1 /*************************************************************************** 2 * 3 * Copyright (C) 2007-2010 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, write to the Free Software 17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 * 19 *****************************************************************************/ 20 21 #include <linux/module.h> 22 #include <linux/kmod.h> 23 #include <linux/init.h> 24 #include <linux/netdevice.h> 25 #include <linux/etherdevice.h> 26 #include <linux/ethtool.h> 27 #include <linux/mii.h> 28 #include <linux/usb.h> 29 #include <linux/bitrev.h> 30 #include <linux/crc16.h> 31 #include <linux/crc32.h> 32 #include <linux/usb/usbnet.h> 33 #include <linux/slab.h> 34 #include "smsc75xx.h" 35 36 #define SMSC_CHIPNAME "smsc75xx" 37 #define SMSC_DRIVER_VERSION "1.0.0" 38 #define HS_USB_PKT_SIZE (512) 39 #define FS_USB_PKT_SIZE (64) 40 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 41 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 42 #define DEFAULT_BULK_IN_DELAY (0x00002000) 43 #define MAX_SINGLE_PACKET_SIZE (9000) 44 #define LAN75XX_EEPROM_MAGIC (0x7500) 45 #define EEPROM_MAC_OFFSET (0x01) 46 #define DEFAULT_TX_CSUM_ENABLE (true) 47 #define DEFAULT_RX_CSUM_ENABLE (true) 48 #define DEFAULT_TSO_ENABLE (true) 49 #define SMSC75XX_INTERNAL_PHY_ID (1) 50 #define SMSC75XX_TX_OVERHEAD (8) 51 #define MAX_RX_FIFO_SIZE (20 * 1024) 52 #define MAX_TX_FIFO_SIZE (12 * 1024) 53 #define USB_VENDOR_ID_SMSC (0x0424) 54 #define USB_PRODUCT_ID_LAN7500 (0x7500) 55 #define USB_PRODUCT_ID_LAN7505 (0x7505) 56 #define RXW_PADDING 2 57 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 58 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 59 60 #define SUSPEND_SUSPEND0 (0x01) 61 #define SUSPEND_SUSPEND1 (0x02) 62 #define SUSPEND_SUSPEND2 (0x04) 63 #define SUSPEND_SUSPEND3 (0x08) 64 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 65 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 66 67 struct smsc75xx_priv { 68 struct usbnet *dev; 69 u32 rfe_ctl; 70 u32 wolopts; 71 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 72 struct mutex dataport_mutex; 73 spinlock_t rfe_ctl_lock; 74 struct work_struct set_multicast; 75 u8 suspend_flags; 76 }; 77 78 struct usb_context { 79 struct usb_ctrlrequest req; 80 struct usbnet *dev; 81 }; 82 83 static bool turbo_mode = true; 84 module_param(turbo_mode, bool, 0644); 85 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 86 87 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 88 u32 *data, int in_pm) 89 { 90 u32 buf; 91 int ret; 92 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 93 94 BUG_ON(!dev); 95 96 if (!in_pm) 97 fn = usbnet_read_cmd; 98 else 99 fn = usbnet_read_cmd_nopm; 100 101 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 102 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 103 0, index, &buf, 4); 104 if (unlikely(ret < 0)) 105 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 106 index, ret); 107 108 le32_to_cpus(&buf); 109 *data = buf; 110 111 return ret; 112 } 113 114 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 115 u32 data, int in_pm) 116 { 117 u32 buf; 118 int ret; 119 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 120 121 BUG_ON(!dev); 122 123 if (!in_pm) 124 fn = usbnet_write_cmd; 125 else 126 fn = usbnet_write_cmd_nopm; 127 128 buf = data; 129 cpu_to_le32s(&buf); 130 131 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 132 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 133 0, index, &buf, 4); 134 if (unlikely(ret < 0)) 135 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 136 index, ret); 137 138 return ret; 139 } 140 141 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 142 u32 *data) 143 { 144 return __smsc75xx_read_reg(dev, index, data, 1); 145 } 146 147 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 148 u32 data) 149 { 150 return __smsc75xx_write_reg(dev, index, data, 1); 151 } 152 153 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 154 u32 *data) 155 { 156 return __smsc75xx_read_reg(dev, index, data, 0); 157 } 158 159 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 160 u32 data) 161 { 162 return __smsc75xx_write_reg(dev, index, data, 0); 163 } 164 165 /* Loop until the read is completed with timeout 166 * called with phy_mutex held */ 167 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 168 int in_pm) 169 { 170 unsigned long start_time = jiffies; 171 u32 val; 172 int ret; 173 174 do { 175 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 176 if (ret < 0) { 177 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 178 return ret; 179 } 180 181 if (!(val & MII_ACCESS_BUSY)) 182 return 0; 183 } while (!time_after(jiffies, start_time + HZ)); 184 185 return -EIO; 186 } 187 188 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 189 int in_pm) 190 { 191 struct usbnet *dev = netdev_priv(netdev); 192 u32 val, addr; 193 int ret; 194 195 mutex_lock(&dev->phy_mutex); 196 197 /* confirm MII not busy */ 198 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 199 if (ret < 0) { 200 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 201 goto done; 202 } 203 204 /* set the address, index & direction (read from PHY) */ 205 phy_id &= dev->mii.phy_id_mask; 206 idx &= dev->mii.reg_num_mask; 207 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 208 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 209 | MII_ACCESS_READ | MII_ACCESS_BUSY; 210 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 211 if (ret < 0) { 212 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 213 goto done; 214 } 215 216 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 217 if (ret < 0) { 218 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 219 goto done; 220 } 221 222 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 223 if (ret < 0) { 224 netdev_warn(dev->net, "Error reading MII_DATA\n"); 225 goto done; 226 } 227 228 ret = (u16)(val & 0xFFFF); 229 230 done: 231 mutex_unlock(&dev->phy_mutex); 232 return ret; 233 } 234 235 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 236 int idx, int regval, int in_pm) 237 { 238 struct usbnet *dev = netdev_priv(netdev); 239 u32 val, addr; 240 int ret; 241 242 mutex_lock(&dev->phy_mutex); 243 244 /* confirm MII not busy */ 245 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 246 if (ret < 0) { 247 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 248 goto done; 249 } 250 251 val = regval; 252 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 253 if (ret < 0) { 254 netdev_warn(dev->net, "Error writing MII_DATA\n"); 255 goto done; 256 } 257 258 /* set the address, index & direction (write to PHY) */ 259 phy_id &= dev->mii.phy_id_mask; 260 idx &= dev->mii.reg_num_mask; 261 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 262 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 263 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 264 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 265 if (ret < 0) { 266 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 267 goto done; 268 } 269 270 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 271 if (ret < 0) { 272 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 273 goto done; 274 } 275 276 done: 277 mutex_unlock(&dev->phy_mutex); 278 } 279 280 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 281 int idx) 282 { 283 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 284 } 285 286 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 287 int idx, int regval) 288 { 289 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 290 } 291 292 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 293 { 294 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 295 } 296 297 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 298 int regval) 299 { 300 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 301 } 302 303 static int smsc75xx_wait_eeprom(struct usbnet *dev) 304 { 305 unsigned long start_time = jiffies; 306 u32 val; 307 int ret; 308 309 do { 310 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 311 if (ret < 0) { 312 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 313 return ret; 314 } 315 316 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 317 break; 318 udelay(40); 319 } while (!time_after(jiffies, start_time + HZ)); 320 321 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 322 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 323 return -EIO; 324 } 325 326 return 0; 327 } 328 329 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 330 { 331 unsigned long start_time = jiffies; 332 u32 val; 333 int ret; 334 335 do { 336 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 337 if (ret < 0) { 338 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 339 return ret; 340 } 341 342 if (!(val & E2P_CMD_BUSY)) 343 return 0; 344 345 udelay(40); 346 } while (!time_after(jiffies, start_time + HZ)); 347 348 netdev_warn(dev->net, "EEPROM is busy\n"); 349 return -EIO; 350 } 351 352 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 353 u8 *data) 354 { 355 u32 val; 356 int i, ret; 357 358 BUG_ON(!dev); 359 BUG_ON(!data); 360 361 ret = smsc75xx_eeprom_confirm_not_busy(dev); 362 if (ret) 363 return ret; 364 365 for (i = 0; i < length; i++) { 366 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 367 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 368 if (ret < 0) { 369 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 370 return ret; 371 } 372 373 ret = smsc75xx_wait_eeprom(dev); 374 if (ret < 0) 375 return ret; 376 377 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 378 if (ret < 0) { 379 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 380 return ret; 381 } 382 383 data[i] = val & 0xFF; 384 offset++; 385 } 386 387 return 0; 388 } 389 390 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 391 u8 *data) 392 { 393 u32 val; 394 int i, ret; 395 396 BUG_ON(!dev); 397 BUG_ON(!data); 398 399 ret = smsc75xx_eeprom_confirm_not_busy(dev); 400 if (ret) 401 return ret; 402 403 /* Issue write/erase enable command */ 404 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 405 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 406 if (ret < 0) { 407 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 408 return ret; 409 } 410 411 ret = smsc75xx_wait_eeprom(dev); 412 if (ret < 0) 413 return ret; 414 415 for (i = 0; i < length; i++) { 416 417 /* Fill data register */ 418 val = data[i]; 419 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 420 if (ret < 0) { 421 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 422 return ret; 423 } 424 425 /* Send "write" command */ 426 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 427 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 428 if (ret < 0) { 429 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 430 return ret; 431 } 432 433 ret = smsc75xx_wait_eeprom(dev); 434 if (ret < 0) 435 return ret; 436 437 offset++; 438 } 439 440 return 0; 441 } 442 443 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 444 { 445 int i, ret; 446 447 for (i = 0; i < 100; i++) { 448 u32 dp_sel; 449 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 450 if (ret < 0) { 451 netdev_warn(dev->net, "Error reading DP_SEL\n"); 452 return ret; 453 } 454 455 if (dp_sel & DP_SEL_DPRDY) 456 return 0; 457 458 udelay(40); 459 } 460 461 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 462 463 return -EIO; 464 } 465 466 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 467 u32 length, u32 *buf) 468 { 469 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 470 u32 dp_sel; 471 int i, ret; 472 473 mutex_lock(&pdata->dataport_mutex); 474 475 ret = smsc75xx_dataport_wait_not_busy(dev); 476 if (ret < 0) { 477 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 478 goto done; 479 } 480 481 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 482 if (ret < 0) { 483 netdev_warn(dev->net, "Error reading DP_SEL\n"); 484 goto done; 485 } 486 487 dp_sel &= ~DP_SEL_RSEL; 488 dp_sel |= ram_select; 489 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 490 if (ret < 0) { 491 netdev_warn(dev->net, "Error writing DP_SEL\n"); 492 goto done; 493 } 494 495 for (i = 0; i < length; i++) { 496 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 497 if (ret < 0) { 498 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 499 goto done; 500 } 501 502 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 503 if (ret < 0) { 504 netdev_warn(dev->net, "Error writing DP_DATA\n"); 505 goto done; 506 } 507 508 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 509 if (ret < 0) { 510 netdev_warn(dev->net, "Error writing DP_CMD\n"); 511 goto done; 512 } 513 514 ret = smsc75xx_dataport_wait_not_busy(dev); 515 if (ret < 0) { 516 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 517 goto done; 518 } 519 } 520 521 done: 522 mutex_unlock(&pdata->dataport_mutex); 523 return ret; 524 } 525 526 /* returns hash bit number for given MAC address */ 527 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 528 { 529 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 530 } 531 532 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 533 { 534 struct smsc75xx_priv *pdata = 535 container_of(param, struct smsc75xx_priv, set_multicast); 536 struct usbnet *dev = pdata->dev; 537 int ret; 538 539 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 540 pdata->rfe_ctl); 541 542 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 543 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 544 545 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 546 if (ret < 0) 547 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 548 } 549 550 static void smsc75xx_set_multicast(struct net_device *netdev) 551 { 552 struct usbnet *dev = netdev_priv(netdev); 553 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 554 unsigned long flags; 555 int i; 556 557 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 558 559 pdata->rfe_ctl &= 560 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 561 pdata->rfe_ctl |= RFE_CTL_AB; 562 563 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 564 pdata->multicast_hash_table[i] = 0; 565 566 if (dev->net->flags & IFF_PROMISC) { 567 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 568 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 569 } else if (dev->net->flags & IFF_ALLMULTI) { 570 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 571 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 572 } else if (!netdev_mc_empty(dev->net)) { 573 struct netdev_hw_addr *ha; 574 575 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 576 577 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 578 579 netdev_for_each_mc_addr(ha, netdev) { 580 u32 bitnum = smsc75xx_hash(ha->addr); 581 pdata->multicast_hash_table[bitnum / 32] |= 582 (1 << (bitnum % 32)); 583 } 584 } else { 585 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 586 pdata->rfe_ctl |= RFE_CTL_DPF; 587 } 588 589 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 590 591 /* defer register writes to a sleepable context */ 592 schedule_work(&pdata->set_multicast); 593 } 594 595 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 596 u16 lcladv, u16 rmtadv) 597 { 598 u32 flow = 0, fct_flow = 0; 599 int ret; 600 601 if (duplex == DUPLEX_FULL) { 602 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 603 604 if (cap & FLOW_CTRL_TX) { 605 flow = (FLOW_TX_FCEN | 0xFFFF); 606 /* set fct_flow thresholds to 20% and 80% */ 607 fct_flow = (8 << 8) | 32; 608 } 609 610 if (cap & FLOW_CTRL_RX) 611 flow |= FLOW_RX_FCEN; 612 613 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 614 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 615 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 616 } else { 617 netif_dbg(dev, link, dev->net, "half duplex\n"); 618 } 619 620 ret = smsc75xx_write_reg(dev, FLOW, flow); 621 if (ret < 0) { 622 netdev_warn(dev->net, "Error writing FLOW\n"); 623 return ret; 624 } 625 626 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 627 if (ret < 0) { 628 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 629 return ret; 630 } 631 632 return 0; 633 } 634 635 static int smsc75xx_link_reset(struct usbnet *dev) 636 { 637 struct mii_if_info *mii = &dev->mii; 638 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 639 u16 lcladv, rmtadv; 640 int ret; 641 642 /* write to clear phy interrupt status */ 643 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 644 PHY_INT_SRC_CLEAR_ALL); 645 646 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 647 if (ret < 0) { 648 netdev_warn(dev->net, "Error writing INT_STS\n"); 649 return ret; 650 } 651 652 mii_check_media(mii, 1, 1); 653 mii_ethtool_gset(&dev->mii, &ecmd); 654 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 655 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 656 657 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 658 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 659 660 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 661 } 662 663 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 664 { 665 u32 intdata; 666 667 if (urb->actual_length != 4) { 668 netdev_warn(dev->net, "unexpected urb length %d\n", 669 urb->actual_length); 670 return; 671 } 672 673 memcpy(&intdata, urb->transfer_buffer, 4); 674 le32_to_cpus(&intdata); 675 676 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 677 678 if (intdata & INT_ENP_PHY_INT) 679 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 680 else 681 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 682 intdata); 683 } 684 685 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 686 { 687 return MAX_EEPROM_SIZE; 688 } 689 690 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 691 struct ethtool_eeprom *ee, u8 *data) 692 { 693 struct usbnet *dev = netdev_priv(netdev); 694 695 ee->magic = LAN75XX_EEPROM_MAGIC; 696 697 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 698 } 699 700 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 701 struct ethtool_eeprom *ee, u8 *data) 702 { 703 struct usbnet *dev = netdev_priv(netdev); 704 705 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 706 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 707 ee->magic); 708 return -EINVAL; 709 } 710 711 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 712 } 713 714 static void smsc75xx_ethtool_get_wol(struct net_device *net, 715 struct ethtool_wolinfo *wolinfo) 716 { 717 struct usbnet *dev = netdev_priv(net); 718 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 719 720 wolinfo->supported = SUPPORTED_WAKE; 721 wolinfo->wolopts = pdata->wolopts; 722 } 723 724 static int smsc75xx_ethtool_set_wol(struct net_device *net, 725 struct ethtool_wolinfo *wolinfo) 726 { 727 struct usbnet *dev = netdev_priv(net); 728 struct smsc75xx_priv *pdata = (struct smsc75xx_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 smsc75xx_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 = smsc75xx_ethtool_get_eeprom_len, 749 .get_eeprom = smsc75xx_ethtool_get_eeprom, 750 .set_eeprom = smsc75xx_ethtool_set_eeprom, 751 .get_wol = smsc75xx_ethtool_get_wol, 752 .set_wol = smsc75xx_ethtool_set_wol, 753 }; 754 755 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 756 { 757 struct usbnet *dev = netdev_priv(netdev); 758 759 if (!netif_running(netdev)) 760 return -EINVAL; 761 762 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 763 } 764 765 static void smsc75xx_init_mac_address(struct usbnet *dev) 766 { 767 /* try reading mac address from EEPROM */ 768 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 769 dev->net->dev_addr) == 0) { 770 if (is_valid_ether_addr(dev->net->dev_addr)) { 771 /* eeprom values are valid so use them */ 772 netif_dbg(dev, ifup, dev->net, 773 "MAC address read from EEPROM\n"); 774 return; 775 } 776 } 777 778 /* no eeprom, or eeprom values are invalid. generate random MAC */ 779 eth_hw_addr_random(dev->net); 780 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 781 } 782 783 static int smsc75xx_set_mac_address(struct usbnet *dev) 784 { 785 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 786 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 787 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 788 789 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 790 if (ret < 0) { 791 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 792 return ret; 793 } 794 795 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 796 if (ret < 0) { 797 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 798 return ret; 799 } 800 801 addr_hi |= ADDR_FILTX_FB_VALID; 802 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 803 if (ret < 0) { 804 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 805 return ret; 806 } 807 808 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 809 if (ret < 0) 810 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 811 812 return ret; 813 } 814 815 static int smsc75xx_phy_initialize(struct usbnet *dev) 816 { 817 int bmcr, ret, timeout = 0; 818 819 /* Initialize MII structure */ 820 dev->mii.dev = dev->net; 821 dev->mii.mdio_read = smsc75xx_mdio_read; 822 dev->mii.mdio_write = smsc75xx_mdio_write; 823 dev->mii.phy_id_mask = 0x1f; 824 dev->mii.reg_num_mask = 0x1f; 825 dev->mii.supports_gmii = 1; 826 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 827 828 /* reset phy and wait for reset to complete */ 829 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 830 831 do { 832 msleep(10); 833 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 834 if (bmcr < 0) { 835 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 836 return bmcr; 837 } 838 timeout++; 839 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 840 841 if (timeout >= 100) { 842 netdev_warn(dev->net, "timeout on PHY Reset\n"); 843 return -EIO; 844 } 845 846 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 847 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 848 ADVERTISE_PAUSE_ASYM); 849 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 850 ADVERTISE_1000FULL); 851 852 /* read and write to clear phy interrupt status */ 853 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 854 if (ret < 0) { 855 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 856 return ret; 857 } 858 859 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 860 861 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 862 PHY_INT_MASK_DEFAULT); 863 mii_nway_restart(&dev->mii); 864 865 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 866 return 0; 867 } 868 869 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 870 { 871 int ret = 0; 872 u32 buf; 873 bool rxenabled; 874 875 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 876 if (ret < 0) { 877 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 878 return ret; 879 } 880 881 rxenabled = ((buf & MAC_RX_RXEN) != 0); 882 883 if (rxenabled) { 884 buf &= ~MAC_RX_RXEN; 885 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 886 if (ret < 0) { 887 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 888 return ret; 889 } 890 } 891 892 /* add 4 to size for FCS */ 893 buf &= ~MAC_RX_MAX_SIZE; 894 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 895 896 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 897 if (ret < 0) { 898 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 899 return ret; 900 } 901 902 if (rxenabled) { 903 buf |= MAC_RX_RXEN; 904 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 905 if (ret < 0) { 906 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 907 return ret; 908 } 909 } 910 911 return 0; 912 } 913 914 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 915 { 916 struct usbnet *dev = netdev_priv(netdev); 917 918 int ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu); 919 if (ret < 0) { 920 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 921 return ret; 922 } 923 924 return usbnet_change_mtu(netdev, new_mtu); 925 } 926 927 /* Enable or disable Rx checksum offload engine */ 928 static int smsc75xx_set_features(struct net_device *netdev, 929 netdev_features_t features) 930 { 931 struct usbnet *dev = netdev_priv(netdev); 932 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 933 unsigned long flags; 934 int ret; 935 936 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 937 938 if (features & NETIF_F_RXCSUM) 939 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 940 else 941 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 942 943 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 944 /* it's racing here! */ 945 946 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 947 if (ret < 0) 948 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 949 950 return ret; 951 } 952 953 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 954 { 955 int timeout = 0; 956 957 do { 958 u32 buf; 959 int ret; 960 961 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 962 963 if (ret < 0) { 964 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 965 return ret; 966 } 967 968 if (buf & PMT_CTL_DEV_RDY) 969 return 0; 970 971 msleep(10); 972 timeout++; 973 } while (timeout < 100); 974 975 netdev_warn(dev->net, "timeout waiting for device ready\n"); 976 return -EIO; 977 } 978 979 static int smsc75xx_reset(struct usbnet *dev) 980 { 981 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 982 u32 buf; 983 int ret = 0, timeout; 984 985 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 986 987 ret = smsc75xx_wait_ready(dev, 0); 988 if (ret < 0) { 989 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 990 return ret; 991 } 992 993 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 994 if (ret < 0) { 995 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 996 return ret; 997 } 998 999 buf |= HW_CFG_LRST; 1000 1001 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1002 if (ret < 0) { 1003 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1004 return ret; 1005 } 1006 1007 timeout = 0; 1008 do { 1009 msleep(10); 1010 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1011 if (ret < 0) { 1012 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1013 return ret; 1014 } 1015 timeout++; 1016 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1017 1018 if (timeout >= 100) { 1019 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1020 return -EIO; 1021 } 1022 1023 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1024 1025 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1026 if (ret < 0) { 1027 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1028 return ret; 1029 } 1030 1031 buf |= PMT_CTL_PHY_RST; 1032 1033 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1034 if (ret < 0) { 1035 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1036 return ret; 1037 } 1038 1039 timeout = 0; 1040 do { 1041 msleep(10); 1042 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1043 if (ret < 0) { 1044 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1045 return ret; 1046 } 1047 timeout++; 1048 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1049 1050 if (timeout >= 100) { 1051 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1052 return -EIO; 1053 } 1054 1055 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1056 1057 ret = smsc75xx_set_mac_address(dev); 1058 if (ret < 0) { 1059 netdev_warn(dev->net, "Failed to set mac address\n"); 1060 return ret; 1061 } 1062 1063 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1064 dev->net->dev_addr); 1065 1066 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1067 if (ret < 0) { 1068 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1069 return ret; 1070 } 1071 1072 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1073 buf); 1074 1075 buf |= HW_CFG_BIR; 1076 1077 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1078 if (ret < 0) { 1079 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1080 return ret; 1081 } 1082 1083 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1084 if (ret < 0) { 1085 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1086 return ret; 1087 } 1088 1089 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1090 buf); 1091 1092 if (!turbo_mode) { 1093 buf = 0; 1094 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1095 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1096 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1097 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1098 } else { 1099 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1100 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1101 } 1102 1103 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1104 (ulong)dev->rx_urb_size); 1105 1106 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1107 if (ret < 0) { 1108 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1109 return ret; 1110 } 1111 1112 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1113 if (ret < 0) { 1114 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1115 return ret; 1116 } 1117 1118 netif_dbg(dev, ifup, dev->net, 1119 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1120 1121 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1122 if (ret < 0) { 1123 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1124 return ret; 1125 } 1126 1127 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1128 if (ret < 0) { 1129 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1130 return ret; 1131 } 1132 1133 netif_dbg(dev, ifup, dev->net, 1134 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1135 1136 if (turbo_mode) { 1137 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1138 if (ret < 0) { 1139 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1140 return ret; 1141 } 1142 1143 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1144 1145 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1146 1147 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1148 if (ret < 0) { 1149 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1150 return ret; 1151 } 1152 1153 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1154 if (ret < 0) { 1155 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1156 return ret; 1157 } 1158 1159 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1160 } 1161 1162 /* set FIFO sizes */ 1163 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1164 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1165 if (ret < 0) { 1166 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1167 return ret; 1168 } 1169 1170 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1171 1172 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1173 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1174 if (ret < 0) { 1175 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1176 return ret; 1177 } 1178 1179 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1180 1181 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1182 if (ret < 0) { 1183 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1184 return ret; 1185 } 1186 1187 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1188 if (ret < 0) { 1189 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1190 return ret; 1191 } 1192 1193 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1194 1195 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1196 if (ret < 0) { 1197 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1198 return ret; 1199 } 1200 1201 /* only set default GPIO/LED settings if no EEPROM is detected */ 1202 if (!(buf & E2P_CMD_LOADED)) { 1203 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1204 if (ret < 0) { 1205 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1206 return ret; 1207 } 1208 1209 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1210 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1211 1212 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1213 if (ret < 0) { 1214 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1215 return ret; 1216 } 1217 } 1218 1219 ret = smsc75xx_write_reg(dev, FLOW, 0); 1220 if (ret < 0) { 1221 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1222 return ret; 1223 } 1224 1225 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1226 if (ret < 0) { 1227 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1228 return ret; 1229 } 1230 1231 /* Don't need rfe_ctl_lock during initialisation */ 1232 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1233 if (ret < 0) { 1234 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1235 return ret; 1236 } 1237 1238 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1239 1240 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1241 if (ret < 0) { 1242 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1243 return ret; 1244 } 1245 1246 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1247 if (ret < 0) { 1248 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1249 return ret; 1250 } 1251 1252 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1253 pdata->rfe_ctl); 1254 1255 /* Enable or disable checksum offload engines */ 1256 smsc75xx_set_features(dev->net, dev->net->features); 1257 1258 smsc75xx_set_multicast(dev->net); 1259 1260 ret = smsc75xx_phy_initialize(dev); 1261 if (ret < 0) { 1262 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1263 return ret; 1264 } 1265 1266 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1267 if (ret < 0) { 1268 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1269 return ret; 1270 } 1271 1272 /* enable PHY interrupts */ 1273 buf |= INT_ENP_PHY_INT; 1274 1275 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1276 if (ret < 0) { 1277 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1278 return ret; 1279 } 1280 1281 /* allow mac to detect speed and duplex from phy */ 1282 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1283 if (ret < 0) { 1284 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1285 return ret; 1286 } 1287 1288 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1289 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1290 if (ret < 0) { 1291 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1292 return ret; 1293 } 1294 1295 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1296 if (ret < 0) { 1297 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1298 return ret; 1299 } 1300 1301 buf |= MAC_TX_TXEN; 1302 1303 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1304 if (ret < 0) { 1305 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1306 return ret; 1307 } 1308 1309 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1310 1311 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1312 if (ret < 0) { 1313 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1314 return ret; 1315 } 1316 1317 buf |= FCT_TX_CTL_EN; 1318 1319 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1320 if (ret < 0) { 1321 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1322 return ret; 1323 } 1324 1325 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1326 1327 ret = smsc75xx_set_rx_max_frame_length(dev, 1514); 1328 if (ret < 0) { 1329 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1330 return ret; 1331 } 1332 1333 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1334 if (ret < 0) { 1335 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1336 return ret; 1337 } 1338 1339 buf |= MAC_RX_RXEN; 1340 1341 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1342 if (ret < 0) { 1343 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1344 return ret; 1345 } 1346 1347 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1348 1349 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1350 if (ret < 0) { 1351 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1352 return ret; 1353 } 1354 1355 buf |= FCT_RX_CTL_EN; 1356 1357 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1358 if (ret < 0) { 1359 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1360 return ret; 1361 } 1362 1363 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1364 1365 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1366 return 0; 1367 } 1368 1369 static const struct net_device_ops smsc75xx_netdev_ops = { 1370 .ndo_open = usbnet_open, 1371 .ndo_stop = usbnet_stop, 1372 .ndo_start_xmit = usbnet_start_xmit, 1373 .ndo_tx_timeout = usbnet_tx_timeout, 1374 .ndo_change_mtu = smsc75xx_change_mtu, 1375 .ndo_set_mac_address = eth_mac_addr, 1376 .ndo_validate_addr = eth_validate_addr, 1377 .ndo_do_ioctl = smsc75xx_ioctl, 1378 .ndo_set_rx_mode = smsc75xx_set_multicast, 1379 .ndo_set_features = smsc75xx_set_features, 1380 }; 1381 1382 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1383 { 1384 struct smsc75xx_priv *pdata = NULL; 1385 int ret; 1386 1387 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1388 1389 ret = usbnet_get_endpoints(dev, intf); 1390 if (ret < 0) { 1391 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1392 return ret; 1393 } 1394 1395 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1396 GFP_KERNEL); 1397 1398 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1399 if (!pdata) { 1400 netdev_warn(dev->net, "Unable to allocate smsc75xx_priv\n"); 1401 return -ENOMEM; 1402 } 1403 1404 pdata->dev = dev; 1405 1406 spin_lock_init(&pdata->rfe_ctl_lock); 1407 mutex_init(&pdata->dataport_mutex); 1408 1409 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1410 1411 if (DEFAULT_TX_CSUM_ENABLE) { 1412 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1413 if (DEFAULT_TSO_ENABLE) 1414 dev->net->features |= NETIF_F_SG | 1415 NETIF_F_TSO | NETIF_F_TSO6; 1416 } 1417 if (DEFAULT_RX_CSUM_ENABLE) 1418 dev->net->features |= NETIF_F_RXCSUM; 1419 1420 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1421 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_RXCSUM; 1422 1423 ret = smsc75xx_wait_ready(dev, 0); 1424 if (ret < 0) { 1425 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1426 return ret; 1427 } 1428 1429 smsc75xx_init_mac_address(dev); 1430 1431 /* Init all registers */ 1432 ret = smsc75xx_reset(dev); 1433 if (ret < 0) { 1434 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1435 return ret; 1436 } 1437 1438 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1439 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1440 dev->net->flags |= IFF_MULTICAST; 1441 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1442 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1443 return 0; 1444 } 1445 1446 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1447 { 1448 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1449 if (pdata) { 1450 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1451 kfree(pdata); 1452 pdata = NULL; 1453 dev->data[0] = 0; 1454 } 1455 } 1456 1457 static u16 smsc_crc(const u8 *buffer, size_t len) 1458 { 1459 return bitrev16(crc16(0xFFFF, buffer, len)); 1460 } 1461 1462 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1463 u32 wuf_mask1) 1464 { 1465 int cfg_base = WUF_CFGX + filter * 4; 1466 int mask_base = WUF_MASKX + filter * 16; 1467 int ret; 1468 1469 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1470 if (ret < 0) { 1471 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1472 return ret; 1473 } 1474 1475 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1476 if (ret < 0) { 1477 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1478 return ret; 1479 } 1480 1481 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1482 if (ret < 0) { 1483 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1484 return ret; 1485 } 1486 1487 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1488 if (ret < 0) { 1489 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1490 return ret; 1491 } 1492 1493 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1494 if (ret < 0) { 1495 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1496 return ret; 1497 } 1498 1499 return 0; 1500 } 1501 1502 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1503 { 1504 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1505 u32 val; 1506 int ret; 1507 1508 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1509 if (ret < 0) { 1510 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1511 return ret; 1512 } 1513 1514 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1515 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1516 1517 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1518 if (ret < 0) { 1519 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1520 return ret; 1521 } 1522 1523 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1524 1525 return 0; 1526 } 1527 1528 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1529 { 1530 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1531 u32 val; 1532 int ret; 1533 1534 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1535 if (ret < 0) { 1536 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1537 return ret; 1538 } 1539 1540 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1541 val |= PMT_CTL_SUS_MODE_1; 1542 1543 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1544 if (ret < 0) { 1545 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1546 return ret; 1547 } 1548 1549 /* clear wol status, enable energy detection */ 1550 val &= ~PMT_CTL_WUPS; 1551 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1552 1553 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1554 if (ret < 0) { 1555 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1556 return ret; 1557 } 1558 1559 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1560 1561 return 0; 1562 } 1563 1564 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1565 { 1566 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1567 u32 val; 1568 int ret; 1569 1570 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1571 if (ret < 0) { 1572 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1573 return ret; 1574 } 1575 1576 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1577 val |= PMT_CTL_SUS_MODE_2; 1578 1579 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1580 if (ret < 0) { 1581 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1582 return ret; 1583 } 1584 1585 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1586 1587 return 0; 1588 } 1589 1590 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1591 { 1592 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1593 u32 val; 1594 int ret; 1595 1596 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1597 if (ret < 0) { 1598 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1599 return ret; 1600 } 1601 1602 if (val & FCT_RX_CTL_RXUSED) { 1603 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1604 return -EBUSY; 1605 } 1606 1607 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1608 if (ret < 0) { 1609 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1610 return ret; 1611 } 1612 1613 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1614 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1615 1616 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1617 if (ret < 0) { 1618 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1619 return ret; 1620 } 1621 1622 /* clear wol status */ 1623 val &= ~PMT_CTL_WUPS; 1624 val |= PMT_CTL_WUPS_WOL; 1625 1626 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1627 if (ret < 0) { 1628 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1629 return ret; 1630 } 1631 1632 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1633 1634 return 0; 1635 } 1636 1637 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1638 { 1639 struct mii_if_info *mii = &dev->mii; 1640 int ret; 1641 1642 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1643 1644 /* read to clear */ 1645 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1646 if (ret < 0) { 1647 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1648 return ret; 1649 } 1650 1651 /* enable interrupt source */ 1652 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1653 if (ret < 0) { 1654 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1655 return ret; 1656 } 1657 1658 ret |= mask; 1659 1660 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1661 1662 return 0; 1663 } 1664 1665 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1666 { 1667 struct mii_if_info *mii = &dev->mii; 1668 int ret; 1669 1670 /* first, a dummy read, needed to latch some MII phys */ 1671 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1672 if (ret < 0) { 1673 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1674 return ret; 1675 } 1676 1677 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1678 if (ret < 0) { 1679 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1680 return ret; 1681 } 1682 1683 return !!(ret & BMSR_LSTATUS); 1684 } 1685 1686 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1687 { 1688 int ret; 1689 1690 if (!netif_running(dev->net)) { 1691 /* interface is ifconfig down so fully power down hw */ 1692 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1693 return smsc75xx_enter_suspend2(dev); 1694 } 1695 1696 if (!link_up) { 1697 /* link is down so enter EDPD mode */ 1698 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1699 1700 /* enable PHY wakeup events for if cable is attached */ 1701 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1702 PHY_INT_MASK_ANEG_COMP); 1703 if (ret < 0) { 1704 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1705 return ret; 1706 } 1707 1708 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1709 return smsc75xx_enter_suspend1(dev); 1710 } 1711 1712 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1713 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1714 PHY_INT_MASK_LINK_DOWN); 1715 if (ret < 0) { 1716 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1717 return ret; 1718 } 1719 1720 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1721 return smsc75xx_enter_suspend3(dev); 1722 } 1723 1724 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1725 { 1726 struct usbnet *dev = usb_get_intfdata(intf); 1727 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1728 u32 val, link_up; 1729 int ret; 1730 1731 ret = usbnet_suspend(intf, message); 1732 if (ret < 0) { 1733 netdev_warn(dev->net, "usbnet_suspend error\n"); 1734 return ret; 1735 } 1736 1737 if (pdata->suspend_flags) { 1738 netdev_warn(dev->net, "error during last resume\n"); 1739 pdata->suspend_flags = 0; 1740 } 1741 1742 /* determine if link is up using only _nopm functions */ 1743 link_up = smsc75xx_link_ok_nopm(dev); 1744 1745 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1746 ret = smsc75xx_autosuspend(dev, link_up); 1747 goto done; 1748 } 1749 1750 /* if we get this far we're not autosuspending */ 1751 /* if no wol options set, or if link is down and we're not waking on 1752 * PHY activity, enter lowest power SUSPEND2 mode 1753 */ 1754 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1755 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1756 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1757 1758 /* disable energy detect (link up) & wake up events */ 1759 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1760 if (ret < 0) { 1761 netdev_warn(dev->net, "Error reading WUCSR\n"); 1762 goto done; 1763 } 1764 1765 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1766 1767 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1768 if (ret < 0) { 1769 netdev_warn(dev->net, "Error writing WUCSR\n"); 1770 goto done; 1771 } 1772 1773 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1774 if (ret < 0) { 1775 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1776 goto done; 1777 } 1778 1779 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1780 1781 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1782 if (ret < 0) { 1783 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1784 goto done; 1785 } 1786 1787 ret = smsc75xx_enter_suspend2(dev); 1788 goto done; 1789 } 1790 1791 if (pdata->wolopts & WAKE_PHY) { 1792 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1793 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1794 if (ret < 0) { 1795 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1796 goto done; 1797 } 1798 1799 /* if link is down then configure EDPD and enter SUSPEND1, 1800 * otherwise enter SUSPEND0 below 1801 */ 1802 if (!link_up) { 1803 struct mii_if_info *mii = &dev->mii; 1804 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1805 1806 /* enable energy detect power-down mode */ 1807 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1808 PHY_MODE_CTRL_STS); 1809 if (ret < 0) { 1810 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1811 goto done; 1812 } 1813 1814 ret |= MODE_CTRL_STS_EDPWRDOWN; 1815 1816 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1817 PHY_MODE_CTRL_STS, ret); 1818 1819 /* enter SUSPEND1 mode */ 1820 ret = smsc75xx_enter_suspend1(dev); 1821 goto done; 1822 } 1823 } 1824 1825 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1826 int i, filter = 0; 1827 1828 /* disable all filters */ 1829 for (i = 0; i < WUF_NUM; i++) { 1830 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1831 if (ret < 0) { 1832 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1833 goto done; 1834 } 1835 } 1836 1837 if (pdata->wolopts & WAKE_MCAST) { 1838 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1839 netdev_info(dev->net, "enabling multicast detection\n"); 1840 1841 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1842 | smsc_crc(mcast, 3); 1843 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1844 if (ret < 0) { 1845 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1846 goto done; 1847 } 1848 } 1849 1850 if (pdata->wolopts & WAKE_ARP) { 1851 const u8 arp[] = {0x08, 0x06}; 1852 netdev_info(dev->net, "enabling ARP detection\n"); 1853 1854 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1855 | smsc_crc(arp, 2); 1856 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1857 if (ret < 0) { 1858 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1859 goto done; 1860 } 1861 } 1862 1863 /* clear any pending pattern match packet status */ 1864 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1865 if (ret < 0) { 1866 netdev_warn(dev->net, "Error reading WUCSR\n"); 1867 goto done; 1868 } 1869 1870 val |= WUCSR_WUFR; 1871 1872 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1873 if (ret < 0) { 1874 netdev_warn(dev->net, "Error writing WUCSR\n"); 1875 goto done; 1876 } 1877 1878 netdev_info(dev->net, "enabling packet match detection\n"); 1879 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1880 if (ret < 0) { 1881 netdev_warn(dev->net, "Error reading WUCSR\n"); 1882 goto done; 1883 } 1884 1885 val |= WUCSR_WUEN; 1886 1887 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1888 if (ret < 0) { 1889 netdev_warn(dev->net, "Error writing WUCSR\n"); 1890 goto done; 1891 } 1892 } else { 1893 netdev_info(dev->net, "disabling packet match detection\n"); 1894 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1895 if (ret < 0) { 1896 netdev_warn(dev->net, "Error reading WUCSR\n"); 1897 goto done; 1898 } 1899 1900 val &= ~WUCSR_WUEN; 1901 1902 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1903 if (ret < 0) { 1904 netdev_warn(dev->net, "Error writing WUCSR\n"); 1905 goto done; 1906 } 1907 } 1908 1909 /* disable magic, bcast & unicast wakeup sources */ 1910 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1911 if (ret < 0) { 1912 netdev_warn(dev->net, "Error reading WUCSR\n"); 1913 goto done; 1914 } 1915 1916 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1917 1918 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1919 if (ret < 0) { 1920 netdev_warn(dev->net, "Error writing WUCSR\n"); 1921 goto done; 1922 } 1923 1924 if (pdata->wolopts & WAKE_PHY) { 1925 netdev_info(dev->net, "enabling PHY wakeup\n"); 1926 1927 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1928 if (ret < 0) { 1929 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1930 goto done; 1931 } 1932 1933 /* clear wol status, enable energy detection */ 1934 val &= ~PMT_CTL_WUPS; 1935 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1936 1937 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1938 if (ret < 0) { 1939 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1940 goto done; 1941 } 1942 } 1943 1944 if (pdata->wolopts & WAKE_MAGIC) { 1945 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1946 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1947 if (ret < 0) { 1948 netdev_warn(dev->net, "Error reading WUCSR\n"); 1949 goto done; 1950 } 1951 1952 /* clear any pending magic packet status */ 1953 val |= WUCSR_MPR | WUCSR_MPEN; 1954 1955 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1956 if (ret < 0) { 1957 netdev_warn(dev->net, "Error writing WUCSR\n"); 1958 goto done; 1959 } 1960 } 1961 1962 if (pdata->wolopts & WAKE_BCAST) { 1963 netdev_info(dev->net, "enabling broadcast detection\n"); 1964 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1965 if (ret < 0) { 1966 netdev_warn(dev->net, "Error reading WUCSR\n"); 1967 goto done; 1968 } 1969 1970 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1971 1972 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1973 if (ret < 0) { 1974 netdev_warn(dev->net, "Error writing WUCSR\n"); 1975 goto done; 1976 } 1977 } 1978 1979 if (pdata->wolopts & WAKE_UCAST) { 1980 netdev_info(dev->net, "enabling unicast detection\n"); 1981 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1982 if (ret < 0) { 1983 netdev_warn(dev->net, "Error reading WUCSR\n"); 1984 goto done; 1985 } 1986 1987 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1988 1989 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1990 if (ret < 0) { 1991 netdev_warn(dev->net, "Error writing WUCSR\n"); 1992 goto done; 1993 } 1994 } 1995 1996 /* enable receiver to enable frame reception */ 1997 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 1998 if (ret < 0) { 1999 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2000 goto done; 2001 } 2002 2003 val |= MAC_RX_RXEN; 2004 2005 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2006 if (ret < 0) { 2007 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2008 goto done; 2009 } 2010 2011 /* some wol options are enabled, so enter SUSPEND0 */ 2012 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2013 ret = smsc75xx_enter_suspend0(dev); 2014 2015 done: 2016 if (ret) 2017 usbnet_resume(intf); 2018 return ret; 2019 } 2020 2021 static int smsc75xx_resume(struct usb_interface *intf) 2022 { 2023 struct usbnet *dev = usb_get_intfdata(intf); 2024 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2025 u8 suspend_flags = pdata->suspend_flags; 2026 int ret; 2027 u32 val; 2028 2029 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2030 2031 /* do this first to ensure it's cleared even in error case */ 2032 pdata->suspend_flags = 0; 2033 2034 if (suspend_flags & SUSPEND_ALLMODES) { 2035 /* Disable wakeup sources */ 2036 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2037 if (ret < 0) { 2038 netdev_warn(dev->net, "Error reading WUCSR\n"); 2039 return ret; 2040 } 2041 2042 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2043 | WUCSR_BCST_EN); 2044 2045 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2046 if (ret < 0) { 2047 netdev_warn(dev->net, "Error writing WUCSR\n"); 2048 return ret; 2049 } 2050 2051 /* clear wake-up status */ 2052 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2053 if (ret < 0) { 2054 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2055 return ret; 2056 } 2057 2058 val &= ~PMT_CTL_WOL_EN; 2059 val |= PMT_CTL_WUPS; 2060 2061 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2062 if (ret < 0) { 2063 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2064 return ret; 2065 } 2066 } 2067 2068 if (suspend_flags & SUSPEND_SUSPEND2) { 2069 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2070 2071 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2072 if (ret < 0) { 2073 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2074 return ret; 2075 } 2076 2077 val |= PMT_CTL_PHY_PWRUP; 2078 2079 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2080 if (ret < 0) { 2081 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2082 return ret; 2083 } 2084 } 2085 2086 ret = smsc75xx_wait_ready(dev, 1); 2087 if (ret < 0) { 2088 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2089 return ret; 2090 } 2091 2092 return usbnet_resume(intf); 2093 } 2094 2095 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2096 u32 rx_cmd_a, u32 rx_cmd_b) 2097 { 2098 if (!(dev->net->features & NETIF_F_RXCSUM) || 2099 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2100 skb->ip_summed = CHECKSUM_NONE; 2101 } else { 2102 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2103 skb->ip_summed = CHECKSUM_COMPLETE; 2104 } 2105 } 2106 2107 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2108 { 2109 while (skb->len > 0) { 2110 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2111 struct sk_buff *ax_skb; 2112 unsigned char *packet; 2113 2114 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2115 le32_to_cpus(&rx_cmd_a); 2116 skb_pull(skb, 4); 2117 2118 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2119 le32_to_cpus(&rx_cmd_b); 2120 skb_pull(skb, 4 + RXW_PADDING); 2121 2122 packet = skb->data; 2123 2124 /* get the packet length */ 2125 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2126 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2127 2128 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2129 netif_dbg(dev, rx_err, dev->net, 2130 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2131 dev->net->stats.rx_errors++; 2132 dev->net->stats.rx_dropped++; 2133 2134 if (rx_cmd_a & RX_CMD_A_FCS) 2135 dev->net->stats.rx_crc_errors++; 2136 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2137 dev->net->stats.rx_frame_errors++; 2138 } else { 2139 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ 2140 if (unlikely(size > (ETH_FRAME_LEN + 12))) { 2141 netif_dbg(dev, rx_err, dev->net, 2142 "size err rx_cmd_a=0x%08x\n", 2143 rx_cmd_a); 2144 return 0; 2145 } 2146 2147 /* last frame in this batch */ 2148 if (skb->len == size) { 2149 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2150 rx_cmd_b); 2151 2152 skb_trim(skb, skb->len - 4); /* remove fcs */ 2153 skb->truesize = size + sizeof(struct sk_buff); 2154 2155 return 1; 2156 } 2157 2158 ax_skb = skb_clone(skb, GFP_ATOMIC); 2159 if (unlikely(!ax_skb)) { 2160 netdev_warn(dev->net, "Error allocating skb\n"); 2161 return 0; 2162 } 2163 2164 ax_skb->len = size; 2165 ax_skb->data = packet; 2166 skb_set_tail_pointer(ax_skb, size); 2167 2168 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2169 rx_cmd_b); 2170 2171 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2172 ax_skb->truesize = size + sizeof(struct sk_buff); 2173 2174 usbnet_skb_return(dev, ax_skb); 2175 } 2176 2177 skb_pull(skb, size); 2178 2179 /* padding bytes before the next frame starts */ 2180 if (skb->len) 2181 skb_pull(skb, align_count); 2182 } 2183 2184 if (unlikely(skb->len < 0)) { 2185 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); 2186 return 0; 2187 } 2188 2189 return 1; 2190 } 2191 2192 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2193 struct sk_buff *skb, gfp_t flags) 2194 { 2195 u32 tx_cmd_a, tx_cmd_b; 2196 2197 skb_linearize(skb); 2198 2199 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2200 struct sk_buff *skb2 = 2201 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2202 dev_kfree_skb_any(skb); 2203 skb = skb2; 2204 if (!skb) 2205 return NULL; 2206 } 2207 2208 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2209 2210 if (skb->ip_summed == CHECKSUM_PARTIAL) 2211 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2212 2213 if (skb_is_gso(skb)) { 2214 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2215 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2216 2217 tx_cmd_a |= TX_CMD_A_LSO; 2218 } else { 2219 tx_cmd_b = 0; 2220 } 2221 2222 skb_push(skb, 4); 2223 cpu_to_le32s(&tx_cmd_b); 2224 memcpy(skb->data, &tx_cmd_b, 4); 2225 2226 skb_push(skb, 4); 2227 cpu_to_le32s(&tx_cmd_a); 2228 memcpy(skb->data, &tx_cmd_a, 4); 2229 2230 return skb; 2231 } 2232 2233 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2234 { 2235 dev->intf->needs_remote_wakeup = on; 2236 return 0; 2237 } 2238 2239 static const struct driver_info smsc75xx_info = { 2240 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2241 .bind = smsc75xx_bind, 2242 .unbind = smsc75xx_unbind, 2243 .link_reset = smsc75xx_link_reset, 2244 .reset = smsc75xx_reset, 2245 .rx_fixup = smsc75xx_rx_fixup, 2246 .tx_fixup = smsc75xx_tx_fixup, 2247 .status = smsc75xx_status, 2248 .manage_power = smsc75xx_manage_power, 2249 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2250 }; 2251 2252 static const struct usb_device_id products[] = { 2253 { 2254 /* SMSC7500 USB Gigabit Ethernet Device */ 2255 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2256 .driver_info = (unsigned long) &smsc75xx_info, 2257 }, 2258 { 2259 /* SMSC7500 USB Gigabit Ethernet Device */ 2260 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2261 .driver_info = (unsigned long) &smsc75xx_info, 2262 }, 2263 { }, /* END */ 2264 }; 2265 MODULE_DEVICE_TABLE(usb, products); 2266 2267 static struct usb_driver smsc75xx_driver = { 2268 .name = SMSC_CHIPNAME, 2269 .id_table = products, 2270 .probe = usbnet_probe, 2271 .suspend = smsc75xx_suspend, 2272 .resume = smsc75xx_resume, 2273 .reset_resume = smsc75xx_resume, 2274 .disconnect = usbnet_disconnect, 2275 .disable_hub_initiated_lpm = 1, 2276 .supports_autosuspend = 1, 2277 }; 2278 2279 module_usb_driver(smsc75xx_driver); 2280 2281 MODULE_AUTHOR("Nancy Lin"); 2282 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2283 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2284 MODULE_LICENSE("GPL"); 2285