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 64 /* Tx descriptor */ 189 #define AVE_NR_RXDESC 256 /* 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 #define AVE_FRAME_HEADROOM 2 198 199 /* Parameter for interrupt */ 200 #define AVE_INTM_COUNT 20 201 #define AVE_FORCE_TXINTCNT 1 202 203 /* SG */ 204 #define SG_ETPINMODE 0x540 205 #define SG_ETPINMODE_EXTPHY BIT(1) /* for LD11 */ 206 #define SG_ETPINMODE_RMII(ins) BIT(ins) 207 208 #define IS_DESC_64BIT(p) ((p)->data->is_desc_64bit) 209 210 #define AVE_MAX_CLKS 4 211 #define AVE_MAX_RSTS 2 212 213 enum desc_id { 214 AVE_DESCID_RX, 215 AVE_DESCID_TX, 216 }; 217 218 enum desc_state { 219 AVE_DESC_RX_PERMIT, 220 AVE_DESC_RX_SUSPEND, 221 AVE_DESC_START, 222 AVE_DESC_STOP, 223 }; 224 225 struct ave_desc { 226 struct sk_buff *skbs; 227 dma_addr_t skbs_dma; 228 size_t skbs_dmalen; 229 }; 230 231 struct ave_desc_info { 232 u32 ndesc; /* number of descriptor */ 233 u32 daddr; /* start address of descriptor */ 234 u32 proc_idx; /* index of processing packet */ 235 u32 done_idx; /* index of processed packet */ 236 struct ave_desc *desc; /* skb info related descriptor */ 237 }; 238 239 struct ave_stats { 240 struct u64_stats_sync syncp; 241 u64 packets; 242 u64 bytes; 243 u64 errors; 244 u64 dropped; 245 u64 collisions; 246 u64 fifo_errors; 247 }; 248 249 struct ave_private { 250 void __iomem *base; 251 int irq; 252 int phy_id; 253 unsigned int desc_size; 254 u32 msg_enable; 255 int nclks; 256 struct clk *clk[AVE_MAX_CLKS]; 257 int nrsts; 258 struct reset_control *rst[AVE_MAX_RSTS]; 259 phy_interface_t phy_mode; 260 struct phy_device *phydev; 261 struct mii_bus *mdio; 262 struct regmap *regmap; 263 unsigned int pinmode_mask; 264 unsigned int pinmode_val; 265 u32 wolopts; 266 267 /* stats */ 268 struct ave_stats stats_rx; 269 struct ave_stats stats_tx; 270 271 /* NAPI support */ 272 struct net_device *ndev; 273 struct napi_struct napi_rx; 274 struct napi_struct napi_tx; 275 276 /* descriptor */ 277 struct ave_desc_info rx; 278 struct ave_desc_info tx; 279 280 /* flow control */ 281 int pause_auto; 282 int pause_rx; 283 int pause_tx; 284 285 const struct ave_soc_data *data; 286 }; 287 288 struct ave_soc_data { 289 bool is_desc_64bit; 290 const char *clock_names[AVE_MAX_CLKS]; 291 const char *reset_names[AVE_MAX_RSTS]; 292 int (*get_pinmode)(struct ave_private *priv, 293 phy_interface_t phy_mode, u32 arg); 294 }; 295 296 static u32 ave_desc_read(struct net_device *ndev, enum desc_id id, int entry, 297 int offset) 298 { 299 struct ave_private *priv = netdev_priv(ndev); 300 u32 addr; 301 302 addr = ((id == AVE_DESCID_TX) ? priv->tx.daddr : priv->rx.daddr) 303 + entry * priv->desc_size + offset; 304 305 return readl(priv->base + addr); 306 } 307 308 static u32 ave_desc_read_cmdsts(struct net_device *ndev, enum desc_id id, 309 int entry) 310 { 311 return ave_desc_read(ndev, id, entry, AVE_DESC_OFS_CMDSTS); 312 } 313 314 static void ave_desc_write(struct net_device *ndev, enum desc_id id, 315 int entry, int offset, u32 val) 316 { 317 struct ave_private *priv = netdev_priv(ndev); 318 u32 addr; 319 320 addr = ((id == AVE_DESCID_TX) ? priv->tx.daddr : priv->rx.daddr) 321 + entry * priv->desc_size + offset; 322 323 writel(val, priv->base + addr); 324 } 325 326 static void ave_desc_write_cmdsts(struct net_device *ndev, enum desc_id id, 327 int entry, u32 val) 328 { 329 ave_desc_write(ndev, id, entry, AVE_DESC_OFS_CMDSTS, val); 330 } 331 332 static void ave_desc_write_addr(struct net_device *ndev, enum desc_id id, 333 int entry, dma_addr_t paddr) 334 { 335 struct ave_private *priv = netdev_priv(ndev); 336 337 ave_desc_write(ndev, id, entry, AVE_DESC_OFS_ADDRL, 338 lower_32_bits(paddr)); 339 if (IS_DESC_64BIT(priv)) 340 ave_desc_write(ndev, id, 341 entry, AVE_DESC_OFS_ADDRU, 342 upper_32_bits(paddr)); 343 } 344 345 static u32 ave_irq_disable_all(struct net_device *ndev) 346 { 347 struct ave_private *priv = netdev_priv(ndev); 348 u32 ret; 349 350 ret = readl(priv->base + AVE_GIMR); 351 writel(0, priv->base + AVE_GIMR); 352 353 return ret; 354 } 355 356 static void ave_irq_restore(struct net_device *ndev, u32 val) 357 { 358 struct ave_private *priv = netdev_priv(ndev); 359 360 writel(val, priv->base + AVE_GIMR); 361 } 362 363 static void ave_irq_enable(struct net_device *ndev, u32 bitflag) 364 { 365 struct ave_private *priv = netdev_priv(ndev); 366 367 writel(readl(priv->base + AVE_GIMR) | bitflag, priv->base + AVE_GIMR); 368 writel(bitflag, priv->base + AVE_GISR); 369 } 370 371 static void ave_hw_write_macaddr(struct net_device *ndev, 372 const unsigned char *mac_addr, 373 int reg1, int reg2) 374 { 375 struct ave_private *priv = netdev_priv(ndev); 376 377 writel(mac_addr[0] | mac_addr[1] << 8 | 378 mac_addr[2] << 16 | mac_addr[3] << 24, priv->base + reg1); 379 writel(mac_addr[4] | mac_addr[5] << 8, priv->base + reg2); 380 } 381 382 static void ave_hw_read_version(struct net_device *ndev, char *buf, int len) 383 { 384 struct ave_private *priv = netdev_priv(ndev); 385 u32 major, minor, vr; 386 387 vr = readl(priv->base + AVE_VR); 388 major = (vr & GENMASK(15, 8)) >> 8; 389 minor = (vr & GENMASK(7, 0)); 390 snprintf(buf, len, "v%u.%u", major, minor); 391 } 392 393 static void ave_ethtool_get_drvinfo(struct net_device *ndev, 394 struct ethtool_drvinfo *info) 395 { 396 struct device *dev = ndev->dev.parent; 397 398 strlcpy(info->driver, dev->driver->name, sizeof(info->driver)); 399 strlcpy(info->bus_info, dev_name(dev), sizeof(info->bus_info)); 400 ave_hw_read_version(ndev, info->fw_version, sizeof(info->fw_version)); 401 } 402 403 static u32 ave_ethtool_get_msglevel(struct net_device *ndev) 404 { 405 struct ave_private *priv = netdev_priv(ndev); 406 407 return priv->msg_enable; 408 } 409 410 static void ave_ethtool_set_msglevel(struct net_device *ndev, u32 val) 411 { 412 struct ave_private *priv = netdev_priv(ndev); 413 414 priv->msg_enable = val; 415 } 416 417 static void ave_ethtool_get_wol(struct net_device *ndev, 418 struct ethtool_wolinfo *wol) 419 { 420 wol->supported = 0; 421 wol->wolopts = 0; 422 423 if (ndev->phydev) 424 phy_ethtool_get_wol(ndev->phydev, wol); 425 } 426 427 static int __ave_ethtool_set_wol(struct net_device *ndev, 428 struct ethtool_wolinfo *wol) 429 { 430 if (!ndev->phydev || 431 (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE))) 432 return -EOPNOTSUPP; 433 434 return phy_ethtool_set_wol(ndev->phydev, wol); 435 } 436 437 static int ave_ethtool_set_wol(struct net_device *ndev, 438 struct ethtool_wolinfo *wol) 439 { 440 int ret; 441 442 ret = __ave_ethtool_set_wol(ndev, wol); 443 if (!ret) 444 device_set_wakeup_enable(&ndev->dev, !!wol->wolopts); 445 446 return ret; 447 } 448 449 static void ave_ethtool_get_pauseparam(struct net_device *ndev, 450 struct ethtool_pauseparam *pause) 451 { 452 struct ave_private *priv = netdev_priv(ndev); 453 454 pause->autoneg = priv->pause_auto; 455 pause->rx_pause = priv->pause_rx; 456 pause->tx_pause = priv->pause_tx; 457 } 458 459 static int ave_ethtool_set_pauseparam(struct net_device *ndev, 460 struct ethtool_pauseparam *pause) 461 { 462 struct ave_private *priv = netdev_priv(ndev); 463 struct phy_device *phydev = ndev->phydev; 464 465 if (!phydev) 466 return -EINVAL; 467 468 priv->pause_auto = pause->autoneg; 469 priv->pause_rx = pause->rx_pause; 470 priv->pause_tx = pause->tx_pause; 471 472 phy_set_asym_pause(phydev, pause->rx_pause, pause->tx_pause); 473 474 return 0; 475 } 476 477 static const struct ethtool_ops ave_ethtool_ops = { 478 .get_link_ksettings = phy_ethtool_get_link_ksettings, 479 .set_link_ksettings = phy_ethtool_set_link_ksettings, 480 .get_drvinfo = ave_ethtool_get_drvinfo, 481 .nway_reset = phy_ethtool_nway_reset, 482 .get_link = ethtool_op_get_link, 483 .get_msglevel = ave_ethtool_get_msglevel, 484 .set_msglevel = ave_ethtool_set_msglevel, 485 .get_wol = ave_ethtool_get_wol, 486 .set_wol = ave_ethtool_set_wol, 487 .get_pauseparam = ave_ethtool_get_pauseparam, 488 .set_pauseparam = ave_ethtool_set_pauseparam, 489 }; 490 491 static int ave_mdiobus_read(struct mii_bus *bus, int phyid, int regnum) 492 { 493 struct net_device *ndev = bus->priv; 494 struct ave_private *priv; 495 u32 mdioctl, mdiosr; 496 int ret; 497 498 priv = netdev_priv(ndev); 499 500 /* write address */ 501 writel((phyid << 8) | regnum, priv->base + AVE_MDIOAR); 502 503 /* read request */ 504 mdioctl = readl(priv->base + AVE_MDIOCTR); 505 writel((mdioctl | AVE_MDIOCTR_RREQ) & ~AVE_MDIOCTR_WREQ, 506 priv->base + AVE_MDIOCTR); 507 508 ret = readl_poll_timeout(priv->base + AVE_MDIOSR, mdiosr, 509 !(mdiosr & AVE_MDIOSR_STS), 20, 2000); 510 if (ret) { 511 netdev_err(ndev, "failed to read (phy:%d reg:%x)\n", 512 phyid, regnum); 513 return ret; 514 } 515 516 return readl(priv->base + AVE_MDIORDR) & GENMASK(15, 0); 517 } 518 519 static int ave_mdiobus_write(struct mii_bus *bus, int phyid, int regnum, 520 u16 val) 521 { 522 struct net_device *ndev = bus->priv; 523 struct ave_private *priv; 524 u32 mdioctl, mdiosr; 525 int ret; 526 527 priv = netdev_priv(ndev); 528 529 /* write address */ 530 writel((phyid << 8) | regnum, priv->base + AVE_MDIOAR); 531 532 /* write data */ 533 writel(val, priv->base + AVE_MDIOWDR); 534 535 /* write request */ 536 mdioctl = readl(priv->base + AVE_MDIOCTR); 537 writel((mdioctl | AVE_MDIOCTR_WREQ) & ~AVE_MDIOCTR_RREQ, 538 priv->base + AVE_MDIOCTR); 539 540 ret = readl_poll_timeout(priv->base + AVE_MDIOSR, mdiosr, 541 !(mdiosr & AVE_MDIOSR_STS), 20, 2000); 542 if (ret) 543 netdev_err(ndev, "failed to write (phy:%d reg:%x)\n", 544 phyid, regnum); 545 546 return ret; 547 } 548 549 static int ave_dma_map(struct net_device *ndev, struct ave_desc *desc, 550 void *ptr, size_t len, enum dma_data_direction dir, 551 dma_addr_t *paddr) 552 { 553 dma_addr_t map_addr; 554 555 map_addr = dma_map_single(ndev->dev.parent, ptr, len, dir); 556 if (unlikely(dma_mapping_error(ndev->dev.parent, map_addr))) 557 return -ENOMEM; 558 559 desc->skbs_dma = map_addr; 560 desc->skbs_dmalen = len; 561 *paddr = map_addr; 562 563 return 0; 564 } 565 566 static void ave_dma_unmap(struct net_device *ndev, struct ave_desc *desc, 567 enum dma_data_direction dir) 568 { 569 if (!desc->skbs_dma) 570 return; 571 572 dma_unmap_single(ndev->dev.parent, 573 desc->skbs_dma, desc->skbs_dmalen, dir); 574 desc->skbs_dma = 0; 575 } 576 577 /* Prepare Rx descriptor and memory */ 578 static int ave_rxdesc_prepare(struct net_device *ndev, int entry) 579 { 580 struct ave_private *priv = netdev_priv(ndev); 581 struct sk_buff *skb; 582 dma_addr_t paddr; 583 int ret; 584 585 skb = priv->rx.desc[entry].skbs; 586 if (!skb) { 587 skb = netdev_alloc_skb(ndev, AVE_MAX_ETHFRAME); 588 if (!skb) { 589 netdev_err(ndev, "can't allocate skb for Rx\n"); 590 return -ENOMEM; 591 } 592 skb->data += AVE_FRAME_HEADROOM; 593 skb->tail += AVE_FRAME_HEADROOM; 594 } 595 596 /* set disable to cmdsts */ 597 ave_desc_write_cmdsts(ndev, AVE_DESCID_RX, entry, 598 AVE_STS_INTR | AVE_STS_OWN); 599 600 /* map Rx buffer 601 * Rx buffer set to the Rx descriptor has two restrictions: 602 * - Rx buffer address is 4 byte aligned. 603 * - Rx buffer begins with 2 byte headroom, and data will be put from 604 * (buffer + 2). 605 * To satisfy this, specify the address to put back the buffer 606 * pointer advanced by AVE_FRAME_HEADROOM, and expand the map size 607 * by AVE_FRAME_HEADROOM. 608 */ 609 ret = ave_dma_map(ndev, &priv->rx.desc[entry], 610 skb->data - AVE_FRAME_HEADROOM, 611 AVE_MAX_ETHFRAME + AVE_FRAME_HEADROOM, 612 DMA_FROM_DEVICE, &paddr); 613 if (ret) { 614 netdev_err(ndev, "can't map skb for Rx\n"); 615 dev_kfree_skb_any(skb); 616 return ret; 617 } 618 priv->rx.desc[entry].skbs = skb; 619 620 /* set buffer pointer */ 621 ave_desc_write_addr(ndev, AVE_DESCID_RX, entry, paddr); 622 623 /* set enable to cmdsts */ 624 ave_desc_write_cmdsts(ndev, AVE_DESCID_RX, entry, 625 AVE_STS_INTR | AVE_MAX_ETHFRAME); 626 627 return ret; 628 } 629 630 /* Switch state of descriptor */ 631 static int ave_desc_switch(struct net_device *ndev, enum desc_state state) 632 { 633 struct ave_private *priv = netdev_priv(ndev); 634 int ret = 0; 635 u32 val; 636 637 switch (state) { 638 case AVE_DESC_START: 639 writel(AVE_DESCC_TD | AVE_DESCC_RD0, priv->base + AVE_DESCC); 640 break; 641 642 case AVE_DESC_STOP: 643 writel(0, priv->base + AVE_DESCC); 644 if (readl_poll_timeout(priv->base + AVE_DESCC, val, !val, 645 150, 15000)) { 646 netdev_err(ndev, "can't stop descriptor\n"); 647 ret = -EBUSY; 648 } 649 break; 650 651 case AVE_DESC_RX_SUSPEND: 652 val = readl(priv->base + AVE_DESCC); 653 val |= AVE_DESCC_RDSTP; 654 val &= ~AVE_DESCC_STATUS_MASK; 655 writel(val, priv->base + AVE_DESCC); 656 if (readl_poll_timeout(priv->base + AVE_DESCC, val, 657 val & (AVE_DESCC_RDSTP << 16), 658 150, 150000)) { 659 netdev_err(ndev, "can't suspend descriptor\n"); 660 ret = -EBUSY; 661 } 662 break; 663 664 case AVE_DESC_RX_PERMIT: 665 val = readl(priv->base + AVE_DESCC); 666 val &= ~AVE_DESCC_RDSTP; 667 val &= ~AVE_DESCC_STATUS_MASK; 668 writel(val, priv->base + AVE_DESCC); 669 break; 670 671 default: 672 ret = -EINVAL; 673 break; 674 } 675 676 return ret; 677 } 678 679 static int ave_tx_complete(struct net_device *ndev) 680 { 681 struct ave_private *priv = netdev_priv(ndev); 682 u32 proc_idx, done_idx, ndesc, cmdsts; 683 unsigned int nr_freebuf = 0; 684 unsigned int tx_packets = 0; 685 unsigned int tx_bytes = 0; 686 687 proc_idx = priv->tx.proc_idx; 688 done_idx = priv->tx.done_idx; 689 ndesc = priv->tx.ndesc; 690 691 /* free pre-stored skb from done_idx to proc_idx */ 692 while (proc_idx != done_idx) { 693 cmdsts = ave_desc_read_cmdsts(ndev, AVE_DESCID_TX, done_idx); 694 695 /* do nothing if owner is HW (==1 for Tx) */ 696 if (cmdsts & AVE_STS_OWN) 697 break; 698 699 /* check Tx status and updates statistics */ 700 if (cmdsts & AVE_STS_OK) { 701 tx_bytes += cmdsts & AVE_STS_PKTLEN_TX_MASK; 702 /* success */ 703 if (cmdsts & AVE_STS_LAST) 704 tx_packets++; 705 } else { 706 /* error */ 707 if (cmdsts & AVE_STS_LAST) { 708 priv->stats_tx.errors++; 709 if (cmdsts & (AVE_STS_OWC | AVE_STS_EC)) 710 priv->stats_tx.collisions++; 711 } 712 } 713 714 /* release skb */ 715 if (priv->tx.desc[done_idx].skbs) { 716 ave_dma_unmap(ndev, &priv->tx.desc[done_idx], 717 DMA_TO_DEVICE); 718 dev_consume_skb_any(priv->tx.desc[done_idx].skbs); 719 priv->tx.desc[done_idx].skbs = NULL; 720 nr_freebuf++; 721 } 722 done_idx = (done_idx + 1) % ndesc; 723 } 724 725 priv->tx.done_idx = done_idx; 726 727 /* update stats */ 728 u64_stats_update_begin(&priv->stats_tx.syncp); 729 priv->stats_tx.packets += tx_packets; 730 priv->stats_tx.bytes += tx_bytes; 731 u64_stats_update_end(&priv->stats_tx.syncp); 732 733 /* wake queue for freeing buffer */ 734 if (unlikely(netif_queue_stopped(ndev)) && nr_freebuf) 735 netif_wake_queue(ndev); 736 737 return nr_freebuf; 738 } 739 740 static int ave_rx_receive(struct net_device *ndev, int num) 741 { 742 struct ave_private *priv = netdev_priv(ndev); 743 unsigned int rx_packets = 0; 744 unsigned int rx_bytes = 0; 745 u32 proc_idx, done_idx; 746 struct sk_buff *skb; 747 unsigned int pktlen; 748 int restpkt, npkts; 749 u32 ndesc, cmdsts; 750 751 proc_idx = priv->rx.proc_idx; 752 done_idx = priv->rx.done_idx; 753 ndesc = priv->rx.ndesc; 754 restpkt = ((proc_idx + ndesc - 1) - done_idx) % ndesc; 755 756 for (npkts = 0; npkts < num; npkts++) { 757 /* we can't receive more packet, so fill desc quickly */ 758 if (--restpkt < 0) 759 break; 760 761 cmdsts = ave_desc_read_cmdsts(ndev, AVE_DESCID_RX, proc_idx); 762 763 /* do nothing if owner is HW (==0 for Rx) */ 764 if (!(cmdsts & AVE_STS_OWN)) 765 break; 766 767 if (!(cmdsts & AVE_STS_OK)) { 768 priv->stats_rx.errors++; 769 proc_idx = (proc_idx + 1) % ndesc; 770 continue; 771 } 772 773 pktlen = cmdsts & AVE_STS_PKTLEN_RX_MASK; 774 775 /* get skbuff for rx */ 776 skb = priv->rx.desc[proc_idx].skbs; 777 priv->rx.desc[proc_idx].skbs = NULL; 778 779 ave_dma_unmap(ndev, &priv->rx.desc[proc_idx], DMA_FROM_DEVICE); 780 781 skb->dev = ndev; 782 skb_put(skb, pktlen); 783 skb->protocol = eth_type_trans(skb, ndev); 784 785 if ((cmdsts & AVE_STS_CSSV) && (!(cmdsts & AVE_STS_CSER))) 786 skb->ip_summed = CHECKSUM_UNNECESSARY; 787 788 rx_packets++; 789 rx_bytes += pktlen; 790 791 netif_receive_skb(skb); 792 793 proc_idx = (proc_idx + 1) % ndesc; 794 } 795 796 priv->rx.proc_idx = proc_idx; 797 798 /* update stats */ 799 u64_stats_update_begin(&priv->stats_rx.syncp); 800 priv->stats_rx.packets += rx_packets; 801 priv->stats_rx.bytes += rx_bytes; 802 u64_stats_update_end(&priv->stats_rx.syncp); 803 804 /* refill the Rx buffers */ 805 while (proc_idx != done_idx) { 806 if (ave_rxdesc_prepare(ndev, done_idx)) 807 break; 808 done_idx = (done_idx + 1) % ndesc; 809 } 810 811 priv->rx.done_idx = done_idx; 812 813 return npkts; 814 } 815 816 static int ave_napi_poll_rx(struct napi_struct *napi, int budget) 817 { 818 struct ave_private *priv; 819 struct net_device *ndev; 820 int num; 821 822 priv = container_of(napi, struct ave_private, napi_rx); 823 ndev = priv->ndev; 824 825 num = ave_rx_receive(ndev, budget); 826 if (num < budget) { 827 napi_complete_done(napi, num); 828 829 /* enable Rx interrupt when NAPI finishes */ 830 ave_irq_enable(ndev, AVE_GI_RXIINT); 831 } 832 833 return num; 834 } 835 836 static int ave_napi_poll_tx(struct napi_struct *napi, int budget) 837 { 838 struct ave_private *priv; 839 struct net_device *ndev; 840 int num; 841 842 priv = container_of(napi, struct ave_private, napi_tx); 843 ndev = priv->ndev; 844 845 num = ave_tx_complete(ndev); 846 napi_complete(napi); 847 848 /* enable Tx interrupt when NAPI finishes */ 849 ave_irq_enable(ndev, AVE_GI_TX); 850 851 return num; 852 } 853 854 static void ave_global_reset(struct net_device *ndev) 855 { 856 struct ave_private *priv = netdev_priv(ndev); 857 u32 val; 858 859 /* set config register */ 860 val = AVE_CFGR_FLE | AVE_CFGR_IPFCEN | AVE_CFGR_CHE; 861 if (!phy_interface_mode_is_rgmii(priv->phy_mode)) 862 val |= AVE_CFGR_MII; 863 writel(val, priv->base + AVE_CFGR); 864 865 /* reset RMII register */ 866 val = readl(priv->base + AVE_RSTCTRL); 867 val &= ~AVE_RSTCTRL_RMIIRST; 868 writel(val, priv->base + AVE_RSTCTRL); 869 870 /* assert reset */ 871 writel(AVE_GRR_GRST | AVE_GRR_PHYRST, priv->base + AVE_GRR); 872 msleep(20); 873 874 /* 1st, negate PHY reset only */ 875 writel(AVE_GRR_GRST, priv->base + AVE_GRR); 876 msleep(40); 877 878 /* negate reset */ 879 writel(0, priv->base + AVE_GRR); 880 msleep(40); 881 882 /* negate RMII register */ 883 val = readl(priv->base + AVE_RSTCTRL); 884 val |= AVE_RSTCTRL_RMIIRST; 885 writel(val, priv->base + AVE_RSTCTRL); 886 887 ave_irq_disable_all(ndev); 888 } 889 890 static void ave_rxfifo_reset(struct net_device *ndev) 891 { 892 struct ave_private *priv = netdev_priv(ndev); 893 u32 rxcr_org; 894 895 /* save and disable MAC receive op */ 896 rxcr_org = readl(priv->base + AVE_RXCR); 897 writel(rxcr_org & (~AVE_RXCR_RXEN), priv->base + AVE_RXCR); 898 899 /* suspend Rx descriptor */ 900 ave_desc_switch(ndev, AVE_DESC_RX_SUSPEND); 901 902 /* receive all packets before descriptor starts */ 903 ave_rx_receive(ndev, priv->rx.ndesc); 904 905 /* assert reset */ 906 writel(AVE_GRR_RXFFR, priv->base + AVE_GRR); 907 udelay(50); 908 909 /* negate reset */ 910 writel(0, priv->base + AVE_GRR); 911 udelay(20); 912 913 /* negate interrupt status */ 914 writel(AVE_GI_RXOVF, priv->base + AVE_GISR); 915 916 /* permit descriptor */ 917 ave_desc_switch(ndev, AVE_DESC_RX_PERMIT); 918 919 /* restore MAC reccieve op */ 920 writel(rxcr_org, priv->base + AVE_RXCR); 921 } 922 923 static irqreturn_t ave_irq_handler(int irq, void *netdev) 924 { 925 struct net_device *ndev = (struct net_device *)netdev; 926 struct ave_private *priv = netdev_priv(ndev); 927 u32 gimr_val, gisr_val; 928 929 gimr_val = ave_irq_disable_all(ndev); 930 931 /* get interrupt status */ 932 gisr_val = readl(priv->base + AVE_GISR); 933 934 /* PHY */ 935 if (gisr_val & AVE_GI_PHY) 936 writel(AVE_GI_PHY, priv->base + AVE_GISR); 937 938 /* check exceeding packet */ 939 if (gisr_val & AVE_GI_RXERR) { 940 writel(AVE_GI_RXERR, priv->base + AVE_GISR); 941 netdev_err(ndev, "receive a packet exceeding frame buffer\n"); 942 } 943 944 gisr_val &= gimr_val; 945 if (!gisr_val) 946 goto exit_isr; 947 948 /* RxFIFO overflow */ 949 if (gisr_val & AVE_GI_RXOVF) { 950 priv->stats_rx.fifo_errors++; 951 ave_rxfifo_reset(ndev); 952 goto exit_isr; 953 } 954 955 /* Rx drop */ 956 if (gisr_val & AVE_GI_RXDROP) { 957 priv->stats_rx.dropped++; 958 writel(AVE_GI_RXDROP, priv->base + AVE_GISR); 959 } 960 961 /* Rx interval */ 962 if (gisr_val & AVE_GI_RXIINT) { 963 napi_schedule(&priv->napi_rx); 964 /* still force to disable Rx interrupt until NAPI finishes */ 965 gimr_val &= ~AVE_GI_RXIINT; 966 } 967 968 /* Tx completed */ 969 if (gisr_val & AVE_GI_TX) { 970 napi_schedule(&priv->napi_tx); 971 /* still force to disable Tx interrupt until NAPI finishes */ 972 gimr_val &= ~AVE_GI_TX; 973 } 974 975 exit_isr: 976 ave_irq_restore(ndev, gimr_val); 977 978 return IRQ_HANDLED; 979 } 980 981 static int ave_pfsel_start(struct net_device *ndev, unsigned int entry) 982 { 983 struct ave_private *priv = netdev_priv(ndev); 984 u32 val; 985 986 if (WARN_ON(entry > AVE_PF_SIZE)) 987 return -EINVAL; 988 989 val = readl(priv->base + AVE_PFEN); 990 writel(val | BIT(entry), priv->base + AVE_PFEN); 991 992 return 0; 993 } 994 995 static int ave_pfsel_stop(struct net_device *ndev, unsigned int entry) 996 { 997 struct ave_private *priv = netdev_priv(ndev); 998 u32 val; 999 1000 if (WARN_ON(entry > AVE_PF_SIZE)) 1001 return -EINVAL; 1002 1003 val = readl(priv->base + AVE_PFEN); 1004 writel(val & ~BIT(entry), priv->base + AVE_PFEN); 1005 1006 return 0; 1007 } 1008 1009 static int ave_pfsel_set_macaddr(struct net_device *ndev, 1010 unsigned int entry, 1011 const unsigned char *mac_addr, 1012 unsigned int set_size) 1013 { 1014 struct ave_private *priv = netdev_priv(ndev); 1015 1016 if (WARN_ON(entry > AVE_PF_SIZE)) 1017 return -EINVAL; 1018 if (WARN_ON(set_size > 6)) 1019 return -EINVAL; 1020 1021 ave_pfsel_stop(ndev, entry); 1022 1023 /* set MAC address for the filter */ 1024 ave_hw_write_macaddr(ndev, mac_addr, 1025 AVE_PKTF(entry), AVE_PKTF(entry) + 4); 1026 1027 /* set byte mask */ 1028 writel(GENMASK(31, set_size) & AVE_PFMBYTE_MASK0, 1029 priv->base + AVE_PFMBYTE(entry)); 1030 writel(AVE_PFMBYTE_MASK1, priv->base + AVE_PFMBYTE(entry) + 4); 1031 1032 /* set bit mask filter */ 1033 writel(AVE_PFMBIT_MASK, priv->base + AVE_PFMBIT(entry)); 1034 1035 /* set selector to ring 0 */ 1036 writel(0, priv->base + AVE_PFSEL(entry)); 1037 1038 /* restart filter */ 1039 ave_pfsel_start(ndev, entry); 1040 1041 return 0; 1042 } 1043 1044 static void ave_pfsel_set_promisc(struct net_device *ndev, 1045 unsigned int entry, u32 rxring) 1046 { 1047 struct ave_private *priv = netdev_priv(ndev); 1048 1049 if (WARN_ON(entry > AVE_PF_SIZE)) 1050 return; 1051 1052 ave_pfsel_stop(ndev, entry); 1053 1054 /* set byte mask */ 1055 writel(AVE_PFMBYTE_MASK0, priv->base + AVE_PFMBYTE(entry)); 1056 writel(AVE_PFMBYTE_MASK1, priv->base + AVE_PFMBYTE(entry) + 4); 1057 1058 /* set bit mask filter */ 1059 writel(AVE_PFMBIT_MASK, priv->base + AVE_PFMBIT(entry)); 1060 1061 /* set selector to rxring */ 1062 writel(rxring, priv->base + AVE_PFSEL(entry)); 1063 1064 ave_pfsel_start(ndev, entry); 1065 } 1066 1067 static void ave_pfsel_init(struct net_device *ndev) 1068 { 1069 unsigned char bcast_mac[ETH_ALEN]; 1070 int i; 1071 1072 eth_broadcast_addr(bcast_mac); 1073 1074 for (i = 0; i < AVE_PF_SIZE; i++) 1075 ave_pfsel_stop(ndev, i); 1076 1077 /* promiscious entry, select ring 0 */ 1078 ave_pfsel_set_promisc(ndev, AVE_PFNUM_FILTER, 0); 1079 1080 /* unicast entry */ 1081 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_UNICAST, ndev->dev_addr, 6); 1082 1083 /* broadcast entry */ 1084 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_BROADCAST, bcast_mac, 6); 1085 } 1086 1087 static void ave_phy_adjust_link(struct net_device *ndev) 1088 { 1089 struct ave_private *priv = netdev_priv(ndev); 1090 struct phy_device *phydev = ndev->phydev; 1091 u32 val, txcr, rxcr, rxcr_org; 1092 u16 rmt_adv = 0, lcl_adv = 0; 1093 u8 cap; 1094 1095 /* set RGMII speed */ 1096 val = readl(priv->base + AVE_TXCR); 1097 val &= ~(AVE_TXCR_TXSPD_100 | AVE_TXCR_TXSPD_1G); 1098 1099 if (phy_interface_is_rgmii(phydev) && phydev->speed == SPEED_1000) 1100 val |= AVE_TXCR_TXSPD_1G; 1101 else if (phydev->speed == SPEED_100) 1102 val |= AVE_TXCR_TXSPD_100; 1103 1104 writel(val, priv->base + AVE_TXCR); 1105 1106 /* set RMII speed (100M/10M only) */ 1107 if (!phy_interface_is_rgmii(phydev)) { 1108 val = readl(priv->base + AVE_LINKSEL); 1109 if (phydev->speed == SPEED_10) 1110 val &= ~AVE_LINKSEL_100M; 1111 else 1112 val |= AVE_LINKSEL_100M; 1113 writel(val, priv->base + AVE_LINKSEL); 1114 } 1115 1116 /* check current RXCR/TXCR */ 1117 rxcr = readl(priv->base + AVE_RXCR); 1118 txcr = readl(priv->base + AVE_TXCR); 1119 rxcr_org = rxcr; 1120 1121 if (phydev->duplex) { 1122 rxcr |= AVE_RXCR_FDUPEN; 1123 1124 if (phydev->pause) 1125 rmt_adv |= LPA_PAUSE_CAP; 1126 if (phydev->asym_pause) 1127 rmt_adv |= LPA_PAUSE_ASYM; 1128 1129 lcl_adv = linkmode_adv_to_lcl_adv_t(phydev->advertising); 1130 cap = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); 1131 if (cap & FLOW_CTRL_TX) 1132 txcr |= AVE_TXCR_FLOCTR; 1133 else 1134 txcr &= ~AVE_TXCR_FLOCTR; 1135 if (cap & FLOW_CTRL_RX) 1136 rxcr |= AVE_RXCR_FLOCTR; 1137 else 1138 rxcr &= ~AVE_RXCR_FLOCTR; 1139 } else { 1140 rxcr &= ~AVE_RXCR_FDUPEN; 1141 rxcr &= ~AVE_RXCR_FLOCTR; 1142 txcr &= ~AVE_TXCR_FLOCTR; 1143 } 1144 1145 if (rxcr_org != rxcr) { 1146 /* disable Rx mac */ 1147 writel(rxcr & ~AVE_RXCR_RXEN, priv->base + AVE_RXCR); 1148 /* change and enable TX/Rx mac */ 1149 writel(txcr, priv->base + AVE_TXCR); 1150 writel(rxcr, priv->base + AVE_RXCR); 1151 } 1152 1153 phy_print_status(phydev); 1154 } 1155 1156 static void ave_macaddr_init(struct net_device *ndev) 1157 { 1158 ave_hw_write_macaddr(ndev, ndev->dev_addr, AVE_RXMAC1R, AVE_RXMAC2R); 1159 1160 /* pfsel unicast entry */ 1161 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_UNICAST, ndev->dev_addr, 6); 1162 } 1163 1164 static int ave_init(struct net_device *ndev) 1165 { 1166 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; 1167 struct ave_private *priv = netdev_priv(ndev); 1168 struct device *dev = ndev->dev.parent; 1169 struct device_node *np = dev->of_node; 1170 struct device_node *mdio_np; 1171 struct phy_device *phydev; 1172 int nc, nr, ret; 1173 1174 /* enable clk because of hw access until ndo_open */ 1175 for (nc = 0; nc < priv->nclks; nc++) { 1176 ret = clk_prepare_enable(priv->clk[nc]); 1177 if (ret) { 1178 dev_err(dev, "can't enable clock\n"); 1179 goto out_clk_disable; 1180 } 1181 } 1182 1183 for (nr = 0; nr < priv->nrsts; nr++) { 1184 ret = reset_control_deassert(priv->rst[nr]); 1185 if (ret) { 1186 dev_err(dev, "can't deassert reset\n"); 1187 goto out_reset_assert; 1188 } 1189 } 1190 1191 ret = regmap_update_bits(priv->regmap, SG_ETPINMODE, 1192 priv->pinmode_mask, priv->pinmode_val); 1193 if (ret) 1194 goto out_reset_assert; 1195 1196 ave_global_reset(ndev); 1197 1198 mdio_np = of_get_child_by_name(np, "mdio"); 1199 if (!mdio_np) { 1200 dev_err(dev, "mdio node not found\n"); 1201 ret = -EINVAL; 1202 goto out_reset_assert; 1203 } 1204 ret = of_mdiobus_register(priv->mdio, mdio_np); 1205 of_node_put(mdio_np); 1206 if (ret) { 1207 dev_err(dev, "failed to register mdiobus\n"); 1208 goto out_reset_assert; 1209 } 1210 1211 phydev = of_phy_get_and_connect(ndev, np, ave_phy_adjust_link); 1212 if (!phydev) { 1213 dev_err(dev, "could not attach to PHY\n"); 1214 ret = -ENODEV; 1215 goto out_mdio_unregister; 1216 } 1217 1218 priv->phydev = phydev; 1219 1220 ave_ethtool_get_wol(ndev, &wol); 1221 device_set_wakeup_capable(&ndev->dev, !!wol.supported); 1222 1223 /* set wol initial state disabled */ 1224 wol.wolopts = 0; 1225 __ave_ethtool_set_wol(ndev, &wol); 1226 1227 if (!phy_interface_is_rgmii(phydev)) 1228 phy_set_max_speed(phydev, SPEED_100); 1229 1230 phy_support_asym_pause(phydev); 1231 1232 phy_attached_info(phydev); 1233 1234 return 0; 1235 1236 out_mdio_unregister: 1237 mdiobus_unregister(priv->mdio); 1238 out_reset_assert: 1239 while (--nr >= 0) 1240 reset_control_assert(priv->rst[nr]); 1241 out_clk_disable: 1242 while (--nc >= 0) 1243 clk_disable_unprepare(priv->clk[nc]); 1244 1245 return ret; 1246 } 1247 1248 static void ave_uninit(struct net_device *ndev) 1249 { 1250 struct ave_private *priv = netdev_priv(ndev); 1251 int i; 1252 1253 phy_disconnect(priv->phydev); 1254 mdiobus_unregister(priv->mdio); 1255 1256 /* disable clk because of hw access after ndo_stop */ 1257 for (i = 0; i < priv->nrsts; i++) 1258 reset_control_assert(priv->rst[i]); 1259 for (i = 0; i < priv->nclks; i++) 1260 clk_disable_unprepare(priv->clk[i]); 1261 } 1262 1263 static int ave_open(struct net_device *ndev) 1264 { 1265 struct ave_private *priv = netdev_priv(ndev); 1266 int entry; 1267 int ret; 1268 u32 val; 1269 1270 ret = request_irq(priv->irq, ave_irq_handler, IRQF_SHARED, ndev->name, 1271 ndev); 1272 if (ret) 1273 return ret; 1274 1275 priv->tx.desc = kcalloc(priv->tx.ndesc, sizeof(*priv->tx.desc), 1276 GFP_KERNEL); 1277 if (!priv->tx.desc) { 1278 ret = -ENOMEM; 1279 goto out_free_irq; 1280 } 1281 1282 priv->rx.desc = kcalloc(priv->rx.ndesc, sizeof(*priv->rx.desc), 1283 GFP_KERNEL); 1284 if (!priv->rx.desc) { 1285 kfree(priv->tx.desc); 1286 ret = -ENOMEM; 1287 goto out_free_irq; 1288 } 1289 1290 /* initialize Tx work and descriptor */ 1291 priv->tx.proc_idx = 0; 1292 priv->tx.done_idx = 0; 1293 for (entry = 0; entry < priv->tx.ndesc; entry++) { 1294 ave_desc_write_cmdsts(ndev, AVE_DESCID_TX, entry, 0); 1295 ave_desc_write_addr(ndev, AVE_DESCID_TX, entry, 0); 1296 } 1297 writel(AVE_TXDC_ADDR_START | 1298 (((priv->tx.ndesc * priv->desc_size) << 16) & AVE_TXDC_SIZE), 1299 priv->base + AVE_TXDC); 1300 1301 /* initialize Rx work and descriptor */ 1302 priv->rx.proc_idx = 0; 1303 priv->rx.done_idx = 0; 1304 for (entry = 0; entry < priv->rx.ndesc; entry++) { 1305 if (ave_rxdesc_prepare(ndev, entry)) 1306 break; 1307 } 1308 writel(AVE_RXDC0_ADDR_START | 1309 (((priv->rx.ndesc * priv->desc_size) << 16) & AVE_RXDC0_SIZE), 1310 priv->base + AVE_RXDC0); 1311 1312 ave_desc_switch(ndev, AVE_DESC_START); 1313 1314 ave_pfsel_init(ndev); 1315 ave_macaddr_init(ndev); 1316 1317 /* set Rx configuration */ 1318 /* full duplex, enable pause drop, enalbe flow control */ 1319 val = AVE_RXCR_RXEN | AVE_RXCR_FDUPEN | AVE_RXCR_DRPEN | 1320 AVE_RXCR_FLOCTR | (AVE_MAX_ETHFRAME & AVE_RXCR_MPSIZ_MASK); 1321 writel(val, priv->base + AVE_RXCR); 1322 1323 /* set Tx configuration */ 1324 /* enable flow control, disable loopback */ 1325 writel(AVE_TXCR_FLOCTR, priv->base + AVE_TXCR); 1326 1327 /* enable timer, clear EN,INTM, and mask interval unit(BSCK) */ 1328 val = readl(priv->base + AVE_IIRQC) & AVE_IIRQC_BSCK; 1329 val |= AVE_IIRQC_EN0 | (AVE_INTM_COUNT << 16); 1330 writel(val, priv->base + AVE_IIRQC); 1331 1332 val = AVE_GI_RXIINT | AVE_GI_RXOVF | AVE_GI_TX | AVE_GI_RXDROP; 1333 ave_irq_restore(ndev, val); 1334 1335 napi_enable(&priv->napi_rx); 1336 napi_enable(&priv->napi_tx); 1337 1338 phy_start(ndev->phydev); 1339 phy_start_aneg(ndev->phydev); 1340 netif_start_queue(ndev); 1341 1342 return 0; 1343 1344 out_free_irq: 1345 disable_irq(priv->irq); 1346 free_irq(priv->irq, ndev); 1347 1348 return ret; 1349 } 1350 1351 static int ave_stop(struct net_device *ndev) 1352 { 1353 struct ave_private *priv = netdev_priv(ndev); 1354 int entry; 1355 1356 ave_irq_disable_all(ndev); 1357 disable_irq(priv->irq); 1358 free_irq(priv->irq, ndev); 1359 1360 netif_tx_disable(ndev); 1361 phy_stop(ndev->phydev); 1362 napi_disable(&priv->napi_tx); 1363 napi_disable(&priv->napi_rx); 1364 1365 ave_desc_switch(ndev, AVE_DESC_STOP); 1366 1367 /* free Tx buffer */ 1368 for (entry = 0; entry < priv->tx.ndesc; entry++) { 1369 if (!priv->tx.desc[entry].skbs) 1370 continue; 1371 1372 ave_dma_unmap(ndev, &priv->tx.desc[entry], DMA_TO_DEVICE); 1373 dev_kfree_skb_any(priv->tx.desc[entry].skbs); 1374 priv->tx.desc[entry].skbs = NULL; 1375 } 1376 priv->tx.proc_idx = 0; 1377 priv->tx.done_idx = 0; 1378 1379 /* free Rx buffer */ 1380 for (entry = 0; entry < priv->rx.ndesc; entry++) { 1381 if (!priv->rx.desc[entry].skbs) 1382 continue; 1383 1384 ave_dma_unmap(ndev, &priv->rx.desc[entry], DMA_FROM_DEVICE); 1385 dev_kfree_skb_any(priv->rx.desc[entry].skbs); 1386 priv->rx.desc[entry].skbs = NULL; 1387 } 1388 priv->rx.proc_idx = 0; 1389 priv->rx.done_idx = 0; 1390 1391 kfree(priv->tx.desc); 1392 kfree(priv->rx.desc); 1393 1394 return 0; 1395 } 1396 1397 static netdev_tx_t ave_start_xmit(struct sk_buff *skb, struct net_device *ndev) 1398 { 1399 struct ave_private *priv = netdev_priv(ndev); 1400 u32 proc_idx, done_idx, ndesc, cmdsts; 1401 int ret, freepkt; 1402 dma_addr_t paddr; 1403 1404 proc_idx = priv->tx.proc_idx; 1405 done_idx = priv->tx.done_idx; 1406 ndesc = priv->tx.ndesc; 1407 freepkt = ((done_idx + ndesc - 1) - proc_idx) % ndesc; 1408 1409 /* stop queue when not enough entry */ 1410 if (unlikely(freepkt < 1)) { 1411 netif_stop_queue(ndev); 1412 return NETDEV_TX_BUSY; 1413 } 1414 1415 /* add padding for short packet */ 1416 if (skb_put_padto(skb, ETH_ZLEN)) { 1417 priv->stats_tx.dropped++; 1418 return NETDEV_TX_OK; 1419 } 1420 1421 /* map Tx buffer 1422 * Tx buffer set to the Tx descriptor doesn't have any restriction. 1423 */ 1424 ret = ave_dma_map(ndev, &priv->tx.desc[proc_idx], 1425 skb->data, skb->len, DMA_TO_DEVICE, &paddr); 1426 if (ret) { 1427 dev_kfree_skb_any(skb); 1428 priv->stats_tx.dropped++; 1429 return NETDEV_TX_OK; 1430 } 1431 1432 priv->tx.desc[proc_idx].skbs = skb; 1433 1434 ave_desc_write_addr(ndev, AVE_DESCID_TX, proc_idx, paddr); 1435 1436 cmdsts = AVE_STS_OWN | AVE_STS_1ST | AVE_STS_LAST | 1437 (skb->len & AVE_STS_PKTLEN_TX_MASK); 1438 1439 /* set interrupt per AVE_FORCE_TXINTCNT or when queue is stopped */ 1440 if (!(proc_idx % AVE_FORCE_TXINTCNT) || netif_queue_stopped(ndev)) 1441 cmdsts |= AVE_STS_INTR; 1442 1443 /* disable checksum calculation when skb doesn't calurate checksum */ 1444 if (skb->ip_summed == CHECKSUM_NONE || 1445 skb->ip_summed == CHECKSUM_UNNECESSARY) 1446 cmdsts |= AVE_STS_NOCSUM; 1447 1448 ave_desc_write_cmdsts(ndev, AVE_DESCID_TX, proc_idx, cmdsts); 1449 1450 priv->tx.proc_idx = (proc_idx + 1) % ndesc; 1451 1452 return NETDEV_TX_OK; 1453 } 1454 1455 static int ave_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) 1456 { 1457 return phy_mii_ioctl(ndev->phydev, ifr, cmd); 1458 } 1459 1460 static const u8 v4multi_macadr[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; 1461 static const u8 v6multi_macadr[] = { 0x33, 0x00, 0x00, 0x00, 0x00, 0x00 }; 1462 1463 static void ave_set_rx_mode(struct net_device *ndev) 1464 { 1465 struct ave_private *priv = netdev_priv(ndev); 1466 struct netdev_hw_addr *hw_adr; 1467 int count, mc_cnt; 1468 u32 val; 1469 1470 /* MAC addr filter enable for promiscious mode */ 1471 mc_cnt = netdev_mc_count(ndev); 1472 val = readl(priv->base + AVE_RXCR); 1473 if (ndev->flags & IFF_PROMISC || !mc_cnt) 1474 val &= ~AVE_RXCR_AFEN; 1475 else 1476 val |= AVE_RXCR_AFEN; 1477 writel(val, priv->base + AVE_RXCR); 1478 1479 /* set all multicast address */ 1480 if ((ndev->flags & IFF_ALLMULTI) || mc_cnt > AVE_PF_MULTICAST_SIZE) { 1481 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST, 1482 v4multi_macadr, 1); 1483 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST + 1, 1484 v6multi_macadr, 1); 1485 } else { 1486 /* stop all multicast filter */ 1487 for (count = 0; count < AVE_PF_MULTICAST_SIZE; count++) 1488 ave_pfsel_stop(ndev, AVE_PFNUM_MULTICAST + count); 1489 1490 /* set multicast addresses */ 1491 count = 0; 1492 netdev_for_each_mc_addr(hw_adr, ndev) { 1493 if (count == mc_cnt) 1494 break; 1495 ave_pfsel_set_macaddr(ndev, AVE_PFNUM_MULTICAST + count, 1496 hw_adr->addr, 6); 1497 count++; 1498 } 1499 } 1500 } 1501 1502 static void ave_get_stats64(struct net_device *ndev, 1503 struct rtnl_link_stats64 *stats) 1504 { 1505 struct ave_private *priv = netdev_priv(ndev); 1506 unsigned int start; 1507 1508 do { 1509 start = u64_stats_fetch_begin_irq(&priv->stats_rx.syncp); 1510 stats->rx_packets = priv->stats_rx.packets; 1511 stats->rx_bytes = priv->stats_rx.bytes; 1512 } while (u64_stats_fetch_retry_irq(&priv->stats_rx.syncp, start)); 1513 1514 do { 1515 start = u64_stats_fetch_begin_irq(&priv->stats_tx.syncp); 1516 stats->tx_packets = priv->stats_tx.packets; 1517 stats->tx_bytes = priv->stats_tx.bytes; 1518 } while (u64_stats_fetch_retry_irq(&priv->stats_tx.syncp, start)); 1519 1520 stats->rx_errors = priv->stats_rx.errors; 1521 stats->tx_errors = priv->stats_tx.errors; 1522 stats->rx_dropped = priv->stats_rx.dropped; 1523 stats->tx_dropped = priv->stats_tx.dropped; 1524 stats->rx_fifo_errors = priv->stats_rx.fifo_errors; 1525 stats->collisions = priv->stats_tx.collisions; 1526 } 1527 1528 static int ave_set_mac_address(struct net_device *ndev, void *p) 1529 { 1530 int ret = eth_mac_addr(ndev, p); 1531 1532 if (ret) 1533 return ret; 1534 1535 ave_macaddr_init(ndev); 1536 1537 return 0; 1538 } 1539 1540 static const struct net_device_ops ave_netdev_ops = { 1541 .ndo_init = ave_init, 1542 .ndo_uninit = ave_uninit, 1543 .ndo_open = ave_open, 1544 .ndo_stop = ave_stop, 1545 .ndo_start_xmit = ave_start_xmit, 1546 .ndo_eth_ioctl = ave_ioctl, 1547 .ndo_set_rx_mode = ave_set_rx_mode, 1548 .ndo_get_stats64 = ave_get_stats64, 1549 .ndo_set_mac_address = ave_set_mac_address, 1550 }; 1551 1552 static int ave_probe(struct platform_device *pdev) 1553 { 1554 const struct ave_soc_data *data; 1555 struct device *dev = &pdev->dev; 1556 char buf[ETHTOOL_FWVERS_LEN]; 1557 struct of_phandle_args args; 1558 phy_interface_t phy_mode; 1559 struct ave_private *priv; 1560 struct net_device *ndev; 1561 struct device_node *np; 1562 void __iomem *base; 1563 const char *name; 1564 int i, irq, ret; 1565 u64 dma_mask; 1566 u32 ave_id; 1567 1568 data = of_device_get_match_data(dev); 1569 if (WARN_ON(!data)) 1570 return -EINVAL; 1571 1572 np = dev->of_node; 1573 ret = of_get_phy_mode(np, &phy_mode); 1574 if (ret) { 1575 dev_err(dev, "phy-mode not found\n"); 1576 return ret; 1577 } 1578 1579 irq = platform_get_irq(pdev, 0); 1580 if (irq < 0) 1581 return irq; 1582 1583 base = devm_platform_ioremap_resource(pdev, 0); 1584 if (IS_ERR(base)) 1585 return PTR_ERR(base); 1586 1587 ndev = devm_alloc_etherdev(dev, sizeof(struct ave_private)); 1588 if (!ndev) { 1589 dev_err(dev, "can't allocate ethernet device\n"); 1590 return -ENOMEM; 1591 } 1592 1593 ndev->netdev_ops = &ave_netdev_ops; 1594 ndev->ethtool_ops = &ave_ethtool_ops; 1595 SET_NETDEV_DEV(ndev, dev); 1596 1597 ndev->features |= (NETIF_F_IP_CSUM | NETIF_F_RXCSUM); 1598 ndev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_RXCSUM); 1599 1600 ndev->max_mtu = AVE_MAX_ETHFRAME - (ETH_HLEN + ETH_FCS_LEN); 1601 1602 ret = of_get_ethdev_address(np, ndev); 1603 if (ret) { 1604 /* if the mac address is invalid, use random mac address */ 1605 eth_hw_addr_random(ndev); 1606 dev_warn(dev, "Using random MAC address: %pM\n", 1607 ndev->dev_addr); 1608 } 1609 1610 priv = netdev_priv(ndev); 1611 priv->base = base; 1612 priv->irq = irq; 1613 priv->ndev = ndev; 1614 priv->msg_enable = netif_msg_init(-1, AVE_DEFAULT_MSG_ENABLE); 1615 priv->phy_mode = phy_mode; 1616 priv->data = data; 1617 1618 if (IS_DESC_64BIT(priv)) { 1619 priv->desc_size = AVE_DESC_SIZE_64; 1620 priv->tx.daddr = AVE_TXDM_64; 1621 priv->rx.daddr = AVE_RXDM_64; 1622 dma_mask = DMA_BIT_MASK(64); 1623 } else { 1624 priv->desc_size = AVE_DESC_SIZE_32; 1625 priv->tx.daddr = AVE_TXDM_32; 1626 priv->rx.daddr = AVE_RXDM_32; 1627 dma_mask = DMA_BIT_MASK(32); 1628 } 1629 ret = dma_set_mask(dev, dma_mask); 1630 if (ret) 1631 return ret; 1632 1633 priv->tx.ndesc = AVE_NR_TXDESC; 1634 priv->rx.ndesc = AVE_NR_RXDESC; 1635 1636 u64_stats_init(&priv->stats_tx.syncp); 1637 u64_stats_init(&priv->stats_rx.syncp); 1638 1639 for (i = 0; i < AVE_MAX_CLKS; i++) { 1640 name = priv->data->clock_names[i]; 1641 if (!name) 1642 break; 1643 priv->clk[i] = devm_clk_get(dev, name); 1644 if (IS_ERR(priv->clk[i])) 1645 return PTR_ERR(priv->clk[i]); 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 return PTR_ERR(priv->rst[i]); 1656 priv->nrsts++; 1657 } 1658 1659 ret = of_parse_phandle_with_fixed_args(np, 1660 "socionext,syscon-phy-mode", 1661 1, 0, &args); 1662 if (ret) { 1663 dev_err(dev, "can't get syscon-phy-mode property\n"); 1664 return ret; 1665 } 1666 priv->regmap = syscon_node_to_regmap(args.np); 1667 of_node_put(args.np); 1668 if (IS_ERR(priv->regmap)) { 1669 dev_err(dev, "can't map syscon-phy-mode\n"); 1670 return PTR_ERR(priv->regmap); 1671 } 1672 ret = priv->data->get_pinmode(priv, phy_mode, args.args[0]); 1673 if (ret) { 1674 dev_err(dev, "invalid phy-mode setting\n"); 1675 return ret; 1676 } 1677 1678 priv->mdio = devm_mdiobus_alloc(dev); 1679 if (!priv->mdio) 1680 return -ENOMEM; 1681 priv->mdio->priv = ndev; 1682 priv->mdio->parent = dev; 1683 priv->mdio->read = ave_mdiobus_read; 1684 priv->mdio->write = ave_mdiobus_write; 1685 priv->mdio->name = "uniphier-mdio"; 1686 snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "%s-%x", 1687 pdev->name, pdev->id); 1688 1689 /* Register as a NAPI supported driver */ 1690 netif_napi_add(ndev, &priv->napi_rx, ave_napi_poll_rx, 1691 NAPI_POLL_WEIGHT); 1692 netif_napi_add_tx(ndev, &priv->napi_tx, ave_napi_poll_tx); 1693 1694 platform_set_drvdata(pdev, ndev); 1695 1696 ret = register_netdev(ndev); 1697 if (ret) { 1698 dev_err(dev, "failed to register netdevice\n"); 1699 goto out_del_napi; 1700 } 1701 1702 /* get ID and version */ 1703 ave_id = readl(priv->base + AVE_IDR); 1704 ave_hw_read_version(ndev, buf, sizeof(buf)); 1705 1706 dev_info(dev, "Socionext %c%c%c%c Ethernet IP %s (irq=%d, phy=%s)\n", 1707 (ave_id >> 24) & 0xff, (ave_id >> 16) & 0xff, 1708 (ave_id >> 8) & 0xff, (ave_id >> 0) & 0xff, 1709 buf, priv->irq, phy_modes(phy_mode)); 1710 1711 return 0; 1712 1713 out_del_napi: 1714 netif_napi_del(&priv->napi_rx); 1715 netif_napi_del(&priv->napi_tx); 1716 1717 return ret; 1718 } 1719 1720 static int ave_remove(struct platform_device *pdev) 1721 { 1722 struct net_device *ndev = platform_get_drvdata(pdev); 1723 struct ave_private *priv = netdev_priv(ndev); 1724 1725 unregister_netdev(ndev); 1726 netif_napi_del(&priv->napi_rx); 1727 netif_napi_del(&priv->napi_tx); 1728 1729 return 0; 1730 } 1731 1732 #ifdef CONFIG_PM_SLEEP 1733 static int ave_suspend(struct device *dev) 1734 { 1735 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; 1736 struct net_device *ndev = dev_get_drvdata(dev); 1737 struct ave_private *priv = netdev_priv(ndev); 1738 int ret = 0; 1739 1740 if (netif_running(ndev)) { 1741 ret = ave_stop(ndev); 1742 netif_device_detach(ndev); 1743 } 1744 1745 ave_ethtool_get_wol(ndev, &wol); 1746 priv->wolopts = wol.wolopts; 1747 1748 return ret; 1749 } 1750 1751 static int ave_resume(struct device *dev) 1752 { 1753 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; 1754 struct net_device *ndev = dev_get_drvdata(dev); 1755 struct ave_private *priv = netdev_priv(ndev); 1756 int ret = 0; 1757 1758 ave_global_reset(ndev); 1759 1760 ave_ethtool_get_wol(ndev, &wol); 1761 wol.wolopts = priv->wolopts; 1762 __ave_ethtool_set_wol(ndev, &wol); 1763 1764 if (ndev->phydev) { 1765 ret = phy_resume(ndev->phydev); 1766 if (ret) 1767 return ret; 1768 } 1769 1770 if (netif_running(ndev)) { 1771 ret = ave_open(ndev); 1772 netif_device_attach(ndev); 1773 } 1774 1775 return ret; 1776 } 1777 1778 static SIMPLE_DEV_PM_OPS(ave_pm_ops, ave_suspend, ave_resume); 1779 #define AVE_PM_OPS (&ave_pm_ops) 1780 #else 1781 #define AVE_PM_OPS NULL 1782 #endif 1783 1784 static int ave_pro4_get_pinmode(struct ave_private *priv, 1785 phy_interface_t phy_mode, u32 arg) 1786 { 1787 if (arg > 0) 1788 return -EINVAL; 1789 1790 priv->pinmode_mask = SG_ETPINMODE_RMII(0); 1791 1792 switch (phy_mode) { 1793 case PHY_INTERFACE_MODE_RMII: 1794 priv->pinmode_val = SG_ETPINMODE_RMII(0); 1795 break; 1796 case PHY_INTERFACE_MODE_MII: 1797 case PHY_INTERFACE_MODE_RGMII: 1798 case PHY_INTERFACE_MODE_RGMII_ID: 1799 case PHY_INTERFACE_MODE_RGMII_RXID: 1800 case PHY_INTERFACE_MODE_RGMII_TXID: 1801 priv->pinmode_val = 0; 1802 break; 1803 default: 1804 return -EINVAL; 1805 } 1806 1807 return 0; 1808 } 1809 1810 static int ave_ld11_get_pinmode(struct ave_private *priv, 1811 phy_interface_t phy_mode, u32 arg) 1812 { 1813 if (arg > 0) 1814 return -EINVAL; 1815 1816 priv->pinmode_mask = SG_ETPINMODE_EXTPHY | SG_ETPINMODE_RMII(0); 1817 1818 switch (phy_mode) { 1819 case PHY_INTERFACE_MODE_INTERNAL: 1820 priv->pinmode_val = 0; 1821 break; 1822 case PHY_INTERFACE_MODE_RMII: 1823 priv->pinmode_val = SG_ETPINMODE_EXTPHY | SG_ETPINMODE_RMII(0); 1824 break; 1825 default: 1826 return -EINVAL; 1827 } 1828 1829 return 0; 1830 } 1831 1832 static int ave_ld20_get_pinmode(struct ave_private *priv, 1833 phy_interface_t phy_mode, u32 arg) 1834 { 1835 if (arg > 0) 1836 return -EINVAL; 1837 1838 priv->pinmode_mask = SG_ETPINMODE_RMII(0); 1839 1840 switch (phy_mode) { 1841 case PHY_INTERFACE_MODE_RMII: 1842 priv->pinmode_val = SG_ETPINMODE_RMII(0); 1843 break; 1844 case PHY_INTERFACE_MODE_RGMII: 1845 case PHY_INTERFACE_MODE_RGMII_ID: 1846 case PHY_INTERFACE_MODE_RGMII_RXID: 1847 case PHY_INTERFACE_MODE_RGMII_TXID: 1848 priv->pinmode_val = 0; 1849 break; 1850 default: 1851 return -EINVAL; 1852 } 1853 1854 return 0; 1855 } 1856 1857 static int ave_pxs3_get_pinmode(struct ave_private *priv, 1858 phy_interface_t phy_mode, u32 arg) 1859 { 1860 if (arg > 1) 1861 return -EINVAL; 1862 1863 priv->pinmode_mask = SG_ETPINMODE_RMII(arg); 1864 1865 switch (phy_mode) { 1866 case PHY_INTERFACE_MODE_RMII: 1867 priv->pinmode_val = SG_ETPINMODE_RMII(arg); 1868 break; 1869 case PHY_INTERFACE_MODE_RGMII: 1870 case PHY_INTERFACE_MODE_RGMII_ID: 1871 case PHY_INTERFACE_MODE_RGMII_RXID: 1872 case PHY_INTERFACE_MODE_RGMII_TXID: 1873 priv->pinmode_val = 0; 1874 break; 1875 default: 1876 return -EINVAL; 1877 } 1878 1879 return 0; 1880 } 1881 1882 static const struct ave_soc_data ave_pro4_data = { 1883 .is_desc_64bit = false, 1884 .clock_names = { 1885 "gio", "ether", "ether-gb", "ether-phy", 1886 }, 1887 .reset_names = { 1888 "gio", "ether", 1889 }, 1890 .get_pinmode = ave_pro4_get_pinmode, 1891 }; 1892 1893 static const struct ave_soc_data ave_pxs2_data = { 1894 .is_desc_64bit = false, 1895 .clock_names = { 1896 "ether", 1897 }, 1898 .reset_names = { 1899 "ether", 1900 }, 1901 .get_pinmode = ave_pro4_get_pinmode, 1902 }; 1903 1904 static const struct ave_soc_data ave_ld11_data = { 1905 .is_desc_64bit = false, 1906 .clock_names = { 1907 "ether", 1908 }, 1909 .reset_names = { 1910 "ether", 1911 }, 1912 .get_pinmode = ave_ld11_get_pinmode, 1913 }; 1914 1915 static const struct ave_soc_data ave_ld20_data = { 1916 .is_desc_64bit = true, 1917 .clock_names = { 1918 "ether", 1919 }, 1920 .reset_names = { 1921 "ether", 1922 }, 1923 .get_pinmode = ave_ld20_get_pinmode, 1924 }; 1925 1926 static const struct ave_soc_data ave_pxs3_data = { 1927 .is_desc_64bit = false, 1928 .clock_names = { 1929 "ether", 1930 }, 1931 .reset_names = { 1932 "ether", 1933 }, 1934 .get_pinmode = ave_pxs3_get_pinmode, 1935 }; 1936 1937 static const struct ave_soc_data ave_nx1_data = { 1938 .is_desc_64bit = true, 1939 .clock_names = { 1940 "ether", 1941 }, 1942 .reset_names = { 1943 "ether", 1944 }, 1945 .get_pinmode = ave_pxs3_get_pinmode, 1946 }; 1947 1948 static const struct of_device_id of_ave_match[] = { 1949 { 1950 .compatible = "socionext,uniphier-pro4-ave4", 1951 .data = &ave_pro4_data, 1952 }, 1953 { 1954 .compatible = "socionext,uniphier-pxs2-ave4", 1955 .data = &ave_pxs2_data, 1956 }, 1957 { 1958 .compatible = "socionext,uniphier-ld11-ave4", 1959 .data = &ave_ld11_data, 1960 }, 1961 { 1962 .compatible = "socionext,uniphier-ld20-ave4", 1963 .data = &ave_ld20_data, 1964 }, 1965 { 1966 .compatible = "socionext,uniphier-pxs3-ave4", 1967 .data = &ave_pxs3_data, 1968 }, 1969 { 1970 .compatible = "socionext,uniphier-nx1-ave4", 1971 .data = &ave_nx1_data, 1972 }, 1973 { /* Sentinel */ } 1974 }; 1975 MODULE_DEVICE_TABLE(of, of_ave_match); 1976 1977 static struct platform_driver ave_driver = { 1978 .probe = ave_probe, 1979 .remove = ave_remove, 1980 .driver = { 1981 .name = "ave", 1982 .pm = AVE_PM_OPS, 1983 .of_match_table = of_ave_match, 1984 }, 1985 }; 1986 module_platform_driver(ave_driver); 1987 1988 MODULE_AUTHOR("Kunihiko Hayashi <hayashi.kunihiko@socionext.com>"); 1989 MODULE_DESCRIPTION("Socionext UniPhier AVE ethernet driver"); 1990 MODULE_LICENSE("GPL v2"); 1991