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/netdevice.h> 23 #include <linux/etherdevice.h> 24 #include <linux/ethtool.h> 25 #include <linux/mii.h> 26 #include <linux/usb.h> 27 #include <linux/bitrev.h> 28 #include <linux/crc16.h> 29 #include <linux/crc32.h> 30 #include <linux/usb/usbnet.h> 31 #include <linux/slab.h> 32 #include "smsc95xx.h" 33 34 #define SMSC_CHIPNAME "smsc95xx" 35 #define SMSC_DRIVER_VERSION "1.0.4" 36 #define HS_USB_PKT_SIZE (512) 37 #define FS_USB_PKT_SIZE (64) 38 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 39 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 40 #define DEFAULT_BULK_IN_DELAY (0x00002000) 41 #define MAX_SINGLE_PACKET_SIZE (2048) 42 #define LAN95XX_EEPROM_MAGIC (0x9500) 43 #define EEPROM_MAC_OFFSET (0x01) 44 #define DEFAULT_TX_CSUM_ENABLE (true) 45 #define DEFAULT_RX_CSUM_ENABLE (true) 46 #define SMSC95XX_INTERNAL_PHY_ID (1) 47 #define SMSC95XX_TX_OVERHEAD (8) 48 #define SMSC95XX_TX_OVERHEAD_CSUM (12) 49 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 50 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 51 52 #define FEATURE_8_WAKEUP_FILTERS (0x01) 53 #define FEATURE_PHY_NLP_CROSSOVER (0x02) 54 #define FEATURE_REMOTE_WAKEUP (0x04) 55 56 #define SUSPEND_SUSPEND0 (0x01) 57 #define SUSPEND_SUSPEND1 (0x02) 58 #define SUSPEND_SUSPEND2 (0x04) 59 #define SUSPEND_SUSPEND3 (0x08) 60 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 61 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 62 63 struct smsc95xx_priv { 64 u32 mac_cr; 65 u32 hash_hi; 66 u32 hash_lo; 67 u32 wolopts; 68 spinlock_t mac_cr_lock; 69 u8 features; 70 u8 suspend_flags; 71 }; 72 73 static bool turbo_mode = true; 74 module_param(turbo_mode, bool, 0644); 75 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 76 77 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index, 78 u32 *data, int in_pm) 79 { 80 u32 buf; 81 int ret; 82 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 83 84 BUG_ON(!dev); 85 86 if (!in_pm) 87 fn = usbnet_read_cmd; 88 else 89 fn = usbnet_read_cmd_nopm; 90 91 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 92 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 93 0, index, &buf, 4); 94 if (unlikely(ret < 0)) 95 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 96 index, ret); 97 98 le32_to_cpus(&buf); 99 *data = buf; 100 101 return ret; 102 } 103 104 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index, 105 u32 data, int in_pm) 106 { 107 u32 buf; 108 int ret; 109 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 110 111 BUG_ON(!dev); 112 113 if (!in_pm) 114 fn = usbnet_write_cmd; 115 else 116 fn = usbnet_write_cmd_nopm; 117 118 buf = data; 119 cpu_to_le32s(&buf); 120 121 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 122 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 123 0, index, &buf, 4); 124 if (unlikely(ret < 0)) 125 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 126 index, ret); 127 128 return ret; 129 } 130 131 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index, 132 u32 *data) 133 { 134 return __smsc95xx_read_reg(dev, index, data, 1); 135 } 136 137 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index, 138 u32 data) 139 { 140 return __smsc95xx_write_reg(dev, index, data, 1); 141 } 142 143 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, 144 u32 *data) 145 { 146 return __smsc95xx_read_reg(dev, index, data, 0); 147 } 148 149 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, 150 u32 data) 151 { 152 return __smsc95xx_write_reg(dev, index, data, 0); 153 } 154 155 /* Loop until the read is completed with timeout 156 * called with phy_mutex held */ 157 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev, 158 int in_pm) 159 { 160 unsigned long start_time = jiffies; 161 u32 val; 162 int ret; 163 164 do { 165 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm); 166 if (ret < 0) { 167 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 168 return ret; 169 } 170 171 if (!(val & MII_BUSY_)) 172 return 0; 173 } while (!time_after(jiffies, start_time + HZ)); 174 175 return -EIO; 176 } 177 178 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 179 int in_pm) 180 { 181 struct usbnet *dev = netdev_priv(netdev); 182 u32 val, addr; 183 int ret; 184 185 mutex_lock(&dev->phy_mutex); 186 187 /* confirm MII not busy */ 188 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 189 if (ret < 0) { 190 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); 191 goto done; 192 } 193 194 /* set the address, index & direction (read from PHY) */ 195 phy_id &= dev->mii.phy_id_mask; 196 idx &= dev->mii.reg_num_mask; 197 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_; 198 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 199 if (ret < 0) { 200 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 201 goto done; 202 } 203 204 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 205 if (ret < 0) { 206 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 207 goto done; 208 } 209 210 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm); 211 if (ret < 0) { 212 netdev_warn(dev->net, "Error reading MII_DATA\n"); 213 goto done; 214 } 215 216 ret = (u16)(val & 0xFFFF); 217 218 done: 219 mutex_unlock(&dev->phy_mutex); 220 return ret; 221 } 222 223 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id, 224 int idx, int regval, int in_pm) 225 { 226 struct usbnet *dev = netdev_priv(netdev); 227 u32 val, addr; 228 int ret; 229 230 mutex_lock(&dev->phy_mutex); 231 232 /* confirm MII not busy */ 233 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 234 if (ret < 0) { 235 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); 236 goto done; 237 } 238 239 val = regval; 240 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm); 241 if (ret < 0) { 242 netdev_warn(dev->net, "Error writing MII_DATA\n"); 243 goto done; 244 } 245 246 /* set the address, index & direction (write to PHY) */ 247 phy_id &= dev->mii.phy_id_mask; 248 idx &= dev->mii.reg_num_mask; 249 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_; 250 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 251 if (ret < 0) { 252 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 253 goto done; 254 } 255 256 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 257 if (ret < 0) { 258 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 259 goto done; 260 } 261 262 done: 263 mutex_unlock(&dev->phy_mutex); 264 } 265 266 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 267 int idx) 268 { 269 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1); 270 } 271 272 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 273 int idx, int regval) 274 { 275 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1); 276 } 277 278 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 279 { 280 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0); 281 } 282 283 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 284 int regval) 285 { 286 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0); 287 } 288 289 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) 290 { 291 unsigned long start_time = jiffies; 292 u32 val; 293 int ret; 294 295 do { 296 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 297 if (ret < 0) { 298 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 299 return ret; 300 } 301 302 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) 303 break; 304 udelay(40); 305 } while (!time_after(jiffies, start_time + HZ)); 306 307 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { 308 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 309 return -EIO; 310 } 311 312 return 0; 313 } 314 315 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) 316 { 317 unsigned long start_time = jiffies; 318 u32 val; 319 int ret; 320 321 do { 322 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 323 if (ret < 0) { 324 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 325 return ret; 326 } 327 328 if (!(val & E2P_CMD_BUSY_)) 329 return 0; 330 331 udelay(40); 332 } while (!time_after(jiffies, start_time + HZ)); 333 334 netdev_warn(dev->net, "EEPROM is busy\n"); 335 return -EIO; 336 } 337 338 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 339 u8 *data) 340 { 341 u32 val; 342 int i, ret; 343 344 BUG_ON(!dev); 345 BUG_ON(!data); 346 347 ret = smsc95xx_eeprom_confirm_not_busy(dev); 348 if (ret) 349 return ret; 350 351 for (i = 0; i < length; i++) { 352 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); 353 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 354 if (ret < 0) { 355 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 356 return ret; 357 } 358 359 ret = smsc95xx_wait_eeprom(dev); 360 if (ret < 0) 361 return ret; 362 363 ret = smsc95xx_read_reg(dev, E2P_DATA, &val); 364 if (ret < 0) { 365 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 366 return ret; 367 } 368 369 data[i] = val & 0xFF; 370 offset++; 371 } 372 373 return 0; 374 } 375 376 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 377 u8 *data) 378 { 379 u32 val; 380 int i, ret; 381 382 BUG_ON(!dev); 383 BUG_ON(!data); 384 385 ret = smsc95xx_eeprom_confirm_not_busy(dev); 386 if (ret) 387 return ret; 388 389 /* Issue write/erase enable command */ 390 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; 391 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 392 if (ret < 0) { 393 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 394 return ret; 395 } 396 397 ret = smsc95xx_wait_eeprom(dev); 398 if (ret < 0) 399 return ret; 400 401 for (i = 0; i < length; i++) { 402 403 /* Fill data register */ 404 val = data[i]; 405 ret = smsc95xx_write_reg(dev, E2P_DATA, val); 406 if (ret < 0) { 407 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 408 return ret; 409 } 410 411 /* Send "write" command */ 412 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); 413 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 414 if (ret < 0) { 415 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 416 return ret; 417 } 418 419 ret = smsc95xx_wait_eeprom(dev); 420 if (ret < 0) 421 return ret; 422 423 offset++; 424 } 425 426 return 0; 427 } 428 429 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, 430 u32 data) 431 { 432 const u16 size = 4; 433 u32 buf; 434 int ret; 435 436 buf = data; 437 cpu_to_le32s(&buf); 438 439 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, 440 USB_DIR_OUT | USB_TYPE_VENDOR | 441 USB_RECIP_DEVICE, 442 0, index, &buf, size); 443 if (ret < 0) 444 netdev_warn(dev->net, "Error write async cmd, sts=%d\n", 445 ret); 446 return ret; 447 } 448 449 /* returns hash bit number for given MAC address 450 * example: 451 * 01 00 5E 00 00 01 -> returns bit number 31 */ 452 static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) 453 { 454 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; 455 } 456 457 static void smsc95xx_set_multicast(struct net_device *netdev) 458 { 459 struct usbnet *dev = netdev_priv(netdev); 460 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 461 unsigned long flags; 462 int ret; 463 464 pdata->hash_hi = 0; 465 pdata->hash_lo = 0; 466 467 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 468 469 if (dev->net->flags & IFF_PROMISC) { 470 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 471 pdata->mac_cr |= MAC_CR_PRMS_; 472 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 473 } else if (dev->net->flags & IFF_ALLMULTI) { 474 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 475 pdata->mac_cr |= MAC_CR_MCPAS_; 476 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); 477 } else if (!netdev_mc_empty(dev->net)) { 478 struct netdev_hw_addr *ha; 479 480 pdata->mac_cr |= MAC_CR_HPFILT_; 481 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); 482 483 netdev_for_each_mc_addr(ha, netdev) { 484 u32 bitnum = smsc95xx_hash(ha->addr); 485 u32 mask = 0x01 << (bitnum & 0x1F); 486 if (bitnum & 0x20) 487 pdata->hash_hi |= mask; 488 else 489 pdata->hash_lo |= mask; 490 } 491 492 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", 493 pdata->hash_hi, pdata->hash_lo); 494 } else { 495 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 496 pdata->mac_cr &= 497 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 498 } 499 500 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 501 502 /* Initiate async writes, as we can't wait for completion here */ 503 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi); 504 if (ret < 0) 505 netdev_warn(dev->net, "failed to initiate async write to HASHH\n"); 506 507 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo); 508 if (ret < 0) 509 netdev_warn(dev->net, "failed to initiate async write to HASHL\n"); 510 511 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr); 512 if (ret < 0) 513 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n"); 514 } 515 516 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, 517 u16 lcladv, u16 rmtadv) 518 { 519 u32 flow, afc_cfg = 0; 520 521 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); 522 if (ret < 0) 523 return ret; 524 525 if (duplex == DUPLEX_FULL) { 526 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 527 528 if (cap & FLOW_CTRL_RX) 529 flow = 0xFFFF0002; 530 else 531 flow = 0; 532 533 if (cap & FLOW_CTRL_TX) 534 afc_cfg |= 0xF; 535 else 536 afc_cfg &= ~0xF; 537 538 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 539 cap & FLOW_CTRL_RX ? "enabled" : "disabled", 540 cap & FLOW_CTRL_TX ? "enabled" : "disabled"); 541 } else { 542 netif_dbg(dev, link, dev->net, "half duplex\n"); 543 flow = 0; 544 afc_cfg |= 0xF; 545 } 546 547 ret = smsc95xx_write_reg(dev, FLOW, flow); 548 if (ret < 0) 549 return ret; 550 551 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); 552 } 553 554 static int smsc95xx_link_reset(struct usbnet *dev) 555 { 556 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 557 struct mii_if_info *mii = &dev->mii; 558 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 559 unsigned long flags; 560 u16 lcladv, rmtadv; 561 int ret; 562 563 /* clear interrupt status */ 564 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); 565 if (ret < 0) 566 return ret; 567 568 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 569 if (ret < 0) 570 return ret; 571 572 mii_check_media(mii, 1, 1); 573 mii_ethtool_gset(&dev->mii, &ecmd); 574 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 575 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 576 577 netif_dbg(dev, link, dev->net, 578 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 579 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 580 581 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 582 if (ecmd.duplex != DUPLEX_FULL) { 583 pdata->mac_cr &= ~MAC_CR_FDPX_; 584 pdata->mac_cr |= MAC_CR_RCVOWN_; 585 } else { 586 pdata->mac_cr &= ~MAC_CR_RCVOWN_; 587 pdata->mac_cr |= MAC_CR_FDPX_; 588 } 589 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 590 591 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 592 if (ret < 0) 593 return ret; 594 595 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 596 if (ret < 0) 597 netdev_warn(dev->net, "Error updating PHY flow control\n"); 598 599 return ret; 600 } 601 602 static void smsc95xx_status(struct usbnet *dev, struct urb *urb) 603 { 604 u32 intdata; 605 606 if (urb->actual_length != 4) { 607 netdev_warn(dev->net, "unexpected urb length %d\n", 608 urb->actual_length); 609 return; 610 } 611 612 memcpy(&intdata, urb->transfer_buffer, 4); 613 le32_to_cpus(&intdata); 614 615 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 616 617 if (intdata & INT_ENP_PHY_INT_) 618 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 619 else 620 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 621 intdata); 622 } 623 624 /* Enable or disable Tx & Rx checksum offload engines */ 625 static int smsc95xx_set_features(struct net_device *netdev, 626 netdev_features_t features) 627 { 628 struct usbnet *dev = netdev_priv(netdev); 629 u32 read_buf; 630 int ret; 631 632 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); 633 if (ret < 0) 634 return ret; 635 636 if (features & NETIF_F_HW_CSUM) 637 read_buf |= Tx_COE_EN_; 638 else 639 read_buf &= ~Tx_COE_EN_; 640 641 if (features & NETIF_F_RXCSUM) 642 read_buf |= Rx_COE_EN_; 643 else 644 read_buf &= ~Rx_COE_EN_; 645 646 ret = smsc95xx_write_reg(dev, COE_CR, read_buf); 647 if (ret < 0) 648 return ret; 649 650 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); 651 return 0; 652 } 653 654 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) 655 { 656 return MAX_EEPROM_SIZE; 657 } 658 659 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, 660 struct ethtool_eeprom *ee, u8 *data) 661 { 662 struct usbnet *dev = netdev_priv(netdev); 663 664 ee->magic = LAN95XX_EEPROM_MAGIC; 665 666 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); 667 } 668 669 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, 670 struct ethtool_eeprom *ee, u8 *data) 671 { 672 struct usbnet *dev = netdev_priv(netdev); 673 674 if (ee->magic != LAN95XX_EEPROM_MAGIC) { 675 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", 676 ee->magic); 677 return -EINVAL; 678 } 679 680 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); 681 } 682 683 static int smsc95xx_ethtool_getregslen(struct net_device *netdev) 684 { 685 /* all smsc95xx registers */ 686 return COE_CR - ID_REV + sizeof(u32); 687 } 688 689 static void 690 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, 691 void *buf) 692 { 693 struct usbnet *dev = netdev_priv(netdev); 694 unsigned int i, j; 695 int retval; 696 u32 *data = buf; 697 698 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); 699 if (retval < 0) { 700 netdev_warn(netdev, "REGS: cannot read ID_REV\n"); 701 return; 702 } 703 704 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { 705 retval = smsc95xx_read_reg(dev, i, &data[j]); 706 if (retval < 0) { 707 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); 708 return; 709 } 710 } 711 } 712 713 static void smsc95xx_ethtool_get_wol(struct net_device *net, 714 struct ethtool_wolinfo *wolinfo) 715 { 716 struct usbnet *dev = netdev_priv(net); 717 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 718 719 wolinfo->supported = SUPPORTED_WAKE; 720 wolinfo->wolopts = pdata->wolopts; 721 } 722 723 static int smsc95xx_ethtool_set_wol(struct net_device *net, 724 struct ethtool_wolinfo *wolinfo) 725 { 726 struct usbnet *dev = netdev_priv(net); 727 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 728 int ret; 729 730 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 731 732 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 733 if (ret < 0) 734 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 735 736 return ret; 737 } 738 739 static const struct ethtool_ops smsc95xx_ethtool_ops = { 740 .get_link = usbnet_get_link, 741 .nway_reset = usbnet_nway_reset, 742 .get_drvinfo = usbnet_get_drvinfo, 743 .get_msglevel = usbnet_get_msglevel, 744 .set_msglevel = usbnet_set_msglevel, 745 .get_settings = usbnet_get_settings, 746 .set_settings = usbnet_set_settings, 747 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, 748 .get_eeprom = smsc95xx_ethtool_get_eeprom, 749 .set_eeprom = smsc95xx_ethtool_set_eeprom, 750 .get_regs_len = smsc95xx_ethtool_getregslen, 751 .get_regs = smsc95xx_ethtool_getregs, 752 .get_wol = smsc95xx_ethtool_get_wol, 753 .set_wol = smsc95xx_ethtool_set_wol, 754 }; 755 756 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 757 { 758 struct usbnet *dev = netdev_priv(netdev); 759 760 if (!netif_running(netdev)) 761 return -EINVAL; 762 763 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 764 } 765 766 static void smsc95xx_init_mac_address(struct usbnet *dev) 767 { 768 /* try reading mac address from EEPROM */ 769 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 770 dev->net->dev_addr) == 0) { 771 if (is_valid_ether_addr(dev->net->dev_addr)) { 772 /* eeprom values are valid so use them */ 773 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); 774 return; 775 } 776 } 777 778 /* no eeprom, or eeprom values are invalid. generate random MAC */ 779 eth_hw_addr_random(dev->net); 780 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 781 } 782 783 static int smsc95xx_set_mac_address(struct usbnet *dev) 784 { 785 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 786 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 787 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 788 int ret; 789 790 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); 791 if (ret < 0) 792 return ret; 793 794 return smsc95xx_write_reg(dev, ADDRH, addr_hi); 795 } 796 797 /* starts the TX path */ 798 static int smsc95xx_start_tx_path(struct usbnet *dev) 799 { 800 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 801 unsigned long flags; 802 int ret; 803 804 /* Enable Tx at MAC */ 805 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 806 pdata->mac_cr |= MAC_CR_TXEN_; 807 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 808 809 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 810 if (ret < 0) 811 return ret; 812 813 /* Enable Tx at SCSRs */ 814 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); 815 } 816 817 /* Starts the Receive path */ 818 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm) 819 { 820 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 821 unsigned long flags; 822 823 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 824 pdata->mac_cr |= MAC_CR_RXEN_; 825 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 826 827 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm); 828 } 829 830 static int smsc95xx_phy_initialize(struct usbnet *dev) 831 { 832 int bmcr, ret, timeout = 0; 833 834 /* Initialize MII structure */ 835 dev->mii.dev = dev->net; 836 dev->mii.mdio_read = smsc95xx_mdio_read; 837 dev->mii.mdio_write = smsc95xx_mdio_write; 838 dev->mii.phy_id_mask = 0x1f; 839 dev->mii.reg_num_mask = 0x1f; 840 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; 841 842 /* reset phy and wait for reset to complete */ 843 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 844 845 do { 846 msleep(10); 847 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 848 timeout++; 849 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 850 851 if (timeout >= 100) { 852 netdev_warn(dev->net, "timeout on PHY Reset"); 853 return -EIO; 854 } 855 856 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 857 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 858 ADVERTISE_PAUSE_ASYM); 859 860 /* read to clear */ 861 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 862 if (ret < 0) { 863 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n"); 864 return ret; 865 } 866 867 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 868 PHY_INT_MASK_DEFAULT_); 869 mii_nway_restart(&dev->mii); 870 871 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 872 return 0; 873 } 874 875 static int smsc95xx_reset(struct usbnet *dev) 876 { 877 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 878 u32 read_buf, write_buf, burst_cap; 879 int ret = 0, timeout; 880 881 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); 882 883 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_); 884 if (ret < 0) 885 return ret; 886 887 timeout = 0; 888 do { 889 msleep(10); 890 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 891 if (ret < 0) 892 return ret; 893 timeout++; 894 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); 895 896 if (timeout >= 100) { 897 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); 898 return ret; 899 } 900 901 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_); 902 if (ret < 0) 903 return ret; 904 905 timeout = 0; 906 do { 907 msleep(10); 908 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); 909 if (ret < 0) 910 return ret; 911 timeout++; 912 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); 913 914 if (timeout >= 100) { 915 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 916 return ret; 917 } 918 919 ret = smsc95xx_set_mac_address(dev); 920 if (ret < 0) 921 return ret; 922 923 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 924 dev->net->dev_addr); 925 926 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 927 if (ret < 0) 928 return ret; 929 930 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 931 read_buf); 932 933 read_buf |= HW_CFG_BIR_; 934 935 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 936 if (ret < 0) 937 return ret; 938 939 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 940 if (ret < 0) 941 return ret; 942 943 netif_dbg(dev, ifup, dev->net, 944 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", 945 read_buf); 946 947 if (!turbo_mode) { 948 burst_cap = 0; 949 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 950 } else if (dev->udev->speed == USB_SPEED_HIGH) { 951 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 952 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 953 } else { 954 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 955 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 956 } 957 958 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 959 (ulong)dev->rx_urb_size); 960 961 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); 962 if (ret < 0) 963 return ret; 964 965 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); 966 if (ret < 0) 967 return ret; 968 969 netif_dbg(dev, ifup, dev->net, 970 "Read Value from BURST_CAP after writing: 0x%08x\n", 971 read_buf); 972 973 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 974 if (ret < 0) 975 return ret; 976 977 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); 978 if (ret < 0) 979 return ret; 980 981 netif_dbg(dev, ifup, dev->net, 982 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", 983 read_buf); 984 985 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 986 if (ret < 0) 987 return ret; 988 989 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", 990 read_buf); 991 992 if (turbo_mode) 993 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); 994 995 read_buf &= ~HW_CFG_RXDOFF_; 996 997 /* set Rx data offset=2, Make IP header aligns on word boundary. */ 998 read_buf |= NET_IP_ALIGN << 9; 999 1000 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 1001 if (ret < 0) 1002 return ret; 1003 1004 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 1005 if (ret < 0) 1006 return ret; 1007 1008 netif_dbg(dev, ifup, dev->net, 1009 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); 1010 1011 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 1012 if (ret < 0) 1013 return ret; 1014 1015 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); 1016 if (ret < 0) 1017 return ret; 1018 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); 1019 1020 /* Configure GPIO pins as LED outputs */ 1021 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | 1022 LED_GPIO_CFG_FDX_LED; 1023 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); 1024 if (ret < 0) 1025 return ret; 1026 1027 /* Init Tx */ 1028 ret = smsc95xx_write_reg(dev, FLOW, 0); 1029 if (ret < 0) 1030 return ret; 1031 1032 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT); 1033 if (ret < 0) 1034 return ret; 1035 1036 /* Don't need mac_cr_lock during initialisation */ 1037 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); 1038 if (ret < 0) 1039 return ret; 1040 1041 /* Init Rx */ 1042 /* Set Vlan */ 1043 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q); 1044 if (ret < 0) 1045 return ret; 1046 1047 /* Enable or disable checksum offload engines */ 1048 ret = smsc95xx_set_features(dev->net, dev->net->features); 1049 if (ret < 0) { 1050 netdev_warn(dev->net, "Failed to set checksum offload features\n"); 1051 return ret; 1052 } 1053 1054 smsc95xx_set_multicast(dev->net); 1055 1056 ret = smsc95xx_phy_initialize(dev); 1057 if (ret < 0) { 1058 netdev_warn(dev->net, "Failed to init PHY\n"); 1059 return ret; 1060 } 1061 1062 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); 1063 if (ret < 0) 1064 return ret; 1065 1066 /* enable PHY interrupts */ 1067 read_buf |= INT_EP_CTL_PHY_INT_; 1068 1069 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); 1070 if (ret < 0) 1071 return ret; 1072 1073 ret = smsc95xx_start_tx_path(dev); 1074 if (ret < 0) { 1075 netdev_warn(dev->net, "Failed to start TX path\n"); 1076 return ret; 1077 } 1078 1079 ret = smsc95xx_start_rx_path(dev, 0); 1080 if (ret < 0) { 1081 netdev_warn(dev->net, "Failed to start RX path\n"); 1082 return ret; 1083 } 1084 1085 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); 1086 return 0; 1087 } 1088 1089 static const struct net_device_ops smsc95xx_netdev_ops = { 1090 .ndo_open = usbnet_open, 1091 .ndo_stop = usbnet_stop, 1092 .ndo_start_xmit = usbnet_start_xmit, 1093 .ndo_tx_timeout = usbnet_tx_timeout, 1094 .ndo_change_mtu = usbnet_change_mtu, 1095 .ndo_set_mac_address = eth_mac_addr, 1096 .ndo_validate_addr = eth_validate_addr, 1097 .ndo_do_ioctl = smsc95xx_ioctl, 1098 .ndo_set_rx_mode = smsc95xx_set_multicast, 1099 .ndo_set_features = smsc95xx_set_features, 1100 }; 1101 1102 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) 1103 { 1104 struct smsc95xx_priv *pdata = NULL; 1105 u32 val; 1106 int ret; 1107 1108 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1109 1110 ret = usbnet_get_endpoints(dev, intf); 1111 if (ret < 0) { 1112 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1113 return ret; 1114 } 1115 1116 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), 1117 GFP_KERNEL); 1118 1119 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1120 if (!pdata) 1121 return -ENOMEM; 1122 1123 spin_lock_init(&pdata->mac_cr_lock); 1124 1125 if (DEFAULT_TX_CSUM_ENABLE) 1126 dev->net->features |= NETIF_F_HW_CSUM; 1127 if (DEFAULT_RX_CSUM_ENABLE) 1128 dev->net->features |= NETIF_F_RXCSUM; 1129 1130 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; 1131 1132 smsc95xx_init_mac_address(dev); 1133 1134 /* Init all registers */ 1135 ret = smsc95xx_reset(dev); 1136 1137 /* detect device revision as different features may be available */ 1138 ret = smsc95xx_read_reg(dev, ID_REV, &val); 1139 if (ret < 0) 1140 return ret; 1141 val >>= 16; 1142 1143 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) || 1144 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_)) 1145 pdata->features = (FEATURE_8_WAKEUP_FILTERS | 1146 FEATURE_PHY_NLP_CROSSOVER | 1147 FEATURE_REMOTE_WAKEUP); 1148 else if (val == ID_REV_CHIP_ID_9512_) 1149 pdata->features = FEATURE_8_WAKEUP_FILTERS; 1150 1151 dev->net->netdev_ops = &smsc95xx_netdev_ops; 1152 dev->net->ethtool_ops = &smsc95xx_ethtool_ops; 1153 dev->net->flags |= IFF_MULTICAST; 1154 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; 1155 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1156 return 0; 1157 } 1158 1159 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1160 { 1161 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1162 if (pdata) { 1163 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1164 kfree(pdata); 1165 pdata = NULL; 1166 dev->data[0] = 0; 1167 } 1168 } 1169 1170 static u32 smsc_crc(const u8 *buffer, size_t len, int filter) 1171 { 1172 u32 crc = bitrev16(crc16(0xFFFF, buffer, len)); 1173 return crc << ((filter % 2) * 16); 1174 } 1175 1176 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1177 { 1178 struct mii_if_info *mii = &dev->mii; 1179 int ret; 1180 1181 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1182 1183 /* read to clear */ 1184 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1185 if (ret < 0) 1186 return ret; 1187 1188 /* enable interrupt source */ 1189 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1190 if (ret < 0) 1191 return ret; 1192 1193 ret |= mask; 1194 1195 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1196 1197 return 0; 1198 } 1199 1200 static int smsc95xx_link_ok_nopm(struct usbnet *dev) 1201 { 1202 struct mii_if_info *mii = &dev->mii; 1203 int ret; 1204 1205 /* first, a dummy read, needed to latch some MII phys */ 1206 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1207 if (ret < 0) 1208 return ret; 1209 1210 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1211 if (ret < 0) 1212 return ret; 1213 1214 return !!(ret & BMSR_LSTATUS); 1215 } 1216 1217 static int smsc95xx_enter_suspend0(struct usbnet *dev) 1218 { 1219 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1220 u32 val; 1221 int ret; 1222 1223 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1224 if (ret < 0) 1225 return ret; 1226 1227 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); 1228 val |= PM_CTL_SUS_MODE_0; 1229 1230 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1231 if (ret < 0) 1232 return ret; 1233 1234 /* clear wol status */ 1235 val &= ~PM_CTL_WUPS_; 1236 val |= PM_CTL_WUPS_WOL_; 1237 1238 /* enable energy detection */ 1239 if (pdata->wolopts & WAKE_PHY) 1240 val |= PM_CTL_WUPS_ED_; 1241 1242 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1243 if (ret < 0) 1244 return ret; 1245 1246 /* read back PM_CTRL */ 1247 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1248 if (ret < 0) 1249 return ret; 1250 1251 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1252 1253 return 0; 1254 } 1255 1256 static int smsc95xx_enter_suspend1(struct usbnet *dev) 1257 { 1258 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1259 struct mii_if_info *mii = &dev->mii; 1260 u32 val; 1261 int ret; 1262 1263 /* reconfigure link pulse detection timing for 1264 * compatibility with non-standard link partners 1265 */ 1266 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) 1267 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG, 1268 PHY_EDPD_CONFIG_DEFAULT); 1269 1270 /* enable energy detect power-down mode */ 1271 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS); 1272 if (ret < 0) 1273 return ret; 1274 1275 ret |= MODE_CTRL_STS_EDPWRDOWN_; 1276 1277 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret); 1278 1279 /* enter SUSPEND1 mode */ 1280 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1281 if (ret < 0) 1282 return ret; 1283 1284 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1285 val |= PM_CTL_SUS_MODE_1; 1286 1287 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1288 if (ret < 0) 1289 return ret; 1290 1291 /* clear wol status, enable energy detection */ 1292 val &= ~PM_CTL_WUPS_; 1293 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); 1294 1295 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1296 if (ret < 0) 1297 return ret; 1298 1299 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1300 1301 return 0; 1302 } 1303 1304 static int smsc95xx_enter_suspend2(struct usbnet *dev) 1305 { 1306 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1307 u32 val; 1308 int ret; 1309 1310 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1311 if (ret < 0) 1312 return ret; 1313 1314 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1315 val |= PM_CTL_SUS_MODE_2; 1316 1317 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1318 if (ret < 0) 1319 return ret; 1320 1321 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1322 1323 return 0; 1324 } 1325 1326 static int smsc95xx_enter_suspend3(struct usbnet *dev) 1327 { 1328 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1329 u32 val; 1330 int ret; 1331 1332 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val); 1333 if (ret < 0) 1334 return ret; 1335 1336 if (val & 0xFFFF) { 1337 netdev_info(dev->net, "rx fifo not empty in autosuspend\n"); 1338 return -EBUSY; 1339 } 1340 1341 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1342 if (ret < 0) 1343 return ret; 1344 1345 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1346 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS; 1347 1348 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1349 if (ret < 0) 1350 return ret; 1351 1352 /* clear wol status */ 1353 val &= ~PM_CTL_WUPS_; 1354 val |= PM_CTL_WUPS_WOL_; 1355 1356 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1357 if (ret < 0) 1358 return ret; 1359 1360 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1361 1362 return 0; 1363 } 1364 1365 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up) 1366 { 1367 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1368 int ret; 1369 1370 if (!netif_running(dev->net)) { 1371 /* interface is ifconfig down so fully power down hw */ 1372 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1373 return smsc95xx_enter_suspend2(dev); 1374 } 1375 1376 if (!link_up) { 1377 /* link is down so enter EDPD mode, but only if device can 1378 * reliably resume from it. This check should be redundant 1379 * as current FEATURE_REMOTE_WAKEUP parts also support 1380 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */ 1381 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) { 1382 netdev_warn(dev->net, "EDPD not supported\n"); 1383 return -EBUSY; 1384 } 1385 1386 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1387 1388 /* enable PHY wakeup events for if cable is attached */ 1389 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1390 PHY_INT_MASK_ANEG_COMP_); 1391 if (ret < 0) { 1392 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1393 return ret; 1394 } 1395 1396 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1397 return smsc95xx_enter_suspend1(dev); 1398 } 1399 1400 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1401 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1402 PHY_INT_MASK_LINK_DOWN_); 1403 if (ret < 0) { 1404 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1405 return ret; 1406 } 1407 1408 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1409 return smsc95xx_enter_suspend3(dev); 1410 } 1411 1412 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) 1413 { 1414 struct usbnet *dev = usb_get_intfdata(intf); 1415 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1416 u32 val, link_up; 1417 int ret; 1418 1419 ret = usbnet_suspend(intf, message); 1420 if (ret < 0) { 1421 netdev_warn(dev->net, "usbnet_suspend error\n"); 1422 return ret; 1423 } 1424 1425 if (pdata->suspend_flags) { 1426 netdev_warn(dev->net, "error during last resume\n"); 1427 pdata->suspend_flags = 0; 1428 } 1429 1430 /* determine if link is up using only _nopm functions */ 1431 link_up = smsc95xx_link_ok_nopm(dev); 1432 1433 if (message.event == PM_EVENT_AUTO_SUSPEND && 1434 (pdata->features & FEATURE_REMOTE_WAKEUP)) { 1435 ret = smsc95xx_autosuspend(dev, link_up); 1436 goto done; 1437 } 1438 1439 /* if we get this far we're not autosuspending */ 1440 /* if no wol options set, or if link is down and we're not waking on 1441 * PHY activity, enter lowest power SUSPEND2 mode 1442 */ 1443 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1444 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1445 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1446 1447 /* disable energy detect (link up) & wake up events */ 1448 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1449 if (ret < 0) 1450 goto done; 1451 1452 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); 1453 1454 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1455 if (ret < 0) 1456 goto done; 1457 1458 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1459 if (ret < 0) 1460 goto done; 1461 1462 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); 1463 1464 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1465 if (ret < 0) 1466 goto done; 1467 1468 ret = smsc95xx_enter_suspend2(dev); 1469 goto done; 1470 } 1471 1472 if (pdata->wolopts & WAKE_PHY) { 1473 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1474 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_)); 1475 if (ret < 0) { 1476 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1477 goto done; 1478 } 1479 1480 /* if link is down then configure EDPD and enter SUSPEND1, 1481 * otherwise enter SUSPEND0 below 1482 */ 1483 if (!link_up) { 1484 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1485 ret = smsc95xx_enter_suspend1(dev); 1486 goto done; 1487 } 1488 } 1489 1490 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1491 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL); 1492 u32 command[2]; 1493 u32 offset[2]; 1494 u32 crc[4]; 1495 int wuff_filter_count = 1496 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ? 1497 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM; 1498 int i, filter = 0; 1499 1500 if (!filter_mask) { 1501 netdev_warn(dev->net, "Unable to allocate filter_mask\n"); 1502 ret = -ENOMEM; 1503 goto done; 1504 } 1505 1506 memset(command, 0, sizeof(command)); 1507 memset(offset, 0, sizeof(offset)); 1508 memset(crc, 0, sizeof(crc)); 1509 1510 if (pdata->wolopts & WAKE_BCAST) { 1511 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1512 netdev_info(dev->net, "enabling broadcast detection\n"); 1513 filter_mask[filter * 4] = 0x003F; 1514 filter_mask[filter * 4 + 1] = 0x00; 1515 filter_mask[filter * 4 + 2] = 0x00; 1516 filter_mask[filter * 4 + 3] = 0x00; 1517 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1518 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1519 crc[filter/2] |= smsc_crc(bcast, 6, filter); 1520 filter++; 1521 } 1522 1523 if (pdata->wolopts & WAKE_MCAST) { 1524 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1525 netdev_info(dev->net, "enabling multicast detection\n"); 1526 filter_mask[filter * 4] = 0x0007; 1527 filter_mask[filter * 4 + 1] = 0x00; 1528 filter_mask[filter * 4 + 2] = 0x00; 1529 filter_mask[filter * 4 + 3] = 0x00; 1530 command[filter/4] |= 0x09UL << ((filter % 4) * 8); 1531 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1532 crc[filter/2] |= smsc_crc(mcast, 3, filter); 1533 filter++; 1534 } 1535 1536 if (pdata->wolopts & WAKE_ARP) { 1537 const u8 arp[] = {0x08, 0x06}; 1538 netdev_info(dev->net, "enabling ARP detection\n"); 1539 filter_mask[filter * 4] = 0x0003; 1540 filter_mask[filter * 4 + 1] = 0x00; 1541 filter_mask[filter * 4 + 2] = 0x00; 1542 filter_mask[filter * 4 + 3] = 0x00; 1543 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1544 offset[filter/4] |= 0x0C << ((filter % 4) * 8); 1545 crc[filter/2] |= smsc_crc(arp, 2, filter); 1546 filter++; 1547 } 1548 1549 if (pdata->wolopts & WAKE_UCAST) { 1550 netdev_info(dev->net, "enabling unicast detection\n"); 1551 filter_mask[filter * 4] = 0x003F; 1552 filter_mask[filter * 4 + 1] = 0x00; 1553 filter_mask[filter * 4 + 2] = 0x00; 1554 filter_mask[filter * 4 + 3] = 0x00; 1555 command[filter/4] |= 0x01UL << ((filter % 4) * 8); 1556 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1557 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter); 1558 filter++; 1559 } 1560 1561 for (i = 0; i < (wuff_filter_count * 4); i++) { 1562 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]); 1563 if (ret < 0) { 1564 kfree(filter_mask); 1565 goto done; 1566 } 1567 } 1568 kfree(filter_mask); 1569 1570 for (i = 0; i < (wuff_filter_count / 4); i++) { 1571 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]); 1572 if (ret < 0) 1573 goto done; 1574 } 1575 1576 for (i = 0; i < (wuff_filter_count / 4); i++) { 1577 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]); 1578 if (ret < 0) 1579 goto done; 1580 } 1581 1582 for (i = 0; i < (wuff_filter_count / 2); i++) { 1583 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]); 1584 if (ret < 0) 1585 goto done; 1586 } 1587 1588 /* clear any pending pattern match packet status */ 1589 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1590 if (ret < 0) 1591 goto done; 1592 1593 val |= WUCSR_WUFR_; 1594 1595 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1596 if (ret < 0) 1597 goto done; 1598 } 1599 1600 if (pdata->wolopts & WAKE_MAGIC) { 1601 /* clear any pending magic packet status */ 1602 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1603 if (ret < 0) 1604 goto done; 1605 1606 val |= WUCSR_MPR_; 1607 1608 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1609 if (ret < 0) 1610 goto done; 1611 } 1612 1613 /* enable/disable wakeup sources */ 1614 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1615 if (ret < 0) 1616 goto done; 1617 1618 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1619 netdev_info(dev->net, "enabling pattern match wakeup\n"); 1620 val |= WUCSR_WAKE_EN_; 1621 } else { 1622 netdev_info(dev->net, "disabling pattern match wakeup\n"); 1623 val &= ~WUCSR_WAKE_EN_; 1624 } 1625 1626 if (pdata->wolopts & WAKE_MAGIC) { 1627 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1628 val |= WUCSR_MPEN_; 1629 } else { 1630 netdev_info(dev->net, "disabling magic packet wakeup\n"); 1631 val &= ~WUCSR_MPEN_; 1632 } 1633 1634 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1635 if (ret < 0) 1636 goto done; 1637 1638 /* enable wol wakeup source */ 1639 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1640 if (ret < 0) 1641 goto done; 1642 1643 val |= PM_CTL_WOL_EN_; 1644 1645 /* phy energy detect wakeup source */ 1646 if (pdata->wolopts & WAKE_PHY) 1647 val |= PM_CTL_ED_EN_; 1648 1649 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1650 if (ret < 0) 1651 goto done; 1652 1653 /* enable receiver to enable frame reception */ 1654 smsc95xx_start_rx_path(dev, 1); 1655 1656 /* some wol options are enabled, so enter SUSPEND0 */ 1657 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 1658 ret = smsc95xx_enter_suspend0(dev); 1659 1660 done: 1661 /* 1662 * TODO: resume() might need to handle the suspend failure 1663 * in system sleep 1664 */ 1665 if (ret && PMSG_IS_AUTO(message)) 1666 usbnet_resume(intf); 1667 return ret; 1668 } 1669 1670 static int smsc95xx_resume(struct usb_interface *intf) 1671 { 1672 struct usbnet *dev = usb_get_intfdata(intf); 1673 struct smsc95xx_priv *pdata; 1674 u8 suspend_flags; 1675 int ret; 1676 u32 val; 1677 1678 BUG_ON(!dev); 1679 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1680 suspend_flags = pdata->suspend_flags; 1681 1682 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 1683 1684 /* do this first to ensure it's cleared even in error case */ 1685 pdata->suspend_flags = 0; 1686 1687 if (suspend_flags & SUSPEND_ALLMODES) { 1688 /* clear wake-up sources */ 1689 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1690 if (ret < 0) 1691 return ret; 1692 1693 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); 1694 1695 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1696 if (ret < 0) 1697 return ret; 1698 1699 /* clear wake-up status */ 1700 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1701 if (ret < 0) 1702 return ret; 1703 1704 val &= ~PM_CTL_WOL_EN_; 1705 val |= PM_CTL_WUPS_; 1706 1707 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1708 if (ret < 0) 1709 return ret; 1710 } 1711 1712 ret = usbnet_resume(intf); 1713 if (ret < 0) 1714 netdev_warn(dev->net, "usbnet_resume error\n"); 1715 1716 return ret; 1717 } 1718 1719 static int smsc95xx_reset_resume(struct usb_interface *intf) 1720 { 1721 struct usbnet *dev = usb_get_intfdata(intf); 1722 int ret; 1723 1724 ret = smsc95xx_reset(dev); 1725 if (ret < 0) 1726 return ret; 1727 1728 return smsc95xx_resume(intf); 1729 } 1730 1731 static void smsc95xx_rx_csum_offload(struct sk_buff *skb) 1732 { 1733 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); 1734 skb->ip_summed = CHECKSUM_COMPLETE; 1735 skb_trim(skb, skb->len - 2); 1736 } 1737 1738 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 1739 { 1740 /* This check is no longer done by usbnet */ 1741 if (skb->len < dev->net->hard_header_len) 1742 return 0; 1743 1744 while (skb->len > 0) { 1745 u32 header, align_count; 1746 struct sk_buff *ax_skb; 1747 unsigned char *packet; 1748 u16 size; 1749 1750 memcpy(&header, skb->data, sizeof(header)); 1751 le32_to_cpus(&header); 1752 skb_pull(skb, 4 + NET_IP_ALIGN); 1753 packet = skb->data; 1754 1755 /* get the packet length */ 1756 size = (u16)((header & RX_STS_FL_) >> 16); 1757 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; 1758 1759 if (unlikely(header & RX_STS_ES_)) { 1760 netif_dbg(dev, rx_err, dev->net, 1761 "Error header=0x%08x\n", header); 1762 dev->net->stats.rx_errors++; 1763 dev->net->stats.rx_dropped++; 1764 1765 if (header & RX_STS_CRC_) { 1766 dev->net->stats.rx_crc_errors++; 1767 } else { 1768 if (header & (RX_STS_TL_ | RX_STS_RF_)) 1769 dev->net->stats.rx_frame_errors++; 1770 1771 if ((header & RX_STS_LE_) && 1772 (!(header & RX_STS_FT_))) 1773 dev->net->stats.rx_length_errors++; 1774 } 1775 } else { 1776 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ 1777 if (unlikely(size > (ETH_FRAME_LEN + 12))) { 1778 netif_dbg(dev, rx_err, dev->net, 1779 "size err header=0x%08x\n", header); 1780 return 0; 1781 } 1782 1783 /* last frame in this batch */ 1784 if (skb->len == size) { 1785 if (dev->net->features & NETIF_F_RXCSUM) 1786 smsc95xx_rx_csum_offload(skb); 1787 skb_trim(skb, skb->len - 4); /* remove fcs */ 1788 skb->truesize = size + sizeof(struct sk_buff); 1789 1790 return 1; 1791 } 1792 1793 ax_skb = skb_clone(skb, GFP_ATOMIC); 1794 if (unlikely(!ax_skb)) { 1795 netdev_warn(dev->net, "Error allocating skb\n"); 1796 return 0; 1797 } 1798 1799 ax_skb->len = size; 1800 ax_skb->data = packet; 1801 skb_set_tail_pointer(ax_skb, size); 1802 1803 if (dev->net->features & NETIF_F_RXCSUM) 1804 smsc95xx_rx_csum_offload(ax_skb); 1805 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 1806 ax_skb->truesize = size + sizeof(struct sk_buff); 1807 1808 usbnet_skb_return(dev, ax_skb); 1809 } 1810 1811 skb_pull(skb, size); 1812 1813 /* padding bytes before the next frame starts */ 1814 if (skb->len) 1815 skb_pull(skb, align_count); 1816 } 1817 1818 return 1; 1819 } 1820 1821 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) 1822 { 1823 u16 low_16 = (u16)skb_checksum_start_offset(skb); 1824 u16 high_16 = low_16 + skb->csum_offset; 1825 return (high_16 << 16) | low_16; 1826 } 1827 1828 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, 1829 struct sk_buff *skb, gfp_t flags) 1830 { 1831 bool csum = skb->ip_summed == CHECKSUM_PARTIAL; 1832 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; 1833 u32 tx_cmd_a, tx_cmd_b; 1834 1835 /* We do not advertise SG, so skbs should be already linearized */ 1836 BUG_ON(skb_shinfo(skb)->nr_frags); 1837 1838 if (skb_headroom(skb) < overhead) { 1839 struct sk_buff *skb2 = skb_copy_expand(skb, 1840 overhead, 0, flags); 1841 dev_kfree_skb_any(skb); 1842 skb = skb2; 1843 if (!skb) 1844 return NULL; 1845 } 1846 1847 if (csum) { 1848 if (skb->len <= 45) { 1849 /* workaround - hardware tx checksum does not work 1850 * properly with extremely small packets */ 1851 long csstart = skb_checksum_start_offset(skb); 1852 __wsum calc = csum_partial(skb->data + csstart, 1853 skb->len - csstart, 0); 1854 *((__sum16 *)(skb->data + csstart 1855 + skb->csum_offset)) = csum_fold(calc); 1856 1857 csum = false; 1858 } else { 1859 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); 1860 skb_push(skb, 4); 1861 cpu_to_le32s(&csum_preamble); 1862 memcpy(skb->data, &csum_preamble, 4); 1863 } 1864 } 1865 1866 skb_push(skb, 4); 1867 tx_cmd_b = (u32)(skb->len - 4); 1868 if (csum) 1869 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; 1870 cpu_to_le32s(&tx_cmd_b); 1871 memcpy(skb->data, &tx_cmd_b, 4); 1872 1873 skb_push(skb, 4); 1874 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | 1875 TX_CMD_A_LAST_SEG_; 1876 cpu_to_le32s(&tx_cmd_a); 1877 memcpy(skb->data, &tx_cmd_a, 4); 1878 1879 return skb; 1880 } 1881 1882 static int smsc95xx_manage_power(struct usbnet *dev, int on) 1883 { 1884 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1885 1886 dev->intf->needs_remote_wakeup = on; 1887 1888 if (pdata->features & FEATURE_REMOTE_WAKEUP) 1889 return 0; 1890 1891 /* this chip revision isn't capable of remote wakeup */ 1892 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n"); 1893 1894 if (on) 1895 usb_autopm_get_interface_no_resume(dev->intf); 1896 else 1897 usb_autopm_put_interface(dev->intf); 1898 1899 return 0; 1900 } 1901 1902 static const struct driver_info smsc95xx_info = { 1903 .description = "smsc95xx USB 2.0 Ethernet", 1904 .bind = smsc95xx_bind, 1905 .unbind = smsc95xx_unbind, 1906 .link_reset = smsc95xx_link_reset, 1907 .reset = smsc95xx_reset, 1908 .rx_fixup = smsc95xx_rx_fixup, 1909 .tx_fixup = smsc95xx_tx_fixup, 1910 .status = smsc95xx_status, 1911 .manage_power = smsc95xx_manage_power, 1912 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 1913 }; 1914 1915 static const struct usb_device_id products[] = { 1916 { 1917 /* SMSC9500 USB Ethernet Device */ 1918 USB_DEVICE(0x0424, 0x9500), 1919 .driver_info = (unsigned long) &smsc95xx_info, 1920 }, 1921 { 1922 /* SMSC9505 USB Ethernet Device */ 1923 USB_DEVICE(0x0424, 0x9505), 1924 .driver_info = (unsigned long) &smsc95xx_info, 1925 }, 1926 { 1927 /* SMSC9500A USB Ethernet Device */ 1928 USB_DEVICE(0x0424, 0x9E00), 1929 .driver_info = (unsigned long) &smsc95xx_info, 1930 }, 1931 { 1932 /* SMSC9505A USB Ethernet Device */ 1933 USB_DEVICE(0x0424, 0x9E01), 1934 .driver_info = (unsigned long) &smsc95xx_info, 1935 }, 1936 { 1937 /* SMSC9512/9514 USB Hub & Ethernet Device */ 1938 USB_DEVICE(0x0424, 0xec00), 1939 .driver_info = (unsigned long) &smsc95xx_info, 1940 }, 1941 { 1942 /* SMSC9500 USB Ethernet Device (SAL10) */ 1943 USB_DEVICE(0x0424, 0x9900), 1944 .driver_info = (unsigned long) &smsc95xx_info, 1945 }, 1946 { 1947 /* SMSC9505 USB Ethernet Device (SAL10) */ 1948 USB_DEVICE(0x0424, 0x9901), 1949 .driver_info = (unsigned long) &smsc95xx_info, 1950 }, 1951 { 1952 /* SMSC9500A USB Ethernet Device (SAL10) */ 1953 USB_DEVICE(0x0424, 0x9902), 1954 .driver_info = (unsigned long) &smsc95xx_info, 1955 }, 1956 { 1957 /* SMSC9505A USB Ethernet Device (SAL10) */ 1958 USB_DEVICE(0x0424, 0x9903), 1959 .driver_info = (unsigned long) &smsc95xx_info, 1960 }, 1961 { 1962 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ 1963 USB_DEVICE(0x0424, 0x9904), 1964 .driver_info = (unsigned long) &smsc95xx_info, 1965 }, 1966 { 1967 /* SMSC9500A USB Ethernet Device (HAL) */ 1968 USB_DEVICE(0x0424, 0x9905), 1969 .driver_info = (unsigned long) &smsc95xx_info, 1970 }, 1971 { 1972 /* SMSC9505A USB Ethernet Device (HAL) */ 1973 USB_DEVICE(0x0424, 0x9906), 1974 .driver_info = (unsigned long) &smsc95xx_info, 1975 }, 1976 { 1977 /* SMSC9500 USB Ethernet Device (Alternate ID) */ 1978 USB_DEVICE(0x0424, 0x9907), 1979 .driver_info = (unsigned long) &smsc95xx_info, 1980 }, 1981 { 1982 /* SMSC9500A USB Ethernet Device (Alternate ID) */ 1983 USB_DEVICE(0x0424, 0x9908), 1984 .driver_info = (unsigned long) &smsc95xx_info, 1985 }, 1986 { 1987 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ 1988 USB_DEVICE(0x0424, 0x9909), 1989 .driver_info = (unsigned long) &smsc95xx_info, 1990 }, 1991 { 1992 /* SMSC LAN9530 USB Ethernet Device */ 1993 USB_DEVICE(0x0424, 0x9530), 1994 .driver_info = (unsigned long) &smsc95xx_info, 1995 }, 1996 { 1997 /* SMSC LAN9730 USB Ethernet Device */ 1998 USB_DEVICE(0x0424, 0x9730), 1999 .driver_info = (unsigned long) &smsc95xx_info, 2000 }, 2001 { 2002 /* SMSC LAN89530 USB Ethernet Device */ 2003 USB_DEVICE(0x0424, 0x9E08), 2004 .driver_info = (unsigned long) &smsc95xx_info, 2005 }, 2006 { }, /* END */ 2007 }; 2008 MODULE_DEVICE_TABLE(usb, products); 2009 2010 static struct usb_driver smsc95xx_driver = { 2011 .name = "smsc95xx", 2012 .id_table = products, 2013 .probe = usbnet_probe, 2014 .suspend = smsc95xx_suspend, 2015 .resume = smsc95xx_resume, 2016 .reset_resume = smsc95xx_reset_resume, 2017 .disconnect = usbnet_disconnect, 2018 .disable_hub_initiated_lpm = 1, 2019 .supports_autosuspend = 1, 2020 }; 2021 2022 module_usb_driver(smsc95xx_driver); 2023 2024 MODULE_AUTHOR("Nancy Lin"); 2025 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2026 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); 2027 MODULE_LICENSE("GPL"); 2028