv->stats_rx.dropped++; 949 writel(AVE_GI_RXDROP, priv->base + AVE_GISR); 950 } 951 952 /* Rx interval */ 953 if (gisr_val & AVE_GI_RXIINT) { 954 napi_schedule(&priv->napi_rx); 955 /* still force to disable Rx interrupt until NAPI finishes */ 956 gimr_val &= ~AVE_GI_RXIINT; 957 } 958 959 /* Tx completed */ 960 if (gisr_val & AVE_GI_TX) { 961 napi_schedule(&priv->napi_tx); 962 /* still force to disable Tx interrupt until NAPI finishes */ 963 gimr_val &= ~AVE_GI_TX; 964 } 965 966 exit_isr: 967 ave_irq_restore(ndev, gimr_val); 968 969 return IRQ_HANDLED; 970 } 971 972 static int ave_pfsel_start(struct net_device *ndev, unsigned int entry) 973 { 974 struct ave_private *priv = netdev_priv(ndev); 975 u32 val; 976 977 if (WARN_ON(entry > AVE_PF_SIZE)) 978 return -EINVAL; 979 980 val = readl(priv->base + AVE_PFEN); 981 writel(val | BIT(entry), priv->base + AVE_PFEN); 982 983 return 0; 984 } 985 986 static int ave_pfsel_stop(struct net_device *ndev, unsigned int entry) 987 { 988 struct ave_private *priv = netdev_priv(ndev); 989 u32 val; 990 991 if (WARN_ON(entry > AVE_PF_SIZE)) 992 return -EINVAL; 993 994 val = readl(priv->base + AVE_PFEN); 995 writel(val & ~BIT(entry), priv->base + AVE_PFEN); 996 997 return 0; 998 } 999 1000 static int ave_pfsel_set_macaddr(struct net_device *ndev, 1001 unsigned int entry, 1002 const unsigned char *mac_addr, 1003 unsigned int set_size) 1004 { 1005 struct ave_private *priv = netdev_priv(ndev); 1006 1007 if (WARN_ON(entry > AVE_PF_SIZE)) 1008 return -EINVAL; 1009 if (WARN_ON(set_size > 6)) 1010 return -EINVAL; 1011 1012 ave_pfsel_stop(ndev, entry); 1013 1014 /* set MAC address for the filter */ 1015 ave_hw_write_macaddr(ndev, mac_addr, 1016 AVE_PKTF(entry), AVE_PKTF(entry) + 4); 1017 1018 /* set byte mask */ 1019 writel(GENMASK(31, set_size) & AVE_PFMBYTE_MASK0, 1020 priv->base + AVE_PFMBYTE(entry)); 1021 writel(AVE_PFMBYTE_MASK1, priv->base + AVE_PFMBYTE(entry) + 4); 1022 1023 /* set bit mask filter */ 1024 writel(AVE_PFMBIT_MASK, priv->base + AVE_PFMBIT(entry)); 1025 1026 /* set selector to ring 0 */ 1027 writel(0, priv->base + AVE_PFSEL(entry)); 1028 1029 /* restart filter */ 1030 ave_pfsel_start(ndev, entry); 1031 1032 return 0; 1033 } 1034 1035 static void ave_pfsel_set_promisc(struct net_device *ndev, 1036 unsigned int entry, u32 rxring) 1037 { 1038 struct ave_private *priv = netdev_priv(ndev); 1039 1040 if (WARN_ON(entry > AVE_PF_SIZE)) 1041 return; 1042 1043 ave_pfsel_stop(ndev, entry); 1044 1045 /* set byte mask */ 1046 writel(AVE_PFMBYTE_MASK0, priv->base + AVE_PFMBYTE(entry)); 1047 writel(AVE_PFMBYTE_MASK1, priv->base + AVE_PFMBYTE(entry) + 4); 1048 1049 /* set bit mask filter */ 1050 writel(AVE_PFMBIT_MASK, priv->base + AVE_PFMBIT(entry)); 1051 1052 /* set selector to rxring */ 1053 writel(rxring, priv->base + AVE_PFSEL(entry)); 1054 1055 ave_pfsel_start(ndev, entry); 1056 } 1057 1058 static void ave_pfsel_init(struct net_device *ndev) 1059 { 1060 unsigned char bcast_mac[ETH_ALEN]; 1061 int i; 1062 1063 eth_broadcast_addr(bcast_mac); 1064 1065 for (i = 0; i < AVE_PF_SIZE; i++) 1066 ave_pfsel_stop(ndev, i); 1067 1068 /* promiscious entry, select ring 0 */ 1069 ave_pfsel_set_promisc(ndev, AVE_PFNUM_FILTER, 0); 1070 1071 /* unicast entry */ 1072 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_UNICAST, ndev->dev_addr, 6); 1073 1074 /* broadcast entry */ 1075 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_BROADCAST, bcast_mac, 6); 1076 } 1077 1078 static void ave_phy_adjust_link(struct net_device *ndev) 1079 { 1080 struct ave_private *priv = netdev_priv(ndev); 1081 struct phy_device *phydev = ndev->phydev; 1082 u32 val, txcr, rxcr, rxcr_org; 1083 u16 rmt_adv = 0, lcl_adv = 0; 1084 u8 cap; 1085 1086 /* set RGMII speed */ 1087 val = readl(priv->base + AVE_TXCR); 1088 val &= ~(AVE_TXCR_TXSPD_100 | AVE_TXCR_TXSPD_1G); 1089 1090 if (phy_interface_is_rgmii(phydev) && phydev->speed == SPEED_1000) 1091 val |= AVE_TXCR_TXSPD_1G; 1092 else if (phydev->speed == SPEED_100) 1093 val |= AVE_TXCR_TXSPD_100; 1094 1095 writel(val, priv->base + AVE_TXCR); 1096 1097 /* set RMII speed (100M/10M only) */ 1098 if (!phy_interface_is_rgmii(phydev)) { 1099 val = readl(priv->base + AVE_LINKSEL); 1100 if (phydev->speed == SPEED_10) 1101 val &= ~AVE_LINKSEL_100M; 1102 else 1103 val |= AVE_LINKSEL_100M; 1104 writel(val, priv->base + AVE_LINKSEL); 1105 } 1106 1107 /* check current RXCR/TXCR */ 1108 rxcr = readl(priv->base + AVE_RXCR); 1109 txcr = readl(priv->base + AVE_TXCR); 1110 rxcr_org = rxcr; 1111 1112 if (phydev->duplex) { 1113 rxcr |= AVE_RXCR_FDUPEN; 1114 1115 if (phydev->pause) 1116 rmt_adv |= LPA_PAUSE_CAP; 1117 if (phydev->asym_pause) 1118 rmt_adv |= LPA_PAUSE_ASYM; 1119 if (phydev->advertising & ADVERTISED_Pause) 1120 lcl_adv |= ADVERTISE_PAUSE_CAP; 1121 if (phydev->advertising & ADVERTISED_Asym_Pause) 1122 lcl_adv |= ADVERTISE_PAUSE_ASYM; 1123 1124 cap = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); 1125 if (cap & FLOW_CTRL_TX) 1126 txcr |= AVE_TXCR_FLOCTR; 1127 else 1128 txcr &= ~AVE_TXCR_FLOCTR; 1129 if (cap & FLOW_CTRL_RX) 1130 rxcr |= AVE_RXCR_FLOCTR; 1131 else 1132 rxcr &= ~AVE_RXCR_FLOCTR; 1133 } else { 1134 rxcr &= ~AVE_RXCR_FDUPEN; 1135 rxcr &= ~AVE_RXCR_FLOCTR; 1136 txcr &= ~AVE_TXCR_FLOCTR; 1137 } 1138 1139 if (rxcr_org != rxcr) { 1140 /* disable Rx mac */ 1141 writel(rxcr & ~AVE_RXCR_RXEN, priv->base + AVE_RXCR); 1142 /* change and enable TX/Rx mac */ 1143 writel(txcr, priv->base + AVE_TXCR); 1144 writel(rxcr, priv->base + AVE_RXCR); 1145 } 1146 1147 phy_print_status(phydev); 1148 } 1149 1150 static void ave_macaddr_init(struct net_device *ndev) 1151 { 1152 ave_hw_write_macaddr(ndev, ndev->dev_addr, AVE_RXMAC1R, AVE_RXMAC2R); 1153 1154 /* pfsel unicast entry */ 1155 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_UNICAST, ndev->dev_addr, 6); 1156 } 1157 1158 static int ave_init(struct net_device *ndev) 1159 { 1160 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; 1161 struct ave_private *priv = netdev_priv(ndev); 1162 struct device *dev = ndev->dev.parent; 1163 struct device_node *np = dev->of_node; 1164 struct device_node *mdio_np; 1165 struct phy_device *phydev; 1166 int nc, nr, ret; 1167 1168 /* enable clk because of hw access until ndo_open */ 1169 for (nc = 0; nc < priv->nclks; nc++) { 1170 ret = clk_prepare_enable(priv->clk[nc]); 1171 if (ret) { 1172 dev_err(dev, "can't enable clock\n"); 1173 goto out_clk_disable; 1174 } 1175 } 1176 1177 for (nr = 0; nr < priv->nrsts; nr++) { 1178 ret = reset_control_deassert(priv->rst[nr]); 1179 if (ret) { 1180 dev_err(dev, "can't deassert reset\n"); 1181 goto out_reset_assert; 1182 } 1183 } 1184 1185 ret = regmap_update_bits(priv->regmap, SG_ETPINMODE, 1186 priv->pinmode_mask, priv->pinmode_val); 1187 if (ret) 1188 return ret; 1189 1190 ave_global_reset(ndev); 1191 1192 mdio_np = of_get_child_by_name(np, "mdio"); 1193 if (!mdio_np) { 1194 dev_err(dev, "mdio node not found\n"); 1195 ret = -EINVAL; 1196 goto out_reset_assert; 1197 } 1198 ret = of_mdiobus_register(priv->mdio, mdio_np); 1199 of_node_put(mdio_np); 1200 if (ret) { 1201 dev_err(dev, "failed to register mdiobus\n"); 1202 goto out_reset_assert; 1203 } 1204 1205 phydev = of_phy_get_and_connect(ndev, np, ave_phy_adjust_link); 1206 if (!phydev) { 1207 dev_err(dev, "could not attach to PHY\n"); 1208 ret = -ENODEV; 1209 goto out_mdio_unregister; 1210 } 1211 1212 priv->phydev = phydev; 1213 1214 phy_ethtool_get_wol(phydev, &wol); 1215 device_set_wakeup_capable(&ndev->dev, !!wol.supported); 1216 1217 if (!phy_interface_is_rgmii(phydev)) 1218 phy_set_max_speed(phydev, SPEED_100); 1219 1220 phy_support_asym_pause(phydev); 1221 1222 phy_attached_info(phydev); 1223 1224 return 0; 1225 1226 out_mdio_unregister: 1227 mdiobus_unregister(priv->mdio); 1228 out_reset_assert: 1229 while (--nr >= 0) 1230 reset_control_assert(priv->rst[nr]); 1231 out_clk_disable: 1232 while (--nc >= 0) 1233 clk_disable_unprepare(priv->clk[nc]); 1234 1235 return ret; 1236 } 1237 1238 static void ave_uninit(struct net_device *ndev) 1239 { 1240 struct ave_private *priv = netdev_priv(ndev); 1241 int i; 1242 1243 phy_disconnect(priv->phydev); 1244 mdiobus_unregister(priv->mdio); 1245 1246 /* disable clk because of hw access after ndo_stop */ 1247 for (i = 0; i < priv->nrsts; i++) 1248 reset_control_assert(priv->rst[i]); 1249 for (i = 0; i < priv->nclks; i++) 1250 clk_disable_unprepare(priv->clk[i]); 1251 } 1252 1253 static int ave_open(struct net_device *ndev) 1254 { 1255 struct ave_private *priv = netdev_priv(ndev); 1256 int entry; 1257 int ret; 1258 u32 val; 1259 1260 ret = request_irq(priv->irq, ave_irq_handler, IRQF_SHARED, ndev->name, 1261 ndev); 1262 if (ret) 1263 return ret; 1264 1265 priv->tx.desc = kcalloc(priv->tx.ndesc, sizeof(*priv->tx.desc), 1266 GFP_KERNEL); 1267 if (!priv->tx.desc) { 1268 ret = -ENOMEM; 1269 goto out_free_irq; 1270 } 1271 1272 priv->rx.desc = kcalloc(priv->rx.ndesc, sizeof(*priv->rx.desc), 1273 GFP_KERNEL); 1274 if (!priv->rx.desc) { 1275 kfree(priv->tx.desc); 1276 ret = -ENOMEM; 1277 goto out_free_irq; 1278 } 1279 1280 /* initialize Tx work and descriptor */ 1281 priv->tx.proc_idx = 0; 1282 priv->tx.done_idx = 0; 1283 for (entry = 0; entry < priv->tx.ndesc; entry++) { 1284 ave_desc_write_cmdsts(ndev, AVE_DESCID_TX, entry, 0); 1285 ave_desc_write_addr(ndev, AVE_DESCID_TX, entry, 0); 1286 } 1287 writel(AVE_TXDC_ADDR_START | 1288 (((priv->tx.ndesc * priv->desc_size) << 16) & AVE_TXDC_SIZE), 1289 priv->base + AVE_TXDC); 1290 1291 /* initialize Rx work and descriptor */ 1292 priv->rx.proc_idx = 0; 1293 priv->rx.done_idx = 0; 1294 for (entry = 0; entry < priv->rx.ndesc; entry++) { 1295 if (ave_rxdesc_prepare(ndev, entry)) 1296 break; 1297 } 1298 writel(AVE_RXDC0_ADDR_START | 1299 (((priv->rx.ndesc * priv->desc_size) << 16) & AVE_RXDC0_SIZE), 1300 priv->base + AVE_RXDC0); 1301 1302 ave_desc_switch(ndev, AVE_DESC_START); 1303 1304 ave_pfsel_init(ndev); 1305 ave_macaddr_init(ndev); 1306 1307 /* set Rx configuration */ 1308 /* full duplex, enable pause drop, enalbe flow control */ 1309 val = AVE_RXCR_RXEN | AVE_RXCR_FDUPEN | AVE_RXCR_DRPEN | 1310 AVE_RXCR_FLOCTR | (AVE_MAX_ETHFRAME & AVE_RXCR_MPSIZ_MASK); 1311 writel(val, priv->base + AVE_RXCR); 1312 1313 /* set Tx configuration */ 1314 /* enable flow control, disable loopback */ 1315 writel(AVE_TXCR_FLOCTR, priv->base + AVE_TXCR); 1316 1317 /* enable timer, clear EN,INTM, and mask interval unit(BSCK) */ 1318 val = readl(priv->base + AVE_IIRQC) & AVE_IIRQC_BSCK; 1319 val |= AVE_IIRQC_EN0 | (AVE_INTM_COUNT << 16); 1320 writel(val, priv->base + AVE_IIRQC); 1321 1322 val = AVE_GI_RXIINT | AVE_GI_RXOVF | AVE_GI_TX | AVE_GI_RXDROP; 1323 ave_irq_restore(ndev, val); 1324 1325 napi_enable(&priv->napi_rx); 1326 napi_enable(&priv->napi_tx); 1327 1328 phy_start(ndev->phydev); 1329 phy_start_aneg(ndev->phydev); 1330 netif_start_queue(ndev); 1331 1332 return 0; 1333 1334 out_free_irq: 1335 disable_irq(priv->irq); 1336 free_irq(priv->irq, ndev); 1337 1338 return ret; 1339 } 1340 1341 static int ave_stop(struct net_device *ndev) 1342 { 1343 struct ave_private *priv = netdev_priv(ndev); 1344 int entry; 1345 1346 ave_irq_disable_all(ndev); 1347 disable_irq(priv->irq); 1348 free_irq(priv->irq, ndev); 1349 1350 netif_tx_disable(ndev); 1351 phy_stop(ndev->phydev); 1352 napi_disable(&priv->napi_tx); 1353 napi_disable(&priv->napi_rx); 1354 1355 ave_desc_switch(ndev, AVE_DESC_STOP); 1356 1357 /* free Tx buffer */ 1358 for (entry = 0; entry < priv->tx.ndesc; entry++) { 1359 if (!priv->tx.desc[entry].skbs) 1360 continue; 1361 1362 ave_dma_unmap(ndev, &priv->tx.desc[entry], DMA_TO_DEVICE); 1363 dev_kfree_skb_any(priv->tx.desc[entry].skbs); 1364 priv->tx.desc[entry].skbs = NULL; 1365 } 1366 priv->tx.proc_idx = 0; 1367 priv->tx.done_idx = 0; 1368 1369 /* free Rx buffer */ 1370 for (entry = 0; entry < priv->rx.ndesc; entry++) { 1371 if (!priv->rx.desc[entry].skbs) 1372 continue; 1373 1374 ave_dma_unmap(ndev, &priv->rx.desc[entry], DMA_FROM_DEVICE); 1375 dev_kfree_skb_any(priv->rx.desc[entry].skbs); 1376 priv->rx.desc[entry].skbs = NULL; 1377 } 1378 priv->rx.proc_idx = 0; 1379 priv->rx.done_idx = 0; 1380 1381 kfree(priv->tx.desc); 1382 kfree(priv->rx.desc); 1383 1384 return 0; 1385 } 1386 1387 static int ave_start_xmit(struct sk_buff *skb, struct net_device *ndev) 1388 { 1389 struct ave_private *priv = netdev_priv(ndev); 1390 u32 proc_idx, done_idx, ndesc, cmdsts; 1391 int ret, freepkt; 1392 dma_addr_t paddr; 1393 1394 proc_idx = priv->tx.proc_idx; 1395 done_idx = priv->tx.done_idx; 1396 ndesc = priv->tx.ndesc; 1397 freepkt = ((done_idx + ndesc - 1) - proc_idx) % ndesc; 1398 1399 /* stop queue when not enough entry */ 1400 if (unlikely(freepkt < 1)) { 1401 netif_stop_queue(ndev); 1402 return NETDEV_TX_BUSY; 1403 } 1404 1405 /* add padding for short packet */ 1406 if (skb_put_padto(skb, ETH_ZLEN)) { 1407 priv->stats_tx.dropped++; 1408 return NETDEV_TX_OK; 1409 } 1410 1411 /* map Tx buffer 1412 * Tx buffer set to the Tx descriptor doesn't have any restriction. 1413 */ 1414 ret = ave_dma_map(ndev, &priv->tx.desc[proc_idx], 1415 skb->data, skb->len, DMA_TO_DEVICE, &paddr); 1416 if (ret) { 1417 dev_kfree_skb_any(skb); 1418 priv->stats_tx.dropped++; 1419 return NETDEV_TX_OK; 1420 } 1421 1422 priv->tx.desc[proc_idx].skbs = skb; 1423 1424 ave_desc_write_addr(ndev, AVE_DESCID_TX, proc_idx, paddr); 1425 1426 cmdsts = AVE_STS_OWN | AVE_STS_1ST | AVE_STS_LAST | 1427 (skb->len & AVE_STS_PKTLEN_TX_MASK); 1428 1429 /* set interrupt per AVE_FORCE_TXINTCNT or when queue is stopped */ 1430 if (!(proc_idx % AVE_FORCE_TXINTCNT) || netif_queue_stopped(ndev)) 1431 cmdsts |= AVE_STS_INTR; 1432 1433 /* disable checksum calculation when skb doesn't calurate checksum */ 1434 if (skb->ip_summed == CHECKSUM_NONE || 1435 skb->ip_summed == CHECKSUM_UNNECESSARY) 1436 cmdsts |= AVE_STS_NOCSUM; 1437 1438 ave_desc_write_cmdsts(ndev, AVE_DESCID_TX, proc_idx, cmdsts); 1439 1440 priv->tx.proc_idx = (proc_idx + 1) % ndesc; 1441 1442 return NETDEV_TX_OK; 1443 } 1444 1445 static int ave_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) 1446 { 1447 return phy_mii_ioctl(ndev->phydev, ifr, cmd); 1448 } 1449 1450 static const u8 v4multi_macadr[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; 1451 static const u8 v6multi_macadr[] = { 0x33, 0x00, 0x00, 0x00, 0x00, 0x00 }; 1452 1453 static void ave_set_rx_mode(struct net_device *ndev) 1454 { 1455 struct ave_private *priv = netdev_priv(ndev); 1456 struct netdev_hw_addr *hw_adr; 1457 int count, mc_cnt; 1458 u32 val; 1459 1460 /* MAC addr filter enable for promiscious mode */ 1461 mc_cnt = netdev_mc_count(ndev); 1462 val = readl(priv->base + AVE_RXCR); 1463 if (ndev->flags & IFF_PROMISC || !mc_cnt) 1464 val &= ~AVE_RXCR_AFEN; 1465 else 1466 val |= AVE_RXCR_AFEN; 1467 writel(val, priv->base + AVE_RXCR); 1468 1469 /* set all multicast address */ 1470 if ((ndev->flags & IFF_ALLMULTI) || mc_cnt > AVE_PF_MULTICAST_SIZE) { 1471 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST, 1472 v4multi_macadr, 1); 1473 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST + 1, 1474 v6multi_macadr, 1); 1475 } else { 1476 /* stop all multicast filter */ 1477 for (count = 0; count < AVE_PF_MULTICAST_SIZE; count++) 1478 ave_pfsel_stop(ndev, AVE_PFNUM_MULTICAST + count); 1479 1480 /* set multicast addresses */ 1481 count = 0; 1482 netdev_for_each_mc_addr(hw_adr, ndev) { 1483 if (count == mc_cnt) 1484 break; 1485 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST + count, 1486 hw_adr->addr, 6); 1487 count++; 1488 } 1489 } 1490 } 1491 1492 static void ave_get_stats64(struct net_device *ndev, 1493 struct rtnl_link_stats64 *stats) 1494 { 1495 struct ave_private *priv = netdev_priv(ndev); 1496 unsigned int start; 1497 1498 do { 1499 start = u64_stats_fetch_begin_irq(&priv->stats_rx.syncp); 1500 stats->rx_packets = priv->stats_rx.packets; 1501 stats->rx_bytes = priv->stats_rx.bytes; 1502 } while (u64_stats_fetch_retry_irq(&priv->stats_rx.syncp, start)); 1503 1504 do { 1505 start = u64_stats_fetch_begin_irq(&priv->stats_tx.syncp); 1506 stats->tx_packets = priv->stats_tx.packets; 1507 stats->tx_bytes = priv->stats_tx.bytes; 1508 } while (u64_stats_fetch_retry_irq(&priv->stats_tx.syncp, start)); 1509 1510 stats->rx_errors = priv->stats_rx.errors; 1511 stats->tx_errors = priv->stats_tx.errors; 1512 stats->rx_dropped = priv->stats_rx.dropped; 1513 stats->tx_dropped = priv->stats_tx.dropped; 1514 stats->rx_fifo_errors = priv->stats_rx.fifo_errors; 1515 stats->collisions = priv->stats_tx.collisions; 1516 } 1517 1518 static int ave_set_mac_address(struct net_device *ndev, void *p) 1519 { 1520 int ret = eth_mac_addr(ndev, p); 1521 1522 if (ret) 1523 return ret; 1524 1525 ave_macaddr_init(ndev); 1526 1527 return 0; 1528 } 1529 1530 static const struct net_device_ops ave_netdev_ops = { 1531 .ndo_init = ave_init, 1532 .ndo_uninit = ave_uninit, 1533 .ndo_open = ave_open, 1534 .ndo_stop = ave_stop, 1535 .ndo_start_xmit = ave_start_xmit, 1536 .ndo_do_ioctl = ave_ioctl, 1537 .ndo_set_rx_mode = ave_set_rx_mode, 1538 .ndo_get_stats64 = ave_get_stats64, 1539 .ndo_set_mac_address = ave_set_mac_address, 1540 }; 1541 1542 static int ave_probe(struct platform_device *pdev) 1543 { 1544 const struct ave_soc_data *data; 1545 struct device *dev = &pdev->dev; 1546 char buf[ETHTOOL_FWVERS_LEN]; 1547 struct of_phandle_args args; 1548 phy_interface_t phy_mode; 1549 struct ave_private *priv; 1550 struct net_device *ndev; 1551 struct device_node *np; 1552 struct resource *res; 1553 const void *mac_addr; 1554 void __iomem *base; 1555 const char *name; 1556 int i, irq, ret; 1557 u64 dma_mask; 1558 u32 ave_id; 1559 1560 data = of_device_get_match_data(dev); 1561 if (WARN_ON(!data)) 1562 return -EINVAL; 1563 1564 np = dev->of_node; 1565 phy_mode = of_get_phy_mode(np); 1566 if (phy_mode < 0) { 1567 dev_err(dev, "phy-mode not found\n"); 1568 return -EINVAL; 1569 } 1570 1571 irq = platform_get_irq(pdev, 0); 1572 if (irq < 0) { 1573 dev_err(dev, "IRQ not found\n"); 1574 return irq; 1575 } 1576 1577 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1578 base = devm_ioremap_resource(dev, res); 1579 if (IS_ERR(base)) 1580 return PTR_ERR(base); 1581 1582 ndev = alloc_etherdev(sizeof(struct ave_private)); 1583 if (!ndev) { 1584 dev_err(dev, "can't allocate ethernet device\n"); 1585 return -ENOMEM; 1586 } 1587 1588 ndev->netdev_ops = &ave_netdev_ops; 1589 ndev->ethtool_ops = &ave_ethtool_ops; 1590 SET_NETDEV_DEV(ndev, dev); 1591 1592 ndev->features |= (NETIF_F_IP_CSUM | NETIF_F_RXCSUM); 1593 ndev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_RXCSUM); 1594 1595 ndev->max_mtu = AVE_MAX_ETHFRAME - (ETH_HLEN + ETH_FCS_LEN); 1596 1597 mac_addr = of_get_mac_address(np); 1598 if (mac_addr) 1599 ether_addr_copy(ndev->dev_addr, mac_addr); 1600 1601 /* if the mac address is invalid, use random mac address */ 1602 if (!is_valid_ether_addr(ndev->dev_addr)) { 1603 eth_hw_addr_random(ndev); 1604 dev_warn(dev, "Using random MAC address: %pM\n", 1605 ndev->dev_addr); 1606 } 1607 1608 priv = netdev_priv(ndev); 1609 priv->base = base; 1610 priv->irq = irq; 1611 priv->ndev = ndev; 1612 priv->msg_enable = netif_msg_init(-1, AVE_DEFAULT_MSG_ENABLE); 1613 priv->phy_mode = phy_mode; 1614 priv->data = data; 1615 1616 if (IS_DESC_64BIT(priv)) { 1617 priv->desc_size = AVE_DESC_SIZE_64; 1618 priv->tx.daddr = AVE_TXDM_64; 1619 priv->rx.daddr = AVE_RXDM_64; 1620 dma_mask = DMA_BIT_MASK(64); 1621 } else { 1622 priv->desc_size = AVE_DESC_SIZE_32; 1623 priv->tx.daddr = AVE_TXDM_32; 1624 priv->rx.daddr = AVE_RXDM_32; 1625 dma_mask = DMA_BIT_MASK(32); 1626 } 1627 ret = dma_set_mask(dev, dma_mask); 1628 if (ret) 1629 goto out_free_netdev; 1630 1631 priv->tx.ndesc = AVE_NR_TXDESC; 1632 priv->rx.ndesc = AVE_NR_RXDESC; 1633 1634 u64_stats_init(&priv->stats_tx.syncp); 1635 u64_stats_init(&priv->stats_rx.syncp); 1636 1637 for (i = 0; i < AVE_MAX_CLKS; i++) { 1638 name = priv->data->clock_names[i]; 1639 if (!name) 1640 break; 1641 priv->clk[i] = devm_clk_get(dev, name); 1642 if (IS_ERR(priv->clk[i])) { 1643 ret = PTR_ERR(priv->clk[i]); 1644 goto out_free_netdev; 1645 } 1646 priv->nclks++; 1647 } 1648 1649 for (i = 0; i < AVE_MAX_RSTS; i++) { 1650 name = priv->data->reset_names[i]; 1651 if (!name) 1652 break; 1653 priv->rst[i] = devm_reset_control_get_shared(dev, name); 1654 if (IS_ERR(priv->rst[i])) { 1655 ret = PTR_ERR(priv->rst[i]); 1656 goto out_free_netdev; 1657 } 1658 priv->nrsts++; 1659 } 1660 1661 ret = of_parse_phandle_with_fixed_args(np, 1662 "socionext,syscon-phy-mode", 1663 1, 0, &args); 1664 if (ret) { 1665 netdev_err(ndev, "can't get syscon-phy-mode property\n"); 1666 goto out_free_netdev; 1667 } 1668 priv->regmap = syscon_node_to_regmap(args.np); 1669 of_node_put(args.np); 1670 if (IS_ERR(priv->regmap)) { 1671 netdev_err(ndev, "can't map syscon-phy-mode\n"); 1672 ret = PTR_ERR(priv->regmap); 1673 goto out_free_netdev; 1674 } 1675 ret = priv->data->get_pinmode(priv, phy_mode, args.args[0]); 1676 if (ret) { 1677 netdev_err(ndev, "invalid phy-mode setting\n"); 1678 goto out_free_netdev; 1679 } 1680 1681 priv->mdio = devm_mdiobus_alloc(dev); 1682 if (!priv->mdio) { 1683 ret = -ENOMEM; 1684 goto out_free_netdev; 1685 } 1686 priv->mdio->priv = ndev; 1687 priv->mdio->parent = dev; 1688 priv->mdio->read = ave_mdiobus_read; 1689 priv->mdio->write = ave_mdiobus_write; 1690 priv->mdio->name = "uniphier-mdio"; 1691 snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "%s-%x", 1692 pdev->name, pdev->id); 1693 1694 /* Register as a NAPI supported driver */ 1695 netif_napi_add(ndev, &priv->napi_rx, ave_napi_poll_rx, priv->rx.ndesc); 1696 netif_tx_napi_add(ndev, &priv->napi_tx, ave_napi_poll_tx, 1697 priv->tx.ndesc); 1698 1699 platform_set_drvdata(pdev, ndev); 1700 1701 ret = register_netdev(ndev); 1702 if (ret) { 1703 dev_err(dev, "failed to register netdevice\n"); 1704 goto out_del_napi; 1705 } 1706 1707 /* get ID and version */ 1708 ave_id = readl(priv->base + AVE_IDR); 1709 ave_hw_read_version(ndev, buf, sizeof(buf)); 1710 1711 dev_info(dev, "Socionext %c%c%c%c Ethernet IP %s (irq=%d, phy=%s)\n", 1712 (ave_id >> 24) & 0xff, (ave_id >> 16) & 0xff, 1713 (ave_id >> 8) & 0xff, (ave_id >> 0) & 0xff, 1714 buf, priv->irq, phy_modes(phy_mode)); 1715 1716 return 0; 1717 1718 out_del_napi: 1719 netif_napi_del(&priv->napi_rx); 1720 netif_napi_del(&priv->napi_tx); 1721 out_free_netdev: 1722 free_netdev(ndev); 1723 1724 return ret; 1725 } 1726 1727 static int ave_remove(struct platform_device *pdev) 1728 { 1729 struct net_device *ndev = platform_get_drvdata(pdev); 1730 struct ave_private *priv = netdev_priv(ndev); 1731 1732 unregister_netdev(ndev); 1733 netif_napi_del(&priv->napi_rx); 1734 netif_napi_del(&priv->napi_tx); 1735 free_netdev(ndev); 1736 1737 return 0; 1738 } 1739 1740 static int ave_pro4_get_pinmode(struct ave_private *priv, 1741 phy_interface_t phy_mode, u32 arg) 1742 { 1743 if (arg > 0) 1744 return -EINVAL; 1745 1746 priv->pinmode_mask = SG_ETPINMODE_RMII(0); 1747 1748 switch (phy_mode) { 1749 case PHY_INTERFACE_MODE_RMII: 1750 priv->pinmode_val = SG_ETPINMODE_RMII(0); 1751 break; 1752 case PHY_INTERFACE_MODE_MII: 1753 case PHY_INTERFACE_MODE_RGMII: 1754 priv->pinmode_val = 0; 1755 break; 1756 default: 1757 return -EINVAL; 1758 } 1759 1760 return 0; 1761 } 1762 1763 static int ave_ld11_get_pinmode(struct ave_private *priv, 1764 phy_interface_t phy_mode, u32 arg) 1765 { 1766 if (arg > 0) 1767 return -EINVAL; 1768 1769 priv->pinmode_mask = SG_ETPINMODE_EXTPHY | SG_ETPINMODE_RMII(0); 1770 1771 switch (phy_mode) { 1772 case PHY_INTERFACE_MODE_INTERNAL: 1773 priv->pinmode_val = 0; 1774 break; 1775 case PHY_INTERFACE_MODE_RMII: 1776 priv->pinmode_val = SG_ETPINMODE_EXTPHY | SG_ETPINMODE_RMII(0); 1777 break; 1778 default: 1779 return -EINVAL; 1780 } 1781 1782 return 0; 1783 } 1784 1785 static int ave_ld20_get_pinmode(struct ave_private *priv, 1786 phy_interface_t phy_mode, u32 arg) 1787 { 1788 if (arg > 0) 1789 return -EINVAL; 1790 1791 priv->pinmode_mask = SG_ETPINMODE_RMII(0); 1792 1793 switch (phy_mode) { 1794 case PHY_INTERFACE_MODE_RMII: 1795 priv->pinmode_val = SG_ETPINMODE_RMII(0); 1796 break; 1797 case PHY_INTERFACE_MODE_RGMII: 1798 priv->pinmode_val = 0; 1799 break; 1800 default: 1801 return -EINVAL; 1802 } 1803 1804 return 0; 1805 } 1806 1807 static int ave_pxs3_get_pinmode(struct ave_private *priv, 1808 phy_interface_t phy_mode, u32 arg) 1809 { 1810 if (arg > 1) 1811 return -EINVAL; 1812 1813 priv->pinmode_mask = SG_ETPINMODE_RMII(arg); 1814 1815 switch (phy_mode) { 1816 case PHY_INTERFACE_MODE_RMII: 1817 priv->pinmode_val = SG_ETPINMODE_RMII(arg); 1818 break; 1819 case PHY_INTERFACE_MODE_RGMII: 1820 priv->pinmode_val = 0; 1821 break; 1822 default: 1823 return -EINVAL; 1824 } 1825 1826 return 0; 1827 } 1828 1829 static const struct ave_soc_data ave_pro4_data = { 1830 .is_desc_64bit = false, 1831 .clock_names = { 1832 "gio", "ether", "ether-gb", "ether-phy", 1833 }, 1834 .reset_names = { 1835 "gio", "ether", 1836 }, 1837 .get_pinmode = ave_pro4_get_pinmode, 1838 }; 1839 1840 static const struct ave_soc_data ave_pxs2_data = { 1841 .is_desc_64bit = false, 1842 .clock_names = { 1843 "ether", 1844 }, 1845 .reset_names = { 1846 "ether", 1847 }, 1848 .get_pinmode = ave_pro4_get_pinmode, 1849 }; 1850 1851 static const struct ave_soc_data ave_ld11_data = { 1852 .is_desc_64bit = false, 1853 .clock_names = { 1854 "ether", 1855 }, 1856 .reset_names = { 1857 "ether", 1858 }, 1859 .get_pinmode = ave_ld11_get_pinmode, 1860 }; 1861 1862 static const struct ave_soc_data ave_ld20_data = { 1863 .is_desc_64bit = true, 1864 .clock_names = { 1865 "ether", 1866 }, 1867 .reset_names = { 1868 "ether", 1869 }, 1870 .get_pinmode = ave_ld20_get_pinmode, 1871 }; 1872 1873 static const struct ave_soc_data ave_pxs3_data = { 1874 .is_desc_64bit = false, 1875 .clock_names = { 1876 "ether", 1877 }, 1878 .reset_names = { 1879 "ether", 1880 }, 1881 .get_pinmode = ave_pxs3_get_pinmode, 1882 }; 1883 1884 static const struct of_device_id of_ave_match[] = { 1885 { 1886 .compatible = "socionext,uniphier-pro4-ave4", 1887 .data = &ave_pro4_data, 1888 }, 1889 { 1890 .compatible = "socionext,uniphier-pxs2-ave4", 1891 .data = &ave_pxs2_data, 1892 }, 1893 { 1894 .compatible = "socionext,uniphier-ld11-ave4", 1895 .data = &ave_ld11_data, 1896 }, 1897 { 1898 .compatible = "socionext,uniphier-ld20-ave4", 1899 .data = &ave_ld20_data, 1900 }, 1901 { 1902 .compatible = "socionext,uniphier-pxs3-ave4", 1903 .data = &ave_pxs3_data, 1904 }, 1905 { /* Sentinel */ } 1906 }; 1907 MODULE_DEVICE_TABLE(of, of_ave_match); 1908 1909 static struct platform_driver ave_driver = { 1910 .probe = ave_probe, 1911 .remove = ave_remove, 1912 .driver = { 1913 .name = "ave", 1914 .of_match_table = of_ave_match, 1915 }, 1916 }; 1917 module_platform_driver(ave_driver); 1918 1919 MODULE_DESCRIPTION("Socionext UniPhier AVE ethernet driver"); 1920 MODULE_LICENSE("GPL v2"); 1921