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 99 le32_to_cpus(&buf); 100 *data = buf; 101 102 return ret; 103 } 104 105 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index, 106 u32 data, int in_pm) 107 { 108 u32 buf; 109 int ret; 110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 111 112 BUG_ON(!dev); 113 114 if (!in_pm) 115 fn = usbnet_write_cmd; 116 else 117 fn = usbnet_write_cmd_nopm; 118 119 buf = data; 120 cpu_to_le32s(&buf); 121 122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 124 0, index, &buf, 4); 125 if (unlikely(ret < 0)) 126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 127 index, ret); 128 129 return ret; 130 } 131 132 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index, 133 u32 *data) 134 { 135 return __smsc95xx_read_reg(dev, index, data, 1); 136 } 137 138 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index, 139 u32 data) 140 { 141 return __smsc95xx_write_reg(dev, index, data, 1); 142 } 143 144 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, 145 u32 *data) 146 { 147 return __smsc95xx_read_reg(dev, index, data, 0); 148 } 149 150 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, 151 u32 data) 152 { 153 return __smsc95xx_write_reg(dev, index, data, 0); 154 } 155 156 /* Loop until the read is completed with timeout 157 * called with phy_mutex held */ 158 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev, 159 int in_pm) 160 { 161 unsigned long start_time = jiffies; 162 u32 val; 163 int ret; 164 165 do { 166 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm); 167 if (ret < 0) { 168 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 169 return ret; 170 } 171 172 if (!(val & MII_BUSY_)) 173 return 0; 174 } while (!time_after(jiffies, start_time + HZ)); 175 176 return -EIO; 177 } 178 179 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 180 int in_pm) 181 { 182 struct usbnet *dev = netdev_priv(netdev); 183 u32 val, addr; 184 int ret; 185 186 mutex_lock(&dev->phy_mutex); 187 188 /* confirm MII not busy */ 189 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 190 if (ret < 0) { 191 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n"); 192 goto done; 193 } 194 195 /* set the address, index & direction (read from PHY) */ 196 phy_id &= dev->mii.phy_id_mask; 197 idx &= dev->mii.reg_num_mask; 198 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_; 199 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 200 if (ret < 0) { 201 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 202 goto done; 203 } 204 205 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 206 if (ret < 0) { 207 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 208 goto done; 209 } 210 211 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm); 212 if (ret < 0) { 213 netdev_warn(dev->net, "Error reading MII_DATA\n"); 214 goto done; 215 } 216 217 ret = (u16)(val & 0xFFFF); 218 219 done: 220 mutex_unlock(&dev->phy_mutex); 221 return ret; 222 } 223 224 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id, 225 int idx, int regval, int in_pm) 226 { 227 struct usbnet *dev = netdev_priv(netdev); 228 u32 val, addr; 229 int ret; 230 231 mutex_lock(&dev->phy_mutex); 232 233 /* confirm MII not busy */ 234 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 235 if (ret < 0) { 236 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n"); 237 goto done; 238 } 239 240 val = regval; 241 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm); 242 if (ret < 0) { 243 netdev_warn(dev->net, "Error writing MII_DATA\n"); 244 goto done; 245 } 246 247 /* set the address, index & direction (write to PHY) */ 248 phy_id &= dev->mii.phy_id_mask; 249 idx &= dev->mii.reg_num_mask; 250 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_; 251 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); 252 if (ret < 0) { 253 netdev_warn(dev->net, "Error writing MII_ADDR\n"); 254 goto done; 255 } 256 257 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); 258 if (ret < 0) { 259 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 260 goto done; 261 } 262 263 done: 264 mutex_unlock(&dev->phy_mutex); 265 } 266 267 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 268 int idx) 269 { 270 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1); 271 } 272 273 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 274 int idx, int regval) 275 { 276 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1); 277 } 278 279 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 280 { 281 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0); 282 } 283 284 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 285 int regval) 286 { 287 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0); 288 } 289 290 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) 291 { 292 unsigned long start_time = jiffies; 293 u32 val; 294 int ret; 295 296 do { 297 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 298 if (ret < 0) { 299 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 300 return ret; 301 } 302 303 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) 304 break; 305 udelay(40); 306 } while (!time_after(jiffies, start_time + HZ)); 307 308 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { 309 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 310 return -EIO; 311 } 312 313 return 0; 314 } 315 316 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) 317 { 318 unsigned long start_time = jiffies; 319 u32 val; 320 int ret; 321 322 do { 323 ret = smsc95xx_read_reg(dev, E2P_CMD, &val); 324 if (ret < 0) { 325 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 326 return ret; 327 } 328 329 if (!(val & E2P_CMD_BUSY_)) 330 return 0; 331 332 udelay(40); 333 } while (!time_after(jiffies, start_time + HZ)); 334 335 netdev_warn(dev->net, "EEPROM is busy\n"); 336 return -EIO; 337 } 338 339 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 340 u8 *data) 341 { 342 u32 val; 343 int i, ret; 344 345 BUG_ON(!dev); 346 BUG_ON(!data); 347 348 ret = smsc95xx_eeprom_confirm_not_busy(dev); 349 if (ret) 350 return ret; 351 352 for (i = 0; i < length; i++) { 353 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); 354 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 355 if (ret < 0) { 356 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 357 return ret; 358 } 359 360 ret = smsc95xx_wait_eeprom(dev); 361 if (ret < 0) 362 return ret; 363 364 ret = smsc95xx_read_reg(dev, E2P_DATA, &val); 365 if (ret < 0) { 366 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 367 return ret; 368 } 369 370 data[i] = val & 0xFF; 371 offset++; 372 } 373 374 return 0; 375 } 376 377 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 378 u8 *data) 379 { 380 u32 val; 381 int i, ret; 382 383 BUG_ON(!dev); 384 BUG_ON(!data); 385 386 ret = smsc95xx_eeprom_confirm_not_busy(dev); 387 if (ret) 388 return ret; 389 390 /* Issue write/erase enable command */ 391 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; 392 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 393 if (ret < 0) { 394 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 395 return ret; 396 } 397 398 ret = smsc95xx_wait_eeprom(dev); 399 if (ret < 0) 400 return ret; 401 402 for (i = 0; i < length; i++) { 403 404 /* Fill data register */ 405 val = data[i]; 406 ret = smsc95xx_write_reg(dev, E2P_DATA, val); 407 if (ret < 0) { 408 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 409 return ret; 410 } 411 412 /* Send "write" command */ 413 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); 414 ret = smsc95xx_write_reg(dev, E2P_CMD, val); 415 if (ret < 0) { 416 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 417 return ret; 418 } 419 420 ret = smsc95xx_wait_eeprom(dev); 421 if (ret < 0) 422 return ret; 423 424 offset++; 425 } 426 427 return 0; 428 } 429 430 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, 431 u32 data) 432 { 433 const u16 size = 4; 434 u32 buf; 435 int ret; 436 437 buf = data; 438 cpu_to_le32s(&buf); 439 440 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, 441 USB_DIR_OUT | USB_TYPE_VENDOR | 442 USB_RECIP_DEVICE, 443 0, index, &buf, size); 444 if (ret < 0) 445 netdev_warn(dev->net, "Error write async cmd, sts=%d\n", 446 ret); 447 return ret; 448 } 449 450 /* returns hash bit number for given MAC address 451 * example: 452 * 01 00 5E 00 00 01 -> returns bit number 31 */ 453 static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) 454 { 455 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; 456 } 457 458 static void smsc95xx_set_multicast(struct net_device *netdev) 459 { 460 struct usbnet *dev = netdev_priv(netdev); 461 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 462 unsigned long flags; 463 int ret; 464 465 pdata->hash_hi = 0; 466 pdata->hash_lo = 0; 467 468 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 469 470 if (dev->net->flags & IFF_PROMISC) { 471 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 472 pdata->mac_cr |= MAC_CR_PRMS_; 473 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 474 } else if (dev->net->flags & IFF_ALLMULTI) { 475 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 476 pdata->mac_cr |= MAC_CR_MCPAS_; 477 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); 478 } else if (!netdev_mc_empty(dev->net)) { 479 struct netdev_hw_addr *ha; 480 481 pdata->mac_cr |= MAC_CR_HPFILT_; 482 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); 483 484 netdev_for_each_mc_addr(ha, netdev) { 485 u32 bitnum = smsc95xx_hash(ha->addr); 486 u32 mask = 0x01 << (bitnum & 0x1F); 487 if (bitnum & 0x20) 488 pdata->hash_hi |= mask; 489 else 490 pdata->hash_lo |= mask; 491 } 492 493 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", 494 pdata->hash_hi, pdata->hash_lo); 495 } else { 496 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 497 pdata->mac_cr &= 498 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); 499 } 500 501 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 502 503 /* Initiate async writes, as we can't wait for completion here */ 504 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi); 505 if (ret < 0) 506 netdev_warn(dev->net, "failed to initiate async write to HASHH\n"); 507 508 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo); 509 if (ret < 0) 510 netdev_warn(dev->net, "failed to initiate async write to HASHL\n"); 511 512 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr); 513 if (ret < 0) 514 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n"); 515 } 516 517 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex, 518 u16 lcladv, u16 rmtadv) 519 { 520 u32 flow, afc_cfg = 0; 521 522 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); 523 if (ret < 0) 524 return ret; 525 526 if (duplex == DUPLEX_FULL) { 527 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 528 529 if (cap & FLOW_CTRL_RX) 530 flow = 0xFFFF0002; 531 else 532 flow = 0; 533 534 if (cap & FLOW_CTRL_TX) 535 afc_cfg |= 0xF; 536 else 537 afc_cfg &= ~0xF; 538 539 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 540 cap & FLOW_CTRL_RX ? "enabled" : "disabled", 541 cap & FLOW_CTRL_TX ? "enabled" : "disabled"); 542 } else { 543 netif_dbg(dev, link, dev->net, "half duplex\n"); 544 flow = 0; 545 afc_cfg |= 0xF; 546 } 547 548 ret = smsc95xx_write_reg(dev, FLOW, flow); 549 if (ret < 0) 550 return ret; 551 552 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); 553 } 554 555 static int smsc95xx_link_reset(struct usbnet *dev) 556 { 557 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 558 struct mii_if_info *mii = &dev->mii; 559 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 560 unsigned long flags; 561 u16 lcladv, rmtadv; 562 int ret; 563 564 /* clear interrupt status */ 565 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); 566 if (ret < 0) 567 return ret; 568 569 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 570 if (ret < 0) 571 return ret; 572 573 mii_check_media(mii, 1, 1); 574 mii_ethtool_gset(&dev->mii, &ecmd); 575 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 576 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 577 578 netif_dbg(dev, link, dev->net, 579 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 580 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 581 582 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 583 if (ecmd.duplex != DUPLEX_FULL) { 584 pdata->mac_cr &= ~MAC_CR_FDPX_; 585 pdata->mac_cr |= MAC_CR_RCVOWN_; 586 } else { 587 pdata->mac_cr &= ~MAC_CR_RCVOWN_; 588 pdata->mac_cr |= MAC_CR_FDPX_; 589 } 590 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 591 592 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 593 if (ret < 0) 594 return ret; 595 596 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 597 if (ret < 0) 598 netdev_warn(dev->net, "Error updating PHY flow control\n"); 599 600 return ret; 601 } 602 603 static void smsc95xx_status(struct usbnet *dev, struct urb *urb) 604 { 605 u32 intdata; 606 607 if (urb->actual_length != 4) { 608 netdev_warn(dev->net, "unexpected urb length %d\n", 609 urb->actual_length); 610 return; 611 } 612 613 memcpy(&intdata, urb->transfer_buffer, 4); 614 le32_to_cpus(&intdata); 615 616 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 617 618 if (intdata & INT_ENP_PHY_INT_) 619 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 620 else 621 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 622 intdata); 623 } 624 625 /* Enable or disable Tx & Rx checksum offload engines */ 626 static int smsc95xx_set_features(struct net_device *netdev, 627 netdev_features_t features) 628 { 629 struct usbnet *dev = netdev_priv(netdev); 630 u32 read_buf; 631 int ret; 632 633 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); 634 if (ret < 0) 635 return ret; 636 637 if (features & NETIF_F_HW_CSUM) 638 read_buf |= Tx_COE_EN_; 639 else 640 read_buf &= ~Tx_COE_EN_; 641 642 if (features & NETIF_F_RXCSUM) 643 read_buf |= Rx_COE_EN_; 644 else 645 read_buf &= ~Rx_COE_EN_; 646 647 ret = smsc95xx_write_reg(dev, COE_CR, read_buf); 648 if (ret < 0) 649 return ret; 650 651 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); 652 return 0; 653 } 654 655 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) 656 { 657 return MAX_EEPROM_SIZE; 658 } 659 660 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, 661 struct ethtool_eeprom *ee, u8 *data) 662 { 663 struct usbnet *dev = netdev_priv(netdev); 664 665 ee->magic = LAN95XX_EEPROM_MAGIC; 666 667 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); 668 } 669 670 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, 671 struct ethtool_eeprom *ee, u8 *data) 672 { 673 struct usbnet *dev = netdev_priv(netdev); 674 675 if (ee->magic != LAN95XX_EEPROM_MAGIC) { 676 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", 677 ee->magic); 678 return -EINVAL; 679 } 680 681 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); 682 } 683 684 static int smsc95xx_ethtool_getregslen(struct net_device *netdev) 685 { 686 /* all smsc95xx registers */ 687 return COE_CR - ID_REV + sizeof(u32); 688 } 689 690 static void 691 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, 692 void *buf) 693 { 694 struct usbnet *dev = netdev_priv(netdev); 695 unsigned int i, j; 696 int retval; 697 u32 *data = buf; 698 699 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); 700 if (retval < 0) { 701 netdev_warn(netdev, "REGS: cannot read ID_REV\n"); 702 return; 703 } 704 705 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { 706 retval = smsc95xx_read_reg(dev, i, &data[j]); 707 if (retval < 0) { 708 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); 709 return; 710 } 711 } 712 } 713 714 static void smsc95xx_ethtool_get_wol(struct net_device *net, 715 struct ethtool_wolinfo *wolinfo) 716 { 717 struct usbnet *dev = netdev_priv(net); 718 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 719 720 wolinfo->supported = SUPPORTED_WAKE; 721 wolinfo->wolopts = pdata->wolopts; 722 } 723 724 static int smsc95xx_ethtool_set_wol(struct net_device *net, 725 struct ethtool_wolinfo *wolinfo) 726 { 727 struct usbnet *dev = netdev_priv(net); 728 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 729 int ret; 730 731 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 732 733 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 734 if (ret < 0) 735 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 736 737 return ret; 738 } 739 740 static const struct ethtool_ops smsc95xx_ethtool_ops = { 741 .get_link = usbnet_get_link, 742 .nway_reset = usbnet_nway_reset, 743 .get_drvinfo = usbnet_get_drvinfo, 744 .get_msglevel = usbnet_get_msglevel, 745 .set_msglevel = usbnet_set_msglevel, 746 .get_settings = usbnet_get_settings, 747 .set_settings = usbnet_set_settings, 748 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, 749 .get_eeprom = smsc95xx_ethtool_get_eeprom, 750 .set_eeprom = smsc95xx_ethtool_set_eeprom, 751 .get_regs_len = smsc95xx_ethtool_getregslen, 752 .get_regs = smsc95xx_ethtool_getregs, 753 .get_wol = smsc95xx_ethtool_get_wol, 754 .set_wol = smsc95xx_ethtool_set_wol, 755 }; 756 757 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 758 { 759 struct usbnet *dev = netdev_priv(netdev); 760 761 if (!netif_running(netdev)) 762 return -EINVAL; 763 764 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 765 } 766 767 static void smsc95xx_init_mac_address(struct usbnet *dev) 768 { 769 const u8 *mac_addr; 770 771 /* maybe the boot loader passed the MAC address in devicetree */ 772 mac_addr = of_get_mac_address(dev->udev->dev.of_node); 773 if (mac_addr) { 774 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN); 775 return; 776 } 777 778 /* try reading mac address from EEPROM */ 779 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 780 dev->net->dev_addr) == 0) { 781 if (is_valid_ether_addr(dev->net->dev_addr)) { 782 /* eeprom values are valid so use them */ 783 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); 784 return; 785 } 786 } 787 788 /* no useful static MAC address found. generate a random one */ 789 eth_hw_addr_random(dev->net); 790 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 791 } 792 793 static int smsc95xx_set_mac_address(struct usbnet *dev) 794 { 795 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 796 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 797 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 798 int ret; 799 800 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); 801 if (ret < 0) 802 return ret; 803 804 return smsc95xx_write_reg(dev, ADDRH, addr_hi); 805 } 806 807 /* starts the TX path */ 808 static int smsc95xx_start_tx_path(struct usbnet *dev) 809 { 810 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 811 unsigned long flags; 812 int ret; 813 814 /* Enable Tx at MAC */ 815 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 816 pdata->mac_cr |= MAC_CR_TXEN_; 817 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 818 819 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); 820 if (ret < 0) 821 return ret; 822 823 /* Enable Tx at SCSRs */ 824 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); 825 } 826 827 /* Starts the Receive path */ 828 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm) 829 { 830 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 831 unsigned long flags; 832 833 spin_lock_irqsave(&pdata->mac_cr_lock, flags); 834 pdata->mac_cr |= MAC_CR_RXEN_; 835 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); 836 837 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm); 838 } 839 840 static int smsc95xx_phy_initialize(struct usbnet *dev) 841 { 842 int bmcr, ret, timeout = 0; 843 844 /* Initialize MII structure */ 845 dev->mii.dev = dev->net; 846 dev->mii.mdio_read = smsc95xx_mdio_read; 847 dev->mii.mdio_write = smsc95xx_mdio_write; 848 dev->mii.phy_id_mask = 0x1f; 849 dev->mii.reg_num_mask = 0x1f; 850 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID; 851 852 /* reset phy and wait for reset to complete */ 853 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 854 855 do { 856 msleep(10); 857 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 858 timeout++; 859 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 860 861 if (timeout >= 100) { 862 netdev_warn(dev->net, "timeout on PHY Reset"); 863 return -EIO; 864 } 865 866 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 867 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 868 ADVERTISE_PAUSE_ASYM); 869 870 /* read to clear */ 871 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 872 if (ret < 0) { 873 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n"); 874 return ret; 875 } 876 877 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 878 PHY_INT_MASK_DEFAULT_); 879 mii_nway_restart(&dev->mii); 880 881 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 882 return 0; 883 } 884 885 static int smsc95xx_reset(struct usbnet *dev) 886 { 887 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 888 u32 read_buf, write_buf, burst_cap; 889 int ret = 0, timeout; 890 891 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); 892 893 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_); 894 if (ret < 0) 895 return ret; 896 897 timeout = 0; 898 do { 899 msleep(10); 900 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 901 if (ret < 0) 902 return ret; 903 timeout++; 904 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); 905 906 if (timeout >= 100) { 907 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); 908 return ret; 909 } 910 911 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_); 912 if (ret < 0) 913 return ret; 914 915 timeout = 0; 916 do { 917 msleep(10); 918 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); 919 if (ret < 0) 920 return ret; 921 timeout++; 922 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); 923 924 if (timeout >= 100) { 925 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 926 return ret; 927 } 928 929 ret = smsc95xx_set_mac_address(dev); 930 if (ret < 0) 931 return ret; 932 933 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 934 dev->net->dev_addr); 935 936 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 937 if (ret < 0) 938 return ret; 939 940 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 941 read_buf); 942 943 read_buf |= HW_CFG_BIR_; 944 945 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 946 if (ret < 0) 947 return ret; 948 949 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 950 if (ret < 0) 951 return ret; 952 953 netif_dbg(dev, ifup, dev->net, 954 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", 955 read_buf); 956 957 if (!turbo_mode) { 958 burst_cap = 0; 959 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 960 } else if (dev->udev->speed == USB_SPEED_HIGH) { 961 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 962 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 963 } else { 964 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 965 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 966 } 967 968 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 969 (ulong)dev->rx_urb_size); 970 971 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); 972 if (ret < 0) 973 return ret; 974 975 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); 976 if (ret < 0) 977 return ret; 978 979 netif_dbg(dev, ifup, dev->net, 980 "Read Value from BURST_CAP after writing: 0x%08x\n", 981 read_buf); 982 983 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 984 if (ret < 0) 985 return ret; 986 987 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); 988 if (ret < 0) 989 return ret; 990 991 netif_dbg(dev, ifup, dev->net, 992 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", 993 read_buf); 994 995 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 996 if (ret < 0) 997 return ret; 998 999 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", 1000 read_buf); 1001 1002 if (turbo_mode) 1003 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); 1004 1005 read_buf &= ~HW_CFG_RXDOFF_; 1006 1007 /* set Rx data offset=2, Make IP header aligns on word boundary. */ 1008 read_buf |= NET_IP_ALIGN << 9; 1009 1010 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); 1011 if (ret < 0) 1012 return ret; 1013 1014 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); 1015 if (ret < 0) 1016 return ret; 1017 1018 netif_dbg(dev, ifup, dev->net, 1019 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); 1020 1021 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 1022 if (ret < 0) 1023 return ret; 1024 1025 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); 1026 if (ret < 0) 1027 return ret; 1028 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); 1029 1030 /* Configure GPIO pins as LED outputs */ 1031 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | 1032 LED_GPIO_CFG_FDX_LED; 1033 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); 1034 if (ret < 0) 1035 return ret; 1036 1037 /* Init Tx */ 1038 ret = smsc95xx_write_reg(dev, FLOW, 0); 1039 if (ret < 0) 1040 return ret; 1041 1042 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT); 1043 if (ret < 0) 1044 return ret; 1045 1046 /* Don't need mac_cr_lock during initialisation */ 1047 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); 1048 if (ret < 0) 1049 return ret; 1050 1051 /* Init Rx */ 1052 /* Set Vlan */ 1053 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q); 1054 if (ret < 0) 1055 return ret; 1056 1057 /* Enable or disable checksum offload engines */ 1058 ret = smsc95xx_set_features(dev->net, dev->net->features); 1059 if (ret < 0) { 1060 netdev_warn(dev->net, "Failed to set checksum offload features\n"); 1061 return ret; 1062 } 1063 1064 smsc95xx_set_multicast(dev->net); 1065 1066 ret = smsc95xx_phy_initialize(dev); 1067 if (ret < 0) { 1068 netdev_warn(dev->net, "Failed to init PHY\n"); 1069 return ret; 1070 } 1071 1072 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); 1073 if (ret < 0) 1074 return ret; 1075 1076 /* enable PHY interrupts */ 1077 read_buf |= INT_EP_CTL_PHY_INT_; 1078 1079 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); 1080 if (ret < 0) 1081 return ret; 1082 1083 ret = smsc95xx_start_tx_path(dev); 1084 if (ret < 0) { 1085 netdev_warn(dev->net, "Failed to start TX path\n"); 1086 return ret; 1087 } 1088 1089 ret = smsc95xx_start_rx_path(dev, 0); 1090 if (ret < 0) { 1091 netdev_warn(dev->net, "Failed to start RX path\n"); 1092 return ret; 1093 } 1094 1095 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); 1096 return 0; 1097 } 1098 1099 static const struct net_device_ops smsc95xx_netdev_ops = { 1100 .ndo_open = usbnet_open, 1101 .ndo_stop = usbnet_stop, 1102 .ndo_start_xmit = usbnet_start_xmit, 1103 .ndo_tx_timeout = usbnet_tx_timeout, 1104 .ndo_change_mtu = usbnet_change_mtu, 1105 .ndo_set_mac_address = eth_mac_addr, 1106 .ndo_validate_addr = eth_validate_addr, 1107 .ndo_do_ioctl = smsc95xx_ioctl, 1108 .ndo_set_rx_mode = smsc95xx_set_multicast, 1109 .ndo_set_features = smsc95xx_set_features, 1110 }; 1111 1112 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) 1113 { 1114 struct smsc95xx_priv *pdata = NULL; 1115 u32 val; 1116 int ret; 1117 1118 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1119 1120 ret = usbnet_get_endpoints(dev, intf); 1121 if (ret < 0) { 1122 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1123 return ret; 1124 } 1125 1126 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv), 1127 GFP_KERNEL); 1128 1129 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1130 if (!pdata) 1131 return -ENOMEM; 1132 1133 spin_lock_init(&pdata->mac_cr_lock); 1134 1135 if (DEFAULT_TX_CSUM_ENABLE) 1136 dev->net->features |= NETIF_F_HW_CSUM; 1137 if (DEFAULT_RX_CSUM_ENABLE) 1138 dev->net->features |= NETIF_F_RXCSUM; 1139 1140 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM; 1141 1142 smsc95xx_init_mac_address(dev); 1143 1144 /* Init all registers */ 1145 ret = smsc95xx_reset(dev); 1146 1147 /* detect device revision as different features may be available */ 1148 ret = smsc95xx_read_reg(dev, ID_REV, &val); 1149 if (ret < 0) 1150 return ret; 1151 val >>= 16; 1152 1153 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) || 1154 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_)) 1155 pdata->features = (FEATURE_8_WAKEUP_FILTERS | 1156 FEATURE_PHY_NLP_CROSSOVER | 1157 FEATURE_REMOTE_WAKEUP); 1158 else if (val == ID_REV_CHIP_ID_9512_) 1159 pdata->features = FEATURE_8_WAKEUP_FILTERS; 1160 1161 dev->net->netdev_ops = &smsc95xx_netdev_ops; 1162 dev->net->ethtool_ops = &smsc95xx_ethtool_ops; 1163 dev->net->flags |= IFF_MULTICAST; 1164 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; 1165 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1166 return 0; 1167 } 1168 1169 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1170 { 1171 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1172 if (pdata) { 1173 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1174 kfree(pdata); 1175 pdata = NULL; 1176 dev->data[0] = 0; 1177 } 1178 } 1179 1180 static u32 smsc_crc(const u8 *buffer, size_t len, int filter) 1181 { 1182 u32 crc = bitrev16(crc16(0xFFFF, buffer, len)); 1183 return crc << ((filter % 2) * 16); 1184 } 1185 1186 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1187 { 1188 struct mii_if_info *mii = &dev->mii; 1189 int ret; 1190 1191 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1192 1193 /* read to clear */ 1194 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1195 if (ret < 0) 1196 return ret; 1197 1198 /* enable interrupt source */ 1199 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1200 if (ret < 0) 1201 return ret; 1202 1203 ret |= mask; 1204 1205 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1206 1207 return 0; 1208 } 1209 1210 static int smsc95xx_link_ok_nopm(struct usbnet *dev) 1211 { 1212 struct mii_if_info *mii = &dev->mii; 1213 int ret; 1214 1215 /* first, a dummy read, needed to latch some MII phys */ 1216 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1217 if (ret < 0) 1218 return ret; 1219 1220 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1221 if (ret < 0) 1222 return ret; 1223 1224 return !!(ret & BMSR_LSTATUS); 1225 } 1226 1227 static int smsc95xx_enter_suspend0(struct usbnet *dev) 1228 { 1229 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1230 u32 val; 1231 int ret; 1232 1233 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1234 if (ret < 0) 1235 return ret; 1236 1237 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); 1238 val |= PM_CTL_SUS_MODE_0; 1239 1240 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1241 if (ret < 0) 1242 return ret; 1243 1244 /* clear wol status */ 1245 val &= ~PM_CTL_WUPS_; 1246 val |= PM_CTL_WUPS_WOL_; 1247 1248 /* enable energy detection */ 1249 if (pdata->wolopts & WAKE_PHY) 1250 val |= PM_CTL_WUPS_ED_; 1251 1252 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1253 if (ret < 0) 1254 return ret; 1255 1256 /* read back PM_CTRL */ 1257 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1258 if (ret < 0) 1259 return ret; 1260 1261 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1262 1263 return 0; 1264 } 1265 1266 static int smsc95xx_enter_suspend1(struct usbnet *dev) 1267 { 1268 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1269 struct mii_if_info *mii = &dev->mii; 1270 u32 val; 1271 int ret; 1272 1273 /* reconfigure link pulse detection timing for 1274 * compatibility with non-standard link partners 1275 */ 1276 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) 1277 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG, 1278 PHY_EDPD_CONFIG_DEFAULT); 1279 1280 /* enable energy detect power-down mode */ 1281 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS); 1282 if (ret < 0) 1283 return ret; 1284 1285 ret |= MODE_CTRL_STS_EDPWRDOWN_; 1286 1287 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret); 1288 1289 /* enter SUSPEND1 mode */ 1290 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1291 if (ret < 0) 1292 return ret; 1293 1294 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1295 val |= PM_CTL_SUS_MODE_1; 1296 1297 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1298 if (ret < 0) 1299 return ret; 1300 1301 /* clear wol status, enable energy detection */ 1302 val &= ~PM_CTL_WUPS_; 1303 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); 1304 1305 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1306 if (ret < 0) 1307 return ret; 1308 1309 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1310 1311 return 0; 1312 } 1313 1314 static int smsc95xx_enter_suspend2(struct usbnet *dev) 1315 { 1316 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1317 u32 val; 1318 int ret; 1319 1320 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1321 if (ret < 0) 1322 return ret; 1323 1324 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1325 val |= PM_CTL_SUS_MODE_2; 1326 1327 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1328 if (ret < 0) 1329 return ret; 1330 1331 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1332 1333 return 0; 1334 } 1335 1336 static int smsc95xx_enter_suspend3(struct usbnet *dev) 1337 { 1338 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1339 u32 val; 1340 int ret; 1341 1342 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val); 1343 if (ret < 0) 1344 return ret; 1345 1346 if (val & 0xFFFF) { 1347 netdev_info(dev->net, "rx fifo not empty in autosuspend\n"); 1348 return -EBUSY; 1349 } 1350 1351 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1352 if (ret < 0) 1353 return ret; 1354 1355 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); 1356 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS; 1357 1358 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1359 if (ret < 0) 1360 return ret; 1361 1362 /* clear wol status */ 1363 val &= ~PM_CTL_WUPS_; 1364 val |= PM_CTL_WUPS_WOL_; 1365 1366 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1367 if (ret < 0) 1368 return ret; 1369 1370 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1371 1372 return 0; 1373 } 1374 1375 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up) 1376 { 1377 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1378 int ret; 1379 1380 if (!netif_running(dev->net)) { 1381 /* interface is ifconfig down so fully power down hw */ 1382 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1383 return smsc95xx_enter_suspend2(dev); 1384 } 1385 1386 if (!link_up) { 1387 /* link is down so enter EDPD mode, but only if device can 1388 * reliably resume from it. This check should be redundant 1389 * as current FEATURE_REMOTE_WAKEUP parts also support 1390 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */ 1391 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) { 1392 netdev_warn(dev->net, "EDPD not supported\n"); 1393 return -EBUSY; 1394 } 1395 1396 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1397 1398 /* enable PHY wakeup events for if cable is attached */ 1399 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1400 PHY_INT_MASK_ANEG_COMP_); 1401 if (ret < 0) { 1402 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1403 return ret; 1404 } 1405 1406 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1407 return smsc95xx_enter_suspend1(dev); 1408 } 1409 1410 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1411 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1412 PHY_INT_MASK_LINK_DOWN_); 1413 if (ret < 0) { 1414 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1415 return ret; 1416 } 1417 1418 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1419 return smsc95xx_enter_suspend3(dev); 1420 } 1421 1422 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) 1423 { 1424 struct usbnet *dev = usb_get_intfdata(intf); 1425 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1426 u32 val, link_up; 1427 int ret; 1428 1429 ret = usbnet_suspend(intf, message); 1430 if (ret < 0) { 1431 netdev_warn(dev->net, "usbnet_suspend error\n"); 1432 return ret; 1433 } 1434 1435 if (pdata->suspend_flags) { 1436 netdev_warn(dev->net, "error during last resume\n"); 1437 pdata->suspend_flags = 0; 1438 } 1439 1440 /* determine if link is up using only _nopm functions */ 1441 link_up = smsc95xx_link_ok_nopm(dev); 1442 1443 if (message.event == PM_EVENT_AUTO_SUSPEND && 1444 (pdata->features & FEATURE_REMOTE_WAKEUP)) { 1445 ret = smsc95xx_autosuspend(dev, link_up); 1446 goto done; 1447 } 1448 1449 /* if we get this far we're not autosuspending */ 1450 /* if no wol options set, or if link is down and we're not waking on 1451 * PHY activity, enter lowest power SUSPEND2 mode 1452 */ 1453 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1454 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1455 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1456 1457 /* disable energy detect (link up) & wake up events */ 1458 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1459 if (ret < 0) 1460 goto done; 1461 1462 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); 1463 1464 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1465 if (ret < 0) 1466 goto done; 1467 1468 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1469 if (ret < 0) 1470 goto done; 1471 1472 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); 1473 1474 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1475 if (ret < 0) 1476 goto done; 1477 1478 ret = smsc95xx_enter_suspend2(dev); 1479 goto done; 1480 } 1481 1482 if (pdata->wolopts & WAKE_PHY) { 1483 ret = smsc95xx_enable_phy_wakeup_interrupts(dev, 1484 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_)); 1485 if (ret < 0) { 1486 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1487 goto done; 1488 } 1489 1490 /* if link is down then configure EDPD and enter SUSPEND1, 1491 * otherwise enter SUSPEND0 below 1492 */ 1493 if (!link_up) { 1494 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1495 ret = smsc95xx_enter_suspend1(dev); 1496 goto done; 1497 } 1498 } 1499 1500 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1501 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL); 1502 u32 command[2]; 1503 u32 offset[2]; 1504 u32 crc[4]; 1505 int wuff_filter_count = 1506 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ? 1507 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM; 1508 int i, filter = 0; 1509 1510 if (!filter_mask) { 1511 netdev_warn(dev->net, "Unable to allocate filter_mask\n"); 1512 ret = -ENOMEM; 1513 goto done; 1514 } 1515 1516 memset(command, 0, sizeof(command)); 1517 memset(offset, 0, sizeof(offset)); 1518 memset(crc, 0, sizeof(crc)); 1519 1520 if (pdata->wolopts & WAKE_BCAST) { 1521 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1522 netdev_info(dev->net, "enabling broadcast detection\n"); 1523 filter_mask[filter * 4] = 0x003F; 1524 filter_mask[filter * 4 + 1] = 0x00; 1525 filter_mask[filter * 4 + 2] = 0x00; 1526 filter_mask[filter * 4 + 3] = 0x00; 1527 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1528 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1529 crc[filter/2] |= smsc_crc(bcast, 6, filter); 1530 filter++; 1531 } 1532 1533 if (pdata->wolopts & WAKE_MCAST) { 1534 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1535 netdev_info(dev->net, "enabling multicast detection\n"); 1536 filter_mask[filter * 4] = 0x0007; 1537 filter_mask[filter * 4 + 1] = 0x00; 1538 filter_mask[filter * 4 + 2] = 0x00; 1539 filter_mask[filter * 4 + 3] = 0x00; 1540 command[filter/4] |= 0x09UL << ((filter % 4) * 8); 1541 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1542 crc[filter/2] |= smsc_crc(mcast, 3, filter); 1543 filter++; 1544 } 1545 1546 if (pdata->wolopts & WAKE_ARP) { 1547 const u8 arp[] = {0x08, 0x06}; 1548 netdev_info(dev->net, "enabling ARP detection\n"); 1549 filter_mask[filter * 4] = 0x0003; 1550 filter_mask[filter * 4 + 1] = 0x00; 1551 filter_mask[filter * 4 + 2] = 0x00; 1552 filter_mask[filter * 4 + 3] = 0x00; 1553 command[filter/4] |= 0x05UL << ((filter % 4) * 8); 1554 offset[filter/4] |= 0x0C << ((filter % 4) * 8); 1555 crc[filter/2] |= smsc_crc(arp, 2, filter); 1556 filter++; 1557 } 1558 1559 if (pdata->wolopts & WAKE_UCAST) { 1560 netdev_info(dev->net, "enabling unicast detection\n"); 1561 filter_mask[filter * 4] = 0x003F; 1562 filter_mask[filter * 4 + 1] = 0x00; 1563 filter_mask[filter * 4 + 2] = 0x00; 1564 filter_mask[filter * 4 + 3] = 0x00; 1565 command[filter/4] |= 0x01UL << ((filter % 4) * 8); 1566 offset[filter/4] |= 0x00 << ((filter % 4) * 8); 1567 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter); 1568 filter++; 1569 } 1570 1571 for (i = 0; i < (wuff_filter_count * 4); i++) { 1572 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]); 1573 if (ret < 0) { 1574 kfree(filter_mask); 1575 goto done; 1576 } 1577 } 1578 kfree(filter_mask); 1579 1580 for (i = 0; i < (wuff_filter_count / 4); i++) { 1581 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]); 1582 if (ret < 0) 1583 goto done; 1584 } 1585 1586 for (i = 0; i < (wuff_filter_count / 4); i++) { 1587 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]); 1588 if (ret < 0) 1589 goto done; 1590 } 1591 1592 for (i = 0; i < (wuff_filter_count / 2); i++) { 1593 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]); 1594 if (ret < 0) 1595 goto done; 1596 } 1597 1598 /* clear any pending pattern match packet status */ 1599 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1600 if (ret < 0) 1601 goto done; 1602 1603 val |= WUCSR_WUFR_; 1604 1605 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1606 if (ret < 0) 1607 goto done; 1608 } 1609 1610 if (pdata->wolopts & WAKE_MAGIC) { 1611 /* clear any pending magic packet status */ 1612 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1613 if (ret < 0) 1614 goto done; 1615 1616 val |= WUCSR_MPR_; 1617 1618 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1619 if (ret < 0) 1620 goto done; 1621 } 1622 1623 /* enable/disable wakeup sources */ 1624 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1625 if (ret < 0) 1626 goto done; 1627 1628 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { 1629 netdev_info(dev->net, "enabling pattern match wakeup\n"); 1630 val |= WUCSR_WAKE_EN_; 1631 } else { 1632 netdev_info(dev->net, "disabling pattern match wakeup\n"); 1633 val &= ~WUCSR_WAKE_EN_; 1634 } 1635 1636 if (pdata->wolopts & WAKE_MAGIC) { 1637 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1638 val |= WUCSR_MPEN_; 1639 } else { 1640 netdev_info(dev->net, "disabling magic packet wakeup\n"); 1641 val &= ~WUCSR_MPEN_; 1642 } 1643 1644 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1645 if (ret < 0) 1646 goto done; 1647 1648 /* enable wol wakeup source */ 1649 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1650 if (ret < 0) 1651 goto done; 1652 1653 val |= PM_CTL_WOL_EN_; 1654 1655 /* phy energy detect wakeup source */ 1656 if (pdata->wolopts & WAKE_PHY) 1657 val |= PM_CTL_ED_EN_; 1658 1659 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1660 if (ret < 0) 1661 goto done; 1662 1663 /* enable receiver to enable frame reception */ 1664 smsc95xx_start_rx_path(dev, 1); 1665 1666 /* some wol options are enabled, so enter SUSPEND0 */ 1667 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 1668 ret = smsc95xx_enter_suspend0(dev); 1669 1670 done: 1671 /* 1672 * TODO: resume() might need to handle the suspend failure 1673 * in system sleep 1674 */ 1675 if (ret && PMSG_IS_AUTO(message)) 1676 usbnet_resume(intf); 1677 return ret; 1678 } 1679 1680 static int smsc95xx_resume(struct usb_interface *intf) 1681 { 1682 struct usbnet *dev = usb_get_intfdata(intf); 1683 struct smsc95xx_priv *pdata; 1684 u8 suspend_flags; 1685 int ret; 1686 u32 val; 1687 1688 BUG_ON(!dev); 1689 pdata = (struct smsc95xx_priv *)(dev->data[0]); 1690 suspend_flags = pdata->suspend_flags; 1691 1692 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 1693 1694 /* do this first to ensure it's cleared even in error case */ 1695 pdata->suspend_flags = 0; 1696 1697 if (suspend_flags & SUSPEND_ALLMODES) { 1698 /* clear wake-up sources */ 1699 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); 1700 if (ret < 0) 1701 return ret; 1702 1703 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); 1704 1705 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); 1706 if (ret < 0) 1707 return ret; 1708 1709 /* clear wake-up status */ 1710 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); 1711 if (ret < 0) 1712 return ret; 1713 1714 val &= ~PM_CTL_WOL_EN_; 1715 val |= PM_CTL_WUPS_; 1716 1717 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); 1718 if (ret < 0) 1719 return ret; 1720 } 1721 1722 ret = usbnet_resume(intf); 1723 if (ret < 0) 1724 netdev_warn(dev->net, "usbnet_resume error\n"); 1725 1726 return ret; 1727 } 1728 1729 static int smsc95xx_reset_resume(struct usb_interface *intf) 1730 { 1731 struct usbnet *dev = usb_get_intfdata(intf); 1732 int ret; 1733 1734 ret = smsc95xx_reset(dev); 1735 if (ret < 0) 1736 return ret; 1737 1738 return smsc95xx_resume(intf); 1739 } 1740 1741 static void smsc95xx_rx_csum_offload(struct sk_buff *skb) 1742 { 1743 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); 1744 skb->ip_summed = CHECKSUM_COMPLETE; 1745 skb_trim(skb, skb->len - 2); 1746 } 1747 1748 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 1749 { 1750 /* This check is no longer done by usbnet */ 1751 if (skb->len < dev->net->hard_header_len) 1752 return 0; 1753 1754 while (skb->len > 0) { 1755 u32 header, align_count; 1756 struct sk_buff *ax_skb; 1757 unsigned char *packet; 1758 u16 size; 1759 1760 memcpy(&header, skb->data, sizeof(header)); 1761 le32_to_cpus(&header); 1762 skb_pull(skb, 4 + NET_IP_ALIGN); 1763 packet = skb->data; 1764 1765 /* get the packet length */ 1766 size = (u16)((header & RX_STS_FL_) >> 16); 1767 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; 1768 1769 if (unlikely(header & RX_STS_ES_)) { 1770 netif_dbg(dev, rx_err, dev->net, 1771 "Error header=0x%08x\n", header); 1772 dev->net->stats.rx_errors++; 1773 dev->net->stats.rx_dropped++; 1774 1775 if (header & RX_STS_CRC_) { 1776 dev->net->stats.rx_crc_errors++; 1777 } else { 1778 if (header & (RX_STS_TL_ | RX_STS_RF_)) 1779 dev->net->stats.rx_frame_errors++; 1780 1781 if ((header & RX_STS_LE_) && 1782 (!(header & RX_STS_FT_))) 1783 dev->net->stats.rx_length_errors++; 1784 } 1785 } else { 1786 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ 1787 if (unlikely(size > (ETH_FRAME_LEN + 12))) { 1788 netif_dbg(dev, rx_err, dev->net, 1789 "size err header=0x%08x\n", header); 1790 return 0; 1791 } 1792 1793 /* last frame in this batch */ 1794 if (skb->len == size) { 1795 if (dev->net->features & NETIF_F_RXCSUM) 1796 smsc95xx_rx_csum_offload(skb); 1797 skb_trim(skb, skb->len - 4); /* remove fcs */ 1798 skb->truesize = size + sizeof(struct sk_buff); 1799 1800 return 1; 1801 } 1802 1803 ax_skb = skb_clone(skb, GFP_ATOMIC); 1804 if (unlikely(!ax_skb)) { 1805 netdev_warn(dev->net, "Error allocating skb\n"); 1806 return 0; 1807 } 1808 1809 ax_skb->len = size; 1810 ax_skb->data = packet; 1811 skb_set_tail_pointer(ax_skb, size); 1812 1813 if (dev->net->features & NETIF_F_RXCSUM) 1814 smsc95xx_rx_csum_offload(ax_skb); 1815 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 1816 ax_skb->truesize = size + sizeof(struct sk_buff); 1817 1818 usbnet_skb_return(dev, ax_skb); 1819 } 1820 1821 skb_pull(skb, size); 1822 1823 /* padding bytes before the next frame starts */ 1824 if (skb->len) 1825 skb_pull(skb, align_count); 1826 } 1827 1828 return 1; 1829 } 1830 1831 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) 1832 { 1833 u16 low_16 = (u16)skb_checksum_start_offset(skb); 1834 u16 high_16 = low_16 + skb->csum_offset; 1835 return (high_16 << 16) | low_16; 1836 } 1837 1838 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, 1839 struct sk_buff *skb, gfp_t flags) 1840 { 1841 bool csum = skb->ip_summed == CHECKSUM_PARTIAL; 1842 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; 1843 u32 tx_cmd_a, tx_cmd_b; 1844 1845 /* We do not advertise SG, so skbs should be already linearized */ 1846 BUG_ON(skb_shinfo(skb)->nr_frags); 1847 1848 if (skb_headroom(skb) < overhead) { 1849 struct sk_buff *skb2 = skb_copy_expand(skb, 1850 overhead, 0, flags); 1851 dev_kfree_skb_any(skb); 1852 skb = skb2; 1853 if (!skb) 1854 return NULL; 1855 } 1856 1857 if (csum) { 1858 if (skb->len <= 45) { 1859 /* workaround - hardware tx checksum does not work 1860 * properly with extremely small packets */ 1861 long csstart = skb_checksum_start_offset(skb); 1862 __wsum calc = csum_partial(skb->data + csstart, 1863 skb->len - csstart, 0); 1864 *((__sum16 *)(skb->data + csstart 1865 + skb->csum_offset)) = csum_fold(calc); 1866 1867 csum = false; 1868 } else { 1869 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); 1870 skb_push(skb, 4); 1871 cpu_to_le32s(&csum_preamble); 1872 memcpy(skb->data, &csum_preamble, 4); 1873 } 1874 } 1875 1876 skb_push(skb, 4); 1877 tx_cmd_b = (u32)(skb->len - 4); 1878 if (csum) 1879 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; 1880 cpu_to_le32s(&tx_cmd_b); 1881 memcpy(skb->data, &tx_cmd_b, 4); 1882 1883 skb_push(skb, 4); 1884 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ | 1885 TX_CMD_A_LAST_SEG_; 1886 cpu_to_le32s(&tx_cmd_a); 1887 memcpy(skb->data, &tx_cmd_a, 4); 1888 1889 return skb; 1890 } 1891 1892 static int smsc95xx_manage_power(struct usbnet *dev, int on) 1893 { 1894 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]); 1895 1896 dev->intf->needs_remote_wakeup = on; 1897 1898 if (pdata->features & FEATURE_REMOTE_WAKEUP) 1899 return 0; 1900 1901 /* this chip revision isn't capable of remote wakeup */ 1902 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n"); 1903 1904 if (on) 1905 usb_autopm_get_interface_no_resume(dev->intf); 1906 else 1907 usb_autopm_put_interface(dev->intf); 1908 1909 return 0; 1910 } 1911 1912 static const struct driver_info smsc95xx_info = { 1913 .description = "smsc95xx USB 2.0 Ethernet", 1914 .bind = smsc95xx_bind, 1915 .unbind = smsc95xx_unbind, 1916 .link_reset = smsc95xx_link_reset, 1917 .reset = smsc95xx_reset, 1918 .rx_fixup = smsc95xx_rx_fixup, 1919 .tx_fixup = smsc95xx_tx_fixup, 1920 .status = smsc95xx_status, 1921 .manage_power = smsc95xx_manage_power, 1922 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 1923 }; 1924 1925 static const struct usb_device_id products[] = { 1926 { 1927 /* SMSC9500 USB Ethernet Device */ 1928 USB_DEVICE(0x0424, 0x9500), 1929 .driver_info = (unsigned long) &smsc95xx_info, 1930 }, 1931 { 1932 /* SMSC9505 USB Ethernet Device */ 1933 USB_DEVICE(0x0424, 0x9505), 1934 .driver_info = (unsigned long) &smsc95xx_info, 1935 }, 1936 { 1937 /* SMSC9500A USB Ethernet Device */ 1938 USB_DEVICE(0x0424, 0x9E00), 1939 .driver_info = (unsigned long) &smsc95xx_info, 1940 }, 1941 { 1942 /* SMSC9505A USB Ethernet Device */ 1943 USB_DEVICE(0x0424, 0x9E01), 1944 .driver_info = (unsigned long) &smsc95xx_info, 1945 }, 1946 { 1947 /* SMSC9512/9514 USB Hub & Ethernet Device */ 1948 USB_DEVICE(0x0424, 0xec00), 1949 .driver_info = (unsigned long) &smsc95xx_info, 1950 }, 1951 { 1952 /* SMSC9500 USB Ethernet Device (SAL10) */ 1953 USB_DEVICE(0x0424, 0x9900), 1954 .driver_info = (unsigned long) &smsc95xx_info, 1955 }, 1956 { 1957 /* SMSC9505 USB Ethernet Device (SAL10) */ 1958 USB_DEVICE(0x0424, 0x9901), 1959 .driver_info = (unsigned long) &smsc95xx_info, 1960 }, 1961 { 1962 /* SMSC9500A USB Ethernet Device (SAL10) */ 1963 USB_DEVICE(0x0424, 0x9902), 1964 .driver_info = (unsigned long) &smsc95xx_info, 1965 }, 1966 { 1967 /* SMSC9505A USB Ethernet Device (SAL10) */ 1968 USB_DEVICE(0x0424, 0x9903), 1969 .driver_info = (unsigned long) &smsc95xx_info, 1970 }, 1971 { 1972 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ 1973 USB_DEVICE(0x0424, 0x9904), 1974 .driver_info = (unsigned long) &smsc95xx_info, 1975 }, 1976 { 1977 /* SMSC9500A USB Ethernet Device (HAL) */ 1978 USB_DEVICE(0x0424, 0x9905), 1979 .driver_info = (unsigned long) &smsc95xx_info, 1980 }, 1981 { 1982 /* SMSC9505A USB Ethernet Device (HAL) */ 1983 USB_DEVICE(0x0424, 0x9906), 1984 .driver_info = (unsigned long) &smsc95xx_info, 1985 }, 1986 { 1987 /* SMSC9500 USB Ethernet Device (Alternate ID) */ 1988 USB_DEVICE(0x0424, 0x9907), 1989 .driver_info = (unsigned long) &smsc95xx_info, 1990 }, 1991 { 1992 /* SMSC9500A USB Ethernet Device (Alternate ID) */ 1993 USB_DEVICE(0x0424, 0x9908), 1994 .driver_info = (unsigned long) &smsc95xx_info, 1995 }, 1996 { 1997 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ 1998 USB_DEVICE(0x0424, 0x9909), 1999 .driver_info = (unsigned long) &smsc95xx_info, 2000 }, 2001 { 2002 /* SMSC LAN9530 USB Ethernet Device */ 2003 USB_DEVICE(0x0424, 0x9530), 2004 .driver_info = (unsigned long) &smsc95xx_info, 2005 }, 2006 { 2007 /* SMSC LAN9730 USB Ethernet Device */ 2008 USB_DEVICE(0x0424, 0x9730), 2009 .driver_info = (unsigned long) &smsc95xx_info, 2010 }, 2011 { 2012 /* SMSC LAN89530 USB Ethernet Device */ 2013 USB_DEVICE(0x0424, 0x9E08), 2014 .driver_info = (unsigned long) &smsc95xx_info, 2015 }, 2016 { }, /* END */ 2017 }; 2018 MODULE_DEVICE_TABLE(usb, products); 2019 2020 static struct usb_driver smsc95xx_driver = { 2021 .name = "smsc95xx", 2022 .id_table = products, 2023 .probe = usbnet_probe, 2024 .suspend = smsc95xx_suspend, 2025 .resume = smsc95xx_resume, 2026 .reset_resume = smsc95xx_reset_resume, 2027 .disconnect = usbnet_disconnect, 2028 .disable_hub_initiated_lpm = 1, 2029 .supports_autosuspend = 1, 2030 }; 2031 2032 module_usb_driver(smsc95xx_driver); 2033 2034 MODULE_AUTHOR("Nancy Lin"); 2035 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2036 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); 2037 MODULE_LICENSE("GPL"); 2038