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/netdevice.h> 23 #include <linux/etherdevice.h> 24 #include <linux/ethtool.h> 25 #include <linux/mii.h> 26 #include <linux/usb.h> 27 #include <linux/bitrev.h> 28 #include <linux/crc16.h> 29 #include <linux/crc32.h> 30 #include <linux/usb/usbnet.h> 31 #include <linux/slab.h> 32 #include "smsc75xx.h" 33 34 #define SMSC_CHIPNAME "smsc75xx" 35 #define SMSC_DRIVER_VERSION "1.0.0" 36 #define HS_USB_PKT_SIZE (512) 37 #define FS_USB_PKT_SIZE (64) 38 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 39 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 40 #define DEFAULT_BULK_IN_DELAY (0x00002000) 41 #define MAX_SINGLE_PACKET_SIZE (9000) 42 #define LAN75XX_EEPROM_MAGIC (0x7500) 43 #define EEPROM_MAC_OFFSET (0x01) 44 #define DEFAULT_TX_CSUM_ENABLE (true) 45 #define DEFAULT_RX_CSUM_ENABLE (true) 46 #define SMSC75XX_INTERNAL_PHY_ID (1) 47 #define SMSC75XX_TX_OVERHEAD (8) 48 #define MAX_RX_FIFO_SIZE (20 * 1024) 49 #define MAX_TX_FIFO_SIZE (12 * 1024) 50 #define USB_VENDOR_ID_SMSC (0x0424) 51 #define USB_PRODUCT_ID_LAN7500 (0x7500) 52 #define USB_PRODUCT_ID_LAN7505 (0x7505) 53 #define RXW_PADDING 2 54 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 55 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 56 57 #define SUSPEND_SUSPEND0 (0x01) 58 #define SUSPEND_SUSPEND1 (0x02) 59 #define SUSPEND_SUSPEND2 (0x04) 60 #define SUSPEND_SUSPEND3 (0x08) 61 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 62 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 63 64 struct smsc75xx_priv { 65 struct usbnet *dev; 66 u32 rfe_ctl; 67 u32 wolopts; 68 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 69 struct mutex dataport_mutex; 70 spinlock_t rfe_ctl_lock; 71 struct work_struct set_multicast; 72 u8 suspend_flags; 73 }; 74 75 struct usb_context { 76 struct usb_ctrlrequest req; 77 struct usbnet *dev; 78 }; 79 80 static bool turbo_mode = true; 81 module_param(turbo_mode, bool, 0644); 82 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 83 84 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 85 u32 *data, int in_pm) 86 { 87 u32 buf; 88 int ret; 89 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 90 91 BUG_ON(!dev); 92 93 if (!in_pm) 94 fn = usbnet_read_cmd; 95 else 96 fn = usbnet_read_cmd_nopm; 97 98 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 99 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 100 0, index, &buf, 4); 101 if (unlikely(ret < 0)) 102 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 103 index, ret); 104 105 le32_to_cpus(&buf); 106 *data = buf; 107 108 return ret; 109 } 110 111 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 112 u32 data, int in_pm) 113 { 114 u32 buf; 115 int ret; 116 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 117 118 BUG_ON(!dev); 119 120 if (!in_pm) 121 fn = usbnet_write_cmd; 122 else 123 fn = usbnet_write_cmd_nopm; 124 125 buf = data; 126 cpu_to_le32s(&buf); 127 128 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 129 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 130 0, index, &buf, 4); 131 if (unlikely(ret < 0)) 132 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 133 index, ret); 134 135 return ret; 136 } 137 138 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 139 u32 *data) 140 { 141 return __smsc75xx_read_reg(dev, index, data, 1); 142 } 143 144 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 145 u32 data) 146 { 147 return __smsc75xx_write_reg(dev, index, data, 1); 148 } 149 150 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 151 u32 *data) 152 { 153 return __smsc75xx_read_reg(dev, index, data, 0); 154 } 155 156 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 157 u32 data) 158 { 159 return __smsc75xx_write_reg(dev, index, data, 0); 160 } 161 162 /* Loop until the read is completed with timeout 163 * called with phy_mutex held */ 164 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 165 int in_pm) 166 { 167 unsigned long start_time = jiffies; 168 u32 val; 169 int ret; 170 171 do { 172 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 173 if (ret < 0) { 174 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 175 return ret; 176 } 177 178 if (!(val & MII_ACCESS_BUSY)) 179 return 0; 180 } while (!time_after(jiffies, start_time + HZ)); 181 182 return -EIO; 183 } 184 185 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 186 int in_pm) 187 { 188 struct usbnet *dev = netdev_priv(netdev); 189 u32 val, addr; 190 int ret; 191 192 mutex_lock(&dev->phy_mutex); 193 194 /* confirm MII not busy */ 195 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 196 if (ret < 0) { 197 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 198 goto done; 199 } 200 201 /* set the address, index & direction (read from PHY) */ 202 phy_id &= dev->mii.phy_id_mask; 203 idx &= dev->mii.reg_num_mask; 204 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 205 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 206 | MII_ACCESS_READ | MII_ACCESS_BUSY; 207 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 208 if (ret < 0) { 209 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 210 goto done; 211 } 212 213 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 214 if (ret < 0) { 215 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 216 goto done; 217 } 218 219 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 220 if (ret < 0) { 221 netdev_warn(dev->net, "Error reading MII_DATA\n"); 222 goto done; 223 } 224 225 ret = (u16)(val & 0xFFFF); 226 227 done: 228 mutex_unlock(&dev->phy_mutex); 229 return ret; 230 } 231 232 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 233 int idx, int regval, int in_pm) 234 { 235 struct usbnet *dev = netdev_priv(netdev); 236 u32 val, addr; 237 int ret; 238 239 mutex_lock(&dev->phy_mutex); 240 241 /* confirm MII not busy */ 242 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 243 if (ret < 0) { 244 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 245 goto done; 246 } 247 248 val = regval; 249 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 250 if (ret < 0) { 251 netdev_warn(dev->net, "Error writing MII_DATA\n"); 252 goto done; 253 } 254 255 /* set the address, index & direction (write to PHY) */ 256 phy_id &= dev->mii.phy_id_mask; 257 idx &= dev->mii.reg_num_mask; 258 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 259 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 260 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 261 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 262 if (ret < 0) { 263 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 264 goto done; 265 } 266 267 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 268 if (ret < 0) { 269 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 270 goto done; 271 } 272 273 done: 274 mutex_unlock(&dev->phy_mutex); 275 } 276 277 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 278 int idx) 279 { 280 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 281 } 282 283 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 284 int idx, int regval) 285 { 286 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 287 } 288 289 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 290 { 291 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 292 } 293 294 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 295 int regval) 296 { 297 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 298 } 299 300 static int smsc75xx_wait_eeprom(struct usbnet *dev) 301 { 302 unsigned long start_time = jiffies; 303 u32 val; 304 int ret; 305 306 do { 307 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 308 if (ret < 0) { 309 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 310 return ret; 311 } 312 313 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 314 break; 315 udelay(40); 316 } while (!time_after(jiffies, start_time + HZ)); 317 318 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 319 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 320 return -EIO; 321 } 322 323 return 0; 324 } 325 326 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 327 { 328 unsigned long start_time = jiffies; 329 u32 val; 330 int ret; 331 332 do { 333 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 334 if (ret < 0) { 335 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 336 return ret; 337 } 338 339 if (!(val & E2P_CMD_BUSY)) 340 return 0; 341 342 udelay(40); 343 } while (!time_after(jiffies, start_time + HZ)); 344 345 netdev_warn(dev->net, "EEPROM is busy\n"); 346 return -EIO; 347 } 348 349 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 350 u8 *data) 351 { 352 u32 val; 353 int i, ret; 354 355 BUG_ON(!dev); 356 BUG_ON(!data); 357 358 ret = smsc75xx_eeprom_confirm_not_busy(dev); 359 if (ret) 360 return ret; 361 362 for (i = 0; i < length; i++) { 363 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 364 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 365 if (ret < 0) { 366 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 367 return ret; 368 } 369 370 ret = smsc75xx_wait_eeprom(dev); 371 if (ret < 0) 372 return ret; 373 374 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 375 if (ret < 0) { 376 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 377 return ret; 378 } 379 380 data[i] = val & 0xFF; 381 offset++; 382 } 383 384 return 0; 385 } 386 387 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 388 u8 *data) 389 { 390 u32 val; 391 int i, ret; 392 393 BUG_ON(!dev); 394 BUG_ON(!data); 395 396 ret = smsc75xx_eeprom_confirm_not_busy(dev); 397 if (ret) 398 return ret; 399 400 /* Issue write/erase enable command */ 401 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 402 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 403 if (ret < 0) { 404 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 405 return ret; 406 } 407 408 ret = smsc75xx_wait_eeprom(dev); 409 if (ret < 0) 410 return ret; 411 412 for (i = 0; i < length; i++) { 413 414 /* Fill data register */ 415 val = data[i]; 416 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 417 if (ret < 0) { 418 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 419 return ret; 420 } 421 422 /* Send "write" command */ 423 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 424 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 425 if (ret < 0) { 426 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 427 return ret; 428 } 429 430 ret = smsc75xx_wait_eeprom(dev); 431 if (ret < 0) 432 return ret; 433 434 offset++; 435 } 436 437 return 0; 438 } 439 440 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 441 { 442 int i, ret; 443 444 for (i = 0; i < 100; i++) { 445 u32 dp_sel; 446 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 447 if (ret < 0) { 448 netdev_warn(dev->net, "Error reading DP_SEL\n"); 449 return ret; 450 } 451 452 if (dp_sel & DP_SEL_DPRDY) 453 return 0; 454 455 udelay(40); 456 } 457 458 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 459 460 return -EIO; 461 } 462 463 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 464 u32 length, u32 *buf) 465 { 466 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 467 u32 dp_sel; 468 int i, ret; 469 470 mutex_lock(&pdata->dataport_mutex); 471 472 ret = smsc75xx_dataport_wait_not_busy(dev); 473 if (ret < 0) { 474 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 475 goto done; 476 } 477 478 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 479 if (ret < 0) { 480 netdev_warn(dev->net, "Error reading DP_SEL\n"); 481 goto done; 482 } 483 484 dp_sel &= ~DP_SEL_RSEL; 485 dp_sel |= ram_select; 486 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 487 if (ret < 0) { 488 netdev_warn(dev->net, "Error writing DP_SEL\n"); 489 goto done; 490 } 491 492 for (i = 0; i < length; i++) { 493 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 494 if (ret < 0) { 495 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 496 goto done; 497 } 498 499 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 500 if (ret < 0) { 501 netdev_warn(dev->net, "Error writing DP_DATA\n"); 502 goto done; 503 } 504 505 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 506 if (ret < 0) { 507 netdev_warn(dev->net, "Error writing DP_CMD\n"); 508 goto done; 509 } 510 511 ret = smsc75xx_dataport_wait_not_busy(dev); 512 if (ret < 0) { 513 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 514 goto done; 515 } 516 } 517 518 done: 519 mutex_unlock(&pdata->dataport_mutex); 520 return ret; 521 } 522 523 /* returns hash bit number for given MAC address */ 524 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 525 { 526 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 527 } 528 529 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 530 { 531 struct smsc75xx_priv *pdata = 532 container_of(param, struct smsc75xx_priv, set_multicast); 533 struct usbnet *dev = pdata->dev; 534 int ret; 535 536 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 537 pdata->rfe_ctl); 538 539 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 540 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 541 542 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 543 if (ret < 0) 544 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 545 } 546 547 static void smsc75xx_set_multicast(struct net_device *netdev) 548 { 549 struct usbnet *dev = netdev_priv(netdev); 550 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 551 unsigned long flags; 552 int i; 553 554 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 555 556 pdata->rfe_ctl &= 557 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 558 pdata->rfe_ctl |= RFE_CTL_AB; 559 560 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 561 pdata->multicast_hash_table[i] = 0; 562 563 if (dev->net->flags & IFF_PROMISC) { 564 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 565 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 566 } else if (dev->net->flags & IFF_ALLMULTI) { 567 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 568 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 569 } else if (!netdev_mc_empty(dev->net)) { 570 struct netdev_hw_addr *ha; 571 572 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 573 574 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 575 576 netdev_for_each_mc_addr(ha, netdev) { 577 u32 bitnum = smsc75xx_hash(ha->addr); 578 pdata->multicast_hash_table[bitnum / 32] |= 579 (1 << (bitnum % 32)); 580 } 581 } else { 582 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 583 pdata->rfe_ctl |= RFE_CTL_DPF; 584 } 585 586 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 587 588 /* defer register writes to a sleepable context */ 589 schedule_work(&pdata->set_multicast); 590 } 591 592 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 593 u16 lcladv, u16 rmtadv) 594 { 595 u32 flow = 0, fct_flow = 0; 596 int ret; 597 598 if (duplex == DUPLEX_FULL) { 599 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 600 601 if (cap & FLOW_CTRL_TX) { 602 flow = (FLOW_TX_FCEN | 0xFFFF); 603 /* set fct_flow thresholds to 20% and 80% */ 604 fct_flow = (8 << 8) | 32; 605 } 606 607 if (cap & FLOW_CTRL_RX) 608 flow |= FLOW_RX_FCEN; 609 610 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 611 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 612 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 613 } else { 614 netif_dbg(dev, link, dev->net, "half duplex\n"); 615 } 616 617 ret = smsc75xx_write_reg(dev, FLOW, flow); 618 if (ret < 0) { 619 netdev_warn(dev->net, "Error writing FLOW\n"); 620 return ret; 621 } 622 623 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 624 if (ret < 0) { 625 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 626 return ret; 627 } 628 629 return 0; 630 } 631 632 static int smsc75xx_link_reset(struct usbnet *dev) 633 { 634 struct mii_if_info *mii = &dev->mii; 635 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 636 u16 lcladv, rmtadv; 637 int ret; 638 639 /* write to clear phy interrupt status */ 640 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 641 PHY_INT_SRC_CLEAR_ALL); 642 643 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 644 if (ret < 0) { 645 netdev_warn(dev->net, "Error writing INT_STS\n"); 646 return ret; 647 } 648 649 mii_check_media(mii, 1, 1); 650 mii_ethtool_gset(&dev->mii, &ecmd); 651 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 652 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 653 654 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 655 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 656 657 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 658 } 659 660 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 661 { 662 u32 intdata; 663 664 if (urb->actual_length != 4) { 665 netdev_warn(dev->net, "unexpected urb length %d\n", 666 urb->actual_length); 667 return; 668 } 669 670 memcpy(&intdata, urb->transfer_buffer, 4); 671 le32_to_cpus(&intdata); 672 673 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 674 675 if (intdata & INT_ENP_PHY_INT) 676 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 677 else 678 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 679 intdata); 680 } 681 682 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 683 { 684 return MAX_EEPROM_SIZE; 685 } 686 687 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 688 struct ethtool_eeprom *ee, u8 *data) 689 { 690 struct usbnet *dev = netdev_priv(netdev); 691 692 ee->magic = LAN75XX_EEPROM_MAGIC; 693 694 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 695 } 696 697 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 698 struct ethtool_eeprom *ee, u8 *data) 699 { 700 struct usbnet *dev = netdev_priv(netdev); 701 702 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 703 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 704 ee->magic); 705 return -EINVAL; 706 } 707 708 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 709 } 710 711 static void smsc75xx_ethtool_get_wol(struct net_device *net, 712 struct ethtool_wolinfo *wolinfo) 713 { 714 struct usbnet *dev = netdev_priv(net); 715 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 716 717 wolinfo->supported = SUPPORTED_WAKE; 718 wolinfo->wolopts = pdata->wolopts; 719 } 720 721 static int smsc75xx_ethtool_set_wol(struct net_device *net, 722 struct ethtool_wolinfo *wolinfo) 723 { 724 struct usbnet *dev = netdev_priv(net); 725 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 726 int ret; 727 728 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 729 730 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 731 if (ret < 0) 732 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 733 734 return ret; 735 } 736 737 static const struct ethtool_ops smsc75xx_ethtool_ops = { 738 .get_link = usbnet_get_link, 739 .nway_reset = usbnet_nway_reset, 740 .get_drvinfo = usbnet_get_drvinfo, 741 .get_msglevel = usbnet_get_msglevel, 742 .set_msglevel = usbnet_set_msglevel, 743 .get_settings = usbnet_get_settings, 744 .set_settings = usbnet_set_settings, 745 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 746 .get_eeprom = smsc75xx_ethtool_get_eeprom, 747 .set_eeprom = smsc75xx_ethtool_set_eeprom, 748 .get_wol = smsc75xx_ethtool_get_wol, 749 .set_wol = smsc75xx_ethtool_set_wol, 750 }; 751 752 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 753 { 754 struct usbnet *dev = netdev_priv(netdev); 755 756 if (!netif_running(netdev)) 757 return -EINVAL; 758 759 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 760 } 761 762 static void smsc75xx_init_mac_address(struct usbnet *dev) 763 { 764 /* try reading mac address from EEPROM */ 765 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 766 dev->net->dev_addr) == 0) { 767 if (is_valid_ether_addr(dev->net->dev_addr)) { 768 /* eeprom values are valid so use them */ 769 netif_dbg(dev, ifup, dev->net, 770 "MAC address read from EEPROM\n"); 771 return; 772 } 773 } 774 775 /* no eeprom, or eeprom values are invalid. generate random MAC */ 776 eth_hw_addr_random(dev->net); 777 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 778 } 779 780 static int smsc75xx_set_mac_address(struct usbnet *dev) 781 { 782 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 783 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 784 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 785 786 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 787 if (ret < 0) { 788 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 789 return ret; 790 } 791 792 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 793 if (ret < 0) { 794 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 795 return ret; 796 } 797 798 addr_hi |= ADDR_FILTX_FB_VALID; 799 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 800 if (ret < 0) { 801 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 802 return ret; 803 } 804 805 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 806 if (ret < 0) 807 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 808 809 return ret; 810 } 811 812 static int smsc75xx_phy_initialize(struct usbnet *dev) 813 { 814 int bmcr, ret, timeout = 0; 815 816 /* Initialize MII structure */ 817 dev->mii.dev = dev->net; 818 dev->mii.mdio_read = smsc75xx_mdio_read; 819 dev->mii.mdio_write = smsc75xx_mdio_write; 820 dev->mii.phy_id_mask = 0x1f; 821 dev->mii.reg_num_mask = 0x1f; 822 dev->mii.supports_gmii = 1; 823 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 824 825 /* reset phy and wait for reset to complete */ 826 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 827 828 do { 829 msleep(10); 830 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 831 if (bmcr < 0) { 832 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 833 return bmcr; 834 } 835 timeout++; 836 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 837 838 if (timeout >= 100) { 839 netdev_warn(dev->net, "timeout on PHY Reset\n"); 840 return -EIO; 841 } 842 843 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 844 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 845 ADVERTISE_PAUSE_ASYM); 846 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 847 ADVERTISE_1000FULL); 848 849 /* read and write to clear phy interrupt status */ 850 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 851 if (ret < 0) { 852 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 853 return ret; 854 } 855 856 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 857 858 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 859 PHY_INT_MASK_DEFAULT); 860 mii_nway_restart(&dev->mii); 861 862 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 863 return 0; 864 } 865 866 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 867 { 868 int ret = 0; 869 u32 buf; 870 bool rxenabled; 871 872 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 873 if (ret < 0) { 874 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 875 return ret; 876 } 877 878 rxenabled = ((buf & MAC_RX_RXEN) != 0); 879 880 if (rxenabled) { 881 buf &= ~MAC_RX_RXEN; 882 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 883 if (ret < 0) { 884 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 885 return ret; 886 } 887 } 888 889 /* add 4 to size for FCS */ 890 buf &= ~MAC_RX_MAX_SIZE; 891 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 892 893 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 894 if (ret < 0) { 895 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 896 return ret; 897 } 898 899 if (rxenabled) { 900 buf |= MAC_RX_RXEN; 901 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 902 if (ret < 0) { 903 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 904 return ret; 905 } 906 } 907 908 return 0; 909 } 910 911 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 912 { 913 struct usbnet *dev = netdev_priv(netdev); 914 int ret; 915 916 if (new_mtu > MAX_SINGLE_PACKET_SIZE) 917 return -EINVAL; 918 919 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 920 if (ret < 0) { 921 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 922 return ret; 923 } 924 925 return usbnet_change_mtu(netdev, new_mtu); 926 } 927 928 /* Enable or disable Rx checksum offload engine */ 929 static int smsc75xx_set_features(struct net_device *netdev, 930 netdev_features_t features) 931 { 932 struct usbnet *dev = netdev_priv(netdev); 933 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 934 unsigned long flags; 935 int ret; 936 937 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 938 939 if (features & NETIF_F_RXCSUM) 940 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 941 else 942 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 943 944 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 945 /* it's racing here! */ 946 947 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 948 if (ret < 0) 949 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 950 951 return ret; 952 } 953 954 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 955 { 956 int timeout = 0; 957 958 do { 959 u32 buf; 960 int ret; 961 962 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 963 964 if (ret < 0) { 965 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 966 return ret; 967 } 968 969 if (buf & PMT_CTL_DEV_RDY) 970 return 0; 971 972 msleep(10); 973 timeout++; 974 } while (timeout < 100); 975 976 netdev_warn(dev->net, "timeout waiting for device ready\n"); 977 return -EIO; 978 } 979 980 static int smsc75xx_reset(struct usbnet *dev) 981 { 982 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 983 u32 buf; 984 int ret = 0, timeout; 985 986 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 987 988 ret = smsc75xx_wait_ready(dev, 0); 989 if (ret < 0) { 990 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 991 return ret; 992 } 993 994 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 995 if (ret < 0) { 996 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 997 return ret; 998 } 999 1000 buf |= HW_CFG_LRST; 1001 1002 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1003 if (ret < 0) { 1004 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1005 return ret; 1006 } 1007 1008 timeout = 0; 1009 do { 1010 msleep(10); 1011 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1012 if (ret < 0) { 1013 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1014 return ret; 1015 } 1016 timeout++; 1017 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1018 1019 if (timeout >= 100) { 1020 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1021 return -EIO; 1022 } 1023 1024 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1025 1026 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1027 if (ret < 0) { 1028 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1029 return ret; 1030 } 1031 1032 buf |= PMT_CTL_PHY_RST; 1033 1034 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1035 if (ret < 0) { 1036 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1037 return ret; 1038 } 1039 1040 timeout = 0; 1041 do { 1042 msleep(10); 1043 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1044 if (ret < 0) { 1045 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1046 return ret; 1047 } 1048 timeout++; 1049 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1050 1051 if (timeout >= 100) { 1052 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1053 return -EIO; 1054 } 1055 1056 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1057 1058 ret = smsc75xx_set_mac_address(dev); 1059 if (ret < 0) { 1060 netdev_warn(dev->net, "Failed to set mac address\n"); 1061 return ret; 1062 } 1063 1064 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1065 dev->net->dev_addr); 1066 1067 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1068 if (ret < 0) { 1069 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1070 return ret; 1071 } 1072 1073 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1074 buf); 1075 1076 buf |= HW_CFG_BIR; 1077 1078 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1079 if (ret < 0) { 1080 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1081 return ret; 1082 } 1083 1084 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1085 if (ret < 0) { 1086 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1087 return ret; 1088 } 1089 1090 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1091 buf); 1092 1093 if (!turbo_mode) { 1094 buf = 0; 1095 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1096 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1097 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1098 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1099 } else { 1100 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1101 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1102 } 1103 1104 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1105 (ulong)dev->rx_urb_size); 1106 1107 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1108 if (ret < 0) { 1109 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1110 return ret; 1111 } 1112 1113 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1114 if (ret < 0) { 1115 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1116 return ret; 1117 } 1118 1119 netif_dbg(dev, ifup, dev->net, 1120 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1121 1122 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1123 if (ret < 0) { 1124 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1125 return ret; 1126 } 1127 1128 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1129 if (ret < 0) { 1130 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1131 return ret; 1132 } 1133 1134 netif_dbg(dev, ifup, dev->net, 1135 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1136 1137 if (turbo_mode) { 1138 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1139 if (ret < 0) { 1140 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1141 return ret; 1142 } 1143 1144 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1145 1146 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1147 1148 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1149 if (ret < 0) { 1150 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1151 return ret; 1152 } 1153 1154 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1155 if (ret < 0) { 1156 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1157 return ret; 1158 } 1159 1160 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1161 } 1162 1163 /* set FIFO sizes */ 1164 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1165 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1166 if (ret < 0) { 1167 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1168 return ret; 1169 } 1170 1171 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1172 1173 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1174 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1175 if (ret < 0) { 1176 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1177 return ret; 1178 } 1179 1180 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1181 1182 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1183 if (ret < 0) { 1184 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1185 return ret; 1186 } 1187 1188 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1189 if (ret < 0) { 1190 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1191 return ret; 1192 } 1193 1194 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1195 1196 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1197 if (ret < 0) { 1198 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1199 return ret; 1200 } 1201 1202 /* only set default GPIO/LED settings if no EEPROM is detected */ 1203 if (!(buf & E2P_CMD_LOADED)) { 1204 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1205 if (ret < 0) { 1206 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1207 return ret; 1208 } 1209 1210 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1211 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1212 1213 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1214 if (ret < 0) { 1215 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1216 return ret; 1217 } 1218 } 1219 1220 ret = smsc75xx_write_reg(dev, FLOW, 0); 1221 if (ret < 0) { 1222 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1223 return ret; 1224 } 1225 1226 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1227 if (ret < 0) { 1228 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1229 return ret; 1230 } 1231 1232 /* Don't need rfe_ctl_lock during initialisation */ 1233 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1234 if (ret < 0) { 1235 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1236 return ret; 1237 } 1238 1239 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1240 1241 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1242 if (ret < 0) { 1243 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1244 return ret; 1245 } 1246 1247 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1248 if (ret < 0) { 1249 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1250 return ret; 1251 } 1252 1253 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1254 pdata->rfe_ctl); 1255 1256 /* Enable or disable checksum offload engines */ 1257 smsc75xx_set_features(dev->net, dev->net->features); 1258 1259 smsc75xx_set_multicast(dev->net); 1260 1261 ret = smsc75xx_phy_initialize(dev); 1262 if (ret < 0) { 1263 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1264 return ret; 1265 } 1266 1267 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1268 if (ret < 0) { 1269 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1270 return ret; 1271 } 1272 1273 /* enable PHY interrupts */ 1274 buf |= INT_ENP_PHY_INT; 1275 1276 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1277 if (ret < 0) { 1278 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1279 return ret; 1280 } 1281 1282 /* allow mac to detect speed and duplex from phy */ 1283 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1284 if (ret < 0) { 1285 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1286 return ret; 1287 } 1288 1289 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1290 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1291 if (ret < 0) { 1292 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1293 return ret; 1294 } 1295 1296 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1297 if (ret < 0) { 1298 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1299 return ret; 1300 } 1301 1302 buf |= MAC_TX_TXEN; 1303 1304 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1305 if (ret < 0) { 1306 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1307 return ret; 1308 } 1309 1310 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1311 1312 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1313 if (ret < 0) { 1314 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1315 return ret; 1316 } 1317 1318 buf |= FCT_TX_CTL_EN; 1319 1320 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1321 if (ret < 0) { 1322 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1323 return ret; 1324 } 1325 1326 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1327 1328 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1329 if (ret < 0) { 1330 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1331 return ret; 1332 } 1333 1334 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1335 if (ret < 0) { 1336 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1337 return ret; 1338 } 1339 1340 buf |= MAC_RX_RXEN; 1341 1342 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1343 if (ret < 0) { 1344 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1345 return ret; 1346 } 1347 1348 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1349 1350 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1351 if (ret < 0) { 1352 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1353 return ret; 1354 } 1355 1356 buf |= FCT_RX_CTL_EN; 1357 1358 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1359 if (ret < 0) { 1360 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1361 return ret; 1362 } 1363 1364 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1365 1366 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1367 return 0; 1368 } 1369 1370 static const struct net_device_ops smsc75xx_netdev_ops = { 1371 .ndo_open = usbnet_open, 1372 .ndo_stop = usbnet_stop, 1373 .ndo_start_xmit = usbnet_start_xmit, 1374 .ndo_tx_timeout = usbnet_tx_timeout, 1375 .ndo_change_mtu = smsc75xx_change_mtu, 1376 .ndo_set_mac_address = eth_mac_addr, 1377 .ndo_validate_addr = eth_validate_addr, 1378 .ndo_do_ioctl = smsc75xx_ioctl, 1379 .ndo_set_rx_mode = smsc75xx_set_multicast, 1380 .ndo_set_features = smsc75xx_set_features, 1381 }; 1382 1383 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1384 { 1385 struct smsc75xx_priv *pdata = NULL; 1386 int ret; 1387 1388 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1389 1390 ret = usbnet_get_endpoints(dev, intf); 1391 if (ret < 0) { 1392 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1393 return ret; 1394 } 1395 1396 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1397 GFP_KERNEL); 1398 1399 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1400 if (!pdata) 1401 return -ENOMEM; 1402 1403 pdata->dev = dev; 1404 1405 spin_lock_init(&pdata->rfe_ctl_lock); 1406 mutex_init(&pdata->dataport_mutex); 1407 1408 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1409 1410 if (DEFAULT_TX_CSUM_ENABLE) 1411 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1412 1413 if (DEFAULT_RX_CSUM_ENABLE) 1414 dev->net->features |= NETIF_F_RXCSUM; 1415 1416 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1417 NETIF_F_RXCSUM; 1418 1419 ret = smsc75xx_wait_ready(dev, 0); 1420 if (ret < 0) { 1421 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1422 return ret; 1423 } 1424 1425 smsc75xx_init_mac_address(dev); 1426 1427 /* Init all registers */ 1428 ret = smsc75xx_reset(dev); 1429 if (ret < 0) { 1430 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1431 return ret; 1432 } 1433 1434 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1435 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1436 dev->net->flags |= IFF_MULTICAST; 1437 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1438 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1439 return 0; 1440 } 1441 1442 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1443 { 1444 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1445 if (pdata) { 1446 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1447 kfree(pdata); 1448 pdata = NULL; 1449 dev->data[0] = 0; 1450 } 1451 } 1452 1453 static u16 smsc_crc(const u8 *buffer, size_t len) 1454 { 1455 return bitrev16(crc16(0xFFFF, buffer, len)); 1456 } 1457 1458 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1459 u32 wuf_mask1) 1460 { 1461 int cfg_base = WUF_CFGX + filter * 4; 1462 int mask_base = WUF_MASKX + filter * 16; 1463 int ret; 1464 1465 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1466 if (ret < 0) { 1467 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1468 return ret; 1469 } 1470 1471 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1472 if (ret < 0) { 1473 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1474 return ret; 1475 } 1476 1477 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 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 + 8, 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 + 12, 0); 1490 if (ret < 0) { 1491 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1492 return ret; 1493 } 1494 1495 return 0; 1496 } 1497 1498 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1499 { 1500 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1501 u32 val; 1502 int ret; 1503 1504 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1505 if (ret < 0) { 1506 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1507 return ret; 1508 } 1509 1510 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1511 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1512 1513 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1514 if (ret < 0) { 1515 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1516 return ret; 1517 } 1518 1519 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1520 1521 return 0; 1522 } 1523 1524 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1525 { 1526 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1527 u32 val; 1528 int ret; 1529 1530 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1531 if (ret < 0) { 1532 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1533 return ret; 1534 } 1535 1536 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1537 val |= PMT_CTL_SUS_MODE_1; 1538 1539 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1540 if (ret < 0) { 1541 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1542 return ret; 1543 } 1544 1545 /* clear wol status, enable energy detection */ 1546 val &= ~PMT_CTL_WUPS; 1547 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1548 1549 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1550 if (ret < 0) { 1551 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1552 return ret; 1553 } 1554 1555 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1556 1557 return 0; 1558 } 1559 1560 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1561 { 1562 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1563 u32 val; 1564 int ret; 1565 1566 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1567 if (ret < 0) { 1568 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1569 return ret; 1570 } 1571 1572 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1573 val |= PMT_CTL_SUS_MODE_2; 1574 1575 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1576 if (ret < 0) { 1577 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1578 return ret; 1579 } 1580 1581 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1582 1583 return 0; 1584 } 1585 1586 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1587 { 1588 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1589 u32 val; 1590 int ret; 1591 1592 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1593 if (ret < 0) { 1594 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1595 return ret; 1596 } 1597 1598 if (val & FCT_RX_CTL_RXUSED) { 1599 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1600 return -EBUSY; 1601 } 1602 1603 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1604 if (ret < 0) { 1605 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1606 return ret; 1607 } 1608 1609 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1610 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1611 1612 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1613 if (ret < 0) { 1614 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1615 return ret; 1616 } 1617 1618 /* clear wol status */ 1619 val &= ~PMT_CTL_WUPS; 1620 val |= PMT_CTL_WUPS_WOL; 1621 1622 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1623 if (ret < 0) { 1624 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1625 return ret; 1626 } 1627 1628 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1629 1630 return 0; 1631 } 1632 1633 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1634 { 1635 struct mii_if_info *mii = &dev->mii; 1636 int ret; 1637 1638 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1639 1640 /* read to clear */ 1641 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1642 if (ret < 0) { 1643 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1644 return ret; 1645 } 1646 1647 /* enable interrupt source */ 1648 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1649 if (ret < 0) { 1650 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1651 return ret; 1652 } 1653 1654 ret |= mask; 1655 1656 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1657 1658 return 0; 1659 } 1660 1661 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1662 { 1663 struct mii_if_info *mii = &dev->mii; 1664 int ret; 1665 1666 /* first, a dummy read, needed to latch some MII phys */ 1667 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1668 if (ret < 0) { 1669 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1670 return ret; 1671 } 1672 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 return !!(ret & BMSR_LSTATUS); 1680 } 1681 1682 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1683 { 1684 int ret; 1685 1686 if (!netif_running(dev->net)) { 1687 /* interface is ifconfig down so fully power down hw */ 1688 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1689 return smsc75xx_enter_suspend2(dev); 1690 } 1691 1692 if (!link_up) { 1693 /* link is down so enter EDPD mode */ 1694 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1695 1696 /* enable PHY wakeup events for if cable is attached */ 1697 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1698 PHY_INT_MASK_ANEG_COMP); 1699 if (ret < 0) { 1700 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1701 return ret; 1702 } 1703 1704 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1705 return smsc75xx_enter_suspend1(dev); 1706 } 1707 1708 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1709 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1710 PHY_INT_MASK_LINK_DOWN); 1711 if (ret < 0) { 1712 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1713 return ret; 1714 } 1715 1716 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1717 return smsc75xx_enter_suspend3(dev); 1718 } 1719 1720 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1721 { 1722 struct usbnet *dev = usb_get_intfdata(intf); 1723 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1724 u32 val, link_up; 1725 int ret; 1726 1727 ret = usbnet_suspend(intf, message); 1728 if (ret < 0) { 1729 netdev_warn(dev->net, "usbnet_suspend error\n"); 1730 return ret; 1731 } 1732 1733 if (pdata->suspend_flags) { 1734 netdev_warn(dev->net, "error during last resume\n"); 1735 pdata->suspend_flags = 0; 1736 } 1737 1738 /* determine if link is up using only _nopm functions */ 1739 link_up = smsc75xx_link_ok_nopm(dev); 1740 1741 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1742 ret = smsc75xx_autosuspend(dev, link_up); 1743 goto done; 1744 } 1745 1746 /* if we get this far we're not autosuspending */ 1747 /* if no wol options set, or if link is down and we're not waking on 1748 * PHY activity, enter lowest power SUSPEND2 mode 1749 */ 1750 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1751 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1752 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1753 1754 /* disable energy detect (link up) & wake up events */ 1755 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1756 if (ret < 0) { 1757 netdev_warn(dev->net, "Error reading WUCSR\n"); 1758 goto done; 1759 } 1760 1761 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1762 1763 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1764 if (ret < 0) { 1765 netdev_warn(dev->net, "Error writing WUCSR\n"); 1766 goto done; 1767 } 1768 1769 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1770 if (ret < 0) { 1771 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1772 goto done; 1773 } 1774 1775 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1776 1777 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1778 if (ret < 0) { 1779 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1780 goto done; 1781 } 1782 1783 ret = smsc75xx_enter_suspend2(dev); 1784 goto done; 1785 } 1786 1787 if (pdata->wolopts & WAKE_PHY) { 1788 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1789 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1790 if (ret < 0) { 1791 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1792 goto done; 1793 } 1794 1795 /* if link is down then configure EDPD and enter SUSPEND1, 1796 * otherwise enter SUSPEND0 below 1797 */ 1798 if (!link_up) { 1799 struct mii_if_info *mii = &dev->mii; 1800 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1801 1802 /* enable energy detect power-down mode */ 1803 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1804 PHY_MODE_CTRL_STS); 1805 if (ret < 0) { 1806 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1807 goto done; 1808 } 1809 1810 ret |= MODE_CTRL_STS_EDPWRDOWN; 1811 1812 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1813 PHY_MODE_CTRL_STS, ret); 1814 1815 /* enter SUSPEND1 mode */ 1816 ret = smsc75xx_enter_suspend1(dev); 1817 goto done; 1818 } 1819 } 1820 1821 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1822 int i, filter = 0; 1823 1824 /* disable all filters */ 1825 for (i = 0; i < WUF_NUM; i++) { 1826 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1827 if (ret < 0) { 1828 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1829 goto done; 1830 } 1831 } 1832 1833 if (pdata->wolopts & WAKE_MCAST) { 1834 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1835 netdev_info(dev->net, "enabling multicast detection\n"); 1836 1837 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1838 | smsc_crc(mcast, 3); 1839 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1840 if (ret < 0) { 1841 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1842 goto done; 1843 } 1844 } 1845 1846 if (pdata->wolopts & WAKE_ARP) { 1847 const u8 arp[] = {0x08, 0x06}; 1848 netdev_info(dev->net, "enabling ARP detection\n"); 1849 1850 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1851 | smsc_crc(arp, 2); 1852 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1853 if (ret < 0) { 1854 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1855 goto done; 1856 } 1857 } 1858 1859 /* clear any pending pattern match packet status */ 1860 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1861 if (ret < 0) { 1862 netdev_warn(dev->net, "Error reading WUCSR\n"); 1863 goto done; 1864 } 1865 1866 val |= WUCSR_WUFR; 1867 1868 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1869 if (ret < 0) { 1870 netdev_warn(dev->net, "Error writing WUCSR\n"); 1871 goto done; 1872 } 1873 1874 netdev_info(dev->net, "enabling packet match detection\n"); 1875 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1876 if (ret < 0) { 1877 netdev_warn(dev->net, "Error reading WUCSR\n"); 1878 goto done; 1879 } 1880 1881 val |= WUCSR_WUEN; 1882 1883 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1884 if (ret < 0) { 1885 netdev_warn(dev->net, "Error writing WUCSR\n"); 1886 goto done; 1887 } 1888 } else { 1889 netdev_info(dev->net, "disabling packet match detection\n"); 1890 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1891 if (ret < 0) { 1892 netdev_warn(dev->net, "Error reading WUCSR\n"); 1893 goto done; 1894 } 1895 1896 val &= ~WUCSR_WUEN; 1897 1898 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1899 if (ret < 0) { 1900 netdev_warn(dev->net, "Error writing WUCSR\n"); 1901 goto done; 1902 } 1903 } 1904 1905 /* disable magic, bcast & unicast wakeup sources */ 1906 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1907 if (ret < 0) { 1908 netdev_warn(dev->net, "Error reading WUCSR\n"); 1909 goto done; 1910 } 1911 1912 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1913 1914 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1915 if (ret < 0) { 1916 netdev_warn(dev->net, "Error writing WUCSR\n"); 1917 goto done; 1918 } 1919 1920 if (pdata->wolopts & WAKE_PHY) { 1921 netdev_info(dev->net, "enabling PHY wakeup\n"); 1922 1923 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1924 if (ret < 0) { 1925 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1926 goto done; 1927 } 1928 1929 /* clear wol status, enable energy detection */ 1930 val &= ~PMT_CTL_WUPS; 1931 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1932 1933 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1934 if (ret < 0) { 1935 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1936 goto done; 1937 } 1938 } 1939 1940 if (pdata->wolopts & WAKE_MAGIC) { 1941 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1942 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1943 if (ret < 0) { 1944 netdev_warn(dev->net, "Error reading WUCSR\n"); 1945 goto done; 1946 } 1947 1948 /* clear any pending magic packet status */ 1949 val |= WUCSR_MPR | WUCSR_MPEN; 1950 1951 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1952 if (ret < 0) { 1953 netdev_warn(dev->net, "Error writing WUCSR\n"); 1954 goto done; 1955 } 1956 } 1957 1958 if (pdata->wolopts & WAKE_BCAST) { 1959 netdev_info(dev->net, "enabling broadcast detection\n"); 1960 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1961 if (ret < 0) { 1962 netdev_warn(dev->net, "Error reading WUCSR\n"); 1963 goto done; 1964 } 1965 1966 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1967 1968 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1969 if (ret < 0) { 1970 netdev_warn(dev->net, "Error writing WUCSR\n"); 1971 goto done; 1972 } 1973 } 1974 1975 if (pdata->wolopts & WAKE_UCAST) { 1976 netdev_info(dev->net, "enabling unicast detection\n"); 1977 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1978 if (ret < 0) { 1979 netdev_warn(dev->net, "Error reading WUCSR\n"); 1980 goto done; 1981 } 1982 1983 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1984 1985 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1986 if (ret < 0) { 1987 netdev_warn(dev->net, "Error writing WUCSR\n"); 1988 goto done; 1989 } 1990 } 1991 1992 /* enable receiver to enable frame reception */ 1993 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 1994 if (ret < 0) { 1995 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1996 goto done; 1997 } 1998 1999 val |= MAC_RX_RXEN; 2000 2001 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2002 if (ret < 0) { 2003 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2004 goto done; 2005 } 2006 2007 /* some wol options are enabled, so enter SUSPEND0 */ 2008 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2009 ret = smsc75xx_enter_suspend0(dev); 2010 2011 done: 2012 /* 2013 * TODO: resume() might need to handle the suspend failure 2014 * in system sleep 2015 */ 2016 if (ret && PMSG_IS_AUTO(message)) 2017 usbnet_resume(intf); 2018 return ret; 2019 } 2020 2021 static int smsc75xx_resume(struct usb_interface *intf) 2022 { 2023 struct usbnet *dev = usb_get_intfdata(intf); 2024 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2025 u8 suspend_flags = pdata->suspend_flags; 2026 int ret; 2027 u32 val; 2028 2029 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2030 2031 /* do this first to ensure it's cleared even in error case */ 2032 pdata->suspend_flags = 0; 2033 2034 if (suspend_flags & SUSPEND_ALLMODES) { 2035 /* Disable wakeup sources */ 2036 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2037 if (ret < 0) { 2038 netdev_warn(dev->net, "Error reading WUCSR\n"); 2039 return ret; 2040 } 2041 2042 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2043 | WUCSR_BCST_EN); 2044 2045 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2046 if (ret < 0) { 2047 netdev_warn(dev->net, "Error writing WUCSR\n"); 2048 return ret; 2049 } 2050 2051 /* clear wake-up status */ 2052 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2053 if (ret < 0) { 2054 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2055 return ret; 2056 } 2057 2058 val &= ~PMT_CTL_WOL_EN; 2059 val |= PMT_CTL_WUPS; 2060 2061 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2062 if (ret < 0) { 2063 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2064 return ret; 2065 } 2066 } 2067 2068 if (suspend_flags & SUSPEND_SUSPEND2) { 2069 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2070 2071 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2072 if (ret < 0) { 2073 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2074 return ret; 2075 } 2076 2077 val |= PMT_CTL_PHY_PWRUP; 2078 2079 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2080 if (ret < 0) { 2081 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2082 return ret; 2083 } 2084 } 2085 2086 ret = smsc75xx_wait_ready(dev, 1); 2087 if (ret < 0) { 2088 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2089 return ret; 2090 } 2091 2092 return usbnet_resume(intf); 2093 } 2094 2095 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2096 u32 rx_cmd_a, u32 rx_cmd_b) 2097 { 2098 if (!(dev->net->features & NETIF_F_RXCSUM) || 2099 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2100 skb->ip_summed = CHECKSUM_NONE; 2101 } else { 2102 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2103 skb->ip_summed = CHECKSUM_COMPLETE; 2104 } 2105 } 2106 2107 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2108 { 2109 /* This check is no longer done by usbnet */ 2110 if (skb->len < dev->net->hard_header_len) 2111 return 0; 2112 2113 while (skb->len > 0) { 2114 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2115 struct sk_buff *ax_skb; 2116 unsigned char *packet; 2117 2118 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2119 le32_to_cpus(&rx_cmd_a); 2120 skb_pull(skb, 4); 2121 2122 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2123 le32_to_cpus(&rx_cmd_b); 2124 skb_pull(skb, 4 + RXW_PADDING); 2125 2126 packet = skb->data; 2127 2128 /* get the packet length */ 2129 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2130 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2131 2132 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2133 netif_dbg(dev, rx_err, dev->net, 2134 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2135 dev->net->stats.rx_errors++; 2136 dev->net->stats.rx_dropped++; 2137 2138 if (rx_cmd_a & RX_CMD_A_FCS) 2139 dev->net->stats.rx_crc_errors++; 2140 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2141 dev->net->stats.rx_frame_errors++; 2142 } else { 2143 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2144 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2145 netif_dbg(dev, rx_err, dev->net, 2146 "size err rx_cmd_a=0x%08x\n", 2147 rx_cmd_a); 2148 return 0; 2149 } 2150 2151 /* last frame in this batch */ 2152 if (skb->len == size) { 2153 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2154 rx_cmd_b); 2155 2156 skb_trim(skb, skb->len - 4); /* remove fcs */ 2157 skb->truesize = size + sizeof(struct sk_buff); 2158 2159 return 1; 2160 } 2161 2162 ax_skb = skb_clone(skb, GFP_ATOMIC); 2163 if (unlikely(!ax_skb)) { 2164 netdev_warn(dev->net, "Error allocating skb\n"); 2165 return 0; 2166 } 2167 2168 ax_skb->len = size; 2169 ax_skb->data = packet; 2170 skb_set_tail_pointer(ax_skb, size); 2171 2172 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2173 rx_cmd_b); 2174 2175 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2176 ax_skb->truesize = size + sizeof(struct sk_buff); 2177 2178 usbnet_skb_return(dev, ax_skb); 2179 } 2180 2181 skb_pull(skb, size); 2182 2183 /* padding bytes before the next frame starts */ 2184 if (skb->len) 2185 skb_pull(skb, align_count); 2186 } 2187 2188 return 1; 2189 } 2190 2191 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2192 struct sk_buff *skb, gfp_t flags) 2193 { 2194 u32 tx_cmd_a, tx_cmd_b; 2195 2196 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2197 struct sk_buff *skb2 = 2198 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2199 dev_kfree_skb_any(skb); 2200 skb = skb2; 2201 if (!skb) 2202 return NULL; 2203 } 2204 2205 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2206 2207 if (skb->ip_summed == CHECKSUM_PARTIAL) 2208 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2209 2210 if (skb_is_gso(skb)) { 2211 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2212 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2213 2214 tx_cmd_a |= TX_CMD_A_LSO; 2215 } else { 2216 tx_cmd_b = 0; 2217 } 2218 2219 skb_push(skb, 4); 2220 cpu_to_le32s(&tx_cmd_b); 2221 memcpy(skb->data, &tx_cmd_b, 4); 2222 2223 skb_push(skb, 4); 2224 cpu_to_le32s(&tx_cmd_a); 2225 memcpy(skb->data, &tx_cmd_a, 4); 2226 2227 return skb; 2228 } 2229 2230 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2231 { 2232 dev->intf->needs_remote_wakeup = on; 2233 return 0; 2234 } 2235 2236 static const struct driver_info smsc75xx_info = { 2237 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2238 .bind = smsc75xx_bind, 2239 .unbind = smsc75xx_unbind, 2240 .link_reset = smsc75xx_link_reset, 2241 .reset = smsc75xx_reset, 2242 .rx_fixup = smsc75xx_rx_fixup, 2243 .tx_fixup = smsc75xx_tx_fixup, 2244 .status = smsc75xx_status, 2245 .manage_power = smsc75xx_manage_power, 2246 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2247 }; 2248 2249 static const struct usb_device_id products[] = { 2250 { 2251 /* SMSC7500 USB Gigabit Ethernet Device */ 2252 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2253 .driver_info = (unsigned long) &smsc75xx_info, 2254 }, 2255 { 2256 /* SMSC7500 USB Gigabit Ethernet Device */ 2257 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2258 .driver_info = (unsigned long) &smsc75xx_info, 2259 }, 2260 { }, /* END */ 2261 }; 2262 MODULE_DEVICE_TABLE(usb, products); 2263 2264 static struct usb_driver smsc75xx_driver = { 2265 .name = SMSC_CHIPNAME, 2266 .id_table = products, 2267 .probe = usbnet_probe, 2268 .suspend = smsc75xx_suspend, 2269 .resume = smsc75xx_resume, 2270 .reset_resume = smsc75xx_resume, 2271 .disconnect = usbnet_disconnect, 2272 .disable_hub_initiated_lpm = 1, 2273 .supports_autosuspend = 1, 2274 }; 2275 2276 module_usb_driver(smsc75xx_driver); 2277 2278 MODULE_AUTHOR("Nancy Lin"); 2279 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2280 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2281 MODULE_LICENSE("GPL"); 2282