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 <linux/of_net.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 return ret; 99 } 100 101 le32_to_cpus(&buf); 102 *data = buf; 103 104 return ret; 105 } 106 107 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index, 108 u32 data, int in_pm) 109 { 110 u32 buf; 111 int ret; 112 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 113 114 BUG_ON(!dev); 115 116 if (!in_pm) 117 fn = usbnet_write_cmd; 118 else 119 fn = usbnet_write_cmd_nopm; 120 121 buf = data; 122 cpu_to_le32s(&buf); 123 124 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 125 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 126 0, index, &buf, 4); 127 if (unlikely(ret < 0)) 128 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 129 index, ret); 130 131 return ret; 132 } 133 134 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index, 135 u32 *data) 136 { 137 return __smsc95xx_read_reg(dev, index, data, 1); 138 } 139 140 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index, 141 u32 data) 142 { 143 return __smsc95xx_write_reg(dev, index, data, 1); 144 } 145 146 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, 147 u32 *data) 148 { 149 return __smsc95xx_read_reg(dev, index, data, 0); 150 } 151 152 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, 153 u32 data) 154 { 155 return __smsc95xx_write_reg(dev, index, data, 0); 156 } 157 158 /* Loop until the read is completed with timeout 159 * called with phy_mutex held */ 160 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev, 161 int in_pm) 162 { 163 unsigned long start_time = jiffies; 164 u32 val; 165 int ret; 166 167 do { 168 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm); 169 if (ret < 0) { 170 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 171 return ret; 172 } 173 174 if (!(val & MII_BUSY_)) 175 return 0; 176 } while (!time_after(jiffies, start_time + HZ)); 177 178 return -EIO; 179 } 180 181 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 182 int in_pm) 183 { 184 struct usbnet *dev = netdev_priv(netdev); 185 u32 val, addr; 186 int ret; 187 188 mutex_lock(&dev->phy_mutex); 189 190 /* confirm MII not busy */ 191 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 192 if (ret < 0) { 193 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); 194 goto done; 195 } 196 197 /* set the address, index & direction (read from PHY) */ 198 phy_id &= dev->mii.phy_id_mask; 199 idx &= dev->mii.reg_num_mask; 200 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_; 201 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 202 if (ret < 0) { 203 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 204 goto done; 205 } 206 207 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 208 if (ret < 0) { 209 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 210 goto done; 211 } 212 213 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm); 214 if (ret < 0) { 215 netdev_warn(dev->net, "Error reading MII_DATA\n"); 216 goto done; 217 } 218 219 ret = (u16)(val & 0xFFFF); 220 221 done: 222 mutex_unlock(&dev->phy_mutex); 223 return ret; 224 } 225 226 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id, 227 int idx, int regval, int in_pm) 228 { 229 struct usbnet *dev = netdev_priv(netdev); 230 u32 val, addr; 231 int ret; 232 233 mutex_lock(&dev->phy_mutex); 234 235 /* confirm MII not busy */ 236 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 237 if (ret < 0) { 238 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); 239 goto done; 240 } 241 242 val = regval; 243 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm); 244 if (ret < 0) { 245 netdev_warn(dev->net, "Error writing MII_DATA\n"); 246 goto done; 247 } 248 249 /* set the address, index & direction (write to PHY) */ 250 phy_id &= dev->mii.phy_id_mask; 251 idx &= dev->mii.reg_num_mask; 252 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_; 253 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 254 if (ret < 0) { 255 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 256 goto done; 257 } 258 259 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 260 if (ret < 0) { 261 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 262 goto done; 263 } 264 265 done: 266 mutex_unlock(&dev->phy_mutex); 267 } 268 269 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 270 int idx) 271 { 272 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1); 273 } 274 275 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 276 int idx, int regval) 277 { 278 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1); 279 } 280 281 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 282 { 283 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0); 284 } 285 286 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 287 int regval) 288 { 289 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0); 290 } 291 292 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) 293 { 294 unsigned long start_time = jiffies; 295 u32 val; 296 int ret; 297 298 do { 299 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 300 if (ret < 0) { 301 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 302 return ret; 303 } 304 305 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) 306 break; 307 udelay(40); 308 } while (!time_after(jiffies, start_time + HZ)); 309 310 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { 311 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 312 return -EIO; 313 } 314 315 return 0; 316 } 317 318 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) 319 { 320 unsigned long start_time = jiffies; 321 u32 val; 322 int ret; 323 324 do { 325 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 326 if (ret < 0) { 327 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 328 return ret; 329 } 330 331 if (!(val & E2P_CMD_BUSY_)) 332 return 0; 333 334 udelay(40); 335 } while (!time_after(jiffies, start_time + HZ)); 336 337 netdev_warn(dev->net, "EEPROM is busy\n"); 338 return -EIO; 339 } 340 341 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 342 u8 *data) 343 { 344 u32 val; 345 int i, ret; 346 347 BUG_ON(!dev); 348 BUG_ON(!data); 349 350 ret = smsc95xx_eeprom_confirm_not_busy(dev); 351 if (ret) 352 return ret; 353 354 for (i = 0; i < length; i++) { 355 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); 356 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 357 if (ret < 0) { 358 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 359 return ret; 360 } 361 362 ret = smsc95xx_wait_eeprom(dev); 363 if (ret < 0) 364 return ret; 365 366 ret = smsc95xx_read_reg(dev, E2P_DATA, &val); 367 if (ret < 0) { 368 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 369 return ret; 370 } 371 372 data[i] = val & 0xFF; 373 offset++; 374 } 375 376 return 0; 377 } 378 379 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 380 u8 *data) 381 { 382 u32 val; 383 int i, ret; 384 385 BUG_ON(!dev); 386 BUG_ON(!data); 387 388 ret = smsc95xx_eeprom_confirm_not_busy(dev); 389 if (ret) 390 return ret; 391 392 /* Issue write/erase enable command */ 393 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; 394 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 395 if (ret < 0) { 396 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 397 return ret; 398 } 399 400 ret = smsc95xx_wait_eeprom(dev); 401 if (ret < 0) 402 return ret; 403 404 for (i = 0; i < length; i++) { 405 406 /* Fill data register */ 407 val = data[i]; 408 ret = smsc95xx_write_reg(dev, E2P_DATA, val); 409 if (ret < 0) { 410 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 411 return ret; 412 } 413 414 /* Send "write" command */ 415 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); 416 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 417 if (ret < 0) { 418 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 419 return ret; 420 } 421 422 ret = smsc95xx_wait_eeprom(dev); 423 if (ret < 0) 424 return ret; 425 426 offset++; 427 } 428 429 return 0; 430 } 431 432 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, 433 u32 data) 434 { 435 const u16 size = 4; 436 u32 buf; 437 int ret; 438 439 buf = data; 440 cpu_to_le32s(&buf); 441 442 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, 443 USB_DIR_OUT | USB_TYPE_VENDOR | 444 USB_RECIP_DEVICE, 445 0, index, &buf, size); 446 if (ret < 0) 447 netdev_warn(dev->net, "Error write async cmd, sts=%d\n", 448 ret); 449 return ret; 450 } 451 452 /* returns hash bit number for given MAC address 453 * example: 454 * 01 00 5E 00 00 01 -> returns bit number 31 */ 455 static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) 456 { 457 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; 458 } 459 460 static void smsc95xx_set_multicast(struct net_device *netdev) 461 { 462 struct usbnet *dev = netdev_priv(netdev); 463 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 464 unsigned long flags; 465 int ret; 466 467 pdata->hash_hi = 0; 468 pdata->hash_lo = 0; 469 470 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 471 472 if (dev->net->flags & IFF_PROMISC) { 473 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 474 pdata->mac_cr |= MAC_CR_PRMS_; 475 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 476 } else if (dev->net->flags & IFF_ALLMULTI) { 477 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 478 pdata->mac_cr |= MAC_CR_MCPAS_; 479 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); 480 } else if (!netdev_mc_empty(dev->net)) { 481 struct netdev_hw_addr *ha; 482 483 pdata->mac_cr |= MAC_CR_HPFILT_; 484 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); 485 486 netdev_for_each_mc_addr(ha, netdev) { 487 u32 bitnum = smsc95xx_hash(ha->addr); 488 u32 mask = 0x01 << (bitnum & 0x1F); 489 if (bitnum & 0x20) 490 pdata->hash_hi |= mask; 491 else 492 pdata->hash_lo |= mask; 493 } 494 495 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", 496 pdata->hash_hi, pdata->hash_lo); 497 } else { 498 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 499 pdata->mac_cr &= 500 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 501 } 502 503 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 504 505 /* Initiate async writes, as we can't wait for completion here */ 506 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi); 507 if (ret < 0) 508 netdev_warn(dev->net, "failed to initiate async write to HASHH\n"); 509 510 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo); 511 if (ret < 0) 512 netdev_warn(dev->net, "failed to initiate async write to HASHL\n"); 513 514 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr); 515 if (ret < 0) 516 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n"); 517 } 518 519 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, 520 u16 lcladv, u16 rmtadv) 521 { 522 u32 flow, afc_cfg = 0; 523 524 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); 525 if (ret < 0) 526 return ret; 527 528 if (duplex == DUPLEX_FULL) { 529 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 530 531 if (cap & FLOW_CTRL_RX) 532 flow = 0xFFFF0002; 533 else 534 flow = 0; 535 536 if (cap & FLOW_CTRL_TX) 537 afc_cfg |= 0xF; 538 else 539 afc_cfg &= ~0xF; 540 541 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 542 cap & FLOW_CTRL_RX ? "enabled" : "disabled", 543 cap & FLOW_CTRL_TX ? "enabled" : "disabled"); 544 } else { 545 netif_dbg(dev, link, dev->net, "half duplex\n"); 546 flow = 0; 547 afc_cfg |= 0xF; 548 } 549 550 ret = smsc95xx_write_reg(dev, FLOW, flow); 551 if (ret < 0) 552 return ret; 553 554 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); 555 } 556 557 static int smsc95xx_link_reset(struct usbnet *dev) 558 { 559 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 560 struct mii_if_info *mii = &dev->mii; 561 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 562 unsigned long flags; 563 u16 lcladv, rmtadv; 564 int ret; 565 566 /* clear interrupt status */ 567 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); 568 if (ret < 0) 569 return ret; 570 571 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 572 if (ret < 0) 573 return ret; 574 575 mii_check_media(mii, 1, 1); 576 mii_ethtool_gset(&dev->mii, &ecmd); 577 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 578 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 579 580 netif_dbg(dev, link, dev->net, 581 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 582 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 583 584 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 585 if (ecmd.duplex != DUPLEX_FULL) { 586 pdata->mac_cr &= ~MAC_CR_FDPX_; 587 pdata->mac_cr |= MAC_CR_RCVOWN_; 588 } else { 589 pdata->mac_cr &= ~MAC_CR_RCVOWN_; 590 pdata->mac_cr |= MAC_CR_FDPX_; 591 } 592 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 593 594 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 595 if (ret < 0) 596 return ret; 597 598 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 599 if (ret < 0) 600 netdev_warn(dev->net, "Error updating PHY flow control\n"); 601 602 return ret; 603 } 604 605 static void smsc95xx_status(struct usbnet *dev, struct urb *urb) 606 { 607 u32 intdata; 608 609 if (urb->actual_length != 4) { 610 netdev_warn(dev->net, "unexpected urb length %d\n", 611 urb->actual_length); 612 return; 613 } 614 615 memcpy(&intdata, urb->transfer_buffer, 4); 616 le32_to_cpus(&intdata); 617 618 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 619 620 if (intdata & INT_ENP_PHY_INT_) 621 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 622 else 623 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 624 intdata); 625 } 626 627 /* Enable or disable Tx & Rx checksum offload engines */ 628 static int smsc95xx_set_features(struct net_device *netdev, 629 netdev_features_t features) 630 { 631 struct usbnet *dev = netdev_priv(netdev); 632 u32 read_buf; 633 int ret; 634 635 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); 636 if (ret < 0) 637 return ret; 638 639 if (features & NETIF_F_HW_CSUM) 640 read_buf |= Tx_COE_EN_; 641 else 642 read_buf &= ~Tx_COE_EN_; 643 644 if (features & NETIF_F_RXCSUM) 645 read_buf |= Rx_COE_EN_; 646 else 647 read_buf &= ~Rx_COE_EN_; 648 649 ret = smsc95xx_write_reg(dev, COE_CR, read_buf); 650 if (ret < 0) 651 return ret; 652 653 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); 654 return 0; 655 } 656 657 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) 658 { 659 return MAX_EEPROM_SIZE; 660 } 661 662 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, 663 struct ethtool_eeprom *ee, u8 *data) 664 { 665 struct usbnet *dev = netdev_priv(netdev); 666 667 ee->magic = LAN95XX_EEPROM_MAGIC; 668 669 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); 670 } 671 672 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, 673 struct ethtool_eeprom *ee, u8 *data) 674 { 675 struct usbnet *dev = netdev_priv(netdev); 676 677 if (ee->magic != LAN95XX_EEPROM_MAGIC) { 678 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", 679 ee->magic); 680 return -EINVAL; 681 } 682 683 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); 684 } 685 686 static int smsc95xx_ethtool_getregslen(struct net_device *netdev) 687 { 688 /* all smsc95xx registers */ 689 return COE_CR - ID_REV + sizeof(u32); 690 } 691 692 static void 693 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, 694 void *buf) 695 { 696 struct usbnet *dev = netdev_priv(netdev); 697 unsigned int i, j; 698 int retval; 699 u32 *data = buf; 700 701 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); 702 if (retval < 0) { 703 netdev_warn(netdev, "REGS: cannot read ID_REV\n"); 704 return; 705 } 706 707 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { 708 retval = smsc95xx_read_reg(dev, i, &data[j]); 709 if (retval < 0) { 710 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); 711 return; 712 } 713 } 714 } 715 716 static void smsc95xx_ethtool_get_wol(struct net_device *net, 717 struct ethtool_wolinfo *wolinfo) 718 { 719 struct usbnet *dev = netdev_priv(net); 720 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 721 722 wolinfo->supported = SUPPORTED_WAKE; 723 wolinfo->wolopts = pdata->wolopts; 724 } 725 726 static int smsc95xx_ethtool_set_wol(struct net_device *net, 727 struct ethtool_wolinfo *wolinfo) 728 { 729 struct usbnet *dev = netdev_priv(net); 730 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 731 int ret; 732 733 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 734 735 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 736 if (ret < 0) 737 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 738 739 return ret; 740 } 741 742 static const struct ethtool_ops smsc95xx_ethtool_ops = { 743 .get_link = usbnet_get_link, 744 .nway_reset = usbnet_nway_reset, 745 .get_drvinfo = usbnet_get_drvinfo, 746 .get_msglevel = usbnet_get_msglevel, 747 .set_msglevel = usbnet_set_msglevel, 748 .get_settings = usbnet_get_settings, 749 .set_settings = usbnet_set_settings, 750 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, 751 .get_eeprom = smsc95xx_ethtool_get_eeprom, 752 .set_eeprom = smsc95xx_ethtool_set_eeprom, 753 .get_regs_len = smsc95xx_ethtool_getregslen, 754 .get_regs = smsc95xx_ethtool_getregs, 755 .get_wol = smsc95xx_ethtool_get_wol, 756 .set_wol = smsc95xx_ethtool_set_wol, 757 }; 758 759 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 760 { 761 struct usbnet *dev = netdev_priv(netdev); 762 763 if (!netif_running(netdev)) 764 return -EINVAL; 765 766 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 767 } 768 769 static void smsc95xx_init_mac_address(struct usbnet *dev) 770 { 771 const u8 *mac_addr; 772 773 /* maybe the boot loader passed the MAC address in devicetree */ 774 mac_addr = of_get_mac_address(dev->udev->dev.of_node); 775 if (mac_addr) { 776 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN); 777 return; 778 } 779 780 /* try reading mac address from EEPROM */ 781 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 782 dev->net->dev_addr) == 0) { 783 if (is_valid_ether_addr(dev->net->dev_addr)) { 784 /* eeprom values are valid so use them */ 785 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); 786 return; 787 } 788 } 789 790 /* no useful static MAC address found. generate a random one */ 791 eth_hw_addr_random(dev->net); 792 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 793 } 794 795 static int smsc95xx_set_mac_address(struct usbnet *dev) 796 { 797 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 798 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 799 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 800 int ret; 801 802 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); 803 if (ret < 0) 804 return ret; 805 806 return smsc95xx_write_reg(dev, ADDRH, addr_hi); 807 } 808 809 /* starts the TX path */ 810 static int smsc95xx_start_tx_path(struct usbnet *dev) 811 { 812 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 813 unsigned long flags; 814 int ret; 815 816 /* Enable Tx at MAC */ 817 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 818 pdata->mac_cr |= MAC_CR_TXEN_; 819 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 820 821 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 822 if (ret < 0) 823 return ret; 824 825 /* Enable Tx at SCSRs */ 826 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); 827 } 828 829 /* Starts the Receive path */ 830 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm) 831 { 832 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 833 unsigned long flags; 834 835 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 836 pdata->mac_cr |= MAC_CR_RXEN_; 837 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 838 839 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm); 840 } 841 842 static int smsc95xx_phy_initialize(struct usbnet *dev) 843 { 844 int bmcr, ret, timeout = 0; 845 846 /* Initialize MII structure */ 847 dev->mii.dev = dev->net; 848 dev->mii.mdio_read = smsc95xx_mdio_read; 849 dev->mii.mdio_write = smsc95xx_mdio_write; 850 dev->mii.phy_id_mask = 0x1f; 851 dev->mii.reg_num_mask = 0x1f; 852 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; 853 854 /* reset phy and wait for reset to complete */ 855 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 856 857 do { 858 msleep(10); 859 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 860 timeout++; 861 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 862 863 if (timeout >= 100) { 864 netdev_warn(dev->net, "timeout on PHY Reset"); 865 return -EIO; 866 } 867 868 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 869 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 870 ADVERTISE_PAUSE_ASYM); 871 872 /* read to clear */ 873 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 874 if (ret < 0) { 875 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n"); 876 return ret; 877 } 878 879 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 880 PHY_INT_MASK_DEFAULT_); 881 mii_nway_restart(&dev->mii); 882 883 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 884 return 0; 885 } 886 887 static int smsc95xx_reset(struct usbnet *dev) 888 { 889 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 890 u32 read_buf, write_buf, burst_cap; 891 int ret = 0, timeout; 892 893 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); 894 895 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_); 896 if (ret < 0) 897 return ret; 898 899 timeout = 0; 900 do { 901 msleep(10); 902 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 903 if (ret < 0) 904 return ret; 905 timeout++; 906 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); 907 908 if (timeout >= 100) { 909 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); 910 return ret; 911 } 912 913 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_); 914 if (ret < 0) 915 return ret; 916 917 timeout = 0; 918 do { 919 msleep(10); 920 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); 921 if (ret < 0) 922 return ret; 923 timeout++; 924 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); 925 926 if (timeout >= 100) { 927 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 928 return ret; 929 } 930 931 ret = smsc95xx_set_mac_address(dev); 932 if (ret < 0) 933 return ret; 934 935 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 936 dev->net->dev_addr); 937 938 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 939 if (ret < 0) 940 return ret; 941 942 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 943 read_buf); 944 945 read_buf |= HW_CFG_BIR_; 946 947 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 948 if (ret < 0) 949 return ret; 950 951 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 952 if (ret < 0) 953 return ret; 954 955 netif_dbg(dev, ifup, dev->net, 956 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", 957 read_buf); 958 959 if (!turbo_mode) { 960 burst_cap = 0; 961 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 962 } else if (dev->udev->speed == USB_SPEED_HIGH) { 963 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 964 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 965 } else { 966 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 967 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 968 } 969 970 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 971 (ulong)dev->rx_urb_size); 972 973 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); 974 if (ret < 0) 975 return ret; 976 977 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); 978 if (ret < 0) 979 return ret; 980 981 netif_dbg(dev, ifup, dev->net, 982 "Read Value from BURST_CAP after writing: 0x%08x\n", 983 read_buf); 984 985 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 986 if (ret < 0) 987 return ret; 988 989 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); 990 if (ret < 0) 991 return ret; 992 993 netif_dbg(dev, ifup, dev->net, 994 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", 995 read_buf); 996 997 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 998 if (ret < 0) 999 return ret; 1000 1001 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", 1002 read_buf); 1003 1004 if (turbo_mode) 1005 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); 1006 1007 read_buf &= ~HW_CFG_RXDOFF_; 1008 1009 /* set Rx data offset=2, Make IP header aligns on word boundary. */ 1010 read_buf |= NET_IP_ALIGN << 9; 1011 1012 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 1013 if (ret < 0) 1014 return ret; 1015 1016 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 1017 if (ret < 0) 1018 return ret; 1019 1020 netif_dbg(dev, ifup, dev->net, 1021 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); 1022 1023 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 1024 if (ret < 0) 1025 return ret; 1026 1027 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); 1028 if (ret < 0) 1029 return ret; 1030 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); 1031 1032 /* Configure GPIO pins as LED outputs */ 1033 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | 1034 LED_GPIO_CFG_FDX_LED; 1035 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); 1036 if (ret < 0) 1037 return ret; 1038 1039 /* Init Tx */ 1040 ret = smsc95xx_write_reg(dev, FLOW, 0); 1041 if (ret < 0) 1042 return ret; 1043 1044 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT); 1045 if (ret < 0) 1046 return ret; 1047 1048 /* Don't need mac_cr_lock during initialisation */ 1049 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); 1050 if (ret < 0) 1051 return ret; 1052 1053 /* Init Rx */ 1054 /* Set Vlan */ 1055 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q); 1056 if (ret < 0) 1057 return ret; 1058 1059 /* Enable or disable checksum offload engines */ 1060 ret = smsc95xx_set_features(dev->net, dev->net->features); 1061 if (ret < 0) { 1062 netdev_warn(dev->net, "Failed to set checksum offload features\n"); 1063 return ret; 1064 } 1065 1066 smsc95xx_set_multicast(dev->net); 1067 1068 ret = smsc95xx_phy_initialize(dev); 1069 if (ret < 0) { 1070 netdev_warn(dev->net, "Failed to init PHY\n"); 1071 return ret; 1072 } 1073 1074 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); 1075 if (ret < 0) 1076 return ret; 1077 1078 /* enable PHY interrupts */ 1079 read_buf |= INT_EP_CTL_PHY_INT_; 1080 1081 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); 1082 if (ret < 0) 1083 return ret; 1084 1085 ret = smsc95xx_start_tx_path(dev); 1086 if (ret < 0) { 1087 netdev_warn(dev->net, "Failed to start TX path\n"); 1088 return ret; 1089 } 1090 1091 ret = smsc95xx_start_rx_path(dev, 0); 1092 if (ret < 0) { 1093 netdev_warn(dev->net, "Failed to start RX path\n"); 1094 return ret; 1095 } 1096 1097 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); 1098 return 0; 1099 } 1100 1101 static const struct net_device_ops smsc95xx_netdev_ops = { 1102 .ndo_open = usbnet_open, 1103 .ndo_stop = usbnet_stop, 1104 .ndo_start_xmit = usbnet_start_xmit, 1105 .ndo_tx_timeout = usbnet_tx_timeout, 1106 .ndo_change_mtu = usbnet_change_mtu, 1107 .ndo_set_mac_address = eth_mac_addr, 1108 .ndo_validate_addr = eth_validate_addr, 1109 .ndo_do_ioctl = smsc95xx_ioctl, 1110 .ndo_set_rx_mode = smsc95xx_set_multicast, 1111 .ndo_set_features = smsc95xx_set_features, 1112 }; 1113 1114 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) 1115 { 1116 struct smsc95xx_priv *pdata = NULL; 1117 u32 val; 1118 int ret; 1119 1120 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1121 1122 ret = usbnet_get_endpoints(dev, intf); 1123 if (ret < 0) { 1124 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1125 return ret; 1126 } 1127 1128 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), 1129 GFP_KERNEL); 1130 1131 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1132 if (!pdata) 1133 return -ENOMEM; 1134 1135 spin_lock_init(&pdata->mac_cr_lock); 1136 1137 if (DEFAULT_TX_CSUM_ENABLE) 1138 dev->net->features |= NETIF_F_HW_CSUM; 1139 if (DEFAULT_RX_CSUM_ENABLE) 1140 dev->net->features |= NETIF_F_RXCSUM; 1141 1142 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; 1143 1144 smsc95xx_init_mac_address(dev); 1145 1146 /* Init all registers */ 1147 ret = smsc95xx_reset(dev); 1148 1149 /* detect device revision as different features may be available */ 1150 ret = smsc95xx_read_reg(dev, ID_REV, &val); 1151 if (ret < 0) 1152 return ret; 1153 val >>= 16; 1154 1155 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) || 1156 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_)) 1157 pdata->features = (FEATURE_8_WAKEUP_FILTERS | 1158 FEATURE_PHY_NLP_CROSSOVER | 1159 FEATURE_REMOTE_WAKEUP); 1160 else if (val == ID_REV_CHIP_ID_9512_) 1161 pdata->features = FEATURE_8_WAKEUP_FILTERS; 1162 1163 dev->net->netdev_ops = &smsc95xx_netdev_ops; 1164 dev->net->ethtool_ops = &smsc95xx_ethtool_ops; 1165 dev->net->flags |= IFF_MULTICAST; 1166 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; 1167 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1168 return 0; 1169 } 1170 1171 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1172 { 1173 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1174 if (pdata) { 1175 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1176 kfree(pdata); 1177 pdata = NULL; 1178 dev->data[0] = 0; 1179 } 1180 } 1181 1182 static u32 smsc_crc(const u8 *buffer, size_t len, int filter) 1183 { 1184 u32 crc = bitrev16(crc16(0xFFFF, buffer, len)); 1185 return crc << ((filter % 2) * 16); 1186 } 1187 1188 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1189 { 1190 struct mii_if_info *mii = &dev->mii; 1191 int ret; 1192 1193 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1194 1195 /* read to clear */ 1196 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1197 if (ret < 0) 1198 return ret; 1199 1200 /* enable interrupt source */ 1201 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1202 if (ret < 0) 1203 return ret; 1204 1205 ret |= mask; 1206 1207 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1208 1209 return 0; 1210 } 1211 1212 static int smsc95xx_link_ok_nopm(struct usbnet *dev) 1213 { 1214 struct mii_if_info *mii = &dev->mii; 1215 int ret; 1216 1217 /* first, a dummy read, needed to latch some MII phys */ 1218 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1219 if (ret < 0) 1220 return ret; 1221 1222 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1223 if (ret < 0) 1224 return ret; 1225 1226 return !!(ret & BMSR_LSTATUS); 1227 } 1228 1229 static int smsc95xx_enter_suspend0(struct usbnet *dev) 1230 { 1231 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1232 u32 val; 1233 int ret; 1234 1235 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1236 if (ret < 0) 1237 return ret; 1238 1239 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); 1240 val |= PM_CTL_SUS_MODE_0; 1241 1242 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1243 if (ret < 0) 1244 return ret; 1245 1246 /* clear wol status */ 1247 val &= ~PM_CTL_WUPS_; 1248 val |= PM_CTL_WUPS_WOL_; 1249 1250 /* enable energy detection */ 1251 if (pdata->wolopts & WAKE_PHY) 1252 val |= PM_CTL_WUPS_ED_; 1253 1254 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1255 if (ret < 0) 1256 return ret; 1257 1258 /* read back PM_CTRL */ 1259 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1260 if (ret < 0) 1261 return ret; 1262 1263 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1264 1265 return 0; 1266 } 1267 1268 static int smsc95xx_enter_suspend1(struct usbnet *dev) 1269 { 1270 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1271 struct mii_if_info *mii = &dev->mii; 1272 u32 val; 1273 int ret; 1274 1275 /* reconfigure link pulse detection timing for 1276 * compatibility with non-standard link partners 1277 */ 1278 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) 1279 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG, 1280 PHY_EDPD_CONFIG_DEFAULT); 1281 1282 /* enable energy detect power-down mode */ 1283 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS); 1284 if (ret < 0) 1285 return ret; 1286 1287 ret |= MODE_CTRL_STS_EDPWRDOWN_; 1288 1289 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret); 1290 1291 /* enter SUSPEND1 mode */ 1292 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1293 if (ret < 0) 1294 return ret; 1295 1296 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1297 val |= PM_CTL_SUS_MODE_1; 1298 1299 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1300 if (ret < 0) 1301 return ret; 1302 1303 /* clear wol status, enable energy detection */ 1304 val &= ~PM_CTL_WUPS_; 1305 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); 1306 1307 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1308 if (ret < 0) 1309 return ret; 1310 1311 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1312 1313 return 0; 1314 } 1315 1316 static int smsc95xx_enter_suspend2(struct usbnet *dev) 1317 { 1318 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1319 u32 val; 1320 int ret; 1321 1322 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1323 if (ret < 0) 1324 return ret; 1325 1326 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1327 val |= PM_CTL_SUS_MODE_2; 1328 1329 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1330 if (ret < 0) 1331 return ret; 1332 1333 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1334 1335 return 0; 1336 } 1337 1338 static int smsc95xx_enter_suspend3(struct usbnet *dev) 1339 { 1340 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1341 u32 val; 1342 int ret; 1343 1344 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val); 1345 if (ret < 0) 1346 return ret; 1347 1348 if (val & 0xFFFF) { 1349 netdev_info(dev->net, "rx fifo not empty in autosuspend\n"); 1350 return -EBUSY; 1351 } 1352 1353 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1354 if (ret < 0) 1355 return ret; 1356 1357 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1358 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS; 1359 1360 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1361 if (ret < 0) 1362 return ret; 1363 1364 /* clear wol status */ 1365 val &= ~PM_CTL_WUPS_; 1366 val |= PM_CTL_WUPS_WOL_; 1367 1368 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1369 if (ret < 0) 1370 return ret; 1371 1372 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1373 1374 return 0; 1375 } 1376 1377 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up) 1378 { 1379 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1380 int ret; 1381 1382 if (!netif_running(dev->net)) { 1383 /* interface is ifconfig down so fully power down hw */ 1384 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1385 return smsc95xx_enter_suspend2(dev); 1386 } 1387 1388 if (!link_up) { 1389 /* link is down so enter EDPD mode, but only if device can 1390 * reliably resume from it. This check should be redundant 1391 * as current FEATURE_REMOTE_WAKEUP parts also support 1392 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */ 1393 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) { 1394 netdev_warn(dev->net, "EDPD not supported\n"); 1395 return -EBUSY; 1396 } 1397 1398 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1399 1400 /* enable PHY wakeup events for if cable is attached */ 1401 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1402 PHY_INT_MASK_ANEG_COMP_); 1403 if (ret < 0) { 1404 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1405 return ret; 1406 } 1407 1408 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1409 return smsc95xx_enter_suspend1(dev); 1410 } 1411 1412 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1413 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1414 PHY_INT_MASK_LINK_DOWN_); 1415 if (ret < 0) { 1416 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1417 return ret; 1418 } 1419 1420 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1421 return smsc95xx_enter_suspend3(dev); 1422 } 1423 1424 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) 1425 { 1426 struct usbnet *dev = usb_get_intfdata(intf); 1427 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1428 u32 val, link_up; 1429 int ret; 1430 1431 ret = usbnet_suspend(intf, message); 1432 if (ret < 0) { 1433 netdev_warn(dev->net, "usbnet_suspend error\n"); 1434 return ret; 1435 } 1436 1437 if (pdata->suspend_flags) { 1438 netdev_warn(dev->net, "error during last resume\n"); 1439 pdata->suspend_flags = 0; 1440 } 1441 1442 /* determine if link is up using only _nopm functions */ 1443 link_up = smsc95xx_link_ok_nopm(dev); 1444 1445 if (message.event == PM_EVENT_AUTO_SUSPEND && 1446 (pdata->features & FEATURE_REMOTE_WAKEUP)) { 1447 ret = smsc95xx_autosuspend(dev, link_up); 1448 goto done; 1449 } 1450 1451 /* if we get this far we're not autosuspending */ 1452 /* if no wol options set, or if link is down and we're not waking on 1453 * PHY activity, enter lowest power SUSPEND2 mode 1454 */ 1455 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1456 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1457 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1458 1459 /* disable energy detect (link up) & wake up events */ 1460 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1461 if (ret < 0) 1462 goto done; 1463 1464 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); 1465 1466 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1467 if (ret < 0) 1468 goto done; 1469 1470 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1471 if (ret < 0) 1472 goto done; 1473 1474 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); 1475 1476 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1477 if (ret < 0) 1478 goto done; 1479 1480 ret = smsc95xx_enter_suspend2(dev); 1481 goto done; 1482 } 1483 1484 if (pdata->wolopts & WAKE_PHY) { 1485 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1486 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_)); 1487 if (ret < 0) { 1488 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1489 goto done; 1490 } 1491 1492 /* if link is down then configure EDPD and enter SUSPEND1, 1493 * otherwise enter SUSPEND0 below 1494 */ 1495 if (!link_up) { 1496 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1497 ret = smsc95xx_enter_suspend1(dev); 1498 goto done; 1499 } 1500 } 1501 1502 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1503 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL); 1504 u32 command[2]; 1505 u32 offset[2]; 1506 u32 crc[4]; 1507 int wuff_filter_count = 1508 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ? 1509 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM; 1510 int i, filter = 0; 1511 1512 if (!filter_mask) { 1513 netdev_warn(dev->net, "Unable to allocate filter_mask\n"); 1514 ret = -ENOMEM; 1515 goto done; 1516 } 1517 1518 memset(command, 0, sizeof(command)); 1519 memset(offset, 0, sizeof(offset)); 1520 memset(crc, 0, sizeof(crc)); 1521 1522 if (pdata->wolopts & WAKE_BCAST) { 1523 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1524 netdev_info(dev->net, "enabling broadcast detection\n"); 1525 filter_mask[filter * 4] = 0x003F; 1526 filter_mask[filter * 4 + 1] = 0x00; 1527 filter_mask[filter * 4 + 2] = 0x00; 1528 filter_mask[filter * 4 + 3] = 0x00; 1529 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1530 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1531 crc[filter/2] |= smsc_crc(bcast, 6, filter); 1532 filter++; 1533 } 1534 1535 if (pdata->wolopts & WAKE_MCAST) { 1536 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1537 netdev_info(dev->net, "enabling multicast detection\n"); 1538 filter_mask[filter * 4] = 0x0007; 1539 filter_mask[filter * 4 + 1] = 0x00; 1540 filter_mask[filter * 4 + 2] = 0x00; 1541 filter_mask[filter * 4 + 3] = 0x00; 1542 command[filter/4] |= 0x09UL << ((filter % 4) * 8); 1543 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1544 crc[filter/2] |= smsc_crc(mcast, 3, filter); 1545 filter++; 1546 } 1547 1548 if (pdata->wolopts & WAKE_ARP) { 1549 const u8 arp[] = {0x08, 0x06}; 1550 netdev_info(dev->net, "enabling ARP detection\n"); 1551 filter_mask[filter * 4] = 0x0003; 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] |= 0x05UL << ((filter % 4) * 8); 1556 offset[filter/4] |= 0x0C << ((filter % 4) * 8); 1557 crc[filter/2] |= smsc_crc(arp, 2, filter); 1558 filter++; 1559 } 1560 1561 if (pdata->wolopts & WAKE_UCAST) { 1562 netdev_info(dev->net, "enabling unicast detection\n"); 1563 filter_mask[filter * 4] = 0x003F; 1564 filter_mask[filter * 4 + 1] = 0x00; 1565 filter_mask[filter * 4 + 2] = 0x00; 1566 filter_mask[filter * 4 + 3] = 0x00; 1567 command[filter/4] |= 0x01UL << ((filter % 4) * 8); 1568 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1569 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter); 1570 filter++; 1571 } 1572 1573 for (i = 0; i < (wuff_filter_count * 4); i++) { 1574 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]); 1575 if (ret < 0) { 1576 kfree(filter_mask); 1577 goto done; 1578 } 1579 } 1580 kfree(filter_mask); 1581 1582 for (i = 0; i < (wuff_filter_count / 4); i++) { 1583 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]); 1584 if (ret < 0) 1585 goto done; 1586 } 1587 1588 for (i = 0; i < (wuff_filter_count / 4); i++) { 1589 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]); 1590 if (ret < 0) 1591 goto done; 1592 } 1593 1594 for (i = 0; i < (wuff_filter_count / 2); i++) { 1595 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]); 1596 if (ret < 0) 1597 goto done; 1598 } 1599 1600 /* clear any pending pattern match packet status */ 1601 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1602 if (ret < 0) 1603 goto done; 1604 1605 val |= WUCSR_WUFR_; 1606 1607 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1608 if (ret < 0) 1609 goto done; 1610 } 1611 1612 if (pdata->wolopts & WAKE_MAGIC) { 1613 /* clear any pending magic packet status */ 1614 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1615 if (ret < 0) 1616 goto done; 1617 1618 val |= WUCSR_MPR_; 1619 1620 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1621 if (ret < 0) 1622 goto done; 1623 } 1624 1625 /* enable/disable wakeup sources */ 1626 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1627 if (ret < 0) 1628 goto done; 1629 1630 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1631 netdev_info(dev->net, "enabling pattern match wakeup\n"); 1632 val |= WUCSR_WAKE_EN_; 1633 } else { 1634 netdev_info(dev->net, "disabling pattern match wakeup\n"); 1635 val &= ~WUCSR_WAKE_EN_; 1636 } 1637 1638 if (pdata->wolopts & WAKE_MAGIC) { 1639 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1640 val |= WUCSR_MPEN_; 1641 } else { 1642 netdev_info(dev->net, "disabling magic packet wakeup\n"); 1643 val &= ~WUCSR_MPEN_; 1644 } 1645 1646 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1647 if (ret < 0) 1648 goto done; 1649 1650 /* enable wol wakeup source */ 1651 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1652 if (ret < 0) 1653 goto done; 1654 1655 val |= PM_CTL_WOL_EN_; 1656 1657 /* phy energy detect wakeup source */ 1658 if (pdata->wolopts & WAKE_PHY) 1659 val |= PM_CTL_ED_EN_; 1660 1661 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1662 if (ret < 0) 1663 goto done; 1664 1665 /* enable receiver to enable frame reception */ 1666 smsc95xx_start_rx_path(dev, 1); 1667 1668 /* some wol options are enabled, so enter SUSPEND0 */ 1669 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 1670 ret = smsc95xx_enter_suspend0(dev); 1671 1672 done: 1673 /* 1674 * TODO: resume() might need to handle the suspend failure 1675 * in system sleep 1676 */ 1677 if (ret && PMSG_IS_AUTO(message)) 1678 usbnet_resume(intf); 1679 return ret; 1680 } 1681 1682 static int smsc95xx_resume(struct usb_interface *intf) 1683 { 1684 struct usbnet *dev = usb_get_intfdata(intf); 1685 struct smsc95xx_priv *pdata; 1686 u8 suspend_flags; 1687 int ret; 1688 u32 val; 1689 1690 BUG_ON(!dev); 1691 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1692 suspend_flags = pdata->suspend_flags; 1693 1694 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 1695 1696 /* do this first to ensure it's cleared even in error case */ 1697 pdata->suspend_flags = 0; 1698 1699 if (suspend_flags & SUSPEND_ALLMODES) { 1700 /* clear wake-up sources */ 1701 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1702 if (ret < 0) 1703 return ret; 1704 1705 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); 1706 1707 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1708 if (ret < 0) 1709 return ret; 1710 1711 /* clear wake-up status */ 1712 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1713 if (ret < 0) 1714 return ret; 1715 1716 val &= ~PM_CTL_WOL_EN_; 1717 val |= PM_CTL_WUPS_; 1718 1719 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1720 if (ret < 0) 1721 return ret; 1722 } 1723 1724 ret = usbnet_resume(intf); 1725 if (ret < 0) 1726 netdev_warn(dev->net, "usbnet_resume error\n"); 1727 1728 return ret; 1729 } 1730 1731 static int smsc95xx_reset_resume(struct usb_interface *intf) 1732 { 1733 struct usbnet *dev = usb_get_intfdata(intf); 1734 int ret; 1735 1736 ret = smsc95xx_reset(dev); 1737 if (ret < 0) 1738 return ret; 1739 1740 return smsc95xx_resume(intf); 1741 } 1742 1743 static void smsc95xx_rx_csum_offload(struct sk_buff *skb) 1744 { 1745 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); 1746 skb->ip_summed = CHECKSUM_COMPLETE; 1747 skb_trim(skb, skb->len - 2); 1748 } 1749 1750 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 1751 { 1752 /* This check is no longer done by usbnet */ 1753 if (skb->len < dev->net->hard_header_len) 1754 return 0; 1755 1756 while (skb->len > 0) { 1757 u32 header, align_count; 1758 struct sk_buff *ax_skb; 1759 unsigned char *packet; 1760 u16 size; 1761 1762 memcpy(&header, skb->data, sizeof(header)); 1763 le32_to_cpus(&header); 1764 skb_pull(skb, 4 + NET_IP_ALIGN); 1765 packet = skb->data; 1766 1767 /* get the packet length */ 1768 size = (u16)((header & RX_STS_FL_) >> 16); 1769 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; 1770 1771 if (unlikely(header & RX_STS_ES_)) { 1772 netif_dbg(dev, rx_err, dev->net, 1773 "Error header=0x%08x\n", header); 1774 dev->net->stats.rx_errors++; 1775 dev->net->stats.rx_dropped++; 1776 1777 if (header & RX_STS_CRC_) { 1778 dev->net->stats.rx_crc_errors++; 1779 } else { 1780 if (header & (RX_STS_TL_ | RX_STS_RF_)) 1781 dev->net->stats.rx_frame_errors++; 1782 1783 if ((header & RX_STS_LE_) && 1784 (!(header & RX_STS_FT_))) 1785 dev->net->stats.rx_length_errors++; 1786 } 1787 } else { 1788 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ 1789 if (unlikely(size > (ETH_FRAME_LEN + 12))) { 1790 netif_dbg(dev, rx_err, dev->net, 1791 "size err header=0x%08x\n", header); 1792 return 0; 1793 } 1794 1795 /* last frame in this batch */ 1796 if (skb->len == size) { 1797 if (dev->net->features & NETIF_F_RXCSUM) 1798 smsc95xx_rx_csum_offload(skb); 1799 skb_trim(skb, skb->len - 4); /* remove fcs */ 1800 skb->truesize = size + sizeof(struct sk_buff); 1801 1802 return 1; 1803 } 1804 1805 ax_skb = skb_clone(skb, GFP_ATOMIC); 1806 if (unlikely(!ax_skb)) { 1807 netdev_warn(dev->net, "Error allocating skb\n"); 1808 return 0; 1809 } 1810 1811 ax_skb->len = size; 1812 ax_skb->data = packet; 1813 skb_set_tail_pointer(ax_skb, size); 1814 1815 if (dev->net->features & NETIF_F_RXCSUM) 1816 smsc95xx_rx_csum_offload(ax_skb); 1817 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 1818 ax_skb->truesize = size + sizeof(struct sk_buff); 1819 1820 usbnet_skb_return(dev, ax_skb); 1821 } 1822 1823 skb_pull(skb, size); 1824 1825 /* padding bytes before the next frame starts */ 1826 if (skb->len) 1827 skb_pull(skb, align_count); 1828 } 1829 1830 return 1; 1831 } 1832 1833 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) 1834 { 1835 u16 low_16 = (u16)skb_checksum_start_offset(skb); 1836 u16 high_16 = low_16 + skb->csum_offset; 1837 return (high_16 << 16) | low_16; 1838 } 1839 1840 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, 1841 struct sk_buff *skb, gfp_t flags) 1842 { 1843 bool csum = skb->ip_summed == CHECKSUM_PARTIAL; 1844 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; 1845 u32 tx_cmd_a, tx_cmd_b; 1846 1847 /* We do not advertise SG, so skbs should be already linearized */ 1848 BUG_ON(skb_shinfo(skb)->nr_frags); 1849 1850 if (skb_headroom(skb) < overhead) { 1851 struct sk_buff *skb2 = skb_copy_expand(skb, 1852 overhead, 0, flags); 1853 dev_kfree_skb_any(skb); 1854 skb = skb2; 1855 if (!skb) 1856 return NULL; 1857 } 1858 1859 if (csum) { 1860 if (skb->len <= 45) { 1861 /* workaround - hardware tx checksum does not work 1862 * properly with extremely small packets */ 1863 long csstart = skb_checksum_start_offset(skb); 1864 __wsum calc = csum_partial(skb->data + csstart, 1865 skb->len - csstart, 0); 1866 *((__sum16 *)(skb->data + csstart 1867 + skb->csum_offset)) = csum_fold(calc); 1868 1869 csum = false; 1870 } else { 1871 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); 1872 skb_push(skb, 4); 1873 cpu_to_le32s(&csum_preamble); 1874 memcpy(skb->data, &csum_preamble, 4); 1875 } 1876 } 1877 1878 skb_push(skb, 4); 1879 tx_cmd_b = (u32)(skb->len - 4); 1880 if (csum) 1881 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; 1882 cpu_to_le32s(&tx_cmd_b); 1883 memcpy(skb->data, &tx_cmd_b, 4); 1884 1885 skb_push(skb, 4); 1886 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | 1887 TX_CMD_A_LAST_SEG_; 1888 cpu_to_le32s(&tx_cmd_a); 1889 memcpy(skb->data, &tx_cmd_a, 4); 1890 1891 return skb; 1892 } 1893 1894 static int smsc95xx_manage_power(struct usbnet *dev, int on) 1895 { 1896 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1897 1898 dev->intf->needs_remote_wakeup = on; 1899 1900 if (pdata->features & FEATURE_REMOTE_WAKEUP) 1901 return 0; 1902 1903 /* this chip revision isn't capable of remote wakeup */ 1904 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n"); 1905 1906 if (on) 1907 usb_autopm_get_interface_no_resume(dev->intf); 1908 else 1909 usb_autopm_put_interface(dev->intf); 1910 1911 return 0; 1912 } 1913 1914 static const struct driver_info smsc95xx_info = { 1915 .description = "smsc95xx USB 2.0 Ethernet", 1916 .bind = smsc95xx_bind, 1917 .unbind = smsc95xx_unbind, 1918 .link_reset = smsc95xx_link_reset, 1919 .reset = smsc95xx_reset, 1920 .rx_fixup = smsc95xx_rx_fixup, 1921 .tx_fixup = smsc95xx_tx_fixup, 1922 .status = smsc95xx_status, 1923 .manage_power = smsc95xx_manage_power, 1924 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 1925 }; 1926 1927 static const struct usb_device_id products[] = { 1928 { 1929 /* SMSC9500 USB Ethernet Device */ 1930 USB_DEVICE(0x0424, 0x9500), 1931 .driver_info = (unsigned long) &smsc95xx_info, 1932 }, 1933 { 1934 /* SMSC9505 USB Ethernet Device */ 1935 USB_DEVICE(0x0424, 0x9505), 1936 .driver_info = (unsigned long) &smsc95xx_info, 1937 }, 1938 { 1939 /* SMSC9500A USB Ethernet Device */ 1940 USB_DEVICE(0x0424, 0x9E00), 1941 .driver_info = (unsigned long) &smsc95xx_info, 1942 }, 1943 { 1944 /* SMSC9505A USB Ethernet Device */ 1945 USB_DEVICE(0x0424, 0x9E01), 1946 .driver_info = (unsigned long) &smsc95xx_info, 1947 }, 1948 { 1949 /* SMSC9512/9514 USB Hub & Ethernet Device */ 1950 USB_DEVICE(0x0424, 0xec00), 1951 .driver_info = (unsigned long) &smsc95xx_info, 1952 }, 1953 { 1954 /* SMSC9500 USB Ethernet Device (SAL10) */ 1955 USB_DEVICE(0x0424, 0x9900), 1956 .driver_info = (unsigned long) &smsc95xx_info, 1957 }, 1958 { 1959 /* SMSC9505 USB Ethernet Device (SAL10) */ 1960 USB_DEVICE(0x0424, 0x9901), 1961 .driver_info = (unsigned long) &smsc95xx_info, 1962 }, 1963 { 1964 /* SMSC9500A USB Ethernet Device (SAL10) */ 1965 USB_DEVICE(0x0424, 0x9902), 1966 .driver_info = (unsigned long) &smsc95xx_info, 1967 }, 1968 { 1969 /* SMSC9505A USB Ethernet Device (SAL10) */ 1970 USB_DEVICE(0x0424, 0x9903), 1971 .driver_info = (unsigned long) &smsc95xx_info, 1972 }, 1973 { 1974 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ 1975 USB_DEVICE(0x0424, 0x9904), 1976 .driver_info = (unsigned long) &smsc95xx_info, 1977 }, 1978 { 1979 /* SMSC9500A USB Ethernet Device (HAL) */ 1980 USB_DEVICE(0x0424, 0x9905), 1981 .driver_info = (unsigned long) &smsc95xx_info, 1982 }, 1983 { 1984 /* SMSC9505A USB Ethernet Device (HAL) */ 1985 USB_DEVICE(0x0424, 0x9906), 1986 .driver_info = (unsigned long) &smsc95xx_info, 1987 }, 1988 { 1989 /* SMSC9500 USB Ethernet Device (Alternate ID) */ 1990 USB_DEVICE(0x0424, 0x9907), 1991 .driver_info = (unsigned long) &smsc95xx_info, 1992 }, 1993 { 1994 /* SMSC9500A USB Ethernet Device (Alternate ID) */ 1995 USB_DEVICE(0x0424, 0x9908), 1996 .driver_info = (unsigned long) &smsc95xx_info, 1997 }, 1998 { 1999 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ 2000 USB_DEVICE(0x0424, 0x9909), 2001 .driver_info = (unsigned long) &smsc95xx_info, 2002 }, 2003 { 2004 /* SMSC LAN9530 USB Ethernet Device */ 2005 USB_DEVICE(0x0424, 0x9530), 2006 .driver_info = (unsigned long) &smsc95xx_info, 2007 }, 2008 { 2009 /* SMSC LAN9730 USB Ethernet Device */ 2010 USB_DEVICE(0x0424, 0x9730), 2011 .driver_info = (unsigned long) &smsc95xx_info, 2012 }, 2013 { 2014 /* SMSC LAN89530 USB Ethernet Device */ 2015 USB_DEVICE(0x0424, 0x9E08), 2016 .driver_info = (unsigned long) &smsc95xx_info, 2017 }, 2018 { }, /* END */ 2019 }; 2020 MODULE_DEVICE_TABLE(usb, products); 2021 2022 static struct usb_driver smsc95xx_driver = { 2023 .name = "smsc95xx", 2024 .id_table = products, 2025 .probe = usbnet_probe, 2026 .suspend = smsc95xx_suspend, 2027 .resume = smsc95xx_resume, 2028 .reset_resume = smsc95xx_reset_resume, 2029 .disconnect = usbnet_disconnect, 2030 .disable_hub_initiated_lpm = 1, 2031 .supports_autosuspend = 1, 2032 }; 2033 2034 module_usb_driver(smsc95xx_driver); 2035 2036 MODULE_AUTHOR("Nancy Lin"); 2037 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2038 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); 2039 MODULE_LICENSE("GPL"); 2040