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_mii, 747 .set_link_ksettings = usbnet_set_link_ksettings_mii, 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 u8 addr[ETH_ALEN]; 763 764 /* maybe the boot loader passed the MAC address in devicetree */ 765 if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) { 766 if (is_valid_ether_addr(dev->net->dev_addr)) { 767 /* device tree values are valid so use them */ 768 netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n"); 769 return; 770 } 771 } 772 773 /* try reading mac address from EEPROM */ 774 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, addr) == 0) { 775 eth_hw_addr_set(dev->net, addr); 776 if (is_valid_ether_addr(dev->net->dev_addr)) { 777 /* eeprom values are valid so use them */ 778 netif_dbg(dev, ifup, dev->net, 779 "MAC address read from EEPROM\n"); 780 return; 781 } 782 } 783 784 /* no useful static MAC address found. generate a random one */ 785 eth_hw_addr_random(dev->net); 786 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 787} 788 789static int smsc75xx_set_mac_address(struct usbnet *dev) 790{ 791 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 792 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 793 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 794 795 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 796 if (ret < 0) { 797 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 798 return ret; 799 } 800 801 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 802 if (ret < 0) { 803 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 804 return ret; 805 } 806 807 addr_hi |= ADDR_FILTX_FB_VALID; 808 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 809 if (ret < 0) { 810 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 811 return ret; 812 } 813 814 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 815 if (ret < 0) 816 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 817 818 return ret; 819} 820 821static int smsc75xx_phy_initialize(struct usbnet *dev) 822{ 823 int bmcr, ret, timeout = 0; 824 825 /* Initialize MII structure */ 826 dev->mii.dev = dev->net; 827 dev->mii.mdio_read = smsc75xx_mdio_read; 828 dev->mii.mdio_write = smsc75xx_mdio_write; 829 dev->mii.phy_id_mask = 0x1f; 830 dev->mii.reg_num_mask = 0x1f; 831 dev->mii.supports_gmii = 1; 832 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 833 834 /* reset phy and wait for reset to complete */ 835 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 836 837 do { 838 msleep(10); 839 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 840 if (bmcr < 0) { 841 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 842 return bmcr; 843 } 844 timeout++; 845 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 846 847 if (timeout >= 100) { 848 netdev_warn(dev->net, "timeout on PHY Reset\n"); 849 return -EIO; 850 } 851 852 /* phy workaround for gig link */ 853 smsc75xx_phy_gig_workaround(dev); 854 855 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 856 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 857 ADVERTISE_PAUSE_ASYM); 858 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 859 ADVERTISE_1000FULL); 860 861 /* read and write to clear phy interrupt status */ 862 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 863 if (ret < 0) { 864 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 865 return ret; 866 } 867 868 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 869 870 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 871 PHY_INT_MASK_DEFAULT); 872 mii_nway_restart(&dev->mii); 873 874 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 875 return 0; 876} 877 878static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 879{ 880 int ret = 0; 881 u32 buf; 882 bool rxenabled; 883 884 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 885 if (ret < 0) { 886 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 887 return ret; 888 } 889 890 rxenabled = ((buf & MAC_RX_RXEN) != 0); 891 892 if (rxenabled) { 893 buf &= ~MAC_RX_RXEN; 894 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 895 if (ret < 0) { 896 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 897 return ret; 898 } 899 } 900 901 /* add 4 to size for FCS */ 902 buf &= ~MAC_RX_MAX_SIZE; 903 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 904 905 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 906 if (ret < 0) { 907 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 908 return ret; 909 } 910 911 if (rxenabled) { 912 buf |= MAC_RX_RXEN; 913 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 914 if (ret < 0) { 915 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 916 return ret; 917 } 918 } 919 920 return 0; 921} 922 923static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 924{ 925 struct usbnet *dev = netdev_priv(netdev); 926 int ret; 927 928 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 929 if (ret < 0) { 930 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 931 return ret; 932 } 933 934 return usbnet_change_mtu(netdev, new_mtu); 935} 936 937/* Enable or disable Rx checksum offload engine */ 938static int smsc75xx_set_features(struct net_device *netdev, 939 netdev_features_t features) 940{ 941 struct usbnet *dev = netdev_priv(netdev); 942 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 943 unsigned long flags; 944 int ret; 945 946 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 947 948 if (features & NETIF_F_RXCSUM) 949 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 950 else 951 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 952 953 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 954 /* it's racing here! */ 955 956 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 957 if (ret < 0) { 958 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 959 return ret; 960 } 961 return 0; 962} 963 964static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 965{ 966 int timeout = 0; 967 968 do { 969 u32 buf; 970 int ret; 971 972 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 973 974 if (ret < 0) { 975 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 976 return ret; 977 } 978 979 if (buf & PMT_CTL_DEV_RDY) 980 return 0; 981 982 msleep(10); 983 timeout++; 984 } while (timeout < 100); 985 986 netdev_warn(dev->net, "timeout waiting for device ready\n"); 987 return -EIO; 988} 989 990static int smsc75xx_phy_gig_workaround(struct usbnet *dev) 991{ 992 struct mii_if_info *mii = &dev->mii; 993 int ret = 0, timeout = 0; 994 u32 buf, link_up = 0; 995 996 /* Set the phy in Gig loopback */ 997 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040); 998 999 /* Wait for the link up */ 1000 do { 1001 link_up = smsc75xx_link_ok_nopm(dev); 1002 usleep_range(10000, 20000); 1003 timeout++; 1004 } while ((!link_up) && (timeout < 1000)); 1005 1006 if (timeout >= 1000) { 1007 netdev_warn(dev->net, "Timeout waiting for PHY link up\n"); 1008 return -EIO; 1009 } 1010 1011 /* phy reset */ 1012 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1013 if (ret < 0) { 1014 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1015 return ret; 1016 } 1017 1018 buf |= PMT_CTL_PHY_RST; 1019 1020 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1021 if (ret < 0) { 1022 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1023 return ret; 1024 } 1025 1026 timeout = 0; 1027 do { 1028 usleep_range(10000, 20000); 1029 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1030 if (ret < 0) { 1031 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", 1032 ret); 1033 return ret; 1034 } 1035 timeout++; 1036 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1037 1038 if (timeout >= 100) { 1039 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1040 return -EIO; 1041 } 1042 1043 return 0; 1044} 1045 1046static int smsc75xx_reset(struct usbnet *dev) 1047{ 1048 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1049 u32 buf; 1050 int ret = 0, timeout; 1051 1052 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 1053 1054 ret = smsc75xx_wait_ready(dev, 0); 1055 if (ret < 0) { 1056 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 1057 return ret; 1058 } 1059 1060 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1061 if (ret < 0) { 1062 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1063 return ret; 1064 } 1065 1066 buf |= HW_CFG_LRST; 1067 1068 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1069 if (ret < 0) { 1070 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1071 return ret; 1072 } 1073 1074 timeout = 0; 1075 do { 1076 msleep(10); 1077 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1078 if (ret < 0) { 1079 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1080 return ret; 1081 } 1082 timeout++; 1083 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1084 1085 if (timeout >= 100) { 1086 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1087 return -EIO; 1088 } 1089 1090 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1091 1092 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1093 if (ret < 0) { 1094 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1095 return ret; 1096 } 1097 1098 buf |= PMT_CTL_PHY_RST; 1099 1100 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1101 if (ret < 0) { 1102 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1103 return ret; 1104 } 1105 1106 timeout = 0; 1107 do { 1108 msleep(10); 1109 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1110 if (ret < 0) { 1111 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1112 return ret; 1113 } 1114 timeout++; 1115 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1116 1117 if (timeout >= 100) { 1118 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1119 return -EIO; 1120 } 1121 1122 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1123 1124 ret = smsc75xx_set_mac_address(dev); 1125 if (ret < 0) { 1126 netdev_warn(dev->net, "Failed to set mac address\n"); 1127 return ret; 1128 } 1129 1130 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1131 dev->net->dev_addr); 1132 1133 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1134 if (ret < 0) { 1135 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1136 return ret; 1137 } 1138 1139 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1140 buf); 1141 1142 buf |= HW_CFG_BIR; 1143 1144 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1145 if (ret < 0) { 1146 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1147 return ret; 1148 } 1149 1150 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1151 if (ret < 0) { 1152 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1153 return ret; 1154 } 1155 1156 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1157 buf); 1158 1159 if (!turbo_mode) { 1160 buf = 0; 1161 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1162 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1163 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1164 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1165 } else { 1166 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1167 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1168 } 1169 1170 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1171 (ulong)dev->rx_urb_size); 1172 1173 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1174 if (ret < 0) { 1175 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1176 return ret; 1177 } 1178 1179 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1180 if (ret < 0) { 1181 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1182 return ret; 1183 } 1184 1185 netif_dbg(dev, ifup, dev->net, 1186 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1187 1188 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1189 if (ret < 0) { 1190 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1191 return ret; 1192 } 1193 1194 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1195 if (ret < 0) { 1196 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1197 return ret; 1198 } 1199 1200 netif_dbg(dev, ifup, dev->net, 1201 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1202 1203 if (turbo_mode) { 1204 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1205 if (ret < 0) { 1206 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1207 return ret; 1208 } 1209 1210 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1211 1212 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1213 1214 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1215 if (ret < 0) { 1216 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1217 return ret; 1218 } 1219 1220 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1221 if (ret < 0) { 1222 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1223 return ret; 1224 } 1225 1226 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1227 } 1228 1229 /* set FIFO sizes */ 1230 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1231 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1232 if (ret < 0) { 1233 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1234 return ret; 1235 } 1236 1237 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1238 1239 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1240 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1241 if (ret < 0) { 1242 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1243 return ret; 1244 } 1245 1246 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1247 1248 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1249 if (ret < 0) { 1250 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1251 return ret; 1252 } 1253 1254 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1255 if (ret < 0) { 1256 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1257 return ret; 1258 } 1259 1260 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1261 1262 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1263 if (ret < 0) { 1264 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1265 return ret; 1266 } 1267 1268 /* only set default GPIO/LED settings if no EEPROM is detected */ 1269 if (!(buf & E2P_CMD_LOADED)) { 1270 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1271 if (ret < 0) { 1272 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1273 return ret; 1274 } 1275 1276 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1277 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1278 1279 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1280 if (ret < 0) { 1281 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1282 return ret; 1283 } 1284 } 1285 1286 ret = smsc75xx_write_reg(dev, FLOW, 0); 1287 if (ret < 0) { 1288 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1289 return ret; 1290 } 1291 1292 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1293 if (ret < 0) { 1294 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1295 return ret; 1296 } 1297 1298 /* Don't need rfe_ctl_lock during initialisation */ 1299 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1300 if (ret < 0) { 1301 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1302 return ret; 1303 } 1304 1305 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1306 1307 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1308 if (ret < 0) { 1309 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1310 return ret; 1311 } 1312 1313 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1314 if (ret < 0) { 1315 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1316 return ret; 1317 } 1318 1319 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1320 pdata->rfe_ctl); 1321 1322 /* Enable or disable checksum offload engines */ 1323 smsc75xx_set_features(dev->net, dev->net->features); 1324 1325 smsc75xx_set_multicast(dev->net); 1326 1327 ret = smsc75xx_phy_initialize(dev); 1328 if (ret < 0) { 1329 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1330 return ret; 1331 } 1332 1333 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1334 if (ret < 0) { 1335 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1336 return ret; 1337 } 1338 1339 /* enable PHY interrupts */ 1340 buf |= INT_ENP_PHY_INT; 1341 1342 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1343 if (ret < 0) { 1344 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1345 return ret; 1346 } 1347 1348 /* allow mac to detect speed and duplex from phy */ 1349 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1350 if (ret < 0) { 1351 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1352 return ret; 1353 } 1354 1355 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1356 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1357 if (ret < 0) { 1358 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1359 return ret; 1360 } 1361 1362 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1363 if (ret < 0) { 1364 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1365 return ret; 1366 } 1367 1368 buf |= MAC_TX_TXEN; 1369 1370 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1371 if (ret < 0) { 1372 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1373 return ret; 1374 } 1375 1376 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1377 1378 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1379 if (ret < 0) { 1380 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1381 return ret; 1382 } 1383 1384 buf |= FCT_TX_CTL_EN; 1385 1386 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1387 if (ret < 0) { 1388 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1389 return ret; 1390 } 1391 1392 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1393 1394 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1395 if (ret < 0) { 1396 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1397 return ret; 1398 } 1399 1400 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1401 if (ret < 0) { 1402 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1403 return ret; 1404 } 1405 1406 buf |= MAC_RX_RXEN; 1407 1408 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1409 if (ret < 0) { 1410 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1411 return ret; 1412 } 1413 1414 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1415 1416 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1417 if (ret < 0) { 1418 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1419 return ret; 1420 } 1421 1422 buf |= FCT_RX_CTL_EN; 1423 1424 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1425 if (ret < 0) { 1426 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1427 return ret; 1428 } 1429 1430 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1431 1432 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1433 return 0; 1434} 1435 1436static const struct net_device_ops smsc75xx_netdev_ops = { 1437 .ndo_open = usbnet_open, 1438 .ndo_stop = usbnet_stop, 1439 .ndo_start_xmit = usbnet_start_xmit, 1440 .ndo_tx_timeout = usbnet_tx_timeout, 1441 .ndo_get_stats64 = dev_get_tstats64, 1442 .ndo_change_mtu = smsc75xx_change_mtu, 1443 .ndo_set_mac_address = eth_mac_addr, 1444 .ndo_validate_addr = eth_validate_addr, 1445 .ndo_eth_ioctl = smsc75xx_ioctl, 1446 .ndo_set_rx_mode = smsc75xx_set_multicast, 1447 .ndo_set_features = smsc75xx_set_features, 1448}; 1449 1450static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1451{ 1452 struct smsc75xx_priv *pdata = NULL; 1453 int ret; 1454 1455 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1456 1457 ret = usbnet_get_endpoints(dev, intf); 1458 if (ret < 0) { 1459 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1460 return ret; 1461 } 1462 1463 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1464 GFP_KERNEL); 1465 1466 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1467 if (!pdata) 1468 return -ENOMEM; 1469 1470 pdata->dev = dev; 1471 1472 spin_lock_init(&pdata->rfe_ctl_lock); 1473 mutex_init(&pdata->dataport_mutex); 1474 1475 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1476 1477 if (DEFAULT_TX_CSUM_ENABLE) 1478 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1479 1480 if (DEFAULT_RX_CSUM_ENABLE) 1481 dev->net->features |= NETIF_F_RXCSUM; 1482 1483 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1484 NETIF_F_RXCSUM; 1485 1486 ret = smsc75xx_wait_ready(dev, 0); 1487 if (ret < 0) { 1488 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1489 goto free_pdata; 1490 } 1491 1492 smsc75xx_init_mac_address(dev); 1493 1494 /* Init all registers */ 1495 ret = smsc75xx_reset(dev); 1496 if (ret < 0) { 1497 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1498 goto cancel_work; 1499 } 1500 1501 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1502 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1503 dev->net->flags |= IFF_MULTICAST; 1504 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1505 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1506 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; 1507 return 0; 1508 1509cancel_work: 1510 cancel_work_sync(&pdata->set_multicast); 1511free_pdata: 1512 kfree(pdata); 1513 dev->data[0] = 0; 1514 return ret; 1515} 1516 1517static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1518{ 1519 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1520 if (pdata) { 1521 cancel_work_sync(&pdata->set_multicast); 1522 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1523 kfree(pdata); 1524 dev->data[0] = 0; 1525 } 1526} 1527 1528static u16 smsc_crc(const u8 *buffer, size_t len) 1529{ 1530 return bitrev16(crc16(0xFFFF, buffer, len)); 1531} 1532 1533static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1534 u32 wuf_mask1) 1535{ 1536 int cfg_base = WUF_CFGX + filter * 4; 1537 int mask_base = WUF_MASKX + filter * 16; 1538 int ret; 1539 1540 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1541 if (ret < 0) { 1542 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1543 return ret; 1544 } 1545 1546 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1547 if (ret < 0) { 1548 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1549 return ret; 1550 } 1551 1552 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1553 if (ret < 0) { 1554 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1555 return ret; 1556 } 1557 1558 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1559 if (ret < 0) { 1560 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1561 return ret; 1562 } 1563 1564 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1565 if (ret < 0) { 1566 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1567 return ret; 1568 } 1569 1570 return 0; 1571} 1572 1573static int smsc75xx_enter_suspend0(struct usbnet *dev) 1574{ 1575 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1576 u32 val; 1577 int ret; 1578 1579 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1580 if (ret < 0) { 1581 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1582 return ret; 1583 } 1584 1585 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1586 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1587 1588 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1589 if (ret < 0) { 1590 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1591 return ret; 1592 } 1593 1594 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1595 1596 return 0; 1597} 1598 1599static int smsc75xx_enter_suspend1(struct usbnet *dev) 1600{ 1601 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1602 u32 val; 1603 int ret; 1604 1605 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1606 if (ret < 0) { 1607 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1608 return ret; 1609 } 1610 1611 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1612 val |= PMT_CTL_SUS_MODE_1; 1613 1614 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1615 if (ret < 0) { 1616 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1617 return ret; 1618 } 1619 1620 /* clear wol status, enable energy detection */ 1621 val &= ~PMT_CTL_WUPS; 1622 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1623 1624 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1625 if (ret < 0) { 1626 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1627 return ret; 1628 } 1629 1630 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1631 1632 return 0; 1633} 1634 1635static int smsc75xx_enter_suspend2(struct usbnet *dev) 1636{ 1637 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1638 u32 val; 1639 int ret; 1640 1641 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1642 if (ret < 0) { 1643 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1644 return ret; 1645 } 1646 1647 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1648 val |= PMT_CTL_SUS_MODE_2; 1649 1650 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1651 if (ret < 0) { 1652 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1653 return ret; 1654 } 1655 1656 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1657 1658 return 0; 1659} 1660 1661static int smsc75xx_enter_suspend3(struct usbnet *dev) 1662{ 1663 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1664 u32 val; 1665 int ret; 1666 1667 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1668 if (ret < 0) { 1669 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1670 return ret; 1671 } 1672 1673 if (val & FCT_RX_CTL_RXUSED) { 1674 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1675 return -EBUSY; 1676 } 1677 1678 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1679 if (ret < 0) { 1680 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1681 return ret; 1682 } 1683 1684 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1685 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1686 1687 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1688 if (ret < 0) { 1689 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1690 return ret; 1691 } 1692 1693 /* clear wol status */ 1694 val &= ~PMT_CTL_WUPS; 1695 val |= PMT_CTL_WUPS_WOL; 1696 1697 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1698 if (ret < 0) { 1699 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1700 return ret; 1701 } 1702 1703 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1704 1705 return 0; 1706} 1707 1708static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1709{ 1710 struct mii_if_info *mii = &dev->mii; 1711 int ret; 1712 1713 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1714 1715 /* read to clear */ 1716 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1717 if (ret < 0) { 1718 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1719 return ret; 1720 } 1721 1722 /* enable interrupt source */ 1723 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1724 if (ret < 0) { 1725 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1726 return ret; 1727 } 1728 1729 ret |= mask; 1730 1731 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1732 1733 return 0; 1734} 1735 1736static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1737{ 1738 struct mii_if_info *mii = &dev->mii; 1739 int ret; 1740 1741 /* first, a dummy read, needed to latch some MII phys */ 1742 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1743 if (ret < 0) { 1744 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1745 return ret; 1746 } 1747 1748 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1749 if (ret < 0) { 1750 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1751 return ret; 1752 } 1753 1754 return !!(ret & BMSR_LSTATUS); 1755} 1756 1757static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1758{ 1759 int ret; 1760 1761 if (!netif_running(dev->net)) { 1762 /* interface is ifconfig down so fully power down hw */ 1763 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1764 return smsc75xx_enter_suspend2(dev); 1765 } 1766 1767 if (!link_up) { 1768 /* link is down so enter EDPD mode */ 1769 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1770 1771 /* enable PHY wakeup events for if cable is attached */ 1772 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1773 PHY_INT_MASK_ANEG_COMP); 1774 if (ret < 0) { 1775 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1776 return ret; 1777 } 1778 1779 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1780 return smsc75xx_enter_suspend1(dev); 1781 } 1782 1783 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1784 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1785 PHY_INT_MASK_LINK_DOWN); 1786 if (ret < 0) { 1787 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1788 return ret; 1789 } 1790 1791 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1792 return smsc75xx_enter_suspend3(dev); 1793} 1794 1795static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1796{ 1797 struct usbnet *dev = usb_get_intfdata(intf); 1798 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1799 u32 val, link_up; 1800 int ret; 1801 1802 ret = usbnet_suspend(intf, message); 1803 if (ret < 0) { 1804 netdev_warn(dev->net, "usbnet_suspend error\n"); 1805 return ret; 1806 } 1807 1808 if (pdata->suspend_flags) { 1809 netdev_warn(dev->net, "error during last resume\n"); 1810 pdata->suspend_flags = 0; 1811 } 1812 1813 /* determine if link is up using only _nopm functions */ 1814 link_up = smsc75xx_link_ok_nopm(dev); 1815 1816 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1817 ret = smsc75xx_autosuspend(dev, link_up); 1818 goto done; 1819 } 1820 1821 /* if we get this far we're not autosuspending */ 1822 /* if no wol options set, or if link is down and we're not waking on 1823 * PHY activity, enter lowest power SUSPEND2 mode 1824 */ 1825 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1826 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1827 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1828 1829 /* disable energy detect (link up) & wake up events */ 1830 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1831 if (ret < 0) { 1832 netdev_warn(dev->net, "Error reading WUCSR\n"); 1833 goto done; 1834 } 1835 1836 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1837 1838 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1839 if (ret < 0) { 1840 netdev_warn(dev->net, "Error writing WUCSR\n"); 1841 goto done; 1842 } 1843 1844 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1845 if (ret < 0) { 1846 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1847 goto done; 1848 } 1849 1850 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1851 1852 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1853 if (ret < 0) { 1854 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1855 goto done; 1856 } 1857 1858 ret = smsc75xx_enter_suspend2(dev); 1859 goto done; 1860 } 1861 1862 if (pdata->wolopts & WAKE_PHY) { 1863 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1864 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1865 if (ret < 0) { 1866 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1867 goto done; 1868 } 1869 1870 /* if link is down then configure EDPD and enter SUSPEND1, 1871 * otherwise enter SUSPEND0 below 1872 */ 1873 if (!link_up) { 1874 struct mii_if_info *mii = &dev->mii; 1875 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1876 1877 /* enable energy detect power-down mode */ 1878 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1879 PHY_MODE_CTRL_STS); 1880 if (ret < 0) { 1881 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1882 goto done; 1883 } 1884 1885 ret |= MODE_CTRL_STS_EDPWRDOWN; 1886 1887 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1888 PHY_MODE_CTRL_STS, ret); 1889 1890 /* enter SUSPEND1 mode */ 1891 ret = smsc75xx_enter_suspend1(dev); 1892 goto done; 1893 } 1894 } 1895 1896 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1897 int i, filter = 0; 1898 1899 /* disable all filters */ 1900 for (i = 0; i < WUF_NUM; i++) { 1901 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1902 if (ret < 0) { 1903 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1904 goto done; 1905 } 1906 } 1907 1908 if (pdata->wolopts & WAKE_MCAST) { 1909 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1910 netdev_info(dev->net, "enabling multicast detection\n"); 1911 1912 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1913 | smsc_crc(mcast, 3); 1914 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1915 if (ret < 0) { 1916 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1917 goto done; 1918 } 1919 } 1920 1921 if (pdata->wolopts & WAKE_ARP) { 1922 const u8 arp[] = {0x08, 0x06}; 1923 netdev_info(dev->net, "enabling ARP detection\n"); 1924 1925 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1926 | smsc_crc(arp, 2); 1927 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1928 if (ret < 0) { 1929 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1930 goto done; 1931 } 1932 } 1933 1934 /* clear any pending pattern match packet status */ 1935 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1936 if (ret < 0) { 1937 netdev_warn(dev->net, "Error reading WUCSR\n"); 1938 goto done; 1939 } 1940 1941 val |= WUCSR_WUFR; 1942 1943 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1944 if (ret < 0) { 1945 netdev_warn(dev->net, "Error writing WUCSR\n"); 1946 goto done; 1947 } 1948 1949 netdev_info(dev->net, "enabling packet match detection\n"); 1950 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1951 if (ret < 0) { 1952 netdev_warn(dev->net, "Error reading WUCSR\n"); 1953 goto done; 1954 } 1955 1956 val |= WUCSR_WUEN; 1957 1958 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1959 if (ret < 0) { 1960 netdev_warn(dev->net, "Error writing WUCSR\n"); 1961 goto done; 1962 } 1963 } else { 1964 netdev_info(dev->net, "disabling packet match detection\n"); 1965 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1966 if (ret < 0) { 1967 netdev_warn(dev->net, "Error reading WUCSR\n"); 1968 goto done; 1969 } 1970 1971 val &= ~WUCSR_WUEN; 1972 1973 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1974 if (ret < 0) { 1975 netdev_warn(dev->net, "Error writing WUCSR\n"); 1976 goto done; 1977 } 1978 } 1979 1980 /* disable magic, bcast & unicast wakeup sources */ 1981 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1982 if (ret < 0) { 1983 netdev_warn(dev->net, "Error reading WUCSR\n"); 1984 goto done; 1985 } 1986 1987 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1988 1989 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1990 if (ret < 0) { 1991 netdev_warn(dev->net, "Error writing WUCSR\n"); 1992 goto done; 1993 } 1994 1995 if (pdata->wolopts & WAKE_PHY) { 1996 netdev_info(dev->net, "enabling PHY wakeup\n"); 1997 1998 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1999 if (ret < 0) { 2000 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2001 goto done; 2002 } 2003 2004 /* clear wol status, enable energy detection */ 2005 val &= ~PMT_CTL_WUPS; 2006 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 2007 2008 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2009 if (ret < 0) { 2010 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2011 goto done; 2012 } 2013 } 2014 2015 if (pdata->wolopts & WAKE_MAGIC) { 2016 netdev_info(dev->net, "enabling magic packet wakeup\n"); 2017 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2018 if (ret < 0) { 2019 netdev_warn(dev->net, "Error reading WUCSR\n"); 2020 goto done; 2021 } 2022 2023 /* clear any pending magic packet status */ 2024 val |= WUCSR_MPR | WUCSR_MPEN; 2025 2026 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2027 if (ret < 0) { 2028 netdev_warn(dev->net, "Error writing WUCSR\n"); 2029 goto done; 2030 } 2031 } 2032 2033 if (pdata->wolopts & WAKE_BCAST) { 2034 netdev_info(dev->net, "enabling broadcast detection\n"); 2035 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2036 if (ret < 0) { 2037 netdev_warn(dev->net, "Error reading WUCSR\n"); 2038 goto done; 2039 } 2040 2041 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 2042 2043 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2044 if (ret < 0) { 2045 netdev_warn(dev->net, "Error writing WUCSR\n"); 2046 goto done; 2047 } 2048 } 2049 2050 if (pdata->wolopts & WAKE_UCAST) { 2051 netdev_info(dev->net, "enabling unicast detection\n"); 2052 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2053 if (ret < 0) { 2054 netdev_warn(dev->net, "Error reading WUCSR\n"); 2055 goto done; 2056 } 2057 2058 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 2059 2060 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2061 if (ret < 0) { 2062 netdev_warn(dev->net, "Error writing WUCSR\n"); 2063 goto done; 2064 } 2065 } 2066 2067 /* enable receiver to enable frame reception */ 2068 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2069 if (ret < 0) { 2070 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2071 goto done; 2072 } 2073 2074 val |= MAC_RX_RXEN; 2075 2076 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2077 if (ret < 0) { 2078 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2079 goto done; 2080 } 2081 2082 /* some wol options are enabled, so enter SUSPEND0 */ 2083 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2084 ret = smsc75xx_enter_suspend0(dev); 2085 2086done: 2087 /* 2088 * TODO: resume() might need to handle the suspend failure 2089 * in system sleep 2090 */ 2091 if (ret && PMSG_IS_AUTO(message)) 2092 usbnet_resume(intf); 2093 return ret; 2094} 2095 2096static int smsc75xx_resume(struct usb_interface *intf) 2097{ 2098 struct usbnet *dev = usb_get_intfdata(intf); 2099 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2100 u8 suspend_flags = pdata->suspend_flags; 2101 int ret; 2102 u32 val; 2103 2104 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2105 2106 /* do this first to ensure it's cleared even in error case */ 2107 pdata->suspend_flags = 0; 2108 2109 if (suspend_flags & SUSPEND_ALLMODES) { 2110 /* Disable wakeup sources */ 2111 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2112 if (ret < 0) { 2113 netdev_warn(dev->net, "Error reading WUCSR\n"); 2114 return ret; 2115 } 2116 2117 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2118 | WUCSR_BCST_EN); 2119 2120 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2121 if (ret < 0) { 2122 netdev_warn(dev->net, "Error writing WUCSR\n"); 2123 return ret; 2124 } 2125 2126 /* clear wake-up status */ 2127 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2128 if (ret < 0) { 2129 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2130 return ret; 2131 } 2132 2133 val &= ~PMT_CTL_WOL_EN; 2134 val |= PMT_CTL_WUPS; 2135 2136 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2137 if (ret < 0) { 2138 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2139 return ret; 2140 } 2141 } 2142 2143 if (suspend_flags & SUSPEND_SUSPEND2) { 2144 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2145 2146 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2147 if (ret < 0) { 2148 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2149 return ret; 2150 } 2151 2152 val |= PMT_CTL_PHY_PWRUP; 2153 2154 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2155 if (ret < 0) { 2156 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2157 return ret; 2158 } 2159 } 2160 2161 ret = smsc75xx_wait_ready(dev, 1); 2162 if (ret < 0) { 2163 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2164 return ret; 2165 } 2166 2167 return usbnet_resume(intf); 2168} 2169 2170static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2171 u32 rx_cmd_a, u32 rx_cmd_b) 2172{ 2173 if (!(dev->net->features & NETIF_F_RXCSUM) || 2174 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2175 skb->ip_summed = CHECKSUM_NONE; 2176 } else { 2177 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2178 skb->ip_summed = CHECKSUM_COMPLETE; 2179 } 2180} 2181 2182static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2183{ 2184 /* This check is no longer done by usbnet */ 2185 if (skb->len < dev->net->hard_header_len) 2186 return 0; 2187 2188 while (skb->len > 0) { 2189 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2190 struct sk_buff *ax_skb; 2191 unsigned char *packet; 2192 2193 rx_cmd_a = get_unaligned_le32(skb->data); 2194 skb_pull(skb, 4); 2195 2196 rx_cmd_b = get_unaligned_le32(skb->data); 2197 skb_pull(skb, 4 + RXW_PADDING); 2198 2199 packet = skb->data; 2200 2201 /* get the packet length */ 2202 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2203 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2204 2205 if (unlikely(size > skb->len)) { 2206 netif_dbg(dev, rx_err, dev->net, 2207 "size err rx_cmd_a=0x%08x\n", 2208 rx_cmd_a); 2209 return 0; 2210 } 2211 2212 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2213 netif_dbg(dev, rx_err, dev->net, 2214 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2215 dev->net->stats.rx_errors++; 2216 dev->net->stats.rx_dropped++; 2217 2218 if (rx_cmd_a & RX_CMD_A_FCS) 2219 dev->net->stats.rx_crc_errors++; 2220 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2221 dev->net->stats.rx_frame_errors++; 2222 } else { 2223 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2224 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2225 netif_dbg(dev, rx_err, dev->net, 2226 "size err rx_cmd_a=0x%08x\n", 2227 rx_cmd_a); 2228 return 0; 2229 } 2230 2231 /* last frame in this batch */ 2232 if (skb->len == size) { 2233 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2234 rx_cmd_b); 2235 2236 skb_trim(skb, skb->len - 4); /* remove fcs */ 2237 skb->truesize = size + sizeof(struct sk_buff); 2238 2239 return 1; 2240 } 2241 2242 ax_skb = skb_clone(skb, GFP_ATOMIC); 2243 if (unlikely(!ax_skb)) { 2244 netdev_warn(dev->net, "Error allocating skb\n"); 2245 return 0; 2246 } 2247 2248 ax_skb->len = size; 2249 ax_skb->data = packet; 2250 skb_set_tail_pointer(ax_skb, size); 2251 2252 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2253 rx_cmd_b); 2254 2255 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2256 ax_skb->truesize = size + sizeof(struct sk_buff); 2257 2258 usbnet_skb_return(dev, ax_skb); 2259 } 2260 2261 skb_pull(skb, size); 2262 2263 /* padding bytes before the next frame starts */ 2264 if (skb->len) 2265 skb_pull(skb, align_count); 2266 } 2267 2268 return 1; 2269} 2270 2271static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2272 struct sk_buff *skb, gfp_t flags) 2273{ 2274 u32 tx_cmd_a, tx_cmd_b; 2275 void *ptr; 2276 2277 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { 2278 dev_kfree_skb_any(skb); 2279 return NULL; 2280 } 2281 2282 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2283 2284 if (skb->ip_summed == CHECKSUM_PARTIAL) 2285 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2286 2287 if (skb_is_gso(skb)) { 2288 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2289 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2290 2291 tx_cmd_a |= TX_CMD_A_LSO; 2292 } else { 2293 tx_cmd_b = 0; 2294 } 2295 2296 ptr = skb_push(skb, 8); 2297 put_unaligned_le32(tx_cmd_a, ptr); 2298 put_unaligned_le32(tx_cmd_b, ptr + 4); 2299 2300 return skb; 2301} 2302 2303static int smsc75xx_manage_power(struct usbnet *dev, int on) 2304{ 2305 dev->intf->needs_remote_wakeup = on; 2306 return 0; 2307} 2308 2309static const struct driver_info smsc75xx_info = { 2310 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2311 .bind = smsc75xx_bind, 2312 .unbind = smsc75xx_unbind, 2313 .link_reset = smsc75xx_link_reset, 2314 .reset = smsc75xx_reset, 2315 .rx_fixup = smsc75xx_rx_fixup, 2316 .tx_fixup = smsc75xx_tx_fixup, 2317 .status = smsc75xx_status, 2318 .manage_power = smsc75xx_manage_power, 2319 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2320}; 2321 2322static const struct usb_device_id products[] = { 2323 { 2324 /* SMSC7500 USB Gigabit Ethernet Device */ 2325 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2326 .driver_info = (unsigned long) &smsc75xx_info, 2327 }, 2328 { 2329 /* SMSC7500 USB Gigabit Ethernet Device */ 2330 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2331 .driver_info = (unsigned long) &smsc75xx_info, 2332 }, 2333 { }, /* END */ 2334}; 2335MODULE_DEVICE_TABLE(usb, products); 2336 2337static struct usb_driver smsc75xx_driver = { 2338 .name = SMSC_CHIPNAME, 2339 .id_table = products, 2340 .probe = usbnet_probe, 2341 .suspend = smsc75xx_suspend, 2342 .resume = smsc75xx_resume, 2343 .reset_resume = smsc75xx_resume, 2344 .disconnect = usbnet_disconnect, 2345 .disable_hub_initiated_lpm = 1, 2346 .supports_autosuspend = 1, 2347}; 2348 2349module_usb_driver(smsc75xx_driver); 2350 2351MODULE_AUTHOR("Nancy Lin"); 2352MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2353MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2354MODULE_LICENSE("GPL"); 2355