1// SPDX-License-Identifier: GPL-2.0-or-later 2 /*************************************************************************** 3 * 4 * Copyright (C) 2007-2010 SMSC 5 * 6 *****************************************************************************/ 7 8#include <linux/module.h> 9#include <linux/kmod.h> 10#include <linux/netdevice.h> 11#include <linux/etherdevice.h> 12#include <linux/ethtool.h> 13#include <linux/mii.h> 14#include <linux/usb.h> 15#include <linux/bitrev.h> 16#include <linux/crc16.h> 17#include <linux/crc32.h> 18#include <linux/usb/usbnet.h> 19#include <linux/slab.h> 20#include <linux/of_net.h> 21#include "smsc75xx.h" 22 23#define SMSC_CHIPNAME "smsc75xx" 24#define SMSC_DRIVER_VERSION "1.0.0" 25#define HS_USB_PKT_SIZE (512) 26#define FS_USB_PKT_SIZE (64) 27#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 28#define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 29#define DEFAULT_BULK_IN_DELAY (0x00002000) 30#define MAX_SINGLE_PACKET_SIZE (9000) 31#define LAN75XX_EEPROM_MAGIC (0x7500) 32#define EEPROM_MAC_OFFSET (0x01) 33#define DEFAULT_TX_CSUM_ENABLE (true) 34#define DEFAULT_RX_CSUM_ENABLE (true) 35#define SMSC75XX_INTERNAL_PHY_ID (1) 36#define SMSC75XX_TX_OVERHEAD (8) 37#define MAX_RX_FIFO_SIZE (20 * 1024) 38#define MAX_TX_FIFO_SIZE (12 * 1024) 39#define USB_VENDOR_ID_SMSC (0x0424) 40#define USB_PRODUCT_ID_LAN7500 (0x7500) 41#define USB_PRODUCT_ID_LAN7505 (0x7505) 42#define RXW_PADDING 2 43#define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 44 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 45 46#define SUSPEND_SUSPEND0 (0x01) 47#define SUSPEND_SUSPEND1 (0x02) 48#define SUSPEND_SUSPEND2 (0x04) 49#define SUSPEND_SUSPEND3 (0x08) 50#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 51 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 52 53struct smsc75xx_priv { 54 struct usbnet *dev; 55 u32 rfe_ctl; 56 u32 wolopts; 57 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 58 struct mutex dataport_mutex; 59 spinlock_t rfe_ctl_lock; 60 struct work_struct set_multicast; 61 u8 suspend_flags; 62}; 63 64struct usb_context { 65 struct usb_ctrlrequest req; 66 struct usbnet *dev; 67}; 68 69static bool turbo_mode = true; 70module_param(turbo_mode, bool, 0644); 71MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 72 73static int smsc75xx_link_ok_nopm(struct usbnet *dev); 74static int smsc75xx_phy_gig_workaround(struct usbnet *dev); 75 76static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 77 u32 *data, int in_pm) 78{ 79 u32 buf; 80 int ret; 81 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 82 83 BUG_ON(!dev); 84 85 if (!in_pm) 86 fn = usbnet_read_cmd; 87 else 88 fn = usbnet_read_cmd_nopm; 89 90 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 91 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 92 0, index, &buf, 4); 93 if (unlikely(ret < 4)) { 94 ret = ret < 0 ? ret : -ENODATA; 95 96 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 97 index, ret); 98 return ret; 99 } 100 101 le32_to_cpus(&buf); 102 *data = buf; 103 104 return ret; 105} 106 107static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 108 u32 data, int in_pm) 109{ 110 u32 buf; 111 int ret; 112 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 113 114 BUG_ON(!dev); 115 116 if (!in_pm) 117 fn = usbnet_write_cmd; 118 else 119 fn = usbnet_write_cmd_nopm; 120 121 buf = data; 122 cpu_to_le32s(&buf); 123 124 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 125 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 126 0, index, &buf, 4); 127 if (unlikely(ret < 0)) 128 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 129 index, ret); 130 131 return ret; 132} 133 134static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 135 u32 *data) 136{ 137 return __smsc75xx_read_reg(dev, index, data, 1); 138} 139 140static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 141 u32 data) 142{ 143 return __smsc75xx_write_reg(dev, index, data, 1); 144} 145 146static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 147 u32 *data) 148{ 149 return __smsc75xx_read_reg(dev, index, data, 0); 150} 151 152static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 153 u32 data) 154{ 155 return __smsc75xx_write_reg(dev, index, data, 0); 156} 157 158/* Loop until the read is completed with timeout 159 * called with phy_mutex held */ 160static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 161 int in_pm) 162{ 163 unsigned long start_time = jiffies; 164 u32 val; 165 int ret; 166 167 do { 168 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 169 if (ret < 0) { 170 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 171 return ret; 172 } 173 174 if (!(val & MII_ACCESS_BUSY)) 175 return 0; 176 } while (!time_after(jiffies, start_time + HZ)); 177 178 return -EIO; 179} 180 181static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 182 int in_pm) 183{ 184 struct usbnet *dev = netdev_priv(netdev); 185 u32 val, addr; 186 int ret; 187 188 mutex_lock(&dev->phy_mutex); 189 190 /* confirm MII not busy */ 191 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 192 if (ret < 0) { 193 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 194 goto done; 195 } 196 197 /* set the address, index & direction (read from PHY) */ 198 phy_id &= dev->mii.phy_id_mask; 199 idx &= dev->mii.reg_num_mask; 200 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 201 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 202 | MII_ACCESS_READ | MII_ACCESS_BUSY; 203 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 204 if (ret < 0) { 205 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 206 goto done; 207 } 208 209 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 210 if (ret < 0) { 211 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 212 goto done; 213 } 214 215 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 216 if (ret < 0) { 217 netdev_warn(dev->net, "Error reading MII_DATA\n"); 218 goto done; 219 } 220 221 ret = (u16)(val & 0xFFFF); 222 223done: 224 mutex_unlock(&dev->phy_mutex); 225 return ret; 226} 227 228static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 229 int idx, int regval, int in_pm) 230{ 231 struct usbnet *dev = netdev_priv(netdev); 232 u32 val, addr; 233 int ret; 234 235 mutex_lock(&dev->phy_mutex); 236 237 /* confirm MII not busy */ 238 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 239 if (ret < 0) { 240 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 241 goto done; 242 } 243 244 val = regval; 245 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 246 if (ret < 0) { 247 netdev_warn(dev->net, "Error writing MII_DATA\n"); 248 goto done; 249 } 250 251 /* set the address, index & direction (write to PHY) */ 252 phy_id &= dev->mii.phy_id_mask; 253 idx &= dev->mii.reg_num_mask; 254 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 255 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 256 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 257 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 258 if (ret < 0) { 259 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 260 goto done; 261 } 262 263 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 264 if (ret < 0) { 265 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 266 goto done; 267 } 268 269done: 270 mutex_unlock(&dev->phy_mutex); 271} 272 273static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 274 int idx) 275{ 276 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 277} 278 279static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 280 int idx, int regval) 281{ 282 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 283} 284 285static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 286{ 287 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 288} 289 290static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 291 int regval) 292{ 293 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 294} 295 296static int smsc75xx_wait_eeprom(struct usbnet *dev) 297{ 298 unsigned long start_time = jiffies; 299 u32 val; 300 int ret; 301 302 do { 303 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 304 if (ret < 0) { 305 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 306 return ret; 307 } 308 309 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 310 break; 311 udelay(40); 312 } while (!time_after(jiffies, start_time + HZ)); 313 314 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 315 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 316 return -EIO; 317 } 318 319 return 0; 320} 321 322static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 323{ 324 unsigned long start_time = jiffies; 325 u32 val; 326 int ret; 327 328 do { 329 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 330 if (ret < 0) { 331 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 332 return ret; 333 } 334 335 if (!(val & E2P_CMD_BUSY)) 336 return 0; 337 338 udelay(40); 339 } while (!time_after(jiffies, start_time + HZ)); 340 341 netdev_warn(dev->net, "EEPROM is busy\n"); 342 return -EIO; 343} 344 345static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 346 u8 *data) 347{ 348 u32 val; 349 int i, ret; 350 351 BUG_ON(!dev); 352 BUG_ON(!data); 353 354 ret = smsc75xx_eeprom_confirm_not_busy(dev); 355 if (ret) 356 return ret; 357 358 for (i = 0; i < length; i++) { 359 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 360 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 361 if (ret < 0) { 362 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 363 return ret; 364 } 365 366 ret = smsc75xx_wait_eeprom(dev); 367 if (ret < 0) 368 return ret; 369 370 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 371 if (ret < 0) { 372 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 373 return ret; 374 } 375 376 data[i] = val & 0xFF; 377 offset++; 378 } 379 380 return 0; 381} 382 383static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 384 u8 *data) 385{ 386 u32 val; 387 int i, ret; 388 389 BUG_ON(!dev); 390 BUG_ON(!data); 391 392 ret = smsc75xx_eeprom_confirm_not_busy(dev); 393 if (ret) 394 return ret; 395 396 /* Issue write/erase enable command */ 397 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 398 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 399 if (ret < 0) { 400 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 401 return ret; 402 } 403 404 ret = smsc75xx_wait_eeprom(dev); 405 if (ret < 0) 406 return ret; 407 408 for (i = 0; i < length; i++) { 409 410 /* Fill data register */ 411 val = data[i]; 412 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 413 if (ret < 0) { 414 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 415 return ret; 416 } 417 418 /* Send "write" command */ 419 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 420 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 421 if (ret < 0) { 422 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 423 return ret; 424 } 425 426 ret = smsc75xx_wait_eeprom(dev); 427 if (ret < 0) 428 return ret; 429 430 offset++; 431 } 432 433 return 0; 434} 435 436static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 437{ 438 int i, ret; 439 440 for (i = 0; i < 100; i++) { 441 u32 dp_sel; 442 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 443 if (ret < 0) { 444 netdev_warn(dev->net, "Error reading DP_SEL\n"); 445 return ret; 446 } 447 448 if (dp_sel & DP_SEL_DPRDY) 449 return 0; 450 451 udelay(40); 452 } 453 454 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 455 456 return -EIO; 457} 458 459static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 460 u32 length, u32 *buf) 461{ 462 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 463 u32 dp_sel; 464 int i, ret; 465 466 mutex_lock(&pdata->dataport_mutex); 467 468 ret = smsc75xx_dataport_wait_not_busy(dev); 469 if (ret < 0) { 470 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 471 goto done; 472 } 473 474 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 475 if (ret < 0) { 476 netdev_warn(dev->net, "Error reading DP_SEL\n"); 477 goto done; 478 } 479 480 dp_sel &= ~DP_SEL_RSEL; 481 dp_sel |= ram_select; 482 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 483 if (ret < 0) { 484 netdev_warn(dev->net, "Error writing DP_SEL\n"); 485 goto done; 486 } 487 488 for (i = 0; i < length; i++) { 489 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 490 if (ret < 0) { 491 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 492 goto done; 493 } 494 495 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 496 if (ret < 0) { 497 netdev_warn(dev->net, "Error writing DP_DATA\n"); 498 goto done; 499 } 500 501 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 502 if (ret < 0) { 503 netdev_warn(dev->net, "Error writing DP_CMD\n"); 504 goto done; 505 } 506 507 ret = smsc75xx_dataport_wait_not_busy(dev); 508 if (ret < 0) { 509 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 510 goto done; 511 } 512 } 513 514done: 515 mutex_unlock(&pdata->dataport_mutex); 516 return ret; 517} 518 519/* returns hash bit number for given MAC address */ 520static u32 smsc75xx_hash(char addr[ETH_ALEN]) 521{ 522 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 523} 524 525static void smsc75xx_deferred_multicast_write(struct work_struct *param) 526{ 527 struct smsc75xx_priv *pdata = 528 container_of(param, struct smsc75xx_priv, set_multicast); 529 struct usbnet *dev = pdata->dev; 530 int ret; 531 532 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 533 pdata->rfe_ctl); 534 535 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 536 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 537 538 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 539 if (ret < 0) 540 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 541} 542 543static void smsc75xx_set_multicast(struct net_device *netdev) 544{ 545 struct usbnet *dev = netdev_priv(netdev); 546 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 547 unsigned long flags; 548 int i; 549 550 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 551 552 pdata->rfe_ctl &= 553 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 554 pdata->rfe_ctl |= RFE_CTL_AB; 555 556 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 557 pdata->multicast_hash_table[i] = 0; 558 559 if (dev->net->flags & IFF_PROMISC) { 560 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 561 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 562 } else if (dev->net->flags & IFF_ALLMULTI) { 563 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 564 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 565 } else if (!netdev_mc_empty(dev->net)) { 566 struct netdev_hw_addr *ha; 567 568 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 569 570 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 571 572 netdev_for_each_mc_addr(ha, netdev) { 573 u32 bitnum = smsc75xx_hash(ha->addr); 574 pdata->multicast_hash_table[bitnum / 32] |= 575 (1 << (bitnum % 32)); 576 } 577 } else { 578 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 579 pdata->rfe_ctl |= RFE_CTL_DPF; 580 } 581 582 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 583 584 /* defer register writes to a sleepable context */ 585 schedule_work(&pdata->set_multicast); 586} 587 588static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 589 u16 lcladv, u16 rmtadv) 590{ 591 u32 flow = 0, fct_flow = 0; 592 int ret; 593 594 if (duplex == DUPLEX_FULL) { 595 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 596 597 if (cap & FLOW_CTRL_TX) { 598 flow = (FLOW_TX_FCEN | 0xFFFF); 599 /* set fct_flow thresholds to 20% and 80% */ 600 fct_flow = (8 << 8) | 32; 601 } 602 603 if (cap & FLOW_CTRL_RX) 604 flow |= FLOW_RX_FCEN; 605 606 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 607 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 608 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 609 } else { 610 netif_dbg(dev, link, dev->net, "half duplex\n"); 611 } 612 613 ret = smsc75xx_write_reg(dev, FLOW, flow); 614 if (ret < 0) { 615 netdev_warn(dev->net, "Error writing FLOW\n"); 616 return ret; 617 } 618 619 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 620 if (ret < 0) { 621 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 622 return ret; 623 } 624 625 return 0; 626} 627 628static int smsc75xx_link_reset(struct usbnet *dev) 629{ 630 struct mii_if_info *mii = &dev->mii; 631 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 632 u16 lcladv, rmtadv; 633 int ret; 634 635 /* write to clear phy interrupt status */ 636 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 637 PHY_INT_SRC_CLEAR_ALL); 638 639 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 640 if (ret < 0) { 641 netdev_warn(dev->net, "Error writing INT_STS\n"); 642 return ret; 643 } 644 645 mii_check_media(mii, 1, 1); 646 mii_ethtool_gset(&dev->mii, &ecmd); 647 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 648 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 649 650 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 651 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 652 653 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 654} 655 656static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 657{ 658 u32 intdata; 659 660 if (urb->actual_length != 4) { 661 netdev_warn(dev->net, "unexpected urb length %d\n", 662 urb->actual_length); 663 return; 664 } 665 666 intdata = get_unaligned_le32(urb->transfer_buffer); 667 668 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 669 670 if (intdata & INT_ENP_PHY_INT) 671 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 672 else 673 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 674 intdata); 675} 676 677static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 678{ 679 return MAX_EEPROM_SIZE; 680} 681 682static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 683 struct ethtool_eeprom *ee, u8 *data) 684{ 685 struct usbnet *dev = netdev_priv(netdev); 686 687 ee->magic = LAN75XX_EEPROM_MAGIC; 688 689 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 690} 691 692static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 693 struct ethtool_eeprom *ee, u8 *data) 694{ 695 struct usbnet *dev = netdev_priv(netdev); 696 697 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 698 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 699 ee->magic); 700 return -EINVAL; 701 } 702 703 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 704} 705 706static void smsc75xx_ethtool_get_wol(struct net_device *net, 707 struct ethtool_wolinfo *wolinfo) 708{ 709 struct usbnet *dev = netdev_priv(net); 710 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 711 712 wolinfo->supported = SUPPORTED_WAKE; 713 wolinfo->wolopts = pdata->wolopts; 714} 715 716static int smsc75xx_ethtool_set_wol(struct net_device *net, 717 struct ethtool_wolinfo *wolinfo) 718{ 719 struct usbnet *dev = netdev_priv(net); 720 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 721 int ret; 722 723 if (wolinfo->wolopts & ~SUPPORTED_WAKE) 724 return -EINVAL; 725 726 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 727 728 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 729 if (ret < 0) 730 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 731 732 return ret; 733} 734 735static const struct ethtool_ops smsc75xx_ethtool_ops = { 736 .get_link = usbnet_get_link, 737 .nway_reset = usbnet_nway_reset, 738 .get_drvinfo = usbnet_get_drvinfo, 739 .get_msglevel = usbnet_get_msglevel, 740 .set_msglevel = usbnet_set_msglevel, 741 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 742 .get_eeprom = smsc75xx_ethtool_get_eeprom, 743 .set_eeprom = smsc75xx_ethtool_set_eeprom, 744 .get_wol = smsc75xx_ethtool_get_wol, 745 .set_wol = smsc75xx_ethtool_set_wol, 746 .get_link_ksettings = usbnet_get_link_ksettings, 747 .set_link_ksettings = usbnet_set_link_ksettings, 748}; 749 750static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 751{ 752 struct usbnet *dev = netdev_priv(netdev); 753 754 if (!netif_running(netdev)) 755 return -EINVAL; 756 757 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 758} 759 760static void smsc75xx_init_mac_address(struct usbnet *dev) 761{ 762 /* maybe the boot loader passed the MAC address in devicetree */ 763 if (!eth_platform_get_mac_address(&dev->udev->dev, 764 dev->net->dev_addr)) { 765 if (is_valid_ether_addr(dev->net->dev_addr)) { 766 /* device tree values are valid so use them */ 767 netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n"); 768 return; 769 } 770 } 771 772 /* try reading mac address from EEPROM */ 773 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 774 dev->net->dev_addr) == 0) { 775 if (is_valid_ether_addr(dev->net->dev_addr)) { 776 /* eeprom values are valid so use them */ 777 netif_dbg(dev, ifup, dev->net, 778 "MAC address read from EEPROM\n"); 779 return; 780 } 781 } 782 783 /* no useful static MAC address found. generate a random one */ 784 eth_hw_addr_random(dev->net); 785 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 786} 787 788static int smsc75xx_set_mac_address(struct usbnet *dev) 789{ 790 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 791 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 792 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 793 794 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 795 if (ret < 0) { 796 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 797 return ret; 798 } 799 800 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 801 if (ret < 0) { 802 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 803 return ret; 804 } 805 806 addr_hi |= ADDR_FILTX_FB_VALID; 807 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 808 if (ret < 0) { 809 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 810 return ret; 811 } 812 813 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 814 if (ret < 0) 815 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 816 817 return ret; 818} 819 820static int smsc75xx_phy_initialize(struct usbnet *dev) 821{ 822 int bmcr, ret, timeout = 0; 823 824 /* Initialize MII structure */ 825 dev->mii.dev = dev->net; 826 dev->mii.mdio_read = smsc75xx_mdio_read; 827 dev->mii.mdio_write = smsc75xx_mdio_write; 828 dev->mii.phy_id_mask = 0x1f; 829 dev->mii.reg_num_mask = 0x1f; 830 dev->mii.supports_gmii = 1; 831 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 832 833 /* reset phy and wait for reset to complete */ 834 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 835 836 do { 837 msleep(10); 838 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 839 if (bmcr < 0) { 840 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 841 return bmcr; 842 } 843 timeout++; 844 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 845 846 if (timeout >= 100) { 847 netdev_warn(dev->net, "timeout on PHY Reset\n"); 848 return -EIO; 849 } 850 851 /* phy workaround for gig link */ 852 smsc75xx_phy_gig_workaround(dev); 853 854 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 855 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 856 ADVERTISE_PAUSE_ASYM); 857 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 858 ADVERTISE_1000FULL); 859 860 /* read and write to clear phy interrupt status */ 861 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 862 if (ret < 0) { 863 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 864 return ret; 865 } 866 867 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 868 869 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 870 PHY_INT_MASK_DEFAULT); 871 mii_nway_restart(&dev->mii); 872 873 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 874 return 0; 875} 876 877static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 878{ 879 int ret = 0; 880 u32 buf; 881 bool rxenabled; 882 883 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 884 if (ret < 0) { 885 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 886 return ret; 887 } 888 889 rxenabled = ((buf & MAC_RX_RXEN) != 0); 890 891 if (rxenabled) { 892 buf &= ~MAC_RX_RXEN; 893 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 894 if (ret < 0) { 895 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 896 return ret; 897 } 898 } 899 900 /* add 4 to size for FCS */ 901 buf &= ~MAC_RX_MAX_SIZE; 902 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 903 904 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 905 if (ret < 0) { 906 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 907 return ret; 908 } 909 910 if (rxenabled) { 911 buf |= MAC_RX_RXEN; 912 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 913 if (ret < 0) { 914 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 915 return ret; 916 } 917 } 918 919 return 0; 920} 921 922static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 923{ 924 struct usbnet *dev = netdev_priv(netdev); 925 int ret; 926 927 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 928 if (ret < 0) { 929 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 930 return ret; 931 } 932 933 return usbnet_change_mtu(netdev, new_mtu); 934} 935 936/* Enable or disable Rx checksum offload engine */ 937static int smsc75xx_set_features(struct net_device *netdev, 938 netdev_features_t features) 939{ 940 struct usbnet *dev = netdev_priv(netdev); 941 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 942 unsigned long flags; 943 int ret; 944 945 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 946 947 if (features & NETIF_F_RXCSUM) 948 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 949 else 950 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 951 952 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 953 /* it's racing here! */ 954 955 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 956 if (ret < 0) { 957 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 958 return ret; 959 } 960 return 0; 961} 962 963static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 964{ 965 int timeout = 0; 966 967 do { 968 u32 buf; 969 int ret; 970 971 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 972 973 if (ret < 0) { 974 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 975 return ret; 976 } 977 978 if (buf & PMT_CTL_DEV_RDY) 979 return 0; 980 981 msleep(10); 982 timeout++; 983 } while (timeout < 100); 984 985 netdev_warn(dev->net, "timeout waiting for device ready\n"); 986 return -EIO; 987} 988 989static int smsc75xx_phy_gig_workaround(struct usbnet *dev) 990{ 991 struct mii_if_info *mii = &dev->mii; 992 int ret = 0, timeout = 0; 993 u32 buf, link_up = 0; 994 995 /* Set the phy in Gig loopback */ 996 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040); 997 998 /* Wait for the link up */ 999 do { 1000 link_up = smsc75xx_link_ok_nopm(dev); 1001 usleep_range(10000, 20000); 1002 timeout++; 1003 } while ((!link_up) && (timeout < 1000)); 1004 1005 if (timeout >= 1000) { 1006 netdev_warn(dev->net, "Timeout waiting for PHY link up\n"); 1007 return -EIO; 1008 } 1009 1010 /* phy reset */ 1011 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1012 if (ret < 0) { 1013 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1014 return ret; 1015 } 1016 1017 buf |= PMT_CTL_PHY_RST; 1018 1019 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1020 if (ret < 0) { 1021 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1022 return ret; 1023 } 1024 1025 timeout = 0; 1026 do { 1027 usleep_range(10000, 20000); 1028 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1029 if (ret < 0) { 1030 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", 1031 ret); 1032 return ret; 1033 } 1034 timeout++; 1035 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1036 1037 if (timeout >= 100) { 1038 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1039 return -EIO; 1040 } 1041 1042 return 0; 1043} 1044 1045static int smsc75xx_reset(struct usbnet *dev) 1046{ 1047 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1048 u32 buf; 1049 int ret = 0, timeout; 1050 1051 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 1052 1053 ret = smsc75xx_wait_ready(dev, 0); 1054 if (ret < 0) { 1055 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 1056 return ret; 1057 } 1058 1059 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1060 if (ret < 0) { 1061 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1062 return ret; 1063 } 1064 1065 buf |= HW_CFG_LRST; 1066 1067 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1068 if (ret < 0) { 1069 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1070 return ret; 1071 } 1072 1073 timeout = 0; 1074 do { 1075 msleep(10); 1076 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1077 if (ret < 0) { 1078 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1079 return ret; 1080 } 1081 timeout++; 1082 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1083 1084 if (timeout >= 100) { 1085 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1086 return -EIO; 1087 } 1088 1089 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1090 1091 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1092 if (ret < 0) { 1093 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1094 return ret; 1095 } 1096 1097 buf |= PMT_CTL_PHY_RST; 1098 1099 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1100 if (ret < 0) { 1101 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1102 return ret; 1103 } 1104 1105 timeout = 0; 1106 do { 1107 msleep(10); 1108 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1109 if (ret < 0) { 1110 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1111 return ret; 1112 } 1113 timeout++; 1114 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1115 1116 if (timeout >= 100) { 1117 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1118 return -EIO; 1119 } 1120 1121 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1122 1123 ret = smsc75xx_set_mac_address(dev); 1124 if (ret < 0) { 1125 netdev_warn(dev->net, "Failed to set mac address\n"); 1126 return ret; 1127 } 1128 1129 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1130 dev->net->dev_addr); 1131 1132 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1133 if (ret < 0) { 1134 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1135 return ret; 1136 } 1137 1138 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1139 buf); 1140 1141 buf |= HW_CFG_BIR; 1142 1143 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1144 if (ret < 0) { 1145 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1146 return ret; 1147 } 1148 1149 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1150 if (ret < 0) { 1151 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1152 return ret; 1153 } 1154 1155 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1156 buf); 1157 1158 if (!turbo_mode) { 1159 buf = 0; 1160 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1161 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1162 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1163 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1164 } else { 1165 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1166 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1167 } 1168 1169 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1170 (ulong)dev->rx_urb_size); 1171 1172 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1173 if (ret < 0) { 1174 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1175 return ret; 1176 } 1177 1178 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1179 if (ret < 0) { 1180 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1181 return ret; 1182 } 1183 1184 netif_dbg(dev, ifup, dev->net, 1185 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1186 1187 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1188 if (ret < 0) { 1189 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1190 return ret; 1191 } 1192 1193 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1194 if (ret < 0) { 1195 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1196 return ret; 1197 } 1198 1199 netif_dbg(dev, ifup, dev->net, 1200 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1201 1202 if (turbo_mode) { 1203 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1204 if (ret < 0) { 1205 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1206 return ret; 1207 } 1208 1209 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1210 1211 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1212 1213 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1214 if (ret < 0) { 1215 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1216 return ret; 1217 } 1218 1219 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1220 if (ret < 0) { 1221 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1222 return ret; 1223 } 1224 1225 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1226 } 1227 1228 /* set FIFO sizes */ 1229 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1230 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1231 if (ret < 0) { 1232 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1233 return ret; 1234 } 1235 1236 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1237 1238 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1239 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1240 if (ret < 0) { 1241 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1242 return ret; 1243 } 1244 1245 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1246 1247 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1248 if (ret < 0) { 1249 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1250 return ret; 1251 } 1252 1253 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1254 if (ret < 0) { 1255 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1256 return ret; 1257 } 1258 1259 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1260 1261 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1262 if (ret < 0) { 1263 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1264 return ret; 1265 } 1266 1267 /* only set default GPIO/LED settings if no EEPROM is detected */ 1268 if (!(buf & E2P_CMD_LOADED)) { 1269 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1270 if (ret < 0) { 1271 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1272 return ret; 1273 } 1274 1275 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1276 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1277 1278 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1279 if (ret < 0) { 1280 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1281 return ret; 1282 } 1283 } 1284 1285 ret = smsc75xx_write_reg(dev, FLOW, 0); 1286 if (ret < 0) { 1287 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1288 return ret; 1289 } 1290 1291 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1292 if (ret < 0) { 1293 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1294 return ret; 1295 } 1296 1297 /* Don't need rfe_ctl_lock during initialisation */ 1298 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1299 if (ret < 0) { 1300 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1301 return ret; 1302 } 1303 1304 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1305 1306 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1307 if (ret < 0) { 1308 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1309 return ret; 1310 } 1311 1312 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1313 if (ret < 0) { 1314 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1315 return ret; 1316 } 1317 1318 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1319 pdata->rfe_ctl); 1320 1321 /* Enable or disable checksum offload engines */ 1322 smsc75xx_set_features(dev->net, dev->net->features); 1323 1324 smsc75xx_set_multicast(dev->net); 1325 1326 ret = smsc75xx_phy_initialize(dev); 1327 if (ret < 0) { 1328 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1329 return ret; 1330 } 1331 1332 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1333 if (ret < 0) { 1334 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1335 return ret; 1336 } 1337 1338 /* enable PHY interrupts */ 1339 buf |= INT_ENP_PHY_INT; 1340 1341 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1342 if (ret < 0) { 1343 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1344 return ret; 1345 } 1346 1347 /* allow mac to detect speed and duplex from phy */ 1348 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1349 if (ret < 0) { 1350 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1351 return ret; 1352 } 1353 1354 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1355 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1356 if (ret < 0) { 1357 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1358 return ret; 1359 } 1360 1361 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1362 if (ret < 0) { 1363 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1364 return ret; 1365 } 1366 1367 buf |= MAC_TX_TXEN; 1368 1369 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1370 if (ret < 0) { 1371 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1372 return ret; 1373 } 1374 1375 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1376 1377 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1378 if (ret < 0) { 1379 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1380 return ret; 1381 } 1382 1383 buf |= FCT_TX_CTL_EN; 1384 1385 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1386 if (ret < 0) { 1387 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1388 return ret; 1389 } 1390 1391 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1392 1393 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1394 if (ret < 0) { 1395 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1396 return ret; 1397 } 1398 1399 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1400 if (ret < 0) { 1401 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1402 return ret; 1403 } 1404 1405 buf |= MAC_RX_RXEN; 1406 1407 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1408 if (ret < 0) { 1409 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1410 return ret; 1411 } 1412 1413 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1414 1415 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1416 if (ret < 0) { 1417 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1418 return ret; 1419 } 1420 1421 buf |= FCT_RX_CTL_EN; 1422 1423 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1424 if (ret < 0) { 1425 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1426 return ret; 1427 } 1428 1429 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1430 1431 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1432 return 0; 1433} 1434 1435static const struct net_device_ops smsc75xx_netdev_ops = { 1436 .ndo_open = usbnet_open, 1437 .ndo_stop = usbnet_stop, 1438 .ndo_start_xmit = usbnet_start_xmit, 1439 .ndo_tx_timeout = usbnet_tx_timeout, 1440 .ndo_get_stats64 = usbnet_get_stats64, 1441 .ndo_change_mtu = smsc75xx_change_mtu, 1442 .ndo_set_mac_address = eth_mac_addr, 1443 .ndo_validate_addr = eth_validate_addr, 1444 .ndo_do_ioctl = smsc75xx_ioctl, 1445 .ndo_set_rx_mode = smsc75xx_set_multicast, 1446 .ndo_set_features = smsc75xx_set_features, 1447}; 1448 1449static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1450{ 1451 struct smsc75xx_priv *pdata = NULL; 1452 int ret; 1453 1454 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1455 1456 ret = usbnet_get_endpoints(dev, intf); 1457 if (ret < 0) { 1458 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1459 return ret; 1460 } 1461 1462 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1463 GFP_KERNEL); 1464 1465 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1466 if (!pdata) 1467 return -ENOMEM; 1468 1469 pdata->dev = dev; 1470 1471 spin_lock_init(&pdata->rfe_ctl_lock); 1472 mutex_init(&pdata->dataport_mutex); 1473 1474 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1475 1476 if (DEFAULT_TX_CSUM_ENABLE) 1477 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1478 1479 if (DEFAULT_RX_CSUM_ENABLE) 1480 dev->net->features |= NETIF_F_RXCSUM; 1481 1482 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1483 NETIF_F_RXCSUM; 1484 1485 ret = smsc75xx_wait_ready(dev, 0); 1486 if (ret < 0) { 1487 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1488 goto free_pdata; 1489 } 1490 1491 smsc75xx_init_mac_address(dev); 1492 1493 /* Init all registers */ 1494 ret = smsc75xx_reset(dev); 1495 if (ret < 0) { 1496 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1497 goto cancel_work; 1498 } 1499 1500 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1501 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1502 dev->net->flags |= IFF_MULTICAST; 1503 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1504 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1505 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; 1506 return 0; 1507 1508cancel_work: 1509 cancel_work_sync(&pdata->set_multicast); 1510free_pdata: 1511 kfree(pdata); 1512 dev->data[0] = 0; 1513 return ret; 1514} 1515 1516static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1517{ 1518 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1519 if (pdata) { 1520 cancel_work_sync(&pdata->set_multicast); 1521 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1522 kfree(pdata); 1523 dev->data[0] = 0; 1524 } 1525} 1526 1527static u16 smsc_crc(const u8 *buffer, size_t len) 1528{ 1529 return bitrev16(crc16(0xFFFF, buffer, len)); 1530} 1531 1532static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1533 u32 wuf_mask1) 1534{ 1535 int cfg_base = WUF_CFGX + filter * 4; 1536 int mask_base = WUF_MASKX + filter * 16; 1537 int ret; 1538 1539 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1540 if (ret < 0) { 1541 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1542 return ret; 1543 } 1544 1545 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1546 if (ret < 0) { 1547 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1548 return ret; 1549 } 1550 1551 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1552 if (ret < 0) { 1553 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1554 return ret; 1555 } 1556 1557 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1558 if (ret < 0) { 1559 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1560 return ret; 1561 } 1562 1563 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1564 if (ret < 0) { 1565 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1566 return ret; 1567 } 1568 1569 return 0; 1570} 1571 1572static int smsc75xx_enter_suspend0(struct usbnet *dev) 1573{ 1574 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1575 u32 val; 1576 int ret; 1577 1578 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1579 if (ret < 0) { 1580 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1581 return ret; 1582 } 1583 1584 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1585 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1586 1587 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1588 if (ret < 0) { 1589 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1590 return ret; 1591 } 1592 1593 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1594 1595 return 0; 1596} 1597 1598static int smsc75xx_enter_suspend1(struct usbnet *dev) 1599{ 1600 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1601 u32 val; 1602 int ret; 1603 1604 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1605 if (ret < 0) { 1606 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1607 return ret; 1608 } 1609 1610 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1611 val |= PMT_CTL_SUS_MODE_1; 1612 1613 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1614 if (ret < 0) { 1615 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1616 return ret; 1617 } 1618 1619 /* clear wol status, enable energy detection */ 1620 val &= ~PMT_CTL_WUPS; 1621 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1622 1623 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1624 if (ret < 0) { 1625 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1626 return ret; 1627 } 1628 1629 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1630 1631 return 0; 1632} 1633 1634static int smsc75xx_enter_suspend2(struct usbnet *dev) 1635{ 1636 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1637 u32 val; 1638 int ret; 1639 1640 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1641 if (ret < 0) { 1642 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1643 return ret; 1644 } 1645 1646 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1647 val |= PMT_CTL_SUS_MODE_2; 1648 1649 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1650 if (ret < 0) { 1651 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1652 return ret; 1653 } 1654 1655 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1656 1657 return 0; 1658} 1659 1660static int smsc75xx_enter_suspend3(struct usbnet *dev) 1661{ 1662 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1663 u32 val; 1664 int ret; 1665 1666 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1667 if (ret < 0) { 1668 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1669 return ret; 1670 } 1671 1672 if (val & FCT_RX_CTL_RXUSED) { 1673 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1674 return -EBUSY; 1675 } 1676 1677 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1678 if (ret < 0) { 1679 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1680 return ret; 1681 } 1682 1683 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1684 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1685 1686 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1687 if (ret < 0) { 1688 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1689 return ret; 1690 } 1691 1692 /* clear wol status */ 1693 val &= ~PMT_CTL_WUPS; 1694 val |= PMT_CTL_WUPS_WOL; 1695 1696 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1697 if (ret < 0) { 1698 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1699 return ret; 1700 } 1701 1702 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1703 1704 return 0; 1705} 1706 1707static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1708{ 1709 struct mii_if_info *mii = &dev->mii; 1710 int ret; 1711 1712 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1713 1714 /* read to clear */ 1715 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1716 if (ret < 0) { 1717 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1718 return ret; 1719 } 1720 1721 /* enable interrupt source */ 1722 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1723 if (ret < 0) { 1724 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1725 return ret; 1726 } 1727 1728 ret |= mask; 1729 1730 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1731 1732 return 0; 1733} 1734 1735static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1736{ 1737 struct mii_if_info *mii = &dev->mii; 1738 int ret; 1739 1740 /* first, a dummy read, needed to latch some MII phys */ 1741 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1742 if (ret < 0) { 1743 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1744 return ret; 1745 } 1746 1747 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1748 if (ret < 0) { 1749 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1750 return ret; 1751 } 1752 1753 return !!(ret & BMSR_LSTATUS); 1754} 1755 1756static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1757{ 1758 int ret; 1759 1760 if (!netif_running(dev->net)) { 1761 /* interface is ifconfig down so fully power down hw */ 1762 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1763 return smsc75xx_enter_suspend2(dev); 1764 } 1765 1766 if (!link_up) { 1767 /* link is down so enter EDPD mode */ 1768 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1769 1770 /* enable PHY wakeup events for if cable is attached */ 1771 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1772 PHY_INT_MASK_ANEG_COMP); 1773 if (ret < 0) { 1774 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1775 return ret; 1776 } 1777 1778 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1779 return smsc75xx_enter_suspend1(dev); 1780 } 1781 1782 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1783 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1784 PHY_INT_MASK_LINK_DOWN); 1785 if (ret < 0) { 1786 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1787 return ret; 1788 } 1789 1790 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1791 return smsc75xx_enter_suspend3(dev); 1792} 1793 1794static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1795{ 1796 struct usbnet *dev = usb_get_intfdata(intf); 1797 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1798 u32 val, link_up; 1799 int ret; 1800 1801 ret = usbnet_suspend(intf, message); 1802 if (ret < 0) { 1803 netdev_warn(dev->net, "usbnet_suspend error\n"); 1804 return ret; 1805 } 1806 1807 if (pdata->suspend_flags) { 1808 netdev_warn(dev->net, "error during last resume\n"); 1809 pdata->suspend_flags = 0; 1810 } 1811 1812 /* determine if link is up using only _nopm functions */ 1813 link_up = smsc75xx_link_ok_nopm(dev); 1814 1815 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1816 ret = smsc75xx_autosuspend(dev, link_up); 1817 goto done; 1818 } 1819 1820 /* if we get this far we're not autosuspending */ 1821 /* if no wol options set, or if link is down and we're not waking on 1822 * PHY activity, enter lowest power SUSPEND2 mode 1823 */ 1824 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1825 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1826 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1827 1828 /* disable energy detect (link up) & wake up events */ 1829 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1830 if (ret < 0) { 1831 netdev_warn(dev->net, "Error reading WUCSR\n"); 1832 goto done; 1833 } 1834 1835 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1836 1837 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1838 if (ret < 0) { 1839 netdev_warn(dev->net, "Error writing WUCSR\n"); 1840 goto done; 1841 } 1842 1843 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1844 if (ret < 0) { 1845 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1846 goto done; 1847 } 1848 1849 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1850 1851 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1852 if (ret < 0) { 1853 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1854 goto done; 1855 } 1856 1857 ret = smsc75xx_enter_suspend2(dev); 1858 goto done; 1859 } 1860 1861 if (pdata->wolopts & WAKE_PHY) { 1862 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1863 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1864 if (ret < 0) { 1865 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1866 goto done; 1867 } 1868 1869 /* if link is down then configure EDPD and enter SUSPEND1, 1870 * otherwise enter SUSPEND0 below 1871 */ 1872 if (!link_up) { 1873 struct mii_if_info *mii = &dev->mii; 1874 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1875 1876 /* enable energy detect power-down mode */ 1877 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1878 PHY_MODE_CTRL_STS); 1879 if (ret < 0) { 1880 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1881 goto done; 1882 } 1883 1884 ret |= MODE_CTRL_STS_EDPWRDOWN; 1885 1886 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1887 PHY_MODE_CTRL_STS, ret); 1888 1889 /* enter SUSPEND1 mode */ 1890 ret = smsc75xx_enter_suspend1(dev); 1891 goto done; 1892 } 1893 } 1894 1895 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1896 int i, filter = 0; 1897 1898 /* disable all filters */ 1899 for (i = 0; i < WUF_NUM; i++) { 1900 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1901 if (ret < 0) { 1902 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1903 goto done; 1904 } 1905 } 1906 1907 if (pdata->wolopts & WAKE_MCAST) { 1908 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1909 netdev_info(dev->net, "enabling multicast detection\n"); 1910 1911 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1912 | smsc_crc(mcast, 3); 1913 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1914 if (ret < 0) { 1915 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1916 goto done; 1917 } 1918 } 1919 1920 if (pdata->wolopts & WAKE_ARP) { 1921 const u8 arp[] = {0x08, 0x06}; 1922 netdev_info(dev->net, "enabling ARP detection\n"); 1923 1924 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1925 | smsc_crc(arp, 2); 1926 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1927 if (ret < 0) { 1928 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1929 goto done; 1930 } 1931 } 1932 1933 /* clear any pending pattern match packet status */ 1934 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1935 if (ret < 0) { 1936 netdev_warn(dev->net, "Error reading WUCSR\n"); 1937 goto done; 1938 } 1939 1940 val |= WUCSR_WUFR; 1941 1942 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1943 if (ret < 0) { 1944 netdev_warn(dev->net, "Error writing WUCSR\n"); 1945 goto done; 1946 } 1947 1948 netdev_info(dev->net, "enabling packet match detection\n"); 1949 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1950 if (ret < 0) { 1951 netdev_warn(dev->net, "Error reading WUCSR\n"); 1952 goto done; 1953 } 1954 1955 val |= WUCSR_WUEN; 1956 1957 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1958 if (ret < 0) { 1959 netdev_warn(dev->net, "Error writing WUCSR\n"); 1960 goto done; 1961 } 1962 } else { 1963 netdev_info(dev->net, "disabling packet match detection\n"); 1964 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1965 if (ret < 0) { 1966 netdev_warn(dev->net, "Error reading WUCSR\n"); 1967 goto done; 1968 } 1969 1970 val &= ~WUCSR_WUEN; 1971 1972 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1973 if (ret < 0) { 1974 netdev_warn(dev->net, "Error writing WUCSR\n"); 1975 goto done; 1976 } 1977 } 1978 1979 /* disable magic, bcast & unicast wakeup sources */ 1980 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1981 if (ret < 0) { 1982 netdev_warn(dev->net, "Error reading WUCSR\n"); 1983 goto done; 1984 } 1985 1986 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1987 1988 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1989 if (ret < 0) { 1990 netdev_warn(dev->net, "Error writing WUCSR\n"); 1991 goto done; 1992 } 1993 1994 if (pdata->wolopts & WAKE_PHY) { 1995 netdev_info(dev->net, "enabling PHY wakeup\n"); 1996 1997 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1998 if (ret < 0) { 1999 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2000 goto done; 2001 } 2002 2003 /* clear wol status, enable energy detection */ 2004 val &= ~PMT_CTL_WUPS; 2005 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 2006 2007 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2008 if (ret < 0) { 2009 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2010 goto done; 2011 } 2012 } 2013 2014 if (pdata->wolopts & WAKE_MAGIC) { 2015 netdev_info(dev->net, "enabling magic packet wakeup\n"); 2016 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2017 if (ret < 0) { 2018 netdev_warn(dev->net, "Error reading WUCSR\n"); 2019 goto done; 2020 } 2021 2022 /* clear any pending magic packet status */ 2023 val |= WUCSR_MPR | WUCSR_MPEN; 2024 2025 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2026 if (ret < 0) { 2027 netdev_warn(dev->net, "Error writing WUCSR\n"); 2028 goto done; 2029 } 2030 } 2031 2032 if (pdata->wolopts & WAKE_BCAST) { 2033 netdev_info(dev->net, "enabling broadcast detection\n"); 2034 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2035 if (ret < 0) { 2036 netdev_warn(dev->net, "Error reading WUCSR\n"); 2037 goto done; 2038 } 2039 2040 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 2041 2042 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2043 if (ret < 0) { 2044 netdev_warn(dev->net, "Error writing WUCSR\n"); 2045 goto done; 2046 } 2047 } 2048 2049 if (pdata->wolopts & WAKE_UCAST) { 2050 netdev_info(dev->net, "enabling unicast detection\n"); 2051 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2052 if (ret < 0) { 2053 netdev_warn(dev->net, "Error reading WUCSR\n"); 2054 goto done; 2055 } 2056 2057 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 2058 2059 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2060 if (ret < 0) { 2061 netdev_warn(dev->net, "Error writing WUCSR\n"); 2062 goto done; 2063 } 2064 } 2065 2066 /* enable receiver to enable frame reception */ 2067 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2068 if (ret < 0) { 2069 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2070 goto done; 2071 } 2072 2073 val |= MAC_RX_RXEN; 2074 2075 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2076 if (ret < 0) { 2077 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2078 goto done; 2079 } 2080 2081 /* some wol options are enabled, so enter SUSPEND0 */ 2082 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2083 ret = smsc75xx_enter_suspend0(dev); 2084 2085done: 2086 /* 2087 * TODO: resume() might need to handle the suspend failure 2088 * in system sleep 2089 */ 2090 if (ret && PMSG_IS_AUTO(message)) 2091 usbnet_resume(intf); 2092 return ret; 2093} 2094 2095static int smsc75xx_resume(struct usb_interface *intf) 2096{ 2097 struct usbnet *dev = usb_get_intfdata(intf); 2098 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2099 u8 suspend_flags = pdata->suspend_flags; 2100 int ret; 2101 u32 val; 2102 2103 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2104 2105 /* do this first to ensure it's cleared even in error case */ 2106 pdata->suspend_flags = 0; 2107 2108 if (suspend_flags & SUSPEND_ALLMODES) { 2109 /* Disable wakeup sources */ 2110 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2111 if (ret < 0) { 2112 netdev_warn(dev->net, "Error reading WUCSR\n"); 2113 return ret; 2114 } 2115 2116 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2117 | WUCSR_BCST_EN); 2118 2119 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2120 if (ret < 0) { 2121 netdev_warn(dev->net, "Error writing WUCSR\n"); 2122 return ret; 2123 } 2124 2125 /* clear wake-up status */ 2126 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2127 if (ret < 0) { 2128 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2129 return ret; 2130 } 2131 2132 val &= ~PMT_CTL_WOL_EN; 2133 val |= PMT_CTL_WUPS; 2134 2135 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2136 if (ret < 0) { 2137 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2138 return ret; 2139 } 2140 } 2141 2142 if (suspend_flags & SUSPEND_SUSPEND2) { 2143 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2144 2145 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2146 if (ret < 0) { 2147 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2148 return ret; 2149 } 2150 2151 val |= PMT_CTL_PHY_PWRUP; 2152 2153 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2154 if (ret < 0) { 2155 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2156 return ret; 2157 } 2158 } 2159 2160 ret = smsc75xx_wait_ready(dev, 1); 2161 if (ret < 0) { 2162 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2163 return ret; 2164 } 2165 2166 return usbnet_resume(intf); 2167} 2168 2169static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2170 u32 rx_cmd_a, u32 rx_cmd_b) 2171{ 2172 if (!(dev->net->features & NETIF_F_RXCSUM) || 2173 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2174 skb->ip_summed = CHECKSUM_NONE; 2175 } else { 2176 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2177 skb->ip_summed = CHECKSUM_COMPLETE; 2178 } 2179} 2180 2181static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2182{ 2183 /* This check is no longer done by usbnet */ 2184 if (skb->len < dev->net->hard_header_len) 2185 return 0; 2186 2187 while (skb->len > 0) { 2188 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2189 struct sk_buff *ax_skb; 2190 unsigned char *packet; 2191 2192 rx_cmd_a = get_unaligned_le32(skb->data); 2193 skb_pull(skb, 4); 2194 2195 rx_cmd_b = get_unaligned_le32(skb->data); 2196 skb_pull(skb, 4 + RXW_PADDING); 2197 2198 packet = skb->data; 2199 2200 /* get the packet length */ 2201 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2202 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2203 2204 if (unlikely(size > skb->len)) { 2205 netif_dbg(dev, rx_err, dev->net, 2206 "size err rx_cmd_a=0x%08x\n", 2207 rx_cmd_a); 2208 return 0; 2209 } 2210 2211 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2212 netif_dbg(dev, rx_err, dev->net, 2213 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2214 dev->net->stats.rx_errors++; 2215 dev->net->stats.rx_dropped++; 2216 2217 if (rx_cmd_a & RX_CMD_A_FCS) 2218 dev->net->stats.rx_crc_errors++; 2219 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2220 dev->net->stats.rx_frame_errors++; 2221 } else { 2222 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2223 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2224 netif_dbg(dev, rx_err, dev->net, 2225 "size err rx_cmd_a=0x%08x\n", 2226 rx_cmd_a); 2227 return 0; 2228 } 2229 2230 /* last frame in this batch */ 2231 if (skb->len == size) { 2232 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2233 rx_cmd_b); 2234 2235 skb_trim(skb, skb->len - 4); /* remove fcs */ 2236 skb->truesize = size + sizeof(struct sk_buff); 2237 2238 return 1; 2239 } 2240 2241 ax_skb = skb_clone(skb, GFP_ATOMIC); 2242 if (unlikely(!ax_skb)) { 2243 netdev_warn(dev->net, "Error allocating skb\n"); 2244 return 0; 2245 } 2246 2247 ax_skb->len = size; 2248 ax_skb->data = packet; 2249 skb_set_tail_pointer(ax_skb, size); 2250 2251 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2252 rx_cmd_b); 2253 2254 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2255 ax_skb->truesize = size + sizeof(struct sk_buff); 2256 2257 usbnet_skb_return(dev, ax_skb); 2258 } 2259 2260 skb_pull(skb, size); 2261 2262 /* padding bytes before the next frame starts */ 2263 if (skb->len) 2264 skb_pull(skb, align_count); 2265 } 2266 2267 return 1; 2268} 2269 2270static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2271 struct sk_buff *skb, gfp_t flags) 2272{ 2273 u32 tx_cmd_a, tx_cmd_b; 2274 void *ptr; 2275 2276 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { 2277 dev_kfree_skb_any(skb); 2278 return NULL; 2279 } 2280 2281 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2282 2283 if (skb->ip_summed == CHECKSUM_PARTIAL) 2284 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2285 2286 if (skb_is_gso(skb)) { 2287 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2288 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2289 2290 tx_cmd_a |= TX_CMD_A_LSO; 2291 } else { 2292 tx_cmd_b = 0; 2293 } 2294 2295 ptr = skb_push(skb, 8); 2296 put_unaligned_le32(tx_cmd_a, ptr); 2297 put_unaligned_le32(tx_cmd_b, ptr + 4); 2298 2299 return skb; 2300} 2301 2302static int smsc75xx_manage_power(struct usbnet *dev, int on) 2303{ 2304 dev->intf->needs_remote_wakeup = on; 2305 return 0; 2306} 2307 2308static const struct driver_info smsc75xx_info = { 2309 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2310 .bind = smsc75xx_bind, 2311 .unbind = smsc75xx_unbind, 2312 .link_reset = smsc75xx_link_reset, 2313 .reset = smsc75xx_reset, 2314 .rx_fixup = smsc75xx_rx_fixup, 2315 .tx_fixup = smsc75xx_tx_fixup, 2316 .status = smsc75xx_status, 2317 .manage_power = smsc75xx_manage_power, 2318 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2319}; 2320 2321static const struct usb_device_id products[] = { 2322 { 2323 /* SMSC7500 USB Gigabit Ethernet Device */ 2324 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2325 .driver_info = (unsigned long) &smsc75xx_info, 2326 }, 2327 { 2328 /* SMSC7500 USB Gigabit Ethernet Device */ 2329 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2330 .driver_info = (unsigned long) &smsc75xx_info, 2331 }, 2332 { }, /* END */ 2333}; 2334MODULE_DEVICE_TABLE(usb, products); 2335 2336static struct usb_driver smsc75xx_driver = { 2337 .name = SMSC_CHIPNAME, 2338 .id_table = products, 2339 .probe = usbnet_probe, 2340 .suspend = smsc75xx_suspend, 2341 .resume = smsc75xx_resume, 2342 .reset_resume = smsc75xx_resume, 2343 .disconnect = usbnet_disconnect, 2344 .disable_hub_initiated_lpm = 1, 2345 .supports_autosuspend = 1, 2346}; 2347 2348module_usb_driver(smsc75xx_driver); 2349 2350MODULE_AUTHOR("Nancy Lin"); 2351MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2352MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2353MODULE_LICENSE("GPL"); 2354