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, see <http://www.gnu.org/licenses/>. 17 * 18 *****************************************************************************/ 19 20 #include <linux/module.h> 21 #include <linux/kmod.h> 22 #include <linux/init.h> 23 #include <linux/netdevice.h> 24 #include <linux/etherdevice.h> 25 #include <linux/ethtool.h> 26 #include <linux/mii.h> 27 #include <linux/usb.h> 28 #include <linux/bitrev.h> 29 #include <linux/crc16.h> 30 #include <linux/crc32.h> 31 #include <linux/usb/usbnet.h> 32 #include <linux/slab.h> 33 #include "smsc75xx.h" 34 35 #define SMSC_CHIPNAME "smsc75xx" 36 #define SMSC_DRIVER_VERSION "1.0.0" 37 #define HS_USB_PKT_SIZE (512) 38 #define FS_USB_PKT_SIZE (64) 39 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 40 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 41 #define DEFAULT_BULK_IN_DELAY (0x00002000) 42 #define MAX_SINGLE_PACKET_SIZE (9000) 43 #define LAN75XX_EEPROM_MAGIC (0x7500) 44 #define EEPROM_MAC_OFFSET (0x01) 45 #define DEFAULT_TX_CSUM_ENABLE (true) 46 #define DEFAULT_RX_CSUM_ENABLE (true) 47 #define SMSC75XX_INTERNAL_PHY_ID (1) 48 #define SMSC75XX_TX_OVERHEAD (8) 49 #define MAX_RX_FIFO_SIZE (20 * 1024) 50 #define MAX_TX_FIFO_SIZE (12 * 1024) 51 #define USB_VENDOR_ID_SMSC (0x0424) 52 #define USB_PRODUCT_ID_LAN7500 (0x7500) 53 #define USB_PRODUCT_ID_LAN7505 (0x7505) 54 #define RXW_PADDING 2 55 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 56 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 57 58 #define SUSPEND_SUSPEND0 (0x01) 59 #define SUSPEND_SUSPEND1 (0x02) 60 #define SUSPEND_SUSPEND2 (0x04) 61 #define SUSPEND_SUSPEND3 (0x08) 62 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 63 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 64 65 struct smsc75xx_priv { 66 struct usbnet *dev; 67 u32 rfe_ctl; 68 u32 wolopts; 69 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 70 struct mutex dataport_mutex; 71 spinlock_t rfe_ctl_lock; 72 struct work_struct set_multicast; 73 u8 suspend_flags; 74 }; 75 76 struct usb_context { 77 struct usb_ctrlrequest req; 78 struct usbnet *dev; 79 }; 80 81 static bool turbo_mode = true; 82 module_param(turbo_mode, bool, 0644); 83 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 84 85 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 86 u32 *data, int in_pm) 87 { 88 u32 buf; 89 int ret; 90 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 91 92 BUG_ON(!dev); 93 94 if (!in_pm) 95 fn = usbnet_read_cmd; 96 else 97 fn = usbnet_read_cmd_nopm; 98 99 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 100 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 101 0, index, &buf, 4); 102 if (unlikely(ret < 0)) 103 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 104 index, ret); 105 106 le32_to_cpus(&buf); 107 *data = buf; 108 109 return ret; 110 } 111 112 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 113 u32 data, int in_pm) 114 { 115 u32 buf; 116 int ret; 117 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 118 119 BUG_ON(!dev); 120 121 if (!in_pm) 122 fn = usbnet_write_cmd; 123 else 124 fn = usbnet_write_cmd_nopm; 125 126 buf = data; 127 cpu_to_le32s(&buf); 128 129 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 130 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 131 0, index, &buf, 4); 132 if (unlikely(ret < 0)) 133 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 134 index, ret); 135 136 return ret; 137 } 138 139 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 140 u32 *data) 141 { 142 return __smsc75xx_read_reg(dev, index, data, 1); 143 } 144 145 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 146 u32 data) 147 { 148 return __smsc75xx_write_reg(dev, index, data, 1); 149 } 150 151 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 152 u32 *data) 153 { 154 return __smsc75xx_read_reg(dev, index, data, 0); 155 } 156 157 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 158 u32 data) 159 { 160 return __smsc75xx_write_reg(dev, index, data, 0); 161 } 162 163 /* Loop until the read is completed with timeout 164 * called with phy_mutex held */ 165 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 166 int in_pm) 167 { 168 unsigned long start_time = jiffies; 169 u32 val; 170 int ret; 171 172 do { 173 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 174 if (ret < 0) { 175 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 176 return ret; 177 } 178 179 if (!(val & MII_ACCESS_BUSY)) 180 return 0; 181 } while (!time_after(jiffies, start_time + HZ)); 182 183 return -EIO; 184 } 185 186 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 187 int in_pm) 188 { 189 struct usbnet *dev = netdev_priv(netdev); 190 u32 val, addr; 191 int ret; 192 193 mutex_lock(&dev->phy_mutex); 194 195 /* confirm MII not busy */ 196 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 197 if (ret < 0) { 198 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 199 goto done; 200 } 201 202 /* set the address, index & direction (read from PHY) */ 203 phy_id &= dev->mii.phy_id_mask; 204 idx &= dev->mii.reg_num_mask; 205 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 206 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 207 | MII_ACCESS_READ | MII_ACCESS_BUSY; 208 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 209 if (ret < 0) { 210 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 211 goto done; 212 } 213 214 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 215 if (ret < 0) { 216 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 217 goto done; 218 } 219 220 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 221 if (ret < 0) { 222 netdev_warn(dev->net, "Error reading MII_DATA\n"); 223 goto done; 224 } 225 226 ret = (u16)(val & 0xFFFF); 227 228 done: 229 mutex_unlock(&dev->phy_mutex); 230 return ret; 231 } 232 233 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 234 int idx, int regval, int in_pm) 235 { 236 struct usbnet *dev = netdev_priv(netdev); 237 u32 val, addr; 238 int ret; 239 240 mutex_lock(&dev->phy_mutex); 241 242 /* confirm MII not busy */ 243 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 244 if (ret < 0) { 245 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 246 goto done; 247 } 248 249 val = regval; 250 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 251 if (ret < 0) { 252 netdev_warn(dev->net, "Error writing MII_DATA\n"); 253 goto done; 254 } 255 256 /* set the address, index & direction (write to PHY) */ 257 phy_id &= dev->mii.phy_id_mask; 258 idx &= dev->mii.reg_num_mask; 259 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 260 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 261 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 262 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 263 if (ret < 0) { 264 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 265 goto done; 266 } 267 268 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 269 if (ret < 0) { 270 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 271 goto done; 272 } 273 274 done: 275 mutex_unlock(&dev->phy_mutex); 276 } 277 278 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 279 int idx) 280 { 281 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 282 } 283 284 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 285 int idx, int regval) 286 { 287 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 288 } 289 290 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 291 { 292 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 293 } 294 295 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 296 int regval) 297 { 298 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 299 } 300 301 static int smsc75xx_wait_eeprom(struct usbnet *dev) 302 { 303 unsigned long start_time = jiffies; 304 u32 val; 305 int ret; 306 307 do { 308 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 309 if (ret < 0) { 310 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 311 return ret; 312 } 313 314 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 315 break; 316 udelay(40); 317 } while (!time_after(jiffies, start_time + HZ)); 318 319 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 320 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 321 return -EIO; 322 } 323 324 return 0; 325 } 326 327 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 328 { 329 unsigned long start_time = jiffies; 330 u32 val; 331 int ret; 332 333 do { 334 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 335 if (ret < 0) { 336 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 337 return ret; 338 } 339 340 if (!(val & E2P_CMD_BUSY)) 341 return 0; 342 343 udelay(40); 344 } while (!time_after(jiffies, start_time + HZ)); 345 346 netdev_warn(dev->net, "EEPROM is busy\n"); 347 return -EIO; 348 } 349 350 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 351 u8 *data) 352 { 353 u32 val; 354 int i, ret; 355 356 BUG_ON(!dev); 357 BUG_ON(!data); 358 359 ret = smsc75xx_eeprom_confirm_not_busy(dev); 360 if (ret) 361 return ret; 362 363 for (i = 0; i < length; i++) { 364 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 365 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 366 if (ret < 0) { 367 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 368 return ret; 369 } 370 371 ret = smsc75xx_wait_eeprom(dev); 372 if (ret < 0) 373 return ret; 374 375 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 376 if (ret < 0) { 377 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 378 return ret; 379 } 380 381 data[i] = val & 0xFF; 382 offset++; 383 } 384 385 return 0; 386 } 387 388 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 389 u8 *data) 390 { 391 u32 val; 392 int i, ret; 393 394 BUG_ON(!dev); 395 BUG_ON(!data); 396 397 ret = smsc75xx_eeprom_confirm_not_busy(dev); 398 if (ret) 399 return ret; 400 401 /* Issue write/erase enable command */ 402 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 403 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 404 if (ret < 0) { 405 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 406 return ret; 407 } 408 409 ret = smsc75xx_wait_eeprom(dev); 410 if (ret < 0) 411 return ret; 412 413 for (i = 0; i < length; i++) { 414 415 /* Fill data register */ 416 val = data[i]; 417 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 418 if (ret < 0) { 419 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 420 return ret; 421 } 422 423 /* Send "write" command */ 424 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 425 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 426 if (ret < 0) { 427 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 428 return ret; 429 } 430 431 ret = smsc75xx_wait_eeprom(dev); 432 if (ret < 0) 433 return ret; 434 435 offset++; 436 } 437 438 return 0; 439 } 440 441 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 442 { 443 int i, ret; 444 445 for (i = 0; i < 100; i++) { 446 u32 dp_sel; 447 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 448 if (ret < 0) { 449 netdev_warn(dev->net, "Error reading DP_SEL\n"); 450 return ret; 451 } 452 453 if (dp_sel & DP_SEL_DPRDY) 454 return 0; 455 456 udelay(40); 457 } 458 459 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 460 461 return -EIO; 462 } 463 464 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 465 u32 length, u32 *buf) 466 { 467 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 468 u32 dp_sel; 469 int i, ret; 470 471 mutex_lock(&pdata->dataport_mutex); 472 473 ret = smsc75xx_dataport_wait_not_busy(dev); 474 if (ret < 0) { 475 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 476 goto done; 477 } 478 479 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 480 if (ret < 0) { 481 netdev_warn(dev->net, "Error reading DP_SEL\n"); 482 goto done; 483 } 484 485 dp_sel &= ~DP_SEL_RSEL; 486 dp_sel |= ram_select; 487 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 488 if (ret < 0) { 489 netdev_warn(dev->net, "Error writing DP_SEL\n"); 490 goto done; 491 } 492 493 for (i = 0; i < length; i++) { 494 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 495 if (ret < 0) { 496 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 497 goto done; 498 } 499 500 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 501 if (ret < 0) { 502 netdev_warn(dev->net, "Error writing DP_DATA\n"); 503 goto done; 504 } 505 506 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 507 if (ret < 0) { 508 netdev_warn(dev->net, "Error writing DP_CMD\n"); 509 goto done; 510 } 511 512 ret = smsc75xx_dataport_wait_not_busy(dev); 513 if (ret < 0) { 514 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 515 goto done; 516 } 517 } 518 519 done: 520 mutex_unlock(&pdata->dataport_mutex); 521 return ret; 522 } 523 524 /* returns hash bit number for given MAC address */ 525 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 526 { 527 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 528 } 529 530 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 531 { 532 struct smsc75xx_priv *pdata = 533 container_of(param, struct smsc75xx_priv, set_multicast); 534 struct usbnet *dev = pdata->dev; 535 int ret; 536 537 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 538 pdata->rfe_ctl); 539 540 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 541 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 542 543 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 544 if (ret < 0) 545 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 546 } 547 548 static void smsc75xx_set_multicast(struct net_device *netdev) 549 { 550 struct usbnet *dev = netdev_priv(netdev); 551 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 552 unsigned long flags; 553 int i; 554 555 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 556 557 pdata->rfe_ctl &= 558 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 559 pdata->rfe_ctl |= RFE_CTL_AB; 560 561 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 562 pdata->multicast_hash_table[i] = 0; 563 564 if (dev->net->flags & IFF_PROMISC) { 565 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 566 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 567 } else if (dev->net->flags & IFF_ALLMULTI) { 568 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 569 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 570 } else if (!netdev_mc_empty(dev->net)) { 571 struct netdev_hw_addr *ha; 572 573 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 574 575 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 576 577 netdev_for_each_mc_addr(ha, netdev) { 578 u32 bitnum = smsc75xx_hash(ha->addr); 579 pdata->multicast_hash_table[bitnum / 32] |= 580 (1 << (bitnum % 32)); 581 } 582 } else { 583 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 584 pdata->rfe_ctl |= RFE_CTL_DPF; 585 } 586 587 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 588 589 /* defer register writes to a sleepable context */ 590 schedule_work(&pdata->set_multicast); 591 } 592 593 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 594 u16 lcladv, u16 rmtadv) 595 { 596 u32 flow = 0, fct_flow = 0; 597 int ret; 598 599 if (duplex == DUPLEX_FULL) { 600 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 601 602 if (cap & FLOW_CTRL_TX) { 603 flow = (FLOW_TX_FCEN | 0xFFFF); 604 /* set fct_flow thresholds to 20% and 80% */ 605 fct_flow = (8 << 8) | 32; 606 } 607 608 if (cap & FLOW_CTRL_RX) 609 flow |= FLOW_RX_FCEN; 610 611 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 612 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 613 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 614 } else { 615 netif_dbg(dev, link, dev->net, "half duplex\n"); 616 } 617 618 ret = smsc75xx_write_reg(dev, FLOW, flow); 619 if (ret < 0) { 620 netdev_warn(dev->net, "Error writing FLOW\n"); 621 return ret; 622 } 623 624 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 625 if (ret < 0) { 626 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 627 return ret; 628 } 629 630 return 0; 631 } 632 633 static int smsc75xx_link_reset(struct usbnet *dev) 634 { 635 struct mii_if_info *mii = &dev->mii; 636 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 637 u16 lcladv, rmtadv; 638 int ret; 639 640 /* write to clear phy interrupt status */ 641 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 642 PHY_INT_SRC_CLEAR_ALL); 643 644 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 645 if (ret < 0) { 646 netdev_warn(dev->net, "Error writing INT_STS\n"); 647 return ret; 648 } 649 650 mii_check_media(mii, 1, 1); 651 mii_ethtool_gset(&dev->mii, &ecmd); 652 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 653 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 654 655 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 656 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 657 658 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 659 } 660 661 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 662 { 663 u32 intdata; 664 665 if (urb->actual_length != 4) { 666 netdev_warn(dev->net, "unexpected urb length %d\n", 667 urb->actual_length); 668 return; 669 } 670 671 memcpy(&intdata, urb->transfer_buffer, 4); 672 le32_to_cpus(&intdata); 673 674 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 675 676 if (intdata & INT_ENP_PHY_INT) 677 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 678 else 679 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 680 intdata); 681 } 682 683 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 684 { 685 return MAX_EEPROM_SIZE; 686 } 687 688 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 689 struct ethtool_eeprom *ee, u8 *data) 690 { 691 struct usbnet *dev = netdev_priv(netdev); 692 693 ee->magic = LAN75XX_EEPROM_MAGIC; 694 695 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 696 } 697 698 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 699 struct ethtool_eeprom *ee, u8 *data) 700 { 701 struct usbnet *dev = netdev_priv(netdev); 702 703 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 704 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 705 ee->magic); 706 return -EINVAL; 707 } 708 709 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 710 } 711 712 static void smsc75xx_ethtool_get_wol(struct net_device *net, 713 struct ethtool_wolinfo *wolinfo) 714 { 715 struct usbnet *dev = netdev_priv(net); 716 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 717 718 wolinfo->supported = SUPPORTED_WAKE; 719 wolinfo->wolopts = pdata->wolopts; 720 } 721 722 static int smsc75xx_ethtool_set_wol(struct net_device *net, 723 struct ethtool_wolinfo *wolinfo) 724 { 725 struct usbnet *dev = netdev_priv(net); 726 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 727 int ret; 728 729 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 730 731 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 732 if (ret < 0) 733 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 734 735 return ret; 736 } 737 738 static const struct ethtool_ops smsc75xx_ethtool_ops = { 739 .get_link = usbnet_get_link, 740 .nway_reset = usbnet_nway_reset, 741 .get_drvinfo = usbnet_get_drvinfo, 742 .get_msglevel = usbnet_get_msglevel, 743 .set_msglevel = usbnet_set_msglevel, 744 .get_settings = usbnet_get_settings, 745 .set_settings = usbnet_set_settings, 746 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 747 .get_eeprom = smsc75xx_ethtool_get_eeprom, 748 .set_eeprom = smsc75xx_ethtool_set_eeprom, 749 .get_wol = smsc75xx_ethtool_get_wol, 750 .set_wol = smsc75xx_ethtool_set_wol, 751 }; 752 753 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 754 { 755 struct usbnet *dev = netdev_priv(netdev); 756 757 if (!netif_running(netdev)) 758 return -EINVAL; 759 760 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 761 } 762 763 static void smsc75xx_init_mac_address(struct usbnet *dev) 764 { 765 /* try reading mac address from EEPROM */ 766 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 767 dev->net->dev_addr) == 0) { 768 if (is_valid_ether_addr(dev->net->dev_addr)) { 769 /* eeprom values are valid so use them */ 770 netif_dbg(dev, ifup, dev->net, 771 "MAC address read from EEPROM\n"); 772 return; 773 } 774 } 775 776 /* no eeprom, or eeprom values are invalid. generate random MAC */ 777 eth_hw_addr_random(dev->net); 778 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 779 } 780 781 static int smsc75xx_set_mac_address(struct usbnet *dev) 782 { 783 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 784 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 785 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 786 787 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 788 if (ret < 0) { 789 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 790 return ret; 791 } 792 793 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 794 if (ret < 0) { 795 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 796 return ret; 797 } 798 799 addr_hi |= ADDR_FILTX_FB_VALID; 800 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 801 if (ret < 0) { 802 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 803 return ret; 804 } 805 806 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 807 if (ret < 0) 808 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 809 810 return ret; 811 } 812 813 static int smsc75xx_phy_initialize(struct usbnet *dev) 814 { 815 int bmcr, ret, timeout = 0; 816 817 /* Initialize MII structure */ 818 dev->mii.dev = dev->net; 819 dev->mii.mdio_read = smsc75xx_mdio_read; 820 dev->mii.mdio_write = smsc75xx_mdio_write; 821 dev->mii.phy_id_mask = 0x1f; 822 dev->mii.reg_num_mask = 0x1f; 823 dev->mii.supports_gmii = 1; 824 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 825 826 /* reset phy and wait for reset to complete */ 827 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 828 829 do { 830 msleep(10); 831 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 832 if (bmcr < 0) { 833 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 834 return bmcr; 835 } 836 timeout++; 837 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 838 839 if (timeout >= 100) { 840 netdev_warn(dev->net, "timeout on PHY Reset\n"); 841 return -EIO; 842 } 843 844 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 845 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 846 ADVERTISE_PAUSE_ASYM); 847 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 848 ADVERTISE_1000FULL); 849 850 /* read and write to clear phy interrupt status */ 851 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 852 if (ret < 0) { 853 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 854 return ret; 855 } 856 857 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 858 859 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 860 PHY_INT_MASK_DEFAULT); 861 mii_nway_restart(&dev->mii); 862 863 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 864 return 0; 865 } 866 867 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 868 { 869 int ret = 0; 870 u32 buf; 871 bool rxenabled; 872 873 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 874 if (ret < 0) { 875 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 876 return ret; 877 } 878 879 rxenabled = ((buf & MAC_RX_RXEN) != 0); 880 881 if (rxenabled) { 882 buf &= ~MAC_RX_RXEN; 883 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 884 if (ret < 0) { 885 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 886 return ret; 887 } 888 } 889 890 /* add 4 to size for FCS */ 891 buf &= ~MAC_RX_MAX_SIZE; 892 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 893 894 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 895 if (ret < 0) { 896 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 897 return ret; 898 } 899 900 if (rxenabled) { 901 buf |= MAC_RX_RXEN; 902 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 903 if (ret < 0) { 904 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 905 return ret; 906 } 907 } 908 909 return 0; 910 } 911 912 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 913 { 914 struct usbnet *dev = netdev_priv(netdev); 915 int ret; 916 917 if (new_mtu > MAX_SINGLE_PACKET_SIZE) 918 return -EINVAL; 919 920 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 921 if (ret < 0) { 922 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 923 return ret; 924 } 925 926 return usbnet_change_mtu(netdev, new_mtu); 927 } 928 929 /* Enable or disable Rx checksum offload engine */ 930 static int smsc75xx_set_features(struct net_device *netdev, 931 netdev_features_t features) 932 { 933 struct usbnet *dev = netdev_priv(netdev); 934 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 935 unsigned long flags; 936 int ret; 937 938 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 939 940 if (features & NETIF_F_RXCSUM) 941 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 942 else 943 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 944 945 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 946 /* it's racing here! */ 947 948 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 949 if (ret < 0) 950 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 951 952 return ret; 953 } 954 955 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 956 { 957 int timeout = 0; 958 959 do { 960 u32 buf; 961 int ret; 962 963 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 964 965 if (ret < 0) { 966 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 967 return ret; 968 } 969 970 if (buf & PMT_CTL_DEV_RDY) 971 return 0; 972 973 msleep(10); 974 timeout++; 975 } while (timeout < 100); 976 977 netdev_warn(dev->net, "timeout waiting for device ready\n"); 978 return -EIO; 979 } 980 981 static int smsc75xx_reset(struct usbnet *dev) 982 { 983 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 984 u32 buf; 985 int ret = 0, timeout; 986 987 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 988 989 ret = smsc75xx_wait_ready(dev, 0); 990 if (ret < 0) { 991 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 992 return ret; 993 } 994 995 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 996 if (ret < 0) { 997 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 998 return ret; 999 } 1000 1001 buf |= HW_CFG_LRST; 1002 1003 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1004 if (ret < 0) { 1005 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1006 return ret; 1007 } 1008 1009 timeout = 0; 1010 do { 1011 msleep(10); 1012 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1013 if (ret < 0) { 1014 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1015 return ret; 1016 } 1017 timeout++; 1018 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1019 1020 if (timeout >= 100) { 1021 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1022 return -EIO; 1023 } 1024 1025 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1026 1027 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1028 if (ret < 0) { 1029 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1030 return ret; 1031 } 1032 1033 buf |= PMT_CTL_PHY_RST; 1034 1035 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1036 if (ret < 0) { 1037 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1038 return ret; 1039 } 1040 1041 timeout = 0; 1042 do { 1043 msleep(10); 1044 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1045 if (ret < 0) { 1046 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1047 return ret; 1048 } 1049 timeout++; 1050 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1051 1052 if (timeout >= 100) { 1053 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1054 return -EIO; 1055 } 1056 1057 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1058 1059 ret = smsc75xx_set_mac_address(dev); 1060 if (ret < 0) { 1061 netdev_warn(dev->net, "Failed to set mac address\n"); 1062 return ret; 1063 } 1064 1065 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1066 dev->net->dev_addr); 1067 1068 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1069 if (ret < 0) { 1070 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1071 return ret; 1072 } 1073 1074 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1075 buf); 1076 1077 buf |= HW_CFG_BIR; 1078 1079 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1080 if (ret < 0) { 1081 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1082 return ret; 1083 } 1084 1085 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1086 if (ret < 0) { 1087 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1088 return ret; 1089 } 1090 1091 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1092 buf); 1093 1094 if (!turbo_mode) { 1095 buf = 0; 1096 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1097 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1098 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1099 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1100 } else { 1101 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1102 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1103 } 1104 1105 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1106 (ulong)dev->rx_urb_size); 1107 1108 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1109 if (ret < 0) { 1110 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1111 return ret; 1112 } 1113 1114 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1115 if (ret < 0) { 1116 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1117 return ret; 1118 } 1119 1120 netif_dbg(dev, ifup, dev->net, 1121 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1122 1123 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1124 if (ret < 0) { 1125 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1126 return ret; 1127 } 1128 1129 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1130 if (ret < 0) { 1131 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1132 return ret; 1133 } 1134 1135 netif_dbg(dev, ifup, dev->net, 1136 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1137 1138 if (turbo_mode) { 1139 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1140 if (ret < 0) { 1141 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1142 return ret; 1143 } 1144 1145 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1146 1147 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1148 1149 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1150 if (ret < 0) { 1151 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1152 return ret; 1153 } 1154 1155 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1156 if (ret < 0) { 1157 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1158 return ret; 1159 } 1160 1161 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1162 } 1163 1164 /* set FIFO sizes */ 1165 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1166 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1167 if (ret < 0) { 1168 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1169 return ret; 1170 } 1171 1172 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1173 1174 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1175 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1176 if (ret < 0) { 1177 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1178 return ret; 1179 } 1180 1181 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1182 1183 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1184 if (ret < 0) { 1185 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1186 return ret; 1187 } 1188 1189 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1190 if (ret < 0) { 1191 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1192 return ret; 1193 } 1194 1195 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1196 1197 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1198 if (ret < 0) { 1199 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1200 return ret; 1201 } 1202 1203 /* only set default GPIO/LED settings if no EEPROM is detected */ 1204 if (!(buf & E2P_CMD_LOADED)) { 1205 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1206 if (ret < 0) { 1207 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1208 return ret; 1209 } 1210 1211 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1212 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1213 1214 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1215 if (ret < 0) { 1216 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1217 return ret; 1218 } 1219 } 1220 1221 ret = smsc75xx_write_reg(dev, FLOW, 0); 1222 if (ret < 0) { 1223 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1224 return ret; 1225 } 1226 1227 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1228 if (ret < 0) { 1229 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1230 return ret; 1231 } 1232 1233 /* Don't need rfe_ctl_lock during initialisation */ 1234 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1235 if (ret < 0) { 1236 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1237 return ret; 1238 } 1239 1240 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1241 1242 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1243 if (ret < 0) { 1244 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1245 return ret; 1246 } 1247 1248 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1249 if (ret < 0) { 1250 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1251 return ret; 1252 } 1253 1254 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1255 pdata->rfe_ctl); 1256 1257 /* Enable or disable checksum offload engines */ 1258 smsc75xx_set_features(dev->net, dev->net->features); 1259 1260 smsc75xx_set_multicast(dev->net); 1261 1262 ret = smsc75xx_phy_initialize(dev); 1263 if (ret < 0) { 1264 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1265 return ret; 1266 } 1267 1268 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1269 if (ret < 0) { 1270 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1271 return ret; 1272 } 1273 1274 /* enable PHY interrupts */ 1275 buf |= INT_ENP_PHY_INT; 1276 1277 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1278 if (ret < 0) { 1279 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1280 return ret; 1281 } 1282 1283 /* allow mac to detect speed and duplex from phy */ 1284 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1285 if (ret < 0) { 1286 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1287 return ret; 1288 } 1289 1290 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1291 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1292 if (ret < 0) { 1293 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1294 return ret; 1295 } 1296 1297 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1298 if (ret < 0) { 1299 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1300 return ret; 1301 } 1302 1303 buf |= MAC_TX_TXEN; 1304 1305 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1306 if (ret < 0) { 1307 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1308 return ret; 1309 } 1310 1311 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1312 1313 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1314 if (ret < 0) { 1315 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1316 return ret; 1317 } 1318 1319 buf |= FCT_TX_CTL_EN; 1320 1321 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1322 if (ret < 0) { 1323 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1324 return ret; 1325 } 1326 1327 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1328 1329 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1330 if (ret < 0) { 1331 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1332 return ret; 1333 } 1334 1335 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1336 if (ret < 0) { 1337 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1338 return ret; 1339 } 1340 1341 buf |= MAC_RX_RXEN; 1342 1343 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1344 if (ret < 0) { 1345 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1346 return ret; 1347 } 1348 1349 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1350 1351 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1352 if (ret < 0) { 1353 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1354 return ret; 1355 } 1356 1357 buf |= FCT_RX_CTL_EN; 1358 1359 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1360 if (ret < 0) { 1361 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1362 return ret; 1363 } 1364 1365 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1366 1367 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1368 return 0; 1369 } 1370 1371 static const struct net_device_ops smsc75xx_netdev_ops = { 1372 .ndo_open = usbnet_open, 1373 .ndo_stop = usbnet_stop, 1374 .ndo_start_xmit = usbnet_start_xmit, 1375 .ndo_tx_timeout = usbnet_tx_timeout, 1376 .ndo_change_mtu = smsc75xx_change_mtu, 1377 .ndo_set_mac_address = eth_mac_addr, 1378 .ndo_validate_addr = eth_validate_addr, 1379 .ndo_do_ioctl = smsc75xx_ioctl, 1380 .ndo_set_rx_mode = smsc75xx_set_multicast, 1381 .ndo_set_features = smsc75xx_set_features, 1382 }; 1383 1384 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1385 { 1386 struct smsc75xx_priv *pdata = NULL; 1387 int ret; 1388 1389 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1390 1391 ret = usbnet_get_endpoints(dev, intf); 1392 if (ret < 0) { 1393 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1394 return ret; 1395 } 1396 1397 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1398 GFP_KERNEL); 1399 1400 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1401 if (!pdata) 1402 return -ENOMEM; 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 1414 if (DEFAULT_RX_CSUM_ENABLE) 1415 dev->net->features |= NETIF_F_RXCSUM; 1416 1417 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1418 NETIF_F_RXCSUM; 1419 1420 ret = smsc75xx_wait_ready(dev, 0); 1421 if (ret < 0) { 1422 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1423 return ret; 1424 } 1425 1426 smsc75xx_init_mac_address(dev); 1427 1428 /* Init all registers */ 1429 ret = smsc75xx_reset(dev); 1430 if (ret < 0) { 1431 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1432 return ret; 1433 } 1434 1435 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1436 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1437 dev->net->flags |= IFF_MULTICAST; 1438 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1439 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1440 return 0; 1441 } 1442 1443 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1444 { 1445 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1446 if (pdata) { 1447 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1448 kfree(pdata); 1449 pdata = NULL; 1450 dev->data[0] = 0; 1451 } 1452 } 1453 1454 static u16 smsc_crc(const u8 *buffer, size_t len) 1455 { 1456 return bitrev16(crc16(0xFFFF, buffer, len)); 1457 } 1458 1459 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1460 u32 wuf_mask1) 1461 { 1462 int cfg_base = WUF_CFGX + filter * 4; 1463 int mask_base = WUF_MASKX + filter * 16; 1464 int ret; 1465 1466 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1467 if (ret < 0) { 1468 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1469 return ret; 1470 } 1471 1472 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1473 if (ret < 0) { 1474 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1475 return ret; 1476 } 1477 1478 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1479 if (ret < 0) { 1480 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1481 return ret; 1482 } 1483 1484 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1485 if (ret < 0) { 1486 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1487 return ret; 1488 } 1489 1490 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1491 if (ret < 0) { 1492 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1493 return ret; 1494 } 1495 1496 return 0; 1497 } 1498 1499 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1500 { 1501 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1502 u32 val; 1503 int ret; 1504 1505 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1506 if (ret < 0) { 1507 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1508 return ret; 1509 } 1510 1511 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1512 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1513 1514 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1515 if (ret < 0) { 1516 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1517 return ret; 1518 } 1519 1520 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1521 1522 return 0; 1523 } 1524 1525 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1526 { 1527 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1528 u32 val; 1529 int ret; 1530 1531 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1532 if (ret < 0) { 1533 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1534 return ret; 1535 } 1536 1537 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1538 val |= PMT_CTL_SUS_MODE_1; 1539 1540 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1541 if (ret < 0) { 1542 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1543 return ret; 1544 } 1545 1546 /* clear wol status, enable energy detection */ 1547 val &= ~PMT_CTL_WUPS; 1548 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1549 1550 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1551 if (ret < 0) { 1552 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1553 return ret; 1554 } 1555 1556 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1557 1558 return 0; 1559 } 1560 1561 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1562 { 1563 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1564 u32 val; 1565 int ret; 1566 1567 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1568 if (ret < 0) { 1569 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1570 return ret; 1571 } 1572 1573 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1574 val |= PMT_CTL_SUS_MODE_2; 1575 1576 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1577 if (ret < 0) { 1578 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1579 return ret; 1580 } 1581 1582 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1583 1584 return 0; 1585 } 1586 1587 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1588 { 1589 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1590 u32 val; 1591 int ret; 1592 1593 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1594 if (ret < 0) { 1595 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1596 return ret; 1597 } 1598 1599 if (val & FCT_RX_CTL_RXUSED) { 1600 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1601 return -EBUSY; 1602 } 1603 1604 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1605 if (ret < 0) { 1606 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1607 return ret; 1608 } 1609 1610 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1611 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1612 1613 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1614 if (ret < 0) { 1615 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1616 return ret; 1617 } 1618 1619 /* clear wol status */ 1620 val &= ~PMT_CTL_WUPS; 1621 val |= PMT_CTL_WUPS_WOL; 1622 1623 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1624 if (ret < 0) { 1625 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1626 return ret; 1627 } 1628 1629 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1630 1631 return 0; 1632 } 1633 1634 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1635 { 1636 struct mii_if_info *mii = &dev->mii; 1637 int ret; 1638 1639 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1640 1641 /* read to clear */ 1642 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1643 if (ret < 0) { 1644 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1645 return ret; 1646 } 1647 1648 /* enable interrupt source */ 1649 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1650 if (ret < 0) { 1651 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1652 return ret; 1653 } 1654 1655 ret |= mask; 1656 1657 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1658 1659 return 0; 1660 } 1661 1662 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1663 { 1664 struct mii_if_info *mii = &dev->mii; 1665 int ret; 1666 1667 /* first, a dummy read, needed to latch some MII phys */ 1668 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1669 if (ret < 0) { 1670 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1671 return ret; 1672 } 1673 1674 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1675 if (ret < 0) { 1676 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1677 return ret; 1678 } 1679 1680 return !!(ret & BMSR_LSTATUS); 1681 } 1682 1683 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1684 { 1685 int ret; 1686 1687 if (!netif_running(dev->net)) { 1688 /* interface is ifconfig down so fully power down hw */ 1689 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1690 return smsc75xx_enter_suspend2(dev); 1691 } 1692 1693 if (!link_up) { 1694 /* link is down so enter EDPD mode */ 1695 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1696 1697 /* enable PHY wakeup events for if cable is attached */ 1698 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1699 PHY_INT_MASK_ANEG_COMP); 1700 if (ret < 0) { 1701 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1702 return ret; 1703 } 1704 1705 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1706 return smsc75xx_enter_suspend1(dev); 1707 } 1708 1709 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1710 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1711 PHY_INT_MASK_LINK_DOWN); 1712 if (ret < 0) { 1713 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1714 return ret; 1715 } 1716 1717 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1718 return smsc75xx_enter_suspend3(dev); 1719 } 1720 1721 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1722 { 1723 struct usbnet *dev = usb_get_intfdata(intf); 1724 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1725 u32 val, link_up; 1726 int ret; 1727 1728 ret = usbnet_suspend(intf, message); 1729 if (ret < 0) { 1730 netdev_warn(dev->net, "usbnet_suspend error\n"); 1731 return ret; 1732 } 1733 1734 if (pdata->suspend_flags) { 1735 netdev_warn(dev->net, "error during last resume\n"); 1736 pdata->suspend_flags = 0; 1737 } 1738 1739 /* determine if link is up using only _nopm functions */ 1740 link_up = smsc75xx_link_ok_nopm(dev); 1741 1742 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1743 ret = smsc75xx_autosuspend(dev, link_up); 1744 goto done; 1745 } 1746 1747 /* if we get this far we're not autosuspending */ 1748 /* if no wol options set, or if link is down and we're not waking on 1749 * PHY activity, enter lowest power SUSPEND2 mode 1750 */ 1751 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1752 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1753 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1754 1755 /* disable energy detect (link up) & wake up events */ 1756 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1757 if (ret < 0) { 1758 netdev_warn(dev->net, "Error reading WUCSR\n"); 1759 goto done; 1760 } 1761 1762 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1763 1764 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1765 if (ret < 0) { 1766 netdev_warn(dev->net, "Error writing WUCSR\n"); 1767 goto done; 1768 } 1769 1770 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1771 if (ret < 0) { 1772 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1773 goto done; 1774 } 1775 1776 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1777 1778 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1779 if (ret < 0) { 1780 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1781 goto done; 1782 } 1783 1784 ret = smsc75xx_enter_suspend2(dev); 1785 goto done; 1786 } 1787 1788 if (pdata->wolopts & WAKE_PHY) { 1789 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1790 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1791 if (ret < 0) { 1792 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1793 goto done; 1794 } 1795 1796 /* if link is down then configure EDPD and enter SUSPEND1, 1797 * otherwise enter SUSPEND0 below 1798 */ 1799 if (!link_up) { 1800 struct mii_if_info *mii = &dev->mii; 1801 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1802 1803 /* enable energy detect power-down mode */ 1804 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1805 PHY_MODE_CTRL_STS); 1806 if (ret < 0) { 1807 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1808 goto done; 1809 } 1810 1811 ret |= MODE_CTRL_STS_EDPWRDOWN; 1812 1813 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1814 PHY_MODE_CTRL_STS, ret); 1815 1816 /* enter SUSPEND1 mode */ 1817 ret = smsc75xx_enter_suspend1(dev); 1818 goto done; 1819 } 1820 } 1821 1822 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1823 int i, filter = 0; 1824 1825 /* disable all filters */ 1826 for (i = 0; i < WUF_NUM; i++) { 1827 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1828 if (ret < 0) { 1829 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1830 goto done; 1831 } 1832 } 1833 1834 if (pdata->wolopts & WAKE_MCAST) { 1835 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1836 netdev_info(dev->net, "enabling multicast detection\n"); 1837 1838 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1839 | smsc_crc(mcast, 3); 1840 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1841 if (ret < 0) { 1842 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1843 goto done; 1844 } 1845 } 1846 1847 if (pdata->wolopts & WAKE_ARP) { 1848 const u8 arp[] = {0x08, 0x06}; 1849 netdev_info(dev->net, "enabling ARP detection\n"); 1850 1851 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1852 | smsc_crc(arp, 2); 1853 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1854 if (ret < 0) { 1855 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1856 goto done; 1857 } 1858 } 1859 1860 /* clear any pending pattern match packet status */ 1861 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1862 if (ret < 0) { 1863 netdev_warn(dev->net, "Error reading WUCSR\n"); 1864 goto done; 1865 } 1866 1867 val |= WUCSR_WUFR; 1868 1869 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1870 if (ret < 0) { 1871 netdev_warn(dev->net, "Error writing WUCSR\n"); 1872 goto done; 1873 } 1874 1875 netdev_info(dev->net, "enabling packet match detection\n"); 1876 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1877 if (ret < 0) { 1878 netdev_warn(dev->net, "Error reading WUCSR\n"); 1879 goto done; 1880 } 1881 1882 val |= WUCSR_WUEN; 1883 1884 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1885 if (ret < 0) { 1886 netdev_warn(dev->net, "Error writing WUCSR\n"); 1887 goto done; 1888 } 1889 } else { 1890 netdev_info(dev->net, "disabling packet match detection\n"); 1891 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1892 if (ret < 0) { 1893 netdev_warn(dev->net, "Error reading WUCSR\n"); 1894 goto done; 1895 } 1896 1897 val &= ~WUCSR_WUEN; 1898 1899 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1900 if (ret < 0) { 1901 netdev_warn(dev->net, "Error writing WUCSR\n"); 1902 goto done; 1903 } 1904 } 1905 1906 /* disable magic, bcast & unicast wakeup sources */ 1907 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1908 if (ret < 0) { 1909 netdev_warn(dev->net, "Error reading WUCSR\n"); 1910 goto done; 1911 } 1912 1913 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1914 1915 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1916 if (ret < 0) { 1917 netdev_warn(dev->net, "Error writing WUCSR\n"); 1918 goto done; 1919 } 1920 1921 if (pdata->wolopts & WAKE_PHY) { 1922 netdev_info(dev->net, "enabling PHY wakeup\n"); 1923 1924 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1925 if (ret < 0) { 1926 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1927 goto done; 1928 } 1929 1930 /* clear wol status, enable energy detection */ 1931 val &= ~PMT_CTL_WUPS; 1932 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1933 1934 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1935 if (ret < 0) { 1936 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1937 goto done; 1938 } 1939 } 1940 1941 if (pdata->wolopts & WAKE_MAGIC) { 1942 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1943 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1944 if (ret < 0) { 1945 netdev_warn(dev->net, "Error reading WUCSR\n"); 1946 goto done; 1947 } 1948 1949 /* clear any pending magic packet status */ 1950 val |= WUCSR_MPR | WUCSR_MPEN; 1951 1952 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1953 if (ret < 0) { 1954 netdev_warn(dev->net, "Error writing WUCSR\n"); 1955 goto done; 1956 } 1957 } 1958 1959 if (pdata->wolopts & WAKE_BCAST) { 1960 netdev_info(dev->net, "enabling broadcast detection\n"); 1961 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1962 if (ret < 0) { 1963 netdev_warn(dev->net, "Error reading WUCSR\n"); 1964 goto done; 1965 } 1966 1967 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1968 1969 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1970 if (ret < 0) { 1971 netdev_warn(dev->net, "Error writing WUCSR\n"); 1972 goto done; 1973 } 1974 } 1975 1976 if (pdata->wolopts & WAKE_UCAST) { 1977 netdev_info(dev->net, "enabling unicast detection\n"); 1978 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1979 if (ret < 0) { 1980 netdev_warn(dev->net, "Error reading WUCSR\n"); 1981 goto done; 1982 } 1983 1984 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1985 1986 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1987 if (ret < 0) { 1988 netdev_warn(dev->net, "Error writing WUCSR\n"); 1989 goto done; 1990 } 1991 } 1992 1993 /* enable receiver to enable frame reception */ 1994 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 1995 if (ret < 0) { 1996 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1997 goto done; 1998 } 1999 2000 val |= MAC_RX_RXEN; 2001 2002 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2003 if (ret < 0) { 2004 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2005 goto done; 2006 } 2007 2008 /* some wol options are enabled, so enter SUSPEND0 */ 2009 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2010 ret = smsc75xx_enter_suspend0(dev); 2011 2012 done: 2013 /* 2014 * TODO: resume() might need to handle the suspend failure 2015 * in system sleep 2016 */ 2017 if (ret && PMSG_IS_AUTO(message)) 2018 usbnet_resume(intf); 2019 return ret; 2020 } 2021 2022 static int smsc75xx_resume(struct usb_interface *intf) 2023 { 2024 struct usbnet *dev = usb_get_intfdata(intf); 2025 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2026 u8 suspend_flags = pdata->suspend_flags; 2027 int ret; 2028 u32 val; 2029 2030 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2031 2032 /* do this first to ensure it's cleared even in error case */ 2033 pdata->suspend_flags = 0; 2034 2035 if (suspend_flags & SUSPEND_ALLMODES) { 2036 /* Disable wakeup sources */ 2037 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2038 if (ret < 0) { 2039 netdev_warn(dev->net, "Error reading WUCSR\n"); 2040 return ret; 2041 } 2042 2043 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2044 | WUCSR_BCST_EN); 2045 2046 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2047 if (ret < 0) { 2048 netdev_warn(dev->net, "Error writing WUCSR\n"); 2049 return ret; 2050 } 2051 2052 /* clear wake-up status */ 2053 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2054 if (ret < 0) { 2055 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2056 return ret; 2057 } 2058 2059 val &= ~PMT_CTL_WOL_EN; 2060 val |= PMT_CTL_WUPS; 2061 2062 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2063 if (ret < 0) { 2064 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2065 return ret; 2066 } 2067 } 2068 2069 if (suspend_flags & SUSPEND_SUSPEND2) { 2070 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2071 2072 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2073 if (ret < 0) { 2074 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2075 return ret; 2076 } 2077 2078 val |= PMT_CTL_PHY_PWRUP; 2079 2080 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2081 if (ret < 0) { 2082 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2083 return ret; 2084 } 2085 } 2086 2087 ret = smsc75xx_wait_ready(dev, 1); 2088 if (ret < 0) { 2089 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2090 return ret; 2091 } 2092 2093 return usbnet_resume(intf); 2094 } 2095 2096 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2097 u32 rx_cmd_a, u32 rx_cmd_b) 2098 { 2099 if (!(dev->net->features & NETIF_F_RXCSUM) || 2100 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2101 skb->ip_summed = CHECKSUM_NONE; 2102 } else { 2103 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2104 skb->ip_summed = CHECKSUM_COMPLETE; 2105 } 2106 } 2107 2108 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2109 { 2110 while (skb->len > 0) { 2111 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2112 struct sk_buff *ax_skb; 2113 unsigned char *packet; 2114 2115 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2116 le32_to_cpus(&rx_cmd_a); 2117 skb_pull(skb, 4); 2118 2119 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2120 le32_to_cpus(&rx_cmd_b); 2121 skb_pull(skb, 4 + RXW_PADDING); 2122 2123 packet = skb->data; 2124 2125 /* get the packet length */ 2126 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2127 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2128 2129 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2130 netif_dbg(dev, rx_err, dev->net, 2131 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2132 dev->net->stats.rx_errors++; 2133 dev->net->stats.rx_dropped++; 2134 2135 if (rx_cmd_a & RX_CMD_A_FCS) 2136 dev->net->stats.rx_crc_errors++; 2137 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2138 dev->net->stats.rx_frame_errors++; 2139 } else { 2140 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2141 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2142 netif_dbg(dev, rx_err, dev->net, 2143 "size err rx_cmd_a=0x%08x\n", 2144 rx_cmd_a); 2145 return 0; 2146 } 2147 2148 /* last frame in this batch */ 2149 if (skb->len == size) { 2150 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2151 rx_cmd_b); 2152 2153 skb_trim(skb, skb->len - 4); /* remove fcs */ 2154 skb->truesize = size + sizeof(struct sk_buff); 2155 2156 return 1; 2157 } 2158 2159 ax_skb = skb_clone(skb, GFP_ATOMIC); 2160 if (unlikely(!ax_skb)) { 2161 netdev_warn(dev->net, "Error allocating skb\n"); 2162 return 0; 2163 } 2164 2165 ax_skb->len = size; 2166 ax_skb->data = packet; 2167 skb_set_tail_pointer(ax_skb, size); 2168 2169 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2170 rx_cmd_b); 2171 2172 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2173 ax_skb->truesize = size + sizeof(struct sk_buff); 2174 2175 usbnet_skb_return(dev, ax_skb); 2176 } 2177 2178 skb_pull(skb, size); 2179 2180 /* padding bytes before the next frame starts */ 2181 if (skb->len) 2182 skb_pull(skb, align_count); 2183 } 2184 2185 if (unlikely(skb->len < 0)) { 2186 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); 2187 return 0; 2188 } 2189 2190 return 1; 2191 } 2192 2193 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2194 struct sk_buff *skb, gfp_t flags) 2195 { 2196 u32 tx_cmd_a, tx_cmd_b; 2197 2198 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2199 struct sk_buff *skb2 = 2200 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2201 dev_kfree_skb_any(skb); 2202 skb = skb2; 2203 if (!skb) 2204 return NULL; 2205 } 2206 2207 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2208 2209 if (skb->ip_summed == CHECKSUM_PARTIAL) 2210 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2211 2212 if (skb_is_gso(skb)) { 2213 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2214 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2215 2216 tx_cmd_a |= TX_CMD_A_LSO; 2217 } else { 2218 tx_cmd_b = 0; 2219 } 2220 2221 skb_push(skb, 4); 2222 cpu_to_le32s(&tx_cmd_b); 2223 memcpy(skb->data, &tx_cmd_b, 4); 2224 2225 skb_push(skb, 4); 2226 cpu_to_le32s(&tx_cmd_a); 2227 memcpy(skb->data, &tx_cmd_a, 4); 2228 2229 return skb; 2230 } 2231 2232 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2233 { 2234 dev->intf->needs_remote_wakeup = on; 2235 return 0; 2236 } 2237 2238 static const struct driver_info smsc75xx_info = { 2239 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2240 .bind = smsc75xx_bind, 2241 .unbind = smsc75xx_unbind, 2242 .link_reset = smsc75xx_link_reset, 2243 .reset = smsc75xx_reset, 2244 .rx_fixup = smsc75xx_rx_fixup, 2245 .tx_fixup = smsc75xx_tx_fixup, 2246 .status = smsc75xx_status, 2247 .manage_power = smsc75xx_manage_power, 2248 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2249 }; 2250 2251 static const struct usb_device_id products[] = { 2252 { 2253 /* SMSC7500 USB Gigabit Ethernet Device */ 2254 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2255 .driver_info = (unsigned long) &smsc75xx_info, 2256 }, 2257 { 2258 /* SMSC7500 USB Gigabit Ethernet Device */ 2259 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2260 .driver_info = (unsigned long) &smsc75xx_info, 2261 }, 2262 { }, /* END */ 2263 }; 2264 MODULE_DEVICE_TABLE(usb, products); 2265 2266 static struct usb_driver smsc75xx_driver = { 2267 .name = SMSC_CHIPNAME, 2268 .id_table = products, 2269 .probe = usbnet_probe, 2270 .suspend = smsc75xx_suspend, 2271 .resume = smsc75xx_resume, 2272 .reset_resume = smsc75xx_resume, 2273 .disconnect = usbnet_disconnect, 2274 .disable_hub_initiated_lpm = 1, 2275 .supports_autosuspend = 1, 2276 }; 2277 2278 module_usb_driver(smsc75xx_driver); 2279 2280 MODULE_AUTHOR("Nancy Lin"); 2281 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2282 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2283 MODULE_LICENSE("GPL"); 2284