1 /*************************************************************************** 2 * 3 * Copyright (C) 2007-2008 SMSC 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, see <http://www.gnu.org/licenses/>. 17 * 18 *****************************************************************************/ 19 20 #include <linux/module.h> 21 #include <linux/kmod.h> 22 #include <linux/init.h> 23 #include <linux/netdevice.h> 24 #include <linux/etherdevice.h> 25 #include <linux/ethtool.h> 26 #include <linux/mii.h> 27 #include <linux/usb.h> 28 #include <linux/bitrev.h> 29 #include <linux/crc16.h> 30 #include <linux/crc32.h> 31 #include <linux/usb/usbnet.h> 32 #include <linux/slab.h> 33 #include "smsc95xx.h" 34 35 #define SMSC_CHIPNAME "smsc95xx" 36 #define SMSC_DRIVER_VERSION "1.0.4" 37 #define HS_USB_PKT_SIZE (512) 38 #define FS_USB_PKT_SIZE (64) 39 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 40 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 41 #define DEFAULT_BULK_IN_DELAY (0x00002000) 42 #define MAX_SINGLE_PACKET_SIZE (2048) 43 #define LAN95XX_EEPROM_MAGIC (0x9500) 44 #define EEPROM_MAC_OFFSET (0x01) 45 #define DEFAULT_TX_CSUM_ENABLE (true) 46 #define DEFAULT_RX_CSUM_ENABLE (true) 47 #define SMSC95XX_INTERNAL_PHY_ID (1) 48 #define SMSC95XX_TX_OVERHEAD (8) 49 #define SMSC95XX_TX_OVERHEAD_CSUM (12) 50 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 51 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 52 53 #define FEATURE_8_WAKEUP_FILTERS (0x01) 54 #define FEATURE_PHY_NLP_CROSSOVER (0x02) 55 #define FEATURE_REMOTE_WAKEUP (0x04) 56 57 #define SUSPEND_SUSPEND0 (0x01) 58 #define SUSPEND_SUSPEND1 (0x02) 59 #define SUSPEND_SUSPEND2 (0x04) 60 #define SUSPEND_SUSPEND3 (0x08) 61 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 62 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 63 64 struct smsc95xx_priv { 65 u32 mac_cr; 66 u32 hash_hi; 67 u32 hash_lo; 68 u32 wolopts; 69 spinlock_t mac_cr_lock; 70 u8 features; 71 u8 suspend_flags; 72 }; 73 74 static bool turbo_mode = true; 75 module_param(turbo_mode, bool, 0644); 76 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 77 78 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index, 79 u32 *data, int in_pm) 80 { 81 u32 buf; 82 int ret; 83 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 84 85 BUG_ON(!dev); 86 87 if (!in_pm) 88 fn = usbnet_read_cmd; 89 else 90 fn = usbnet_read_cmd_nopm; 91 92 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 93 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 94 0, index, &buf, 4); 95 if (unlikely(ret < 0)) 96 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 97 index, ret); 98 99 le32_to_cpus(&buf); 100 *data = buf; 101 102 return ret; 103 } 104 105 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index, 106 u32 data, int in_pm) 107 { 108 u32 buf; 109 int ret; 110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 111 112 BUG_ON(!dev); 113 114 if (!in_pm) 115 fn = usbnet_write_cmd; 116 else 117 fn = usbnet_write_cmd_nopm; 118 119 buf = data; 120 cpu_to_le32s(&buf); 121 122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 124 0, index, &buf, 4); 125 if (unlikely(ret < 0)) 126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 127 index, ret); 128 129 return ret; 130 } 131 132 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index, 133 u32 *data) 134 { 135 return __smsc95xx_read_reg(dev, index, data, 1); 136 } 137 138 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index, 139 u32 data) 140 { 141 return __smsc95xx_write_reg(dev, index, data, 1); 142 } 143 144 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, 145 u32 *data) 146 { 147 return __smsc95xx_read_reg(dev, index, data, 0); 148 } 149 150 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, 151 u32 data) 152 { 153 return __smsc95xx_write_reg(dev, index, data, 0); 154 } 155 156 /* Loop until the read is completed with timeout 157 * called with phy_mutex held */ 158 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev, 159 int in_pm) 160 { 161 unsigned long start_time = jiffies; 162 u32 val; 163 int ret; 164 165 do { 166 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm); 167 if (ret < 0) { 168 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 169 return ret; 170 } 171 172 if (!(val & MII_BUSY_)) 173 return 0; 174 } while (!time_after(jiffies, start_time + HZ)); 175 176 return -EIO; 177 } 178 179 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 180 int in_pm) 181 { 182 struct usbnet *dev = netdev_priv(netdev); 183 u32 val, addr; 184 int ret; 185 186 mutex_lock(&dev->phy_mutex); 187 188 /* confirm MII not busy */ 189 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 190 if (ret < 0) { 191 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); 192 goto done; 193 } 194 195 /* set the address, index & direction (read from PHY) */ 196 phy_id &= dev->mii.phy_id_mask; 197 idx &= dev->mii.reg_num_mask; 198 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_; 199 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 200 if (ret < 0) { 201 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 202 goto done; 203 } 204 205 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 206 if (ret < 0) { 207 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 208 goto done; 209 } 210 211 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm); 212 if (ret < 0) { 213 netdev_warn(dev->net, "Error reading MII_DATA\n"); 214 goto done; 215 } 216 217 ret = (u16)(val & 0xFFFF); 218 219 done: 220 mutex_unlock(&dev->phy_mutex); 221 return ret; 222 } 223 224 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id, 225 int idx, int regval, int in_pm) 226 { 227 struct usbnet *dev = netdev_priv(netdev); 228 u32 val, addr; 229 int ret; 230 231 mutex_lock(&dev->phy_mutex); 232 233 /* confirm MII not busy */ 234 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 235 if (ret < 0) { 236 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); 237 goto done; 238 } 239 240 val = regval; 241 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm); 242 if (ret < 0) { 243 netdev_warn(dev->net, "Error writing MII_DATA\n"); 244 goto done; 245 } 246 247 /* set the address, index & direction (write to PHY) */ 248 phy_id &= dev->mii.phy_id_mask; 249 idx &= dev->mii.reg_num_mask; 250 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_; 251 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 252 if (ret < 0) { 253 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 254 goto done; 255 } 256 257 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 258 if (ret < 0) { 259 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 260 goto done; 261 } 262 263 done: 264 mutex_unlock(&dev->phy_mutex); 265 } 266 267 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 268 int idx) 269 { 270 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1); 271 } 272 273 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 274 int idx, int regval) 275 { 276 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1); 277 } 278 279 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 280 { 281 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0); 282 } 283 284 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 285 int regval) 286 { 287 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0); 288 } 289 290 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) 291 { 292 unsigned long start_time = jiffies; 293 u32 val; 294 int ret; 295 296 do { 297 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 298 if (ret < 0) { 299 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 300 return ret; 301 } 302 303 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) 304 break; 305 udelay(40); 306 } while (!time_after(jiffies, start_time + HZ)); 307 308 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { 309 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 310 return -EIO; 311 } 312 313 return 0; 314 } 315 316 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) 317 { 318 unsigned long start_time = jiffies; 319 u32 val; 320 int ret; 321 322 do { 323 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 324 if (ret < 0) { 325 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 326 return ret; 327 } 328 329 if (!(val & E2P_CMD_BUSY_)) 330 return 0; 331 332 udelay(40); 333 } while (!time_after(jiffies, start_time + HZ)); 334 335 netdev_warn(dev->net, "EEPROM is busy\n"); 336 return -EIO; 337 } 338 339 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 340 u8 *data) 341 { 342 u32 val; 343 int i, ret; 344 345 BUG_ON(!dev); 346 BUG_ON(!data); 347 348 ret = smsc95xx_eeprom_confirm_not_busy(dev); 349 if (ret) 350 return ret; 351 352 for (i = 0; i < length; i++) { 353 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); 354 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 355 if (ret < 0) { 356 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 357 return ret; 358 } 359 360 ret = smsc95xx_wait_eeprom(dev); 361 if (ret < 0) 362 return ret; 363 364 ret = smsc95xx_read_reg(dev, E2P_DATA, &val); 365 if (ret < 0) { 366 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 367 return ret; 368 } 369 370 data[i] = val & 0xFF; 371 offset++; 372 } 373 374 return 0; 375 } 376 377 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 378 u8 *data) 379 { 380 u32 val; 381 int i, ret; 382 383 BUG_ON(!dev); 384 BUG_ON(!data); 385 386 ret = smsc95xx_eeprom_confirm_not_busy(dev); 387 if (ret) 388 return ret; 389 390 /* Issue write/erase enable command */ 391 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; 392 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 393 if (ret < 0) { 394 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 395 return ret; 396 } 397 398 ret = smsc95xx_wait_eeprom(dev); 399 if (ret < 0) 400 return ret; 401 402 for (i = 0; i < length; i++) { 403 404 /* Fill data register */ 405 val = data[i]; 406 ret = smsc95xx_write_reg(dev, E2P_DATA, val); 407 if (ret < 0) { 408 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 409 return ret; 410 } 411 412 /* Send "write" command */ 413 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); 414 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 415 if (ret < 0) { 416 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 417 return ret; 418 } 419 420 ret = smsc95xx_wait_eeprom(dev); 421 if (ret < 0) 422 return ret; 423 424 offset++; 425 } 426 427 return 0; 428 } 429 430 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, 431 u32 data) 432 { 433 const u16 size = 4; 434 u32 buf; 435 int ret; 436 437 buf = data; 438 cpu_to_le32s(&buf); 439 440 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, 441 USB_DIR_OUT | USB_TYPE_VENDOR | 442 USB_RECIP_DEVICE, 443 0, index, &buf, size); 444 if (ret < 0) 445 netdev_warn(dev->net, "Error write async cmd, sts=%d\n", 446 ret); 447 return ret; 448 } 449 450 /* returns hash bit number for given MAC address 451 * example: 452 * 01 00 5E 00 00 01 -> returns bit number 31 */ 453 static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) 454 { 455 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; 456 } 457 458 static void smsc95xx_set_multicast(struct net_device *netdev) 459 { 460 struct usbnet *dev = netdev_priv(netdev); 461 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 462 unsigned long flags; 463 int ret; 464 465 pdata->hash_hi = 0; 466 pdata->hash_lo = 0; 467 468 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 469 470 if (dev->net->flags & IFF_PROMISC) { 471 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 472 pdata->mac_cr |= MAC_CR_PRMS_; 473 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 474 } else if (dev->net->flags & IFF_ALLMULTI) { 475 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 476 pdata->mac_cr |= MAC_CR_MCPAS_; 477 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); 478 } else if (!netdev_mc_empty(dev->net)) { 479 struct netdev_hw_addr *ha; 480 481 pdata->mac_cr |= MAC_CR_HPFILT_; 482 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); 483 484 netdev_for_each_mc_addr(ha, netdev) { 485 u32 bitnum = smsc95xx_hash(ha->addr); 486 u32 mask = 0x01 << (bitnum & 0x1F); 487 if (bitnum & 0x20) 488 pdata->hash_hi |= mask; 489 else 490 pdata->hash_lo |= mask; 491 } 492 493 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", 494 pdata->hash_hi, pdata->hash_lo); 495 } else { 496 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 497 pdata->mac_cr &= 498 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 499 } 500 501 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 502 503 /* Initiate async writes, as we can't wait for completion here */ 504 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi); 505 if (ret < 0) 506 netdev_warn(dev->net, "failed to initiate async write to HASHH\n"); 507 508 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo); 509 if (ret < 0) 510 netdev_warn(dev->net, "failed to initiate async write to HASHL\n"); 511 512 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr); 513 if (ret < 0) 514 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n"); 515 } 516 517 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, 518 u16 lcladv, u16 rmtadv) 519 { 520 u32 flow, afc_cfg = 0; 521 522 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); 523 if (ret < 0) 524 return ret; 525 526 if (duplex == DUPLEX_FULL) { 527 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 528 529 if (cap & FLOW_CTRL_RX) 530 flow = 0xFFFF0002; 531 else 532 flow = 0; 533 534 if (cap & FLOW_CTRL_TX) 535 afc_cfg |= 0xF; 536 else 537 afc_cfg &= ~0xF; 538 539 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 540 cap & FLOW_CTRL_RX ? "enabled" : "disabled", 541 cap & FLOW_CTRL_TX ? "enabled" : "disabled"); 542 } else { 543 netif_dbg(dev, link, dev->net, "half duplex\n"); 544 flow = 0; 545 afc_cfg |= 0xF; 546 } 547 548 ret = smsc95xx_write_reg(dev, FLOW, flow); 549 if (ret < 0) 550 return ret; 551 552 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); 553 } 554 555 static int smsc95xx_link_reset(struct usbnet *dev) 556 { 557 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 558 struct mii_if_info *mii = &dev->mii; 559 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 560 unsigned long flags; 561 u16 lcladv, rmtadv; 562 int ret; 563 564 /* clear interrupt status */ 565 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); 566 if (ret < 0) 567 return ret; 568 569 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 570 if (ret < 0) 571 return ret; 572 573 mii_check_media(mii, 1, 1); 574 mii_ethtool_gset(&dev->mii, &ecmd); 575 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 576 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 577 578 netif_dbg(dev, link, dev->net, 579 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 580 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 581 582 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 583 if (ecmd.duplex != DUPLEX_FULL) { 584 pdata->mac_cr &= ~MAC_CR_FDPX_; 585 pdata->mac_cr |= MAC_CR_RCVOWN_; 586 } else { 587 pdata->mac_cr &= ~MAC_CR_RCVOWN_; 588 pdata->mac_cr |= MAC_CR_FDPX_; 589 } 590 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 591 592 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 593 if (ret < 0) 594 return ret; 595 596 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 597 if (ret < 0) 598 netdev_warn(dev->net, "Error updating PHY flow control\n"); 599 600 return ret; 601 } 602 603 static void smsc95xx_status(struct usbnet *dev, struct urb *urb) 604 { 605 u32 intdata; 606 607 if (urb->actual_length != 4) { 608 netdev_warn(dev->net, "unexpected urb length %d\n", 609 urb->actual_length); 610 return; 611 } 612 613 memcpy(&intdata, urb->transfer_buffer, 4); 614 le32_to_cpus(&intdata); 615 616 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 617 618 if (intdata & INT_ENP_PHY_INT_) 619 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 620 else 621 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 622 intdata); 623 } 624 625 /* Enable or disable Tx & Rx checksum offload engines */ 626 static int smsc95xx_set_features(struct net_device *netdev, 627 netdev_features_t features) 628 { 629 struct usbnet *dev = netdev_priv(netdev); 630 u32 read_buf; 631 int ret; 632 633 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); 634 if (ret < 0) 635 return ret; 636 637 if (features & NETIF_F_HW_CSUM) 638 read_buf |= Tx_COE_EN_; 639 else 640 read_buf &= ~Tx_COE_EN_; 641 642 if (features & NETIF_F_RXCSUM) 643 read_buf |= Rx_COE_EN_; 644 else 645 read_buf &= ~Rx_COE_EN_; 646 647 ret = smsc95xx_write_reg(dev, COE_CR, read_buf); 648 if (ret < 0) 649 return ret; 650 651 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); 652 return 0; 653 } 654 655 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) 656 { 657 return MAX_EEPROM_SIZE; 658 } 659 660 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, 661 struct ethtool_eeprom *ee, u8 *data) 662 { 663 struct usbnet *dev = netdev_priv(netdev); 664 665 ee->magic = LAN95XX_EEPROM_MAGIC; 666 667 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); 668 } 669 670 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, 671 struct ethtool_eeprom *ee, u8 *data) 672 { 673 struct usbnet *dev = netdev_priv(netdev); 674 675 if (ee->magic != LAN95XX_EEPROM_MAGIC) { 676 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", 677 ee->magic); 678 return -EINVAL; 679 } 680 681 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); 682 } 683 684 static int smsc95xx_ethtool_getregslen(struct net_device *netdev) 685 { 686 /* all smsc95xx registers */ 687 return COE_CR - ID_REV + sizeof(u32); 688 } 689 690 static void 691 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, 692 void *buf) 693 { 694 struct usbnet *dev = netdev_priv(netdev); 695 unsigned int i, j; 696 int retval; 697 u32 *data = buf; 698 699 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); 700 if (retval < 0) { 701 netdev_warn(netdev, "REGS: cannot read ID_REV\n"); 702 return; 703 } 704 705 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { 706 retval = smsc95xx_read_reg(dev, i, &data[j]); 707 if (retval < 0) { 708 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); 709 return; 710 } 711 } 712 } 713 714 static void smsc95xx_ethtool_get_wol(struct net_device *net, 715 struct ethtool_wolinfo *wolinfo) 716 { 717 struct usbnet *dev = netdev_priv(net); 718 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 719 720 wolinfo->supported = SUPPORTED_WAKE; 721 wolinfo->wolopts = pdata->wolopts; 722 } 723 724 static int smsc95xx_ethtool_set_wol(struct net_device *net, 725 struct ethtool_wolinfo *wolinfo) 726 { 727 struct usbnet *dev = netdev_priv(net); 728 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 729 int ret; 730 731 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 732 733 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 734 if (ret < 0) 735 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 736 737 return ret; 738 } 739 740 static const struct ethtool_ops smsc95xx_ethtool_ops = { 741 .get_link = usbnet_get_link, 742 .nway_reset = usbnet_nway_reset, 743 .get_drvinfo = usbnet_get_drvinfo, 744 .get_msglevel = usbnet_get_msglevel, 745 .set_msglevel = usbnet_set_msglevel, 746 .get_settings = usbnet_get_settings, 747 .set_settings = usbnet_set_settings, 748 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, 749 .get_eeprom = smsc95xx_ethtool_get_eeprom, 750 .set_eeprom = smsc95xx_ethtool_set_eeprom, 751 .get_regs_len = smsc95xx_ethtool_getregslen, 752 .get_regs = smsc95xx_ethtool_getregs, 753 .get_wol = smsc95xx_ethtool_get_wol, 754 .set_wol = smsc95xx_ethtool_set_wol, 755 }; 756 757 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 758 { 759 struct usbnet *dev = netdev_priv(netdev); 760 761 if (!netif_running(netdev)) 762 return -EINVAL; 763 764 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 765 } 766 767 static void smsc95xx_init_mac_address(struct usbnet *dev) 768 { 769 /* try reading mac address from EEPROM */ 770 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 771 dev->net->dev_addr) == 0) { 772 if (is_valid_ether_addr(dev->net->dev_addr)) { 773 /* eeprom values are valid so use them */ 774 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); 775 return; 776 } 777 } 778 779 /* no eeprom, or eeprom values are invalid. generate random MAC */ 780 eth_hw_addr_random(dev->net); 781 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 782 } 783 784 static int smsc95xx_set_mac_address(struct usbnet *dev) 785 { 786 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 787 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 788 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 789 int ret; 790 791 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); 792 if (ret < 0) 793 return ret; 794 795 return smsc95xx_write_reg(dev, ADDRH, addr_hi); 796 } 797 798 /* starts the TX path */ 799 static int smsc95xx_start_tx_path(struct usbnet *dev) 800 { 801 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 802 unsigned long flags; 803 int ret; 804 805 /* Enable Tx at MAC */ 806 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 807 pdata->mac_cr |= MAC_CR_TXEN_; 808 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 809 810 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 811 if (ret < 0) 812 return ret; 813 814 /* Enable Tx at SCSRs */ 815 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); 816 } 817 818 /* Starts the Receive path */ 819 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm) 820 { 821 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 822 unsigned long flags; 823 824 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 825 pdata->mac_cr |= MAC_CR_RXEN_; 826 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 827 828 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm); 829 } 830 831 static int smsc95xx_phy_initialize(struct usbnet *dev) 832 { 833 int bmcr, ret, timeout = 0; 834 835 /* Initialize MII structure */ 836 dev->mii.dev = dev->net; 837 dev->mii.mdio_read = smsc95xx_mdio_read; 838 dev->mii.mdio_write = smsc95xx_mdio_write; 839 dev->mii.phy_id_mask = 0x1f; 840 dev->mii.reg_num_mask = 0x1f; 841 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; 842 843 /* reset phy and wait for reset to complete */ 844 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 845 846 do { 847 msleep(10); 848 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 849 timeout++; 850 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 851 852 if (timeout >= 100) { 853 netdev_warn(dev->net, "timeout on PHY Reset"); 854 return -EIO; 855 } 856 857 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 858 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 859 ADVERTISE_PAUSE_ASYM); 860 861 /* read to clear */ 862 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 863 if (ret < 0) { 864 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n"); 865 return ret; 866 } 867 868 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 869 PHY_INT_MASK_DEFAULT_); 870 mii_nway_restart(&dev->mii); 871 872 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 873 return 0; 874 } 875 876 static int smsc95xx_reset(struct usbnet *dev) 877 { 878 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 879 u32 read_buf, write_buf, burst_cap; 880 int ret = 0, timeout; 881 882 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); 883 884 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_); 885 if (ret < 0) 886 return ret; 887 888 timeout = 0; 889 do { 890 msleep(10); 891 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 892 if (ret < 0) 893 return ret; 894 timeout++; 895 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); 896 897 if (timeout >= 100) { 898 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); 899 return ret; 900 } 901 902 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_); 903 if (ret < 0) 904 return ret; 905 906 timeout = 0; 907 do { 908 msleep(10); 909 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); 910 if (ret < 0) 911 return ret; 912 timeout++; 913 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); 914 915 if (timeout >= 100) { 916 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 917 return ret; 918 } 919 920 ret = smsc95xx_set_mac_address(dev); 921 if (ret < 0) 922 return ret; 923 924 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 925 dev->net->dev_addr); 926 927 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 928 if (ret < 0) 929 return ret; 930 931 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 932 read_buf); 933 934 read_buf |= HW_CFG_BIR_; 935 936 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 937 if (ret < 0) 938 return ret; 939 940 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 941 if (ret < 0) 942 return ret; 943 944 netif_dbg(dev, ifup, dev->net, 945 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", 946 read_buf); 947 948 if (!turbo_mode) { 949 burst_cap = 0; 950 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 951 } else if (dev->udev->speed == USB_SPEED_HIGH) { 952 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 953 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 954 } else { 955 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 956 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 957 } 958 959 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 960 (ulong)dev->rx_urb_size); 961 962 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); 963 if (ret < 0) 964 return ret; 965 966 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); 967 if (ret < 0) 968 return ret; 969 970 netif_dbg(dev, ifup, dev->net, 971 "Read Value from BURST_CAP after writing: 0x%08x\n", 972 read_buf); 973 974 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 975 if (ret < 0) 976 return ret; 977 978 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); 979 if (ret < 0) 980 return ret; 981 982 netif_dbg(dev, ifup, dev->net, 983 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", 984 read_buf); 985 986 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 987 if (ret < 0) 988 return ret; 989 990 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", 991 read_buf); 992 993 if (turbo_mode) 994 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); 995 996 read_buf &= ~HW_CFG_RXDOFF_; 997 998 /* set Rx data offset=2, Make IP header aligns on word boundary. */ 999 read_buf |= NET_IP_ALIGN << 9; 1000 1001 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 1002 if (ret < 0) 1003 return ret; 1004 1005 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 1006 if (ret < 0) 1007 return ret; 1008 1009 netif_dbg(dev, ifup, dev->net, 1010 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); 1011 1012 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 1013 if (ret < 0) 1014 return ret; 1015 1016 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); 1017 if (ret < 0) 1018 return ret; 1019 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); 1020 1021 /* Configure GPIO pins as LED outputs */ 1022 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | 1023 LED_GPIO_CFG_FDX_LED; 1024 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); 1025 if (ret < 0) 1026 return ret; 1027 1028 /* Init Tx */ 1029 ret = smsc95xx_write_reg(dev, FLOW, 0); 1030 if (ret < 0) 1031 return ret; 1032 1033 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT); 1034 if (ret < 0) 1035 return ret; 1036 1037 /* Don't need mac_cr_lock during initialisation */ 1038 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); 1039 if (ret < 0) 1040 return ret; 1041 1042 /* Init Rx */ 1043 /* Set Vlan */ 1044 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q); 1045 if (ret < 0) 1046 return ret; 1047 1048 /* Enable or disable checksum offload engines */ 1049 ret = smsc95xx_set_features(dev->net, dev->net->features); 1050 if (ret < 0) { 1051 netdev_warn(dev->net, "Failed to set checksum offload features\n"); 1052 return ret; 1053 } 1054 1055 smsc95xx_set_multicast(dev->net); 1056 1057 ret = smsc95xx_phy_initialize(dev); 1058 if (ret < 0) { 1059 netdev_warn(dev->net, "Failed to init PHY\n"); 1060 return ret; 1061 } 1062 1063 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); 1064 if (ret < 0) 1065 return ret; 1066 1067 /* enable PHY interrupts */ 1068 read_buf |= INT_EP_CTL_PHY_INT_; 1069 1070 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); 1071 if (ret < 0) 1072 return ret; 1073 1074 ret = smsc95xx_start_tx_path(dev); 1075 if (ret < 0) { 1076 netdev_warn(dev->net, "Failed to start TX path\n"); 1077 return ret; 1078 } 1079 1080 ret = smsc95xx_start_rx_path(dev, 0); 1081 if (ret < 0) { 1082 netdev_warn(dev->net, "Failed to start RX path\n"); 1083 return ret; 1084 } 1085 1086 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); 1087 return 0; 1088 } 1089 1090 static const struct net_device_ops smsc95xx_netdev_ops = { 1091 .ndo_open = usbnet_open, 1092 .ndo_stop = usbnet_stop, 1093 .ndo_start_xmit = usbnet_start_xmit, 1094 .ndo_tx_timeout = usbnet_tx_timeout, 1095 .ndo_change_mtu = usbnet_change_mtu, 1096 .ndo_set_mac_address = eth_mac_addr, 1097 .ndo_validate_addr = eth_validate_addr, 1098 .ndo_do_ioctl = smsc95xx_ioctl, 1099 .ndo_set_rx_mode = smsc95xx_set_multicast, 1100 .ndo_set_features = smsc95xx_set_features, 1101 }; 1102 1103 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) 1104 { 1105 struct smsc95xx_priv *pdata = NULL; 1106 u32 val; 1107 int ret; 1108 1109 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1110 1111 ret = usbnet_get_endpoints(dev, intf); 1112 if (ret < 0) { 1113 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1114 return ret; 1115 } 1116 1117 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), 1118 GFP_KERNEL); 1119 1120 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1121 if (!pdata) 1122 return -ENOMEM; 1123 1124 spin_lock_init(&pdata->mac_cr_lock); 1125 1126 if (DEFAULT_TX_CSUM_ENABLE) 1127 dev->net->features |= NETIF_F_HW_CSUM; 1128 if (DEFAULT_RX_CSUM_ENABLE) 1129 dev->net->features |= NETIF_F_RXCSUM; 1130 1131 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; 1132 1133 smsc95xx_init_mac_address(dev); 1134 1135 /* Init all registers */ 1136 ret = smsc95xx_reset(dev); 1137 1138 /* detect device revision as different features may be available */ 1139 ret = smsc95xx_read_reg(dev, ID_REV, &val); 1140 if (ret < 0) 1141 return ret; 1142 val >>= 16; 1143 1144 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) || 1145 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_)) 1146 pdata->features = (FEATURE_8_WAKEUP_FILTERS | 1147 FEATURE_PHY_NLP_CROSSOVER | 1148 FEATURE_REMOTE_WAKEUP); 1149 else if (val == ID_REV_CHIP_ID_9512_) 1150 pdata->features = FEATURE_8_WAKEUP_FILTERS; 1151 1152 dev->net->netdev_ops = &smsc95xx_netdev_ops; 1153 dev->net->ethtool_ops = &smsc95xx_ethtool_ops; 1154 dev->net->flags |= IFF_MULTICAST; 1155 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; 1156 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1157 return 0; 1158 } 1159 1160 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1161 { 1162 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1163 if (pdata) { 1164 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1165 kfree(pdata); 1166 pdata = NULL; 1167 dev->data[0] = 0; 1168 } 1169 } 1170 1171 static u32 smsc_crc(const u8 *buffer, size_t len, int filter) 1172 { 1173 u32 crc = bitrev16(crc16(0xFFFF, buffer, len)); 1174 return crc << ((filter % 2) * 16); 1175 } 1176 1177 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1178 { 1179 struct mii_if_info *mii = &dev->mii; 1180 int ret; 1181 1182 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1183 1184 /* read to clear */ 1185 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1186 if (ret < 0) 1187 return ret; 1188 1189 /* enable interrupt source */ 1190 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1191 if (ret < 0) 1192 return ret; 1193 1194 ret |= mask; 1195 1196 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1197 1198 return 0; 1199 } 1200 1201 static int smsc95xx_link_ok_nopm(struct usbnet *dev) 1202 { 1203 struct mii_if_info *mii = &dev->mii; 1204 int ret; 1205 1206 /* first, a dummy read, needed to latch some MII phys */ 1207 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1208 if (ret < 0) 1209 return ret; 1210 1211 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1212 if (ret < 0) 1213 return ret; 1214 1215 return !!(ret & BMSR_LSTATUS); 1216 } 1217 1218 static int smsc95xx_enter_suspend0(struct usbnet *dev) 1219 { 1220 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1221 u32 val; 1222 int ret; 1223 1224 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1225 if (ret < 0) 1226 return ret; 1227 1228 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); 1229 val |= PM_CTL_SUS_MODE_0; 1230 1231 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1232 if (ret < 0) 1233 return ret; 1234 1235 /* clear wol status */ 1236 val &= ~PM_CTL_WUPS_; 1237 val |= PM_CTL_WUPS_WOL_; 1238 1239 /* enable energy detection */ 1240 if (pdata->wolopts & WAKE_PHY) 1241 val |= PM_CTL_WUPS_ED_; 1242 1243 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1244 if (ret < 0) 1245 return ret; 1246 1247 /* read back PM_CTRL */ 1248 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1249 if (ret < 0) 1250 return ret; 1251 1252 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1253 1254 return 0; 1255 } 1256 1257 static int smsc95xx_enter_suspend1(struct usbnet *dev) 1258 { 1259 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1260 struct mii_if_info *mii = &dev->mii; 1261 u32 val; 1262 int ret; 1263 1264 /* reconfigure link pulse detection timing for 1265 * compatibility with non-standard link partners 1266 */ 1267 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) 1268 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG, 1269 PHY_EDPD_CONFIG_DEFAULT); 1270 1271 /* enable energy detect power-down mode */ 1272 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS); 1273 if (ret < 0) 1274 return ret; 1275 1276 ret |= MODE_CTRL_STS_EDPWRDOWN_; 1277 1278 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret); 1279 1280 /* enter SUSPEND1 mode */ 1281 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1282 if (ret < 0) 1283 return ret; 1284 1285 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1286 val |= PM_CTL_SUS_MODE_1; 1287 1288 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1289 if (ret < 0) 1290 return ret; 1291 1292 /* clear wol status, enable energy detection */ 1293 val &= ~PM_CTL_WUPS_; 1294 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); 1295 1296 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1297 if (ret < 0) 1298 return ret; 1299 1300 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1301 1302 return 0; 1303 } 1304 1305 static int smsc95xx_enter_suspend2(struct usbnet *dev) 1306 { 1307 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1308 u32 val; 1309 int ret; 1310 1311 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1312 if (ret < 0) 1313 return ret; 1314 1315 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1316 val |= PM_CTL_SUS_MODE_2; 1317 1318 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1319 if (ret < 0) 1320 return ret; 1321 1322 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1323 1324 return 0; 1325 } 1326 1327 static int smsc95xx_enter_suspend3(struct usbnet *dev) 1328 { 1329 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1330 u32 val; 1331 int ret; 1332 1333 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val); 1334 if (ret < 0) 1335 return ret; 1336 1337 if (val & 0xFFFF) { 1338 netdev_info(dev->net, "rx fifo not empty in autosuspend\n"); 1339 return -EBUSY; 1340 } 1341 1342 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1343 if (ret < 0) 1344 return ret; 1345 1346 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1347 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS; 1348 1349 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1350 if (ret < 0) 1351 return ret; 1352 1353 /* clear wol status */ 1354 val &= ~PM_CTL_WUPS_; 1355 val |= PM_CTL_WUPS_WOL_; 1356 1357 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1358 if (ret < 0) 1359 return ret; 1360 1361 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1362 1363 return 0; 1364 } 1365 1366 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up) 1367 { 1368 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1369 int ret; 1370 1371 if (!netif_running(dev->net)) { 1372 /* interface is ifconfig down so fully power down hw */ 1373 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1374 return smsc95xx_enter_suspend2(dev); 1375 } 1376 1377 if (!link_up) { 1378 /* link is down so enter EDPD mode, but only if device can 1379 * reliably resume from it. This check should be redundant 1380 * as current FEATURE_REMOTE_WAKEUP parts also support 1381 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */ 1382 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) { 1383 netdev_warn(dev->net, "EDPD not supported\n"); 1384 return -EBUSY; 1385 } 1386 1387 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1388 1389 /* enable PHY wakeup events for if cable is attached */ 1390 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1391 PHY_INT_MASK_ANEG_COMP_); 1392 if (ret < 0) { 1393 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1394 return ret; 1395 } 1396 1397 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1398 return smsc95xx_enter_suspend1(dev); 1399 } 1400 1401 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1402 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1403 PHY_INT_MASK_LINK_DOWN_); 1404 if (ret < 0) { 1405 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1406 return ret; 1407 } 1408 1409 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1410 return smsc95xx_enter_suspend3(dev); 1411 } 1412 1413 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) 1414 { 1415 struct usbnet *dev = usb_get_intfdata(intf); 1416 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1417 u32 val, link_up; 1418 int ret; 1419 1420 ret = usbnet_suspend(intf, message); 1421 if (ret < 0) { 1422 netdev_warn(dev->net, "usbnet_suspend error\n"); 1423 return ret; 1424 } 1425 1426 if (pdata->suspend_flags) { 1427 netdev_warn(dev->net, "error during last resume\n"); 1428 pdata->suspend_flags = 0; 1429 } 1430 1431 /* determine if link is up using only _nopm functions */ 1432 link_up = smsc95xx_link_ok_nopm(dev); 1433 1434 if (message.event == PM_EVENT_AUTO_SUSPEND && 1435 (pdata->features & FEATURE_REMOTE_WAKEUP)) { 1436 ret = smsc95xx_autosuspend(dev, link_up); 1437 goto done; 1438 } 1439 1440 /* if we get this far we're not autosuspending */ 1441 /* if no wol options set, or if link is down and we're not waking on 1442 * PHY activity, enter lowest power SUSPEND2 mode 1443 */ 1444 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1445 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1446 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1447 1448 /* disable energy detect (link up) & wake up events */ 1449 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1450 if (ret < 0) 1451 goto done; 1452 1453 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); 1454 1455 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1456 if (ret < 0) 1457 goto done; 1458 1459 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1460 if (ret < 0) 1461 goto done; 1462 1463 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); 1464 1465 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1466 if (ret < 0) 1467 goto done; 1468 1469 ret = smsc95xx_enter_suspend2(dev); 1470 goto done; 1471 } 1472 1473 if (pdata->wolopts & WAKE_PHY) { 1474 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1475 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_)); 1476 if (ret < 0) { 1477 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1478 goto done; 1479 } 1480 1481 /* if link is down then configure EDPD and enter SUSPEND1, 1482 * otherwise enter SUSPEND0 below 1483 */ 1484 if (!link_up) { 1485 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1486 ret = smsc95xx_enter_suspend1(dev); 1487 goto done; 1488 } 1489 } 1490 1491 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1492 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL); 1493 u32 command[2]; 1494 u32 offset[2]; 1495 u32 crc[4]; 1496 int wuff_filter_count = 1497 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ? 1498 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM; 1499 int i, filter = 0; 1500 1501 if (!filter_mask) { 1502 netdev_warn(dev->net, "Unable to allocate filter_mask\n"); 1503 ret = -ENOMEM; 1504 goto done; 1505 } 1506 1507 memset(command, 0, sizeof(command)); 1508 memset(offset, 0, sizeof(offset)); 1509 memset(crc, 0, sizeof(crc)); 1510 1511 if (pdata->wolopts & WAKE_BCAST) { 1512 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1513 netdev_info(dev->net, "enabling broadcast detection\n"); 1514 filter_mask[filter * 4] = 0x003F; 1515 filter_mask[filter * 4 + 1] = 0x00; 1516 filter_mask[filter * 4 + 2] = 0x00; 1517 filter_mask[filter * 4 + 3] = 0x00; 1518 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1519 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1520 crc[filter/2] |= smsc_crc(bcast, 6, filter); 1521 filter++; 1522 } 1523 1524 if (pdata->wolopts & WAKE_MCAST) { 1525 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1526 netdev_info(dev->net, "enabling multicast detection\n"); 1527 filter_mask[filter * 4] = 0x0007; 1528 filter_mask[filter * 4 + 1] = 0x00; 1529 filter_mask[filter * 4 + 2] = 0x00; 1530 filter_mask[filter * 4 + 3] = 0x00; 1531 command[filter/4] |= 0x09UL << ((filter % 4) * 8); 1532 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1533 crc[filter/2] |= smsc_crc(mcast, 3, filter); 1534 filter++; 1535 } 1536 1537 if (pdata->wolopts & WAKE_ARP) { 1538 const u8 arp[] = {0x08, 0x06}; 1539 netdev_info(dev->net, "enabling ARP detection\n"); 1540 filter_mask[filter * 4] = 0x0003; 1541 filter_mask[filter * 4 + 1] = 0x00; 1542 filter_mask[filter * 4 + 2] = 0x00; 1543 filter_mask[filter * 4 + 3] = 0x00; 1544 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1545 offset[filter/4] |= 0x0C << ((filter % 4) * 8); 1546 crc[filter/2] |= smsc_crc(arp, 2, filter); 1547 filter++; 1548 } 1549 1550 if (pdata->wolopts & WAKE_UCAST) { 1551 netdev_info(dev->net, "enabling unicast detection\n"); 1552 filter_mask[filter * 4] = 0x003F; 1553 filter_mask[filter * 4 + 1] = 0x00; 1554 filter_mask[filter * 4 + 2] = 0x00; 1555 filter_mask[filter * 4 + 3] = 0x00; 1556 command[filter/4] |= 0x01UL << ((filter % 4) * 8); 1557 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1558 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter); 1559 filter++; 1560 } 1561 1562 for (i = 0; i < (wuff_filter_count * 4); i++) { 1563 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]); 1564 if (ret < 0) { 1565 kfree(filter_mask); 1566 goto done; 1567 } 1568 } 1569 kfree(filter_mask); 1570 1571 for (i = 0; i < (wuff_filter_count / 4); i++) { 1572 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]); 1573 if (ret < 0) 1574 goto done; 1575 } 1576 1577 for (i = 0; i < (wuff_filter_count / 4); i++) { 1578 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]); 1579 if (ret < 0) 1580 goto done; 1581 } 1582 1583 for (i = 0; i < (wuff_filter_count / 2); i++) { 1584 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]); 1585 if (ret < 0) 1586 goto done; 1587 } 1588 1589 /* clear any pending pattern match packet status */ 1590 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1591 if (ret < 0) 1592 goto done; 1593 1594 val |= WUCSR_WUFR_; 1595 1596 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1597 if (ret < 0) 1598 goto done; 1599 } 1600 1601 if (pdata->wolopts & WAKE_MAGIC) { 1602 /* clear any pending magic packet status */ 1603 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1604 if (ret < 0) 1605 goto done; 1606 1607 val |= WUCSR_MPR_; 1608 1609 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1610 if (ret < 0) 1611 goto done; 1612 } 1613 1614 /* enable/disable wakeup sources */ 1615 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1616 if (ret < 0) 1617 goto done; 1618 1619 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1620 netdev_info(dev->net, "enabling pattern match wakeup\n"); 1621 val |= WUCSR_WAKE_EN_; 1622 } else { 1623 netdev_info(dev->net, "disabling pattern match wakeup\n"); 1624 val &= ~WUCSR_WAKE_EN_; 1625 } 1626 1627 if (pdata->wolopts & WAKE_MAGIC) { 1628 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1629 val |= WUCSR_MPEN_; 1630 } else { 1631 netdev_info(dev->net, "disabling magic packet wakeup\n"); 1632 val &= ~WUCSR_MPEN_; 1633 } 1634 1635 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1636 if (ret < 0) 1637 goto done; 1638 1639 /* enable wol wakeup source */ 1640 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1641 if (ret < 0) 1642 goto done; 1643 1644 val |= PM_CTL_WOL_EN_; 1645 1646 /* phy energy detect wakeup source */ 1647 if (pdata->wolopts & WAKE_PHY) 1648 val |= PM_CTL_ED_EN_; 1649 1650 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1651 if (ret < 0) 1652 goto done; 1653 1654 /* enable receiver to enable frame reception */ 1655 smsc95xx_start_rx_path(dev, 1); 1656 1657 /* some wol options are enabled, so enter SUSPEND0 */ 1658 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 1659 ret = smsc95xx_enter_suspend0(dev); 1660 1661 done: 1662 /* 1663 * TODO: resume() might need to handle the suspend failure 1664 * in system sleep 1665 */ 1666 if (ret && PMSG_IS_AUTO(message)) 1667 usbnet_resume(intf); 1668 return ret; 1669 } 1670 1671 static int smsc95xx_resume(struct usb_interface *intf) 1672 { 1673 struct usbnet *dev = usb_get_intfdata(intf); 1674 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1675 u8 suspend_flags = pdata->suspend_flags; 1676 int ret; 1677 u32 val; 1678 1679 BUG_ON(!dev); 1680 1681 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 1682 1683 /* do this first to ensure it's cleared even in error case */ 1684 pdata->suspend_flags = 0; 1685 1686 if (suspend_flags & SUSPEND_ALLMODES) { 1687 /* clear wake-up sources */ 1688 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1689 if (ret < 0) 1690 return ret; 1691 1692 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); 1693 1694 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1695 if (ret < 0) 1696 return ret; 1697 1698 /* clear wake-up status */ 1699 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1700 if (ret < 0) 1701 return ret; 1702 1703 val &= ~PM_CTL_WOL_EN_; 1704 val |= PM_CTL_WUPS_; 1705 1706 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1707 if (ret < 0) 1708 return ret; 1709 } 1710 1711 ret = usbnet_resume(intf); 1712 if (ret < 0) 1713 netdev_warn(dev->net, "usbnet_resume error\n"); 1714 1715 return ret; 1716 } 1717 1718 static void smsc95xx_rx_csum_offload(struct sk_buff *skb) 1719 { 1720 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); 1721 skb->ip_summed = CHECKSUM_COMPLETE; 1722 skb_trim(skb, skb->len - 2); 1723 } 1724 1725 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 1726 { 1727 while (skb->len > 0) { 1728 u32 header, align_count; 1729 struct sk_buff *ax_skb; 1730 unsigned char *packet; 1731 u16 size; 1732 1733 memcpy(&header, skb->data, sizeof(header)); 1734 le32_to_cpus(&header); 1735 skb_pull(skb, 4 + NET_IP_ALIGN); 1736 packet = skb->data; 1737 1738 /* get the packet length */ 1739 size = (u16)((header & RX_STS_FL_) >> 16); 1740 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; 1741 1742 if (unlikely(header & RX_STS_ES_)) { 1743 netif_dbg(dev, rx_err, dev->net, 1744 "Error header=0x%08x\n", header); 1745 dev->net->stats.rx_errors++; 1746 dev->net->stats.rx_dropped++; 1747 1748 if (header & RX_STS_CRC_) { 1749 dev->net->stats.rx_crc_errors++; 1750 } else { 1751 if (header & (RX_STS_TL_ | RX_STS_RF_)) 1752 dev->net->stats.rx_frame_errors++; 1753 1754 if ((header & RX_STS_LE_) && 1755 (!(header & RX_STS_FT_))) 1756 dev->net->stats.rx_length_errors++; 1757 } 1758 } else { 1759 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ 1760 if (unlikely(size > (ETH_FRAME_LEN + 12))) { 1761 netif_dbg(dev, rx_err, dev->net, 1762 "size err header=0x%08x\n", header); 1763 return 0; 1764 } 1765 1766 /* last frame in this batch */ 1767 if (skb->len == size) { 1768 if (dev->net->features & NETIF_F_RXCSUM) 1769 smsc95xx_rx_csum_offload(skb); 1770 skb_trim(skb, skb->len - 4); /* remove fcs */ 1771 skb->truesize = size + sizeof(struct sk_buff); 1772 1773 return 1; 1774 } 1775 1776 ax_skb = skb_clone(skb, GFP_ATOMIC); 1777 if (unlikely(!ax_skb)) { 1778 netdev_warn(dev->net, "Error allocating skb\n"); 1779 return 0; 1780 } 1781 1782 ax_skb->len = size; 1783 ax_skb->data = packet; 1784 skb_set_tail_pointer(ax_skb, size); 1785 1786 if (dev->net->features & NETIF_F_RXCSUM) 1787 smsc95xx_rx_csum_offload(ax_skb); 1788 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 1789 ax_skb->truesize = size + sizeof(struct sk_buff); 1790 1791 usbnet_skb_return(dev, ax_skb); 1792 } 1793 1794 skb_pull(skb, size); 1795 1796 /* padding bytes before the next frame starts */ 1797 if (skb->len) 1798 skb_pull(skb, align_count); 1799 } 1800 1801 if (unlikely(skb->len < 0)) { 1802 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); 1803 return 0; 1804 } 1805 1806 return 1; 1807 } 1808 1809 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) 1810 { 1811 u16 low_16 = (u16)skb_checksum_start_offset(skb); 1812 u16 high_16 = low_16 + skb->csum_offset; 1813 return (high_16 << 16) | low_16; 1814 } 1815 1816 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, 1817 struct sk_buff *skb, gfp_t flags) 1818 { 1819 bool csum = skb->ip_summed == CHECKSUM_PARTIAL; 1820 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; 1821 u32 tx_cmd_a, tx_cmd_b; 1822 1823 /* We do not advertise SG, so skbs should be already linearized */ 1824 BUG_ON(skb_shinfo(skb)->nr_frags); 1825 1826 if (skb_headroom(skb) < overhead) { 1827 struct sk_buff *skb2 = skb_copy_expand(skb, 1828 overhead, 0, flags); 1829 dev_kfree_skb_any(skb); 1830 skb = skb2; 1831 if (!skb) 1832 return NULL; 1833 } 1834 1835 if (csum) { 1836 if (skb->len <= 45) { 1837 /* workaround - hardware tx checksum does not work 1838 * properly with extremely small packets */ 1839 long csstart = skb_checksum_start_offset(skb); 1840 __wsum calc = csum_partial(skb->data + csstart, 1841 skb->len - csstart, 0); 1842 *((__sum16 *)(skb->data + csstart 1843 + skb->csum_offset)) = csum_fold(calc); 1844 1845 csum = false; 1846 } else { 1847 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); 1848 skb_push(skb, 4); 1849 cpu_to_le32s(&csum_preamble); 1850 memcpy(skb->data, &csum_preamble, 4); 1851 } 1852 } 1853 1854 skb_push(skb, 4); 1855 tx_cmd_b = (u32)(skb->len - 4); 1856 if (csum) 1857 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; 1858 cpu_to_le32s(&tx_cmd_b); 1859 memcpy(skb->data, &tx_cmd_b, 4); 1860 1861 skb_push(skb, 4); 1862 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | 1863 TX_CMD_A_LAST_SEG_; 1864 cpu_to_le32s(&tx_cmd_a); 1865 memcpy(skb->data, &tx_cmd_a, 4); 1866 1867 return skb; 1868 } 1869 1870 static int smsc95xx_manage_power(struct usbnet *dev, int on) 1871 { 1872 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1873 1874 dev->intf->needs_remote_wakeup = on; 1875 1876 if (pdata->features & FEATURE_REMOTE_WAKEUP) 1877 return 0; 1878 1879 /* this chip revision isn't capable of remote wakeup */ 1880 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n"); 1881 1882 if (on) 1883 usb_autopm_get_interface_no_resume(dev->intf); 1884 else 1885 usb_autopm_put_interface(dev->intf); 1886 1887 return 0; 1888 } 1889 1890 static const struct driver_info smsc95xx_info = { 1891 .description = "smsc95xx USB 2.0 Ethernet", 1892 .bind = smsc95xx_bind, 1893 .unbind = smsc95xx_unbind, 1894 .link_reset = smsc95xx_link_reset, 1895 .reset = smsc95xx_reset, 1896 .rx_fixup = smsc95xx_rx_fixup, 1897 .tx_fixup = smsc95xx_tx_fixup, 1898 .status = smsc95xx_status, 1899 .manage_power = smsc95xx_manage_power, 1900 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 1901 }; 1902 1903 static const struct usb_device_id products[] = { 1904 { 1905 /* SMSC9500 USB Ethernet Device */ 1906 USB_DEVICE(0x0424, 0x9500), 1907 .driver_info = (unsigned long) &smsc95xx_info, 1908 }, 1909 { 1910 /* SMSC9505 USB Ethernet Device */ 1911 USB_DEVICE(0x0424, 0x9505), 1912 .driver_info = (unsigned long) &smsc95xx_info, 1913 }, 1914 { 1915 /* SMSC9500A USB Ethernet Device */ 1916 USB_DEVICE(0x0424, 0x9E00), 1917 .driver_info = (unsigned long) &smsc95xx_info, 1918 }, 1919 { 1920 /* SMSC9505A USB Ethernet Device */ 1921 USB_DEVICE(0x0424, 0x9E01), 1922 .driver_info = (unsigned long) &smsc95xx_info, 1923 }, 1924 { 1925 /* SMSC9512/9514 USB Hub & Ethernet Device */ 1926 USB_DEVICE(0x0424, 0xec00), 1927 .driver_info = (unsigned long) &smsc95xx_info, 1928 }, 1929 { 1930 /* SMSC9500 USB Ethernet Device (SAL10) */ 1931 USB_DEVICE(0x0424, 0x9900), 1932 .driver_info = (unsigned long) &smsc95xx_info, 1933 }, 1934 { 1935 /* SMSC9505 USB Ethernet Device (SAL10) */ 1936 USB_DEVICE(0x0424, 0x9901), 1937 .driver_info = (unsigned long) &smsc95xx_info, 1938 }, 1939 { 1940 /* SMSC9500A USB Ethernet Device (SAL10) */ 1941 USB_DEVICE(0x0424, 0x9902), 1942 .driver_info = (unsigned long) &smsc95xx_info, 1943 }, 1944 { 1945 /* SMSC9505A USB Ethernet Device (SAL10) */ 1946 USB_DEVICE(0x0424, 0x9903), 1947 .driver_info = (unsigned long) &smsc95xx_info, 1948 }, 1949 { 1950 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ 1951 USB_DEVICE(0x0424, 0x9904), 1952 .driver_info = (unsigned long) &smsc95xx_info, 1953 }, 1954 { 1955 /* SMSC9500A USB Ethernet Device (HAL) */ 1956 USB_DEVICE(0x0424, 0x9905), 1957 .driver_info = (unsigned long) &smsc95xx_info, 1958 }, 1959 { 1960 /* SMSC9505A USB Ethernet Device (HAL) */ 1961 USB_DEVICE(0x0424, 0x9906), 1962 .driver_info = (unsigned long) &smsc95xx_info, 1963 }, 1964 { 1965 /* SMSC9500 USB Ethernet Device (Alternate ID) */ 1966 USB_DEVICE(0x0424, 0x9907), 1967 .driver_info = (unsigned long) &smsc95xx_info, 1968 }, 1969 { 1970 /* SMSC9500A USB Ethernet Device (Alternate ID) */ 1971 USB_DEVICE(0x0424, 0x9908), 1972 .driver_info = (unsigned long) &smsc95xx_info, 1973 }, 1974 { 1975 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ 1976 USB_DEVICE(0x0424, 0x9909), 1977 .driver_info = (unsigned long) &smsc95xx_info, 1978 }, 1979 { 1980 /* SMSC LAN9530 USB Ethernet Device */ 1981 USB_DEVICE(0x0424, 0x9530), 1982 .driver_info = (unsigned long) &smsc95xx_info, 1983 }, 1984 { 1985 /* SMSC LAN9730 USB Ethernet Device */ 1986 USB_DEVICE(0x0424, 0x9730), 1987 .driver_info = (unsigned long) &smsc95xx_info, 1988 }, 1989 { 1990 /* SMSC LAN89530 USB Ethernet Device */ 1991 USB_DEVICE(0x0424, 0x9E08), 1992 .driver_info = (unsigned long) &smsc95xx_info, 1993 }, 1994 { }, /* END */ 1995 }; 1996 MODULE_DEVICE_TABLE(usb, products); 1997 1998 static struct usb_driver smsc95xx_driver = { 1999 .name = "smsc95xx", 2000 .id_table = products, 2001 .probe = usbnet_probe, 2002 .suspend = smsc95xx_suspend, 2003 .resume = smsc95xx_resume, 2004 .reset_resume = smsc95xx_resume, 2005 .disconnect = usbnet_disconnect, 2006 .disable_hub_initiated_lpm = 1, 2007 .supports_autosuspend = 1, 2008 }; 2009 2010 module_usb_driver(smsc95xx_driver); 2011 2012 MODULE_AUTHOR("Nancy Lin"); 2013 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2014 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); 2015 MODULE_LICENSE("GPL"); 2016