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 int ret; 918 919 if (new_mtu > MAX_SINGLE_PACKET_SIZE) 920 return -EINVAL; 921 922 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 923 if (ret < 0) { 924 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 925 return ret; 926 } 927 928 return usbnet_change_mtu(netdev, new_mtu); 929 } 930 931 /* Enable or disable Rx checksum offload engine */ 932 static int smsc75xx_set_features(struct net_device *netdev, 933 netdev_features_t features) 934 { 935 struct usbnet *dev = netdev_priv(netdev); 936 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 937 unsigned long flags; 938 int ret; 939 940 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 941 942 if (features & NETIF_F_RXCSUM) 943 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 944 else 945 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 946 947 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 948 /* it's racing here! */ 949 950 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 951 if (ret < 0) 952 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 953 954 return ret; 955 } 956 957 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 958 { 959 int timeout = 0; 960 961 do { 962 u32 buf; 963 int ret; 964 965 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 966 967 if (ret < 0) { 968 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 969 return ret; 970 } 971 972 if (buf & PMT_CTL_DEV_RDY) 973 return 0; 974 975 msleep(10); 976 timeout++; 977 } while (timeout < 100); 978 979 netdev_warn(dev->net, "timeout waiting for device ready\n"); 980 return -EIO; 981 } 982 983 static int smsc75xx_reset(struct usbnet *dev) 984 { 985 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 986 u32 buf; 987 int ret = 0, timeout; 988 989 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 990 991 ret = smsc75xx_wait_ready(dev, 0); 992 if (ret < 0) { 993 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 994 return ret; 995 } 996 997 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 998 if (ret < 0) { 999 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1000 return ret; 1001 } 1002 1003 buf |= HW_CFG_LRST; 1004 1005 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1006 if (ret < 0) { 1007 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1008 return ret; 1009 } 1010 1011 timeout = 0; 1012 do { 1013 msleep(10); 1014 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1015 if (ret < 0) { 1016 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1017 return ret; 1018 } 1019 timeout++; 1020 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1021 1022 if (timeout >= 100) { 1023 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1024 return -EIO; 1025 } 1026 1027 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1028 1029 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1030 if (ret < 0) { 1031 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1032 return ret; 1033 } 1034 1035 buf |= PMT_CTL_PHY_RST; 1036 1037 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1038 if (ret < 0) { 1039 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1040 return ret; 1041 } 1042 1043 timeout = 0; 1044 do { 1045 msleep(10); 1046 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1047 if (ret < 0) { 1048 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1049 return ret; 1050 } 1051 timeout++; 1052 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1053 1054 if (timeout >= 100) { 1055 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1056 return -EIO; 1057 } 1058 1059 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1060 1061 ret = smsc75xx_set_mac_address(dev); 1062 if (ret < 0) { 1063 netdev_warn(dev->net, "Failed to set mac address\n"); 1064 return ret; 1065 } 1066 1067 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1068 dev->net->dev_addr); 1069 1070 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1071 if (ret < 0) { 1072 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1073 return ret; 1074 } 1075 1076 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1077 buf); 1078 1079 buf |= HW_CFG_BIR; 1080 1081 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1082 if (ret < 0) { 1083 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1084 return ret; 1085 } 1086 1087 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1088 if (ret < 0) { 1089 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1090 return ret; 1091 } 1092 1093 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1094 buf); 1095 1096 if (!turbo_mode) { 1097 buf = 0; 1098 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1099 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1100 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1101 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1102 } else { 1103 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1104 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1105 } 1106 1107 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1108 (ulong)dev->rx_urb_size); 1109 1110 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1111 if (ret < 0) { 1112 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1113 return ret; 1114 } 1115 1116 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1117 if (ret < 0) { 1118 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1119 return ret; 1120 } 1121 1122 netif_dbg(dev, ifup, dev->net, 1123 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1124 1125 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1126 if (ret < 0) { 1127 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1128 return ret; 1129 } 1130 1131 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1132 if (ret < 0) { 1133 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1134 return ret; 1135 } 1136 1137 netif_dbg(dev, ifup, dev->net, 1138 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1139 1140 if (turbo_mode) { 1141 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1142 if (ret < 0) { 1143 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1144 return ret; 1145 } 1146 1147 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1148 1149 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1150 1151 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1152 if (ret < 0) { 1153 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1154 return ret; 1155 } 1156 1157 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1158 if (ret < 0) { 1159 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1160 return ret; 1161 } 1162 1163 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1164 } 1165 1166 /* set FIFO sizes */ 1167 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1168 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1169 if (ret < 0) { 1170 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1171 return ret; 1172 } 1173 1174 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1175 1176 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1177 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1178 if (ret < 0) { 1179 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1180 return ret; 1181 } 1182 1183 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1184 1185 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1186 if (ret < 0) { 1187 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1188 return ret; 1189 } 1190 1191 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1192 if (ret < 0) { 1193 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1194 return ret; 1195 } 1196 1197 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1198 1199 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1200 if (ret < 0) { 1201 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1202 return ret; 1203 } 1204 1205 /* only set default GPIO/LED settings if no EEPROM is detected */ 1206 if (!(buf & E2P_CMD_LOADED)) { 1207 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1208 if (ret < 0) { 1209 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1210 return ret; 1211 } 1212 1213 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1214 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1215 1216 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1217 if (ret < 0) { 1218 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1219 return ret; 1220 } 1221 } 1222 1223 ret = smsc75xx_write_reg(dev, FLOW, 0); 1224 if (ret < 0) { 1225 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1226 return ret; 1227 } 1228 1229 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1230 if (ret < 0) { 1231 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1232 return ret; 1233 } 1234 1235 /* Don't need rfe_ctl_lock during initialisation */ 1236 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1237 if (ret < 0) { 1238 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1239 return ret; 1240 } 1241 1242 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1243 1244 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1245 if (ret < 0) { 1246 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1247 return ret; 1248 } 1249 1250 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1251 if (ret < 0) { 1252 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1253 return ret; 1254 } 1255 1256 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1257 pdata->rfe_ctl); 1258 1259 /* Enable or disable checksum offload engines */ 1260 smsc75xx_set_features(dev->net, dev->net->features); 1261 1262 smsc75xx_set_multicast(dev->net); 1263 1264 ret = smsc75xx_phy_initialize(dev); 1265 if (ret < 0) { 1266 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1267 return ret; 1268 } 1269 1270 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1271 if (ret < 0) { 1272 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1273 return ret; 1274 } 1275 1276 /* enable PHY interrupts */ 1277 buf |= INT_ENP_PHY_INT; 1278 1279 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1280 if (ret < 0) { 1281 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1282 return ret; 1283 } 1284 1285 /* allow mac to detect speed and duplex from phy */ 1286 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1287 if (ret < 0) { 1288 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1289 return ret; 1290 } 1291 1292 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1293 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1294 if (ret < 0) { 1295 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1296 return ret; 1297 } 1298 1299 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1300 if (ret < 0) { 1301 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1302 return ret; 1303 } 1304 1305 buf |= MAC_TX_TXEN; 1306 1307 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1308 if (ret < 0) { 1309 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1310 return ret; 1311 } 1312 1313 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1314 1315 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1316 if (ret < 0) { 1317 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1318 return ret; 1319 } 1320 1321 buf |= FCT_TX_CTL_EN; 1322 1323 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1324 if (ret < 0) { 1325 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1326 return ret; 1327 } 1328 1329 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1330 1331 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1332 if (ret < 0) { 1333 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1334 return ret; 1335 } 1336 1337 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1338 if (ret < 0) { 1339 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1340 return ret; 1341 } 1342 1343 buf |= MAC_RX_RXEN; 1344 1345 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1346 if (ret < 0) { 1347 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1348 return ret; 1349 } 1350 1351 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1352 1353 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1354 if (ret < 0) { 1355 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1356 return ret; 1357 } 1358 1359 buf |= FCT_RX_CTL_EN; 1360 1361 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1362 if (ret < 0) { 1363 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1364 return ret; 1365 } 1366 1367 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1368 1369 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1370 return 0; 1371 } 1372 1373 static const struct net_device_ops smsc75xx_netdev_ops = { 1374 .ndo_open = usbnet_open, 1375 .ndo_stop = usbnet_stop, 1376 .ndo_start_xmit = usbnet_start_xmit, 1377 .ndo_tx_timeout = usbnet_tx_timeout, 1378 .ndo_change_mtu = smsc75xx_change_mtu, 1379 .ndo_set_mac_address = eth_mac_addr, 1380 .ndo_validate_addr = eth_validate_addr, 1381 .ndo_do_ioctl = smsc75xx_ioctl, 1382 .ndo_set_rx_mode = smsc75xx_set_multicast, 1383 .ndo_set_features = smsc75xx_set_features, 1384 }; 1385 1386 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1387 { 1388 struct smsc75xx_priv *pdata = NULL; 1389 int ret; 1390 1391 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1392 1393 ret = usbnet_get_endpoints(dev, intf); 1394 if (ret < 0) { 1395 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1396 return ret; 1397 } 1398 1399 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1400 GFP_KERNEL); 1401 1402 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1403 if (!pdata) 1404 return -ENOMEM; 1405 1406 pdata->dev = dev; 1407 1408 spin_lock_init(&pdata->rfe_ctl_lock); 1409 mutex_init(&pdata->dataport_mutex); 1410 1411 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1412 1413 if (DEFAULT_TX_CSUM_ENABLE) { 1414 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1415 if (DEFAULT_TSO_ENABLE) 1416 dev->net->features |= NETIF_F_SG | 1417 NETIF_F_TSO | NETIF_F_TSO6; 1418 } 1419 if (DEFAULT_RX_CSUM_ENABLE) 1420 dev->net->features |= NETIF_F_RXCSUM; 1421 1422 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1423 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_RXCSUM; 1424 1425 ret = smsc75xx_wait_ready(dev, 0); 1426 if (ret < 0) { 1427 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1428 return ret; 1429 } 1430 1431 smsc75xx_init_mac_address(dev); 1432 1433 /* Init all registers */ 1434 ret = smsc75xx_reset(dev); 1435 if (ret < 0) { 1436 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1437 return ret; 1438 } 1439 1440 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1441 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1442 dev->net->flags |= IFF_MULTICAST; 1443 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1444 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1445 return 0; 1446 } 1447 1448 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1449 { 1450 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1451 if (pdata) { 1452 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1453 kfree(pdata); 1454 pdata = NULL; 1455 dev->data[0] = 0; 1456 } 1457 } 1458 1459 static u16 smsc_crc(const u8 *buffer, size_t len) 1460 { 1461 return bitrev16(crc16(0xFFFF, buffer, len)); 1462 } 1463 1464 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1465 u32 wuf_mask1) 1466 { 1467 int cfg_base = WUF_CFGX + filter * 4; 1468 int mask_base = WUF_MASKX + filter * 16; 1469 int ret; 1470 1471 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1472 if (ret < 0) { 1473 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1474 return ret; 1475 } 1476 1477 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1478 if (ret < 0) { 1479 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1480 return ret; 1481 } 1482 1483 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1484 if (ret < 0) { 1485 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1486 return ret; 1487 } 1488 1489 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1490 if (ret < 0) { 1491 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1492 return ret; 1493 } 1494 1495 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1496 if (ret < 0) { 1497 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1498 return ret; 1499 } 1500 1501 return 0; 1502 } 1503 1504 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1505 { 1506 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1507 u32 val; 1508 int ret; 1509 1510 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1511 if (ret < 0) { 1512 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1513 return ret; 1514 } 1515 1516 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1517 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1518 1519 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1520 if (ret < 0) { 1521 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1522 return ret; 1523 } 1524 1525 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1526 1527 return 0; 1528 } 1529 1530 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1531 { 1532 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1533 u32 val; 1534 int ret; 1535 1536 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1537 if (ret < 0) { 1538 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1539 return ret; 1540 } 1541 1542 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1543 val |= PMT_CTL_SUS_MODE_1; 1544 1545 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1546 if (ret < 0) { 1547 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1548 return ret; 1549 } 1550 1551 /* clear wol status, enable energy detection */ 1552 val &= ~PMT_CTL_WUPS; 1553 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1554 1555 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1556 if (ret < 0) { 1557 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1558 return ret; 1559 } 1560 1561 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1562 1563 return 0; 1564 } 1565 1566 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1567 { 1568 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1569 u32 val; 1570 int ret; 1571 1572 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1573 if (ret < 0) { 1574 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1575 return ret; 1576 } 1577 1578 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1579 val |= PMT_CTL_SUS_MODE_2; 1580 1581 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1582 if (ret < 0) { 1583 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1584 return ret; 1585 } 1586 1587 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1588 1589 return 0; 1590 } 1591 1592 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1593 { 1594 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1595 u32 val; 1596 int ret; 1597 1598 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1599 if (ret < 0) { 1600 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1601 return ret; 1602 } 1603 1604 if (val & FCT_RX_CTL_RXUSED) { 1605 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1606 return -EBUSY; 1607 } 1608 1609 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1610 if (ret < 0) { 1611 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1612 return ret; 1613 } 1614 1615 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1616 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1617 1618 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1619 if (ret < 0) { 1620 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1621 return ret; 1622 } 1623 1624 /* clear wol status */ 1625 val &= ~PMT_CTL_WUPS; 1626 val |= PMT_CTL_WUPS_WOL; 1627 1628 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1629 if (ret < 0) { 1630 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1631 return ret; 1632 } 1633 1634 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1635 1636 return 0; 1637 } 1638 1639 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1640 { 1641 struct mii_if_info *mii = &dev->mii; 1642 int ret; 1643 1644 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1645 1646 /* read to clear */ 1647 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1648 if (ret < 0) { 1649 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1650 return ret; 1651 } 1652 1653 /* enable interrupt source */ 1654 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1655 if (ret < 0) { 1656 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1657 return ret; 1658 } 1659 1660 ret |= mask; 1661 1662 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1663 1664 return 0; 1665 } 1666 1667 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1668 { 1669 struct mii_if_info *mii = &dev->mii; 1670 int ret; 1671 1672 /* first, a dummy read, needed to latch some MII phys */ 1673 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1674 if (ret < 0) { 1675 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1676 return ret; 1677 } 1678 1679 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1680 if (ret < 0) { 1681 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1682 return ret; 1683 } 1684 1685 return !!(ret & BMSR_LSTATUS); 1686 } 1687 1688 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1689 { 1690 int ret; 1691 1692 if (!netif_running(dev->net)) { 1693 /* interface is ifconfig down so fully power down hw */ 1694 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1695 return smsc75xx_enter_suspend2(dev); 1696 } 1697 1698 if (!link_up) { 1699 /* link is down so enter EDPD mode */ 1700 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1701 1702 /* enable PHY wakeup events for if cable is attached */ 1703 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1704 PHY_INT_MASK_ANEG_COMP); 1705 if (ret < 0) { 1706 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1707 return ret; 1708 } 1709 1710 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1711 return smsc75xx_enter_suspend1(dev); 1712 } 1713 1714 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1715 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1716 PHY_INT_MASK_LINK_DOWN); 1717 if (ret < 0) { 1718 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1719 return ret; 1720 } 1721 1722 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1723 return smsc75xx_enter_suspend3(dev); 1724 } 1725 1726 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1727 { 1728 struct usbnet *dev = usb_get_intfdata(intf); 1729 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1730 u32 val, link_up; 1731 int ret; 1732 1733 ret = usbnet_suspend(intf, message); 1734 if (ret < 0) { 1735 netdev_warn(dev->net, "usbnet_suspend error\n"); 1736 return ret; 1737 } 1738 1739 if (pdata->suspend_flags) { 1740 netdev_warn(dev->net, "error during last resume\n"); 1741 pdata->suspend_flags = 0; 1742 } 1743 1744 /* determine if link is up using only _nopm functions */ 1745 link_up = smsc75xx_link_ok_nopm(dev); 1746 1747 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1748 ret = smsc75xx_autosuspend(dev, link_up); 1749 goto done; 1750 } 1751 1752 /* if we get this far we're not autosuspending */ 1753 /* if no wol options set, or if link is down and we're not waking on 1754 * PHY activity, enter lowest power SUSPEND2 mode 1755 */ 1756 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1757 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1758 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1759 1760 /* disable energy detect (link up) & wake up events */ 1761 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1762 if (ret < 0) { 1763 netdev_warn(dev->net, "Error reading WUCSR\n"); 1764 goto done; 1765 } 1766 1767 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1768 1769 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1770 if (ret < 0) { 1771 netdev_warn(dev->net, "Error writing WUCSR\n"); 1772 goto done; 1773 } 1774 1775 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1776 if (ret < 0) { 1777 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1778 goto done; 1779 } 1780 1781 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1782 1783 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1784 if (ret < 0) { 1785 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1786 goto done; 1787 } 1788 1789 ret = smsc75xx_enter_suspend2(dev); 1790 goto done; 1791 } 1792 1793 if (pdata->wolopts & WAKE_PHY) { 1794 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1795 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1796 if (ret < 0) { 1797 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1798 goto done; 1799 } 1800 1801 /* if link is down then configure EDPD and enter SUSPEND1, 1802 * otherwise enter SUSPEND0 below 1803 */ 1804 if (!link_up) { 1805 struct mii_if_info *mii = &dev->mii; 1806 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1807 1808 /* enable energy detect power-down mode */ 1809 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1810 PHY_MODE_CTRL_STS); 1811 if (ret < 0) { 1812 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1813 goto done; 1814 } 1815 1816 ret |= MODE_CTRL_STS_EDPWRDOWN; 1817 1818 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1819 PHY_MODE_CTRL_STS, ret); 1820 1821 /* enter SUSPEND1 mode */ 1822 ret = smsc75xx_enter_suspend1(dev); 1823 goto done; 1824 } 1825 } 1826 1827 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1828 int i, filter = 0; 1829 1830 /* disable all filters */ 1831 for (i = 0; i < WUF_NUM; i++) { 1832 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1833 if (ret < 0) { 1834 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1835 goto done; 1836 } 1837 } 1838 1839 if (pdata->wolopts & WAKE_MCAST) { 1840 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1841 netdev_info(dev->net, "enabling multicast detection\n"); 1842 1843 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1844 | smsc_crc(mcast, 3); 1845 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1846 if (ret < 0) { 1847 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1848 goto done; 1849 } 1850 } 1851 1852 if (pdata->wolopts & WAKE_ARP) { 1853 const u8 arp[] = {0x08, 0x06}; 1854 netdev_info(dev->net, "enabling ARP detection\n"); 1855 1856 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1857 | smsc_crc(arp, 2); 1858 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1859 if (ret < 0) { 1860 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1861 goto done; 1862 } 1863 } 1864 1865 /* clear any pending pattern match packet status */ 1866 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1867 if (ret < 0) { 1868 netdev_warn(dev->net, "Error reading WUCSR\n"); 1869 goto done; 1870 } 1871 1872 val |= WUCSR_WUFR; 1873 1874 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1875 if (ret < 0) { 1876 netdev_warn(dev->net, "Error writing WUCSR\n"); 1877 goto done; 1878 } 1879 1880 netdev_info(dev->net, "enabling packet match detection\n"); 1881 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1882 if (ret < 0) { 1883 netdev_warn(dev->net, "Error reading WUCSR\n"); 1884 goto done; 1885 } 1886 1887 val |= WUCSR_WUEN; 1888 1889 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1890 if (ret < 0) { 1891 netdev_warn(dev->net, "Error writing WUCSR\n"); 1892 goto done; 1893 } 1894 } else { 1895 netdev_info(dev->net, "disabling packet match detection\n"); 1896 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1897 if (ret < 0) { 1898 netdev_warn(dev->net, "Error reading WUCSR\n"); 1899 goto done; 1900 } 1901 1902 val &= ~WUCSR_WUEN; 1903 1904 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1905 if (ret < 0) { 1906 netdev_warn(dev->net, "Error writing WUCSR\n"); 1907 goto done; 1908 } 1909 } 1910 1911 /* disable magic, bcast & unicast wakeup sources */ 1912 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1913 if (ret < 0) { 1914 netdev_warn(dev->net, "Error reading WUCSR\n"); 1915 goto done; 1916 } 1917 1918 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1919 1920 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1921 if (ret < 0) { 1922 netdev_warn(dev->net, "Error writing WUCSR\n"); 1923 goto done; 1924 } 1925 1926 if (pdata->wolopts & WAKE_PHY) { 1927 netdev_info(dev->net, "enabling PHY wakeup\n"); 1928 1929 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1930 if (ret < 0) { 1931 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1932 goto done; 1933 } 1934 1935 /* clear wol status, enable energy detection */ 1936 val &= ~PMT_CTL_WUPS; 1937 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1938 1939 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1940 if (ret < 0) { 1941 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1942 goto done; 1943 } 1944 } 1945 1946 if (pdata->wolopts & WAKE_MAGIC) { 1947 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1948 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1949 if (ret < 0) { 1950 netdev_warn(dev->net, "Error reading WUCSR\n"); 1951 goto done; 1952 } 1953 1954 /* clear any pending magic packet status */ 1955 val |= WUCSR_MPR | WUCSR_MPEN; 1956 1957 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1958 if (ret < 0) { 1959 netdev_warn(dev->net, "Error writing WUCSR\n"); 1960 goto done; 1961 } 1962 } 1963 1964 if (pdata->wolopts & WAKE_BCAST) { 1965 netdev_info(dev->net, "enabling broadcast detection\n"); 1966 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1967 if (ret < 0) { 1968 netdev_warn(dev->net, "Error reading WUCSR\n"); 1969 goto done; 1970 } 1971 1972 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1973 1974 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1975 if (ret < 0) { 1976 netdev_warn(dev->net, "Error writing WUCSR\n"); 1977 goto done; 1978 } 1979 } 1980 1981 if (pdata->wolopts & WAKE_UCAST) { 1982 netdev_info(dev->net, "enabling unicast detection\n"); 1983 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1984 if (ret < 0) { 1985 netdev_warn(dev->net, "Error reading WUCSR\n"); 1986 goto done; 1987 } 1988 1989 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1990 1991 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1992 if (ret < 0) { 1993 netdev_warn(dev->net, "Error writing WUCSR\n"); 1994 goto done; 1995 } 1996 } 1997 1998 /* enable receiver to enable frame reception */ 1999 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2000 if (ret < 0) { 2001 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2002 goto done; 2003 } 2004 2005 val |= MAC_RX_RXEN; 2006 2007 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2008 if (ret < 0) { 2009 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2010 goto done; 2011 } 2012 2013 /* some wol options are enabled, so enter SUSPEND0 */ 2014 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2015 ret = smsc75xx_enter_suspend0(dev); 2016 2017 done: 2018 /* 2019 * TODO: resume() might need to handle the suspend failure 2020 * in system sleep 2021 */ 2022 if (ret && PMSG_IS_AUTO(message)) 2023 usbnet_resume(intf); 2024 return ret; 2025 } 2026 2027 static int smsc75xx_resume(struct usb_interface *intf) 2028 { 2029 struct usbnet *dev = usb_get_intfdata(intf); 2030 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2031 u8 suspend_flags = pdata->suspend_flags; 2032 int ret; 2033 u32 val; 2034 2035 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2036 2037 /* do this first to ensure it's cleared even in error case */ 2038 pdata->suspend_flags = 0; 2039 2040 if (suspend_flags & SUSPEND_ALLMODES) { 2041 /* Disable wakeup sources */ 2042 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2043 if (ret < 0) { 2044 netdev_warn(dev->net, "Error reading WUCSR\n"); 2045 return ret; 2046 } 2047 2048 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2049 | WUCSR_BCST_EN); 2050 2051 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2052 if (ret < 0) { 2053 netdev_warn(dev->net, "Error writing WUCSR\n"); 2054 return ret; 2055 } 2056 2057 /* clear wake-up status */ 2058 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2059 if (ret < 0) { 2060 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2061 return ret; 2062 } 2063 2064 val &= ~PMT_CTL_WOL_EN; 2065 val |= PMT_CTL_WUPS; 2066 2067 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2068 if (ret < 0) { 2069 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2070 return ret; 2071 } 2072 } 2073 2074 if (suspend_flags & SUSPEND_SUSPEND2) { 2075 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2076 2077 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2078 if (ret < 0) { 2079 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2080 return ret; 2081 } 2082 2083 val |= PMT_CTL_PHY_PWRUP; 2084 2085 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2086 if (ret < 0) { 2087 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2088 return ret; 2089 } 2090 } 2091 2092 ret = smsc75xx_wait_ready(dev, 1); 2093 if (ret < 0) { 2094 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2095 return ret; 2096 } 2097 2098 return usbnet_resume(intf); 2099 } 2100 2101 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2102 u32 rx_cmd_a, u32 rx_cmd_b) 2103 { 2104 if (!(dev->net->features & NETIF_F_RXCSUM) || 2105 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2106 skb->ip_summed = CHECKSUM_NONE; 2107 } else { 2108 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2109 skb->ip_summed = CHECKSUM_COMPLETE; 2110 } 2111 } 2112 2113 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2114 { 2115 while (skb->len > 0) { 2116 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2117 struct sk_buff *ax_skb; 2118 unsigned char *packet; 2119 2120 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2121 le32_to_cpus(&rx_cmd_a); 2122 skb_pull(skb, 4); 2123 2124 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2125 le32_to_cpus(&rx_cmd_b); 2126 skb_pull(skb, 4 + RXW_PADDING); 2127 2128 packet = skb->data; 2129 2130 /* get the packet length */ 2131 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2132 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2133 2134 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2135 netif_dbg(dev, rx_err, dev->net, 2136 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2137 dev->net->stats.rx_errors++; 2138 dev->net->stats.rx_dropped++; 2139 2140 if (rx_cmd_a & RX_CMD_A_FCS) 2141 dev->net->stats.rx_crc_errors++; 2142 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2143 dev->net->stats.rx_frame_errors++; 2144 } else { 2145 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2146 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2147 netif_dbg(dev, rx_err, dev->net, 2148 "size err rx_cmd_a=0x%08x\n", 2149 rx_cmd_a); 2150 return 0; 2151 } 2152 2153 /* last frame in this batch */ 2154 if (skb->len == size) { 2155 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2156 rx_cmd_b); 2157 2158 skb_trim(skb, skb->len - 4); /* remove fcs */ 2159 skb->truesize = size + sizeof(struct sk_buff); 2160 2161 return 1; 2162 } 2163 2164 ax_skb = skb_clone(skb, GFP_ATOMIC); 2165 if (unlikely(!ax_skb)) { 2166 netdev_warn(dev->net, "Error allocating skb\n"); 2167 return 0; 2168 } 2169 2170 ax_skb->len = size; 2171 ax_skb->data = packet; 2172 skb_set_tail_pointer(ax_skb, size); 2173 2174 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2175 rx_cmd_b); 2176 2177 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2178 ax_skb->truesize = size + sizeof(struct sk_buff); 2179 2180 usbnet_skb_return(dev, ax_skb); 2181 } 2182 2183 skb_pull(skb, size); 2184 2185 /* padding bytes before the next frame starts */ 2186 if (skb->len) 2187 skb_pull(skb, align_count); 2188 } 2189 2190 if (unlikely(skb->len < 0)) { 2191 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); 2192 return 0; 2193 } 2194 2195 return 1; 2196 } 2197 2198 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2199 struct sk_buff *skb, gfp_t flags) 2200 { 2201 u32 tx_cmd_a, tx_cmd_b; 2202 2203 skb_linearize(skb); 2204 2205 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2206 struct sk_buff *skb2 = 2207 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2208 dev_kfree_skb_any(skb); 2209 skb = skb2; 2210 if (!skb) 2211 return NULL; 2212 } 2213 2214 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2215 2216 if (skb->ip_summed == CHECKSUM_PARTIAL) 2217 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2218 2219 if (skb_is_gso(skb)) { 2220 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2221 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2222 2223 tx_cmd_a |= TX_CMD_A_LSO; 2224 } else { 2225 tx_cmd_b = 0; 2226 } 2227 2228 skb_push(skb, 4); 2229 cpu_to_le32s(&tx_cmd_b); 2230 memcpy(skb->data, &tx_cmd_b, 4); 2231 2232 skb_push(skb, 4); 2233 cpu_to_le32s(&tx_cmd_a); 2234 memcpy(skb->data, &tx_cmd_a, 4); 2235 2236 return skb; 2237 } 2238 2239 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2240 { 2241 dev->intf->needs_remote_wakeup = on; 2242 return 0; 2243 } 2244 2245 static const struct driver_info smsc75xx_info = { 2246 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2247 .bind = smsc75xx_bind, 2248 .unbind = smsc75xx_unbind, 2249 .link_reset = smsc75xx_link_reset, 2250 .reset = smsc75xx_reset, 2251 .rx_fixup = smsc75xx_rx_fixup, 2252 .tx_fixup = smsc75xx_tx_fixup, 2253 .status = smsc75xx_status, 2254 .manage_power = smsc75xx_manage_power, 2255 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2256 }; 2257 2258 static const struct usb_device_id products[] = { 2259 { 2260 /* SMSC7500 USB Gigabit Ethernet Device */ 2261 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2262 .driver_info = (unsigned long) &smsc75xx_info, 2263 }, 2264 { 2265 /* SMSC7500 USB Gigabit Ethernet Device */ 2266 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2267 .driver_info = (unsigned long) &smsc75xx_info, 2268 }, 2269 { }, /* END */ 2270 }; 2271 MODULE_DEVICE_TABLE(usb, products); 2272 2273 static struct usb_driver smsc75xx_driver = { 2274 .name = SMSC_CHIPNAME, 2275 .id_table = products, 2276 .probe = usbnet_probe, 2277 .suspend = smsc75xx_suspend, 2278 .resume = smsc75xx_resume, 2279 .reset_resume = smsc75xx_resume, 2280 .disconnect = usbnet_disconnect, 2281 .disable_hub_initiated_lpm = 1, 2282 .supports_autosuspend = 1, 2283 }; 2284 2285 module_usb_driver(smsc75xx_driver); 2286 2287 MODULE_AUTHOR("Nancy Lin"); 2288 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2289 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2290 MODULE_LICENSE("GPL"); 2291