1 /*************************************************************************** 2 * 3 * Copyright (C) 2007-2010 SMSC 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 * 19 *****************************************************************************/ 20 21 #include <linux/module.h> 22 #include <linux/kmod.h> 23 #include <linux/init.h> 24 #include <linux/netdevice.h> 25 #include <linux/etherdevice.h> 26 #include <linux/ethtool.h> 27 #include <linux/mii.h> 28 #include <linux/usb.h> 29 #include <linux/bitrev.h> 30 #include <linux/crc16.h> 31 #include <linux/crc32.h> 32 #include <linux/usb/usbnet.h> 33 #include <linux/slab.h> 34 #include "smsc75xx.h" 35 36 #define SMSC_CHIPNAME "smsc75xx" 37 #define SMSC_DRIVER_VERSION "1.0.0" 38 #define HS_USB_PKT_SIZE (512) 39 #define FS_USB_PKT_SIZE (64) 40 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 41 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 42 #define DEFAULT_BULK_IN_DELAY (0x00002000) 43 #define MAX_SINGLE_PACKET_SIZE (9000) 44 #define LAN75XX_EEPROM_MAGIC (0x7500) 45 #define EEPROM_MAC_OFFSET (0x01) 46 #define DEFAULT_TX_CSUM_ENABLE (true) 47 #define DEFAULT_RX_CSUM_ENABLE (true) 48 #define SMSC75XX_INTERNAL_PHY_ID (1) 49 #define SMSC75XX_TX_OVERHEAD (8) 50 #define MAX_RX_FIFO_SIZE (20 * 1024) 51 #define MAX_TX_FIFO_SIZE (12 * 1024) 52 #define USB_VENDOR_ID_SMSC (0x0424) 53 #define USB_PRODUCT_ID_LAN7500 (0x7500) 54 #define USB_PRODUCT_ID_LAN7505 (0x7505) 55 #define RXW_PADDING 2 56 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 57 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 58 59 #define SUSPEND_SUSPEND0 (0x01) 60 #define SUSPEND_SUSPEND1 (0x02) 61 #define SUSPEND_SUSPEND2 (0x04) 62 #define SUSPEND_SUSPEND3 (0x08) 63 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 64 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 65 66 struct smsc75xx_priv { 67 struct usbnet *dev; 68 u32 rfe_ctl; 69 u32 wolopts; 70 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 71 struct mutex dataport_mutex; 72 spinlock_t rfe_ctl_lock; 73 struct work_struct set_multicast; 74 u8 suspend_flags; 75 }; 76 77 struct usb_context { 78 struct usb_ctrlrequest req; 79 struct usbnet *dev; 80 }; 81 82 static bool turbo_mode = true; 83 module_param(turbo_mode, bool, 0644); 84 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 85 86 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 87 u32 *data, int in_pm) 88 { 89 u32 buf; 90 int ret; 91 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 92 93 BUG_ON(!dev); 94 95 if (!in_pm) 96 fn = usbnet_read_cmd; 97 else 98 fn = usbnet_read_cmd_nopm; 99 100 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 101 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 102 0, index, &buf, 4); 103 if (unlikely(ret < 0)) 104 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 105 index, ret); 106 107 le32_to_cpus(&buf); 108 *data = buf; 109 110 return ret; 111 } 112 113 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 114 u32 data, int in_pm) 115 { 116 u32 buf; 117 int ret; 118 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 119 120 BUG_ON(!dev); 121 122 if (!in_pm) 123 fn = usbnet_write_cmd; 124 else 125 fn = usbnet_write_cmd_nopm; 126 127 buf = data; 128 cpu_to_le32s(&buf); 129 130 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 131 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 132 0, index, &buf, 4); 133 if (unlikely(ret < 0)) 134 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 135 index, ret); 136 137 return ret; 138 } 139 140 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 141 u32 *data) 142 { 143 return __smsc75xx_read_reg(dev, index, data, 1); 144 } 145 146 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 147 u32 data) 148 { 149 return __smsc75xx_write_reg(dev, index, data, 1); 150 } 151 152 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 153 u32 *data) 154 { 155 return __smsc75xx_read_reg(dev, index, data, 0); 156 } 157 158 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 159 u32 data) 160 { 161 return __smsc75xx_write_reg(dev, index, data, 0); 162 } 163 164 /* Loop until the read is completed with timeout 165 * called with phy_mutex held */ 166 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 167 int in_pm) 168 { 169 unsigned long start_time = jiffies; 170 u32 val; 171 int ret; 172 173 do { 174 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 175 if (ret < 0) { 176 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 177 return ret; 178 } 179 180 if (!(val & MII_ACCESS_BUSY)) 181 return 0; 182 } while (!time_after(jiffies, start_time + HZ)); 183 184 return -EIO; 185 } 186 187 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 188 int in_pm) 189 { 190 struct usbnet *dev = netdev_priv(netdev); 191 u32 val, addr; 192 int ret; 193 194 mutex_lock(&dev->phy_mutex); 195 196 /* confirm MII not busy */ 197 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 198 if (ret < 0) { 199 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 200 goto done; 201 } 202 203 /* set the address, index & direction (read from PHY) */ 204 phy_id &= dev->mii.phy_id_mask; 205 idx &= dev->mii.reg_num_mask; 206 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 207 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 208 | MII_ACCESS_READ | MII_ACCESS_BUSY; 209 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 210 if (ret < 0) { 211 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 212 goto done; 213 } 214 215 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 216 if (ret < 0) { 217 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 218 goto done; 219 } 220 221 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 222 if (ret < 0) { 223 netdev_warn(dev->net, "Error reading MII_DATA\n"); 224 goto done; 225 } 226 227 ret = (u16)(val & 0xFFFF); 228 229 done: 230 mutex_unlock(&dev->phy_mutex); 231 return ret; 232 } 233 234 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 235 int idx, int regval, int in_pm) 236 { 237 struct usbnet *dev = netdev_priv(netdev); 238 u32 val, addr; 239 int ret; 240 241 mutex_lock(&dev->phy_mutex); 242 243 /* confirm MII not busy */ 244 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 245 if (ret < 0) { 246 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 247 goto done; 248 } 249 250 val = regval; 251 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 252 if (ret < 0) { 253 netdev_warn(dev->net, "Error writing MII_DATA\n"); 254 goto done; 255 } 256 257 /* set the address, index & direction (write to PHY) */ 258 phy_id &= dev->mii.phy_id_mask; 259 idx &= dev->mii.reg_num_mask; 260 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 261 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 262 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 263 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 264 if (ret < 0) { 265 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 266 goto done; 267 } 268 269 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 270 if (ret < 0) { 271 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 272 goto done; 273 } 274 275 done: 276 mutex_unlock(&dev->phy_mutex); 277 } 278 279 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 280 int idx) 281 { 282 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 283 } 284 285 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 286 int idx, int regval) 287 { 288 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 289 } 290 291 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 292 { 293 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 294 } 295 296 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 297 int regval) 298 { 299 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 300 } 301 302 static int smsc75xx_wait_eeprom(struct usbnet *dev) 303 { 304 unsigned long start_time = jiffies; 305 u32 val; 306 int ret; 307 308 do { 309 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 310 if (ret < 0) { 311 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 312 return ret; 313 } 314 315 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 316 break; 317 udelay(40); 318 } while (!time_after(jiffies, start_time + HZ)); 319 320 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 321 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 322 return -EIO; 323 } 324 325 return 0; 326 } 327 328 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 329 { 330 unsigned long start_time = jiffies; 331 u32 val; 332 int ret; 333 334 do { 335 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 336 if (ret < 0) { 337 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 338 return ret; 339 } 340 341 if (!(val & E2P_CMD_BUSY)) 342 return 0; 343 344 udelay(40); 345 } while (!time_after(jiffies, start_time + HZ)); 346 347 netdev_warn(dev->net, "EEPROM is busy\n"); 348 return -EIO; 349 } 350 351 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 352 u8 *data) 353 { 354 u32 val; 355 int i, ret; 356 357 BUG_ON(!dev); 358 BUG_ON(!data); 359 360 ret = smsc75xx_eeprom_confirm_not_busy(dev); 361 if (ret) 362 return ret; 363 364 for (i = 0; i < length; i++) { 365 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 366 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 367 if (ret < 0) { 368 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 369 return ret; 370 } 371 372 ret = smsc75xx_wait_eeprom(dev); 373 if (ret < 0) 374 return ret; 375 376 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 377 if (ret < 0) { 378 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 379 return ret; 380 } 381 382 data[i] = val & 0xFF; 383 offset++; 384 } 385 386 return 0; 387 } 388 389 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 390 u8 *data) 391 { 392 u32 val; 393 int i, ret; 394 395 BUG_ON(!dev); 396 BUG_ON(!data); 397 398 ret = smsc75xx_eeprom_confirm_not_busy(dev); 399 if (ret) 400 return ret; 401 402 /* Issue write/erase enable command */ 403 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 404 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 405 if (ret < 0) { 406 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 407 return ret; 408 } 409 410 ret = smsc75xx_wait_eeprom(dev); 411 if (ret < 0) 412 return ret; 413 414 for (i = 0; i < length; i++) { 415 416 /* Fill data register */ 417 val = data[i]; 418 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 419 if (ret < 0) { 420 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 421 return ret; 422 } 423 424 /* Send "write" command */ 425 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 426 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 427 if (ret < 0) { 428 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 429 return ret; 430 } 431 432 ret = smsc75xx_wait_eeprom(dev); 433 if (ret < 0) 434 return ret; 435 436 offset++; 437 } 438 439 return 0; 440 } 441 442 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 443 { 444 int i, ret; 445 446 for (i = 0; i < 100; i++) { 447 u32 dp_sel; 448 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 449 if (ret < 0) { 450 netdev_warn(dev->net, "Error reading DP_SEL\n"); 451 return ret; 452 } 453 454 if (dp_sel & DP_SEL_DPRDY) 455 return 0; 456 457 udelay(40); 458 } 459 460 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 461 462 return -EIO; 463 } 464 465 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 466 u32 length, u32 *buf) 467 { 468 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 469 u32 dp_sel; 470 int i, ret; 471 472 mutex_lock(&pdata->dataport_mutex); 473 474 ret = smsc75xx_dataport_wait_not_busy(dev); 475 if (ret < 0) { 476 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 477 goto done; 478 } 479 480 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 481 if (ret < 0) { 482 netdev_warn(dev->net, "Error reading DP_SEL\n"); 483 goto done; 484 } 485 486 dp_sel &= ~DP_SEL_RSEL; 487 dp_sel |= ram_select; 488 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 489 if (ret < 0) { 490 netdev_warn(dev->net, "Error writing DP_SEL\n"); 491 goto done; 492 } 493 494 for (i = 0; i < length; i++) { 495 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 496 if (ret < 0) { 497 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 498 goto done; 499 } 500 501 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 502 if (ret < 0) { 503 netdev_warn(dev->net, "Error writing DP_DATA\n"); 504 goto done; 505 } 506 507 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 508 if (ret < 0) { 509 netdev_warn(dev->net, "Error writing DP_CMD\n"); 510 goto done; 511 } 512 513 ret = smsc75xx_dataport_wait_not_busy(dev); 514 if (ret < 0) { 515 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 516 goto done; 517 } 518 } 519 520 done: 521 mutex_unlock(&pdata->dataport_mutex); 522 return ret; 523 } 524 525 /* returns hash bit number for given MAC address */ 526 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 527 { 528 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 529 } 530 531 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 532 { 533 struct smsc75xx_priv *pdata = 534 container_of(param, struct smsc75xx_priv, set_multicast); 535 struct usbnet *dev = pdata->dev; 536 int ret; 537 538 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 539 pdata->rfe_ctl); 540 541 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 542 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 543 544 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 545 if (ret < 0) 546 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 547 } 548 549 static void smsc75xx_set_multicast(struct net_device *netdev) 550 { 551 struct usbnet *dev = netdev_priv(netdev); 552 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 553 unsigned long flags; 554 int i; 555 556 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 557 558 pdata->rfe_ctl &= 559 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 560 pdata->rfe_ctl |= RFE_CTL_AB; 561 562 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 563 pdata->multicast_hash_table[i] = 0; 564 565 if (dev->net->flags & IFF_PROMISC) { 566 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 567 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 568 } else if (dev->net->flags & IFF_ALLMULTI) { 569 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 570 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 571 } else if (!netdev_mc_empty(dev->net)) { 572 struct netdev_hw_addr *ha; 573 574 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 575 576 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 577 578 netdev_for_each_mc_addr(ha, netdev) { 579 u32 bitnum = smsc75xx_hash(ha->addr); 580 pdata->multicast_hash_table[bitnum / 32] |= 581 (1 << (bitnum % 32)); 582 } 583 } else { 584 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 585 pdata->rfe_ctl |= RFE_CTL_DPF; 586 } 587 588 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 589 590 /* defer register writes to a sleepable context */ 591 schedule_work(&pdata->set_multicast); 592 } 593 594 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 595 u16 lcladv, u16 rmtadv) 596 { 597 u32 flow = 0, fct_flow = 0; 598 int ret; 599 600 if (duplex == DUPLEX_FULL) { 601 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 602 603 if (cap & FLOW_CTRL_TX) { 604 flow = (FLOW_TX_FCEN | 0xFFFF); 605 /* set fct_flow thresholds to 20% and 80% */ 606 fct_flow = (8 << 8) | 32; 607 } 608 609 if (cap & FLOW_CTRL_RX) 610 flow |= FLOW_RX_FCEN; 611 612 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 613 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 614 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 615 } else { 616 netif_dbg(dev, link, dev->net, "half duplex\n"); 617 } 618 619 ret = smsc75xx_write_reg(dev, FLOW, flow); 620 if (ret < 0) { 621 netdev_warn(dev->net, "Error writing FLOW\n"); 622 return ret; 623 } 624 625 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 626 if (ret < 0) { 627 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 628 return ret; 629 } 630 631 return 0; 632 } 633 634 static int smsc75xx_link_reset(struct usbnet *dev) 635 { 636 struct mii_if_info *mii = &dev->mii; 637 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 638 u16 lcladv, rmtadv; 639 int ret; 640 641 /* write to clear phy interrupt status */ 642 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 643 PHY_INT_SRC_CLEAR_ALL); 644 645 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 646 if (ret < 0) { 647 netdev_warn(dev->net, "Error writing INT_STS\n"); 648 return ret; 649 } 650 651 mii_check_media(mii, 1, 1); 652 mii_ethtool_gset(&dev->mii, &ecmd); 653 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 654 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 655 656 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 657 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 658 659 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 660 } 661 662 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 663 { 664 u32 intdata; 665 666 if (urb->actual_length != 4) { 667 netdev_warn(dev->net, "unexpected urb length %d\n", 668 urb->actual_length); 669 return; 670 } 671 672 memcpy(&intdata, urb->transfer_buffer, 4); 673 le32_to_cpus(&intdata); 674 675 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 676 677 if (intdata & INT_ENP_PHY_INT) 678 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 679 else 680 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 681 intdata); 682 } 683 684 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 685 { 686 return MAX_EEPROM_SIZE; 687 } 688 689 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 690 struct ethtool_eeprom *ee, u8 *data) 691 { 692 struct usbnet *dev = netdev_priv(netdev); 693 694 ee->magic = LAN75XX_EEPROM_MAGIC; 695 696 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 697 } 698 699 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 700 struct ethtool_eeprom *ee, u8 *data) 701 { 702 struct usbnet *dev = netdev_priv(netdev); 703 704 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 705 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 706 ee->magic); 707 return -EINVAL; 708 } 709 710 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 711 } 712 713 static void smsc75xx_ethtool_get_wol(struct net_device *net, 714 struct ethtool_wolinfo *wolinfo) 715 { 716 struct usbnet *dev = netdev_priv(net); 717 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 718 719 wolinfo->supported = SUPPORTED_WAKE; 720 wolinfo->wolopts = pdata->wolopts; 721 } 722 723 static int smsc75xx_ethtool_set_wol(struct net_device *net, 724 struct ethtool_wolinfo *wolinfo) 725 { 726 struct usbnet *dev = netdev_priv(net); 727 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 728 int ret; 729 730 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 731 732 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 733 if (ret < 0) 734 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 735 736 return ret; 737 } 738 739 static const struct ethtool_ops smsc75xx_ethtool_ops = { 740 .get_link = usbnet_get_link, 741 .nway_reset = usbnet_nway_reset, 742 .get_drvinfo = usbnet_get_drvinfo, 743 .get_msglevel = usbnet_get_msglevel, 744 .set_msglevel = usbnet_set_msglevel, 745 .get_settings = usbnet_get_settings, 746 .set_settings = usbnet_set_settings, 747 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 748 .get_eeprom = smsc75xx_ethtool_get_eeprom, 749 .set_eeprom = smsc75xx_ethtool_set_eeprom, 750 .get_wol = smsc75xx_ethtool_get_wol, 751 .set_wol = smsc75xx_ethtool_set_wol, 752 }; 753 754 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 755 { 756 struct usbnet *dev = netdev_priv(netdev); 757 758 if (!netif_running(netdev)) 759 return -EINVAL; 760 761 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 762 } 763 764 static void smsc75xx_init_mac_address(struct usbnet *dev) 765 { 766 /* try reading mac address from EEPROM */ 767 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 768 dev->net->dev_addr) == 0) { 769 if (is_valid_ether_addr(dev->net->dev_addr)) { 770 /* eeprom values are valid so use them */ 771 netif_dbg(dev, ifup, dev->net, 772 "MAC address read from EEPROM\n"); 773 return; 774 } 775 } 776 777 /* no eeprom, or eeprom values are invalid. generate random MAC */ 778 eth_hw_addr_random(dev->net); 779 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 780 } 781 782 static int smsc75xx_set_mac_address(struct usbnet *dev) 783 { 784 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 785 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 786 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 787 788 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 789 if (ret < 0) { 790 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 791 return ret; 792 } 793 794 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 795 if (ret < 0) { 796 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 797 return ret; 798 } 799 800 addr_hi |= ADDR_FILTX_FB_VALID; 801 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 802 if (ret < 0) { 803 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 804 return ret; 805 } 806 807 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 808 if (ret < 0) 809 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 810 811 return ret; 812 } 813 814 static int smsc75xx_phy_initialize(struct usbnet *dev) 815 { 816 int bmcr, ret, timeout = 0; 817 818 /* Initialize MII structure */ 819 dev->mii.dev = dev->net; 820 dev->mii.mdio_read = smsc75xx_mdio_read; 821 dev->mii.mdio_write = smsc75xx_mdio_write; 822 dev->mii.phy_id_mask = 0x1f; 823 dev->mii.reg_num_mask = 0x1f; 824 dev->mii.supports_gmii = 1; 825 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 826 827 /* reset phy and wait for reset to complete */ 828 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 829 830 do { 831 msleep(10); 832 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 833 if (bmcr < 0) { 834 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 835 return bmcr; 836 } 837 timeout++; 838 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 839 840 if (timeout >= 100) { 841 netdev_warn(dev->net, "timeout on PHY Reset\n"); 842 return -EIO; 843 } 844 845 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 846 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 847 ADVERTISE_PAUSE_ASYM); 848 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 849 ADVERTISE_1000FULL); 850 851 /* read and write to clear phy interrupt status */ 852 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 853 if (ret < 0) { 854 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 855 return ret; 856 } 857 858 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 859 860 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 861 PHY_INT_MASK_DEFAULT); 862 mii_nway_restart(&dev->mii); 863 864 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 865 return 0; 866 } 867 868 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 869 { 870 int ret = 0; 871 u32 buf; 872 bool rxenabled; 873 874 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 875 if (ret < 0) { 876 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 877 return ret; 878 } 879 880 rxenabled = ((buf & MAC_RX_RXEN) != 0); 881 882 if (rxenabled) { 883 buf &= ~MAC_RX_RXEN; 884 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 885 if (ret < 0) { 886 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 887 return ret; 888 } 889 } 890 891 /* add 4 to size for FCS */ 892 buf &= ~MAC_RX_MAX_SIZE; 893 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 894 895 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 896 if (ret < 0) { 897 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 898 return ret; 899 } 900 901 if (rxenabled) { 902 buf |= MAC_RX_RXEN; 903 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 904 if (ret < 0) { 905 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 906 return ret; 907 } 908 } 909 910 return 0; 911 } 912 913 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 914 { 915 struct usbnet *dev = netdev_priv(netdev); 916 int ret; 917 918 if (new_mtu > MAX_SINGLE_PACKET_SIZE) 919 return -EINVAL; 920 921 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 922 if (ret < 0) { 923 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 924 return ret; 925 } 926 927 return usbnet_change_mtu(netdev, new_mtu); 928 } 929 930 /* Enable or disable Rx checksum offload engine */ 931 static int smsc75xx_set_features(struct net_device *netdev, 932 netdev_features_t features) 933 { 934 struct usbnet *dev = netdev_priv(netdev); 935 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 936 unsigned long flags; 937 int ret; 938 939 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 940 941 if (features & NETIF_F_RXCSUM) 942 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 943 else 944 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 945 946 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 947 /* it's racing here! */ 948 949 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 950 if (ret < 0) 951 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 952 953 return ret; 954 } 955 956 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 957 { 958 int timeout = 0; 959 960 do { 961 u32 buf; 962 int ret; 963 964 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 965 966 if (ret < 0) { 967 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 968 return ret; 969 } 970 971 if (buf & PMT_CTL_DEV_RDY) 972 return 0; 973 974 msleep(10); 975 timeout++; 976 } while (timeout < 100); 977 978 netdev_warn(dev->net, "timeout waiting for device ready\n"); 979 return -EIO; 980 } 981 982 static int smsc75xx_reset(struct usbnet *dev) 983 { 984 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 985 u32 buf; 986 int ret = 0, timeout; 987 988 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 989 990 ret = smsc75xx_wait_ready(dev, 0); 991 if (ret < 0) { 992 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 993 return ret; 994 } 995 996 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 997 if (ret < 0) { 998 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 999 return ret; 1000 } 1001 1002 buf |= HW_CFG_LRST; 1003 1004 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1005 if (ret < 0) { 1006 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1007 return ret; 1008 } 1009 1010 timeout = 0; 1011 do { 1012 msleep(10); 1013 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1014 if (ret < 0) { 1015 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1016 return ret; 1017 } 1018 timeout++; 1019 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1020 1021 if (timeout >= 100) { 1022 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1023 return -EIO; 1024 } 1025 1026 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1027 1028 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1029 if (ret < 0) { 1030 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1031 return ret; 1032 } 1033 1034 buf |= PMT_CTL_PHY_RST; 1035 1036 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1037 if (ret < 0) { 1038 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1039 return ret; 1040 } 1041 1042 timeout = 0; 1043 do { 1044 msleep(10); 1045 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1046 if (ret < 0) { 1047 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1048 return ret; 1049 } 1050 timeout++; 1051 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1052 1053 if (timeout >= 100) { 1054 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1055 return -EIO; 1056 } 1057 1058 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1059 1060 ret = smsc75xx_set_mac_address(dev); 1061 if (ret < 0) { 1062 netdev_warn(dev->net, "Failed to set mac address\n"); 1063 return ret; 1064 } 1065 1066 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1067 dev->net->dev_addr); 1068 1069 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1070 if (ret < 0) { 1071 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1072 return ret; 1073 } 1074 1075 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1076 buf); 1077 1078 buf |= HW_CFG_BIR; 1079 1080 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1081 if (ret < 0) { 1082 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1083 return ret; 1084 } 1085 1086 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1087 if (ret < 0) { 1088 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1089 return ret; 1090 } 1091 1092 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1093 buf); 1094 1095 if (!turbo_mode) { 1096 buf = 0; 1097 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1098 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1099 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1100 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1101 } else { 1102 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1103 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1104 } 1105 1106 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1107 (ulong)dev->rx_urb_size); 1108 1109 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1110 if (ret < 0) { 1111 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1112 return ret; 1113 } 1114 1115 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1116 if (ret < 0) { 1117 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1118 return ret; 1119 } 1120 1121 netif_dbg(dev, ifup, dev->net, 1122 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1123 1124 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1125 if (ret < 0) { 1126 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1127 return ret; 1128 } 1129 1130 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1131 if (ret < 0) { 1132 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1133 return ret; 1134 } 1135 1136 netif_dbg(dev, ifup, dev->net, 1137 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1138 1139 if (turbo_mode) { 1140 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1141 if (ret < 0) { 1142 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1143 return ret; 1144 } 1145 1146 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1147 1148 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1149 1150 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1151 if (ret < 0) { 1152 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1153 return ret; 1154 } 1155 1156 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1157 if (ret < 0) { 1158 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1159 return ret; 1160 } 1161 1162 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1163 } 1164 1165 /* set FIFO sizes */ 1166 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1167 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1168 if (ret < 0) { 1169 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1170 return ret; 1171 } 1172 1173 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1174 1175 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1176 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1177 if (ret < 0) { 1178 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1179 return ret; 1180 } 1181 1182 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1183 1184 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1185 if (ret < 0) { 1186 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1187 return ret; 1188 } 1189 1190 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1191 if (ret < 0) { 1192 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1193 return ret; 1194 } 1195 1196 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1197 1198 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1199 if (ret < 0) { 1200 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1201 return ret; 1202 } 1203 1204 /* only set default GPIO/LED settings if no EEPROM is detected */ 1205 if (!(buf & E2P_CMD_LOADED)) { 1206 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1207 if (ret < 0) { 1208 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1209 return ret; 1210 } 1211 1212 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1213 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1214 1215 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1216 if (ret < 0) { 1217 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1218 return ret; 1219 } 1220 } 1221 1222 ret = smsc75xx_write_reg(dev, FLOW, 0); 1223 if (ret < 0) { 1224 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1225 return ret; 1226 } 1227 1228 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1229 if (ret < 0) { 1230 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1231 return ret; 1232 } 1233 1234 /* Don't need rfe_ctl_lock during initialisation */ 1235 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1236 if (ret < 0) { 1237 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1238 return ret; 1239 } 1240 1241 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1242 1243 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1244 if (ret < 0) { 1245 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1246 return ret; 1247 } 1248 1249 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1250 if (ret < 0) { 1251 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1252 return ret; 1253 } 1254 1255 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1256 pdata->rfe_ctl); 1257 1258 /* Enable or disable checksum offload engines */ 1259 smsc75xx_set_features(dev->net, dev->net->features); 1260 1261 smsc75xx_set_multicast(dev->net); 1262 1263 ret = smsc75xx_phy_initialize(dev); 1264 if (ret < 0) { 1265 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1266 return ret; 1267 } 1268 1269 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1270 if (ret < 0) { 1271 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1272 return ret; 1273 } 1274 1275 /* enable PHY interrupts */ 1276 buf |= INT_ENP_PHY_INT; 1277 1278 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1279 if (ret < 0) { 1280 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1281 return ret; 1282 } 1283 1284 /* allow mac to detect speed and duplex from phy */ 1285 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1286 if (ret < 0) { 1287 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1288 return ret; 1289 } 1290 1291 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1292 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1293 if (ret < 0) { 1294 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1295 return ret; 1296 } 1297 1298 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1299 if (ret < 0) { 1300 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1301 return ret; 1302 } 1303 1304 buf |= MAC_TX_TXEN; 1305 1306 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1307 if (ret < 0) { 1308 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1309 return ret; 1310 } 1311 1312 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1313 1314 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1315 if (ret < 0) { 1316 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1317 return ret; 1318 } 1319 1320 buf |= FCT_TX_CTL_EN; 1321 1322 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1323 if (ret < 0) { 1324 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1325 return ret; 1326 } 1327 1328 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1329 1330 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1331 if (ret < 0) { 1332 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1333 return ret; 1334 } 1335 1336 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1337 if (ret < 0) { 1338 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1339 return ret; 1340 } 1341 1342 buf |= MAC_RX_RXEN; 1343 1344 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1345 if (ret < 0) { 1346 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1347 return ret; 1348 } 1349 1350 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1351 1352 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1353 if (ret < 0) { 1354 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1355 return ret; 1356 } 1357 1358 buf |= FCT_RX_CTL_EN; 1359 1360 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1361 if (ret < 0) { 1362 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1363 return ret; 1364 } 1365 1366 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1367 1368 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1369 return 0; 1370 } 1371 1372 static const struct net_device_ops smsc75xx_netdev_ops = { 1373 .ndo_open = usbnet_open, 1374 .ndo_stop = usbnet_stop, 1375 .ndo_start_xmit = usbnet_start_xmit, 1376 .ndo_tx_timeout = usbnet_tx_timeout, 1377 .ndo_change_mtu = smsc75xx_change_mtu, 1378 .ndo_set_mac_address = eth_mac_addr, 1379 .ndo_validate_addr = eth_validate_addr, 1380 .ndo_do_ioctl = smsc75xx_ioctl, 1381 .ndo_set_rx_mode = smsc75xx_set_multicast, 1382 .ndo_set_features = smsc75xx_set_features, 1383 }; 1384 1385 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1386 { 1387 struct smsc75xx_priv *pdata = NULL; 1388 int ret; 1389 1390 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1391 1392 ret = usbnet_get_endpoints(dev, intf); 1393 if (ret < 0) { 1394 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1395 return ret; 1396 } 1397 1398 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1399 GFP_KERNEL); 1400 1401 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1402 if (!pdata) 1403 return -ENOMEM; 1404 1405 pdata->dev = dev; 1406 1407 spin_lock_init(&pdata->rfe_ctl_lock); 1408 mutex_init(&pdata->dataport_mutex); 1409 1410 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1411 1412 if (DEFAULT_TX_CSUM_ENABLE) 1413 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1414 1415 if (DEFAULT_RX_CSUM_ENABLE) 1416 dev->net->features |= NETIF_F_RXCSUM; 1417 1418 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1419 NETIF_F_RXCSUM; 1420 1421 ret = smsc75xx_wait_ready(dev, 0); 1422 if (ret < 0) { 1423 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1424 return ret; 1425 } 1426 1427 smsc75xx_init_mac_address(dev); 1428 1429 /* Init all registers */ 1430 ret = smsc75xx_reset(dev); 1431 if (ret < 0) { 1432 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1433 return ret; 1434 } 1435 1436 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1437 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1438 dev->net->flags |= IFF_MULTICAST; 1439 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1440 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1441 return 0; 1442 } 1443 1444 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1445 { 1446 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1447 if (pdata) { 1448 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1449 kfree(pdata); 1450 pdata = NULL; 1451 dev->data[0] = 0; 1452 } 1453 } 1454 1455 static u16 smsc_crc(const u8 *buffer, size_t len) 1456 { 1457 return bitrev16(crc16(0xFFFF, buffer, len)); 1458 } 1459 1460 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1461 u32 wuf_mask1) 1462 { 1463 int cfg_base = WUF_CFGX + filter * 4; 1464 int mask_base = WUF_MASKX + filter * 16; 1465 int ret; 1466 1467 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1468 if (ret < 0) { 1469 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1470 return ret; 1471 } 1472 1473 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1474 if (ret < 0) { 1475 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1476 return ret; 1477 } 1478 1479 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1480 if (ret < 0) { 1481 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1482 return ret; 1483 } 1484 1485 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1486 if (ret < 0) { 1487 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1488 return ret; 1489 } 1490 1491 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1492 if (ret < 0) { 1493 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1494 return ret; 1495 } 1496 1497 return 0; 1498 } 1499 1500 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1501 { 1502 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1503 u32 val; 1504 int ret; 1505 1506 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1507 if (ret < 0) { 1508 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1509 return ret; 1510 } 1511 1512 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1513 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1514 1515 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1516 if (ret < 0) { 1517 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1518 return ret; 1519 } 1520 1521 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1522 1523 return 0; 1524 } 1525 1526 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1527 { 1528 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1529 u32 val; 1530 int ret; 1531 1532 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1533 if (ret < 0) { 1534 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1535 return ret; 1536 } 1537 1538 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1539 val |= PMT_CTL_SUS_MODE_1; 1540 1541 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1542 if (ret < 0) { 1543 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1544 return ret; 1545 } 1546 1547 /* clear wol status, enable energy detection */ 1548 val &= ~PMT_CTL_WUPS; 1549 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1550 1551 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1552 if (ret < 0) { 1553 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1554 return ret; 1555 } 1556 1557 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1558 1559 return 0; 1560 } 1561 1562 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1563 { 1564 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1565 u32 val; 1566 int ret; 1567 1568 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1569 if (ret < 0) { 1570 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1571 return ret; 1572 } 1573 1574 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1575 val |= PMT_CTL_SUS_MODE_2; 1576 1577 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1578 if (ret < 0) { 1579 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1580 return ret; 1581 } 1582 1583 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1584 1585 return 0; 1586 } 1587 1588 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1589 { 1590 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1591 u32 val; 1592 int ret; 1593 1594 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1595 if (ret < 0) { 1596 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1597 return ret; 1598 } 1599 1600 if (val & FCT_RX_CTL_RXUSED) { 1601 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1602 return -EBUSY; 1603 } 1604 1605 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1606 if (ret < 0) { 1607 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1608 return ret; 1609 } 1610 1611 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1612 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1613 1614 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1615 if (ret < 0) { 1616 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1617 return ret; 1618 } 1619 1620 /* clear wol status */ 1621 val &= ~PMT_CTL_WUPS; 1622 val |= PMT_CTL_WUPS_WOL; 1623 1624 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1625 if (ret < 0) { 1626 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1627 return ret; 1628 } 1629 1630 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1631 1632 return 0; 1633 } 1634 1635 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1636 { 1637 struct mii_if_info *mii = &dev->mii; 1638 int ret; 1639 1640 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1641 1642 /* read to clear */ 1643 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1644 if (ret < 0) { 1645 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1646 return ret; 1647 } 1648 1649 /* enable interrupt source */ 1650 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1651 if (ret < 0) { 1652 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1653 return ret; 1654 } 1655 1656 ret |= mask; 1657 1658 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1659 1660 return 0; 1661 } 1662 1663 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1664 { 1665 struct mii_if_info *mii = &dev->mii; 1666 int ret; 1667 1668 /* first, a dummy read, needed to latch some MII phys */ 1669 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1670 if (ret < 0) { 1671 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1672 return ret; 1673 } 1674 1675 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1676 if (ret < 0) { 1677 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1678 return ret; 1679 } 1680 1681 return !!(ret & BMSR_LSTATUS); 1682 } 1683 1684 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1685 { 1686 int ret; 1687 1688 if (!netif_running(dev->net)) { 1689 /* interface is ifconfig down so fully power down hw */ 1690 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1691 return smsc75xx_enter_suspend2(dev); 1692 } 1693 1694 if (!link_up) { 1695 /* link is down so enter EDPD mode */ 1696 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1697 1698 /* enable PHY wakeup events for if cable is attached */ 1699 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1700 PHY_INT_MASK_ANEG_COMP); 1701 if (ret < 0) { 1702 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1703 return ret; 1704 } 1705 1706 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1707 return smsc75xx_enter_suspend1(dev); 1708 } 1709 1710 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1711 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1712 PHY_INT_MASK_LINK_DOWN); 1713 if (ret < 0) { 1714 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1715 return ret; 1716 } 1717 1718 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1719 return smsc75xx_enter_suspend3(dev); 1720 } 1721 1722 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1723 { 1724 struct usbnet *dev = usb_get_intfdata(intf); 1725 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1726 u32 val, link_up; 1727 int ret; 1728 1729 ret = usbnet_suspend(intf, message); 1730 if (ret < 0) { 1731 netdev_warn(dev->net, "usbnet_suspend error\n"); 1732 return ret; 1733 } 1734 1735 if (pdata->suspend_flags) { 1736 netdev_warn(dev->net, "error during last resume\n"); 1737 pdata->suspend_flags = 0; 1738 } 1739 1740 /* determine if link is up using only _nopm functions */ 1741 link_up = smsc75xx_link_ok_nopm(dev); 1742 1743 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1744 ret = smsc75xx_autosuspend(dev, link_up); 1745 goto done; 1746 } 1747 1748 /* if we get this far we're not autosuspending */ 1749 /* if no wol options set, or if link is down and we're not waking on 1750 * PHY activity, enter lowest power SUSPEND2 mode 1751 */ 1752 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1753 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1754 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1755 1756 /* disable energy detect (link up) & wake up events */ 1757 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1758 if (ret < 0) { 1759 netdev_warn(dev->net, "Error reading WUCSR\n"); 1760 goto done; 1761 } 1762 1763 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1764 1765 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1766 if (ret < 0) { 1767 netdev_warn(dev->net, "Error writing WUCSR\n"); 1768 goto done; 1769 } 1770 1771 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1772 if (ret < 0) { 1773 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1774 goto done; 1775 } 1776 1777 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1778 1779 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1780 if (ret < 0) { 1781 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1782 goto done; 1783 } 1784 1785 ret = smsc75xx_enter_suspend2(dev); 1786 goto done; 1787 } 1788 1789 if (pdata->wolopts & WAKE_PHY) { 1790 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1791 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1792 if (ret < 0) { 1793 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1794 goto done; 1795 } 1796 1797 /* if link is down then configure EDPD and enter SUSPEND1, 1798 * otherwise enter SUSPEND0 below 1799 */ 1800 if (!link_up) { 1801 struct mii_if_info *mii = &dev->mii; 1802 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1803 1804 /* enable energy detect power-down mode */ 1805 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1806 PHY_MODE_CTRL_STS); 1807 if (ret < 0) { 1808 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1809 goto done; 1810 } 1811 1812 ret |= MODE_CTRL_STS_EDPWRDOWN; 1813 1814 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1815 PHY_MODE_CTRL_STS, ret); 1816 1817 /* enter SUSPEND1 mode */ 1818 ret = smsc75xx_enter_suspend1(dev); 1819 goto done; 1820 } 1821 } 1822 1823 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1824 int i, filter = 0; 1825 1826 /* disable all filters */ 1827 for (i = 0; i < WUF_NUM; i++) { 1828 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1829 if (ret < 0) { 1830 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1831 goto done; 1832 } 1833 } 1834 1835 if (pdata->wolopts & WAKE_MCAST) { 1836 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1837 netdev_info(dev->net, "enabling multicast detection\n"); 1838 1839 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1840 | smsc_crc(mcast, 3); 1841 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1842 if (ret < 0) { 1843 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1844 goto done; 1845 } 1846 } 1847 1848 if (pdata->wolopts & WAKE_ARP) { 1849 const u8 arp[] = {0x08, 0x06}; 1850 netdev_info(dev->net, "enabling ARP detection\n"); 1851 1852 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1853 | smsc_crc(arp, 2); 1854 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1855 if (ret < 0) { 1856 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1857 goto done; 1858 } 1859 } 1860 1861 /* clear any pending pattern match packet status */ 1862 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1863 if (ret < 0) { 1864 netdev_warn(dev->net, "Error reading WUCSR\n"); 1865 goto done; 1866 } 1867 1868 val |= WUCSR_WUFR; 1869 1870 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1871 if (ret < 0) { 1872 netdev_warn(dev->net, "Error writing WUCSR\n"); 1873 goto done; 1874 } 1875 1876 netdev_info(dev->net, "enabling packet match detection\n"); 1877 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1878 if (ret < 0) { 1879 netdev_warn(dev->net, "Error reading WUCSR\n"); 1880 goto done; 1881 } 1882 1883 val |= WUCSR_WUEN; 1884 1885 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1886 if (ret < 0) { 1887 netdev_warn(dev->net, "Error writing WUCSR\n"); 1888 goto done; 1889 } 1890 } else { 1891 netdev_info(dev->net, "disabling packet match detection\n"); 1892 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1893 if (ret < 0) { 1894 netdev_warn(dev->net, "Error reading WUCSR\n"); 1895 goto done; 1896 } 1897 1898 val &= ~WUCSR_WUEN; 1899 1900 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1901 if (ret < 0) { 1902 netdev_warn(dev->net, "Error writing WUCSR\n"); 1903 goto done; 1904 } 1905 } 1906 1907 /* disable magic, bcast & unicast wakeup sources */ 1908 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1909 if (ret < 0) { 1910 netdev_warn(dev->net, "Error reading WUCSR\n"); 1911 goto done; 1912 } 1913 1914 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1915 1916 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1917 if (ret < 0) { 1918 netdev_warn(dev->net, "Error writing WUCSR\n"); 1919 goto done; 1920 } 1921 1922 if (pdata->wolopts & WAKE_PHY) { 1923 netdev_info(dev->net, "enabling PHY wakeup\n"); 1924 1925 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1926 if (ret < 0) { 1927 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1928 goto done; 1929 } 1930 1931 /* clear wol status, enable energy detection */ 1932 val &= ~PMT_CTL_WUPS; 1933 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1934 1935 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1936 if (ret < 0) { 1937 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1938 goto done; 1939 } 1940 } 1941 1942 if (pdata->wolopts & WAKE_MAGIC) { 1943 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1944 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1945 if (ret < 0) { 1946 netdev_warn(dev->net, "Error reading WUCSR\n"); 1947 goto done; 1948 } 1949 1950 /* clear any pending magic packet status */ 1951 val |= WUCSR_MPR | WUCSR_MPEN; 1952 1953 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1954 if (ret < 0) { 1955 netdev_warn(dev->net, "Error writing WUCSR\n"); 1956 goto done; 1957 } 1958 } 1959 1960 if (pdata->wolopts & WAKE_BCAST) { 1961 netdev_info(dev->net, "enabling broadcast detection\n"); 1962 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1963 if (ret < 0) { 1964 netdev_warn(dev->net, "Error reading WUCSR\n"); 1965 goto done; 1966 } 1967 1968 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1969 1970 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1971 if (ret < 0) { 1972 netdev_warn(dev->net, "Error writing WUCSR\n"); 1973 goto done; 1974 } 1975 } 1976 1977 if (pdata->wolopts & WAKE_UCAST) { 1978 netdev_info(dev->net, "enabling unicast detection\n"); 1979 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1980 if (ret < 0) { 1981 netdev_warn(dev->net, "Error reading WUCSR\n"); 1982 goto done; 1983 } 1984 1985 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1986 1987 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1988 if (ret < 0) { 1989 netdev_warn(dev->net, "Error writing WUCSR\n"); 1990 goto done; 1991 } 1992 } 1993 1994 /* enable receiver to enable frame reception */ 1995 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 1996 if (ret < 0) { 1997 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1998 goto done; 1999 } 2000 2001 val |= MAC_RX_RXEN; 2002 2003 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2004 if (ret < 0) { 2005 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2006 goto done; 2007 } 2008 2009 /* some wol options are enabled, so enter SUSPEND0 */ 2010 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2011 ret = smsc75xx_enter_suspend0(dev); 2012 2013 done: 2014 /* 2015 * TODO: resume() might need to handle the suspend failure 2016 * in system sleep 2017 */ 2018 if (ret && PMSG_IS_AUTO(message)) 2019 usbnet_resume(intf); 2020 return ret; 2021 } 2022 2023 static int smsc75xx_resume(struct usb_interface *intf) 2024 { 2025 struct usbnet *dev = usb_get_intfdata(intf); 2026 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2027 u8 suspend_flags = pdata->suspend_flags; 2028 int ret; 2029 u32 val; 2030 2031 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2032 2033 /* do this first to ensure it's cleared even in error case */ 2034 pdata->suspend_flags = 0; 2035 2036 if (suspend_flags & SUSPEND_ALLMODES) { 2037 /* Disable wakeup sources */ 2038 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2039 if (ret < 0) { 2040 netdev_warn(dev->net, "Error reading WUCSR\n"); 2041 return ret; 2042 } 2043 2044 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2045 | WUCSR_BCST_EN); 2046 2047 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2048 if (ret < 0) { 2049 netdev_warn(dev->net, "Error writing WUCSR\n"); 2050 return ret; 2051 } 2052 2053 /* clear wake-up status */ 2054 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2055 if (ret < 0) { 2056 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2057 return ret; 2058 } 2059 2060 val &= ~PMT_CTL_WOL_EN; 2061 val |= PMT_CTL_WUPS; 2062 2063 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2064 if (ret < 0) { 2065 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2066 return ret; 2067 } 2068 } 2069 2070 if (suspend_flags & SUSPEND_SUSPEND2) { 2071 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2072 2073 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2074 if (ret < 0) { 2075 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2076 return ret; 2077 } 2078 2079 val |= PMT_CTL_PHY_PWRUP; 2080 2081 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2082 if (ret < 0) { 2083 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2084 return ret; 2085 } 2086 } 2087 2088 ret = smsc75xx_wait_ready(dev, 1); 2089 if (ret < 0) { 2090 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2091 return ret; 2092 } 2093 2094 return usbnet_resume(intf); 2095 } 2096 2097 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2098 u32 rx_cmd_a, u32 rx_cmd_b) 2099 { 2100 if (!(dev->net->features & NETIF_F_RXCSUM) || 2101 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2102 skb->ip_summed = CHECKSUM_NONE; 2103 } else { 2104 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2105 skb->ip_summed = CHECKSUM_COMPLETE; 2106 } 2107 } 2108 2109 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2110 { 2111 while (skb->len > 0) { 2112 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2113 struct sk_buff *ax_skb; 2114 unsigned char *packet; 2115 2116 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2117 le32_to_cpus(&rx_cmd_a); 2118 skb_pull(skb, 4); 2119 2120 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2121 le32_to_cpus(&rx_cmd_b); 2122 skb_pull(skb, 4 + RXW_PADDING); 2123 2124 packet = skb->data; 2125 2126 /* get the packet length */ 2127 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2128 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2129 2130 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2131 netif_dbg(dev, rx_err, dev->net, 2132 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2133 dev->net->stats.rx_errors++; 2134 dev->net->stats.rx_dropped++; 2135 2136 if (rx_cmd_a & RX_CMD_A_FCS) 2137 dev->net->stats.rx_crc_errors++; 2138 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2139 dev->net->stats.rx_frame_errors++; 2140 } else { 2141 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2142 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2143 netif_dbg(dev, rx_err, dev->net, 2144 "size err rx_cmd_a=0x%08x\n", 2145 rx_cmd_a); 2146 return 0; 2147 } 2148 2149 /* last frame in this batch */ 2150 if (skb->len == size) { 2151 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2152 rx_cmd_b); 2153 2154 skb_trim(skb, skb->len - 4); /* remove fcs */ 2155 skb->truesize = size + sizeof(struct sk_buff); 2156 2157 return 1; 2158 } 2159 2160 ax_skb = skb_clone(skb, GFP_ATOMIC); 2161 if (unlikely(!ax_skb)) { 2162 netdev_warn(dev->net, "Error allocating skb\n"); 2163 return 0; 2164 } 2165 2166 ax_skb->len = size; 2167 ax_skb->data = packet; 2168 skb_set_tail_pointer(ax_skb, size); 2169 2170 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2171 rx_cmd_b); 2172 2173 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2174 ax_skb->truesize = size + sizeof(struct sk_buff); 2175 2176 usbnet_skb_return(dev, ax_skb); 2177 } 2178 2179 skb_pull(skb, size); 2180 2181 /* padding bytes before the next frame starts */ 2182 if (skb->len) 2183 skb_pull(skb, align_count); 2184 } 2185 2186 if (unlikely(skb->len < 0)) { 2187 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len); 2188 return 0; 2189 } 2190 2191 return 1; 2192 } 2193 2194 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2195 struct sk_buff *skb, gfp_t flags) 2196 { 2197 u32 tx_cmd_a, tx_cmd_b; 2198 2199 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2200 struct sk_buff *skb2 = 2201 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2202 dev_kfree_skb_any(skb); 2203 skb = skb2; 2204 if (!skb) 2205 return NULL; 2206 } 2207 2208 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2209 2210 if (skb->ip_summed == CHECKSUM_PARTIAL) 2211 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2212 2213 if (skb_is_gso(skb)) { 2214 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2215 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2216 2217 tx_cmd_a |= TX_CMD_A_LSO; 2218 } else { 2219 tx_cmd_b = 0; 2220 } 2221 2222 skb_push(skb, 4); 2223 cpu_to_le32s(&tx_cmd_b); 2224 memcpy(skb->data, &tx_cmd_b, 4); 2225 2226 skb_push(skb, 4); 2227 cpu_to_le32s(&tx_cmd_a); 2228 memcpy(skb->data, &tx_cmd_a, 4); 2229 2230 return skb; 2231 } 2232 2233 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2234 { 2235 dev->intf->needs_remote_wakeup = on; 2236 return 0; 2237 } 2238 2239 static const struct driver_info smsc75xx_info = { 2240 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2241 .bind = smsc75xx_bind, 2242 .unbind = smsc75xx_unbind, 2243 .link_reset = smsc75xx_link_reset, 2244 .reset = smsc75xx_reset, 2245 .rx_fixup = smsc75xx_rx_fixup, 2246 .tx_fixup = smsc75xx_tx_fixup, 2247 .status = smsc75xx_status, 2248 .manage_power = smsc75xx_manage_power, 2249 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2250 }; 2251 2252 static const struct usb_device_id products[] = { 2253 { 2254 /* SMSC7500 USB Gigabit Ethernet Device */ 2255 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2256 .driver_info = (unsigned long) &smsc75xx_info, 2257 }, 2258 { 2259 /* SMSC7500 USB Gigabit Ethernet Device */ 2260 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2261 .driver_info = (unsigned long) &smsc75xx_info, 2262 }, 2263 { }, /* END */ 2264 }; 2265 MODULE_DEVICE_TABLE(usb, products); 2266 2267 static struct usb_driver smsc75xx_driver = { 2268 .name = SMSC_CHIPNAME, 2269 .id_table = products, 2270 .probe = usbnet_probe, 2271 .suspend = smsc75xx_suspend, 2272 .resume = smsc75xx_resume, 2273 .reset_resume = smsc75xx_resume, 2274 .disconnect = usbnet_disconnect, 2275 .disable_hub_initiated_lpm = 1, 2276 .supports_autosuspend = 1, 2277 }; 2278 2279 module_usb_driver(smsc75xx_driver); 2280 2281 MODULE_AUTHOR("Nancy Lin"); 2282 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2283 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2284 MODULE_LICENSE("GPL"); 2285