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 <linux/of_net.h> 33 #include "smsc75xx.h" 34 35 #define SMSC_CHIPNAME "smsc75xx" 36 #define SMSC_DRIVER_VERSION "1.0.0" 37 #define HS_USB_PKT_SIZE (512) 38 #define FS_USB_PKT_SIZE (64) 39 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 40 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 41 #define DEFAULT_BULK_IN_DELAY (0x00002000) 42 #define MAX_SINGLE_PACKET_SIZE (9000) 43 #define LAN75XX_EEPROM_MAGIC (0x7500) 44 #define EEPROM_MAC_OFFSET (0x01) 45 #define DEFAULT_TX_CSUM_ENABLE (true) 46 #define DEFAULT_RX_CSUM_ENABLE (true) 47 #define SMSC75XX_INTERNAL_PHY_ID (1) 48 #define SMSC75XX_TX_OVERHEAD (8) 49 #define MAX_RX_FIFO_SIZE (20 * 1024) 50 #define MAX_TX_FIFO_SIZE (12 * 1024) 51 #define USB_VENDOR_ID_SMSC (0x0424) 52 #define USB_PRODUCT_ID_LAN7500 (0x7500) 53 #define USB_PRODUCT_ID_LAN7505 (0x7505) 54 #define RXW_PADDING 2 55 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 56 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 57 58 #define SUSPEND_SUSPEND0 (0x01) 59 #define SUSPEND_SUSPEND1 (0x02) 60 #define SUSPEND_SUSPEND2 (0x04) 61 #define SUSPEND_SUSPEND3 (0x08) 62 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 63 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 64 65 struct smsc75xx_priv { 66 struct usbnet *dev; 67 u32 rfe_ctl; 68 u32 wolopts; 69 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 70 struct mutex dataport_mutex; 71 spinlock_t rfe_ctl_lock; 72 struct work_struct set_multicast; 73 u8 suspend_flags; 74 }; 75 76 struct usb_context { 77 struct usb_ctrlrequest req; 78 struct usbnet *dev; 79 }; 80 81 static bool turbo_mode = true; 82 module_param(turbo_mode, bool, 0644); 83 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 84 85 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 86 u32 *data, int in_pm) 87 { 88 u32 buf; 89 int ret; 90 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 91 92 BUG_ON(!dev); 93 94 if (!in_pm) 95 fn = usbnet_read_cmd; 96 else 97 fn = usbnet_read_cmd_nopm; 98 99 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 100 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 101 0, index, &buf, 4); 102 if (unlikely(ret < 0)) { 103 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 104 index, ret); 105 return ret; 106 } 107 108 le32_to_cpus(&buf); 109 *data = buf; 110 111 return ret; 112 } 113 114 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 115 u32 data, int in_pm) 116 { 117 u32 buf; 118 int ret; 119 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 120 121 BUG_ON(!dev); 122 123 if (!in_pm) 124 fn = usbnet_write_cmd; 125 else 126 fn = usbnet_write_cmd_nopm; 127 128 buf = data; 129 cpu_to_le32s(&buf); 130 131 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 132 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 133 0, index, &buf, 4); 134 if (unlikely(ret < 0)) 135 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 136 index, ret); 137 138 return ret; 139 } 140 141 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 142 u32 *data) 143 { 144 return __smsc75xx_read_reg(dev, index, data, 1); 145 } 146 147 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 148 u32 data) 149 { 150 return __smsc75xx_write_reg(dev, index, data, 1); 151 } 152 153 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 154 u32 *data) 155 { 156 return __smsc75xx_read_reg(dev, index, data, 0); 157 } 158 159 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 160 u32 data) 161 { 162 return __smsc75xx_write_reg(dev, index, data, 0); 163 } 164 165 /* Loop until the read is completed with timeout 166 * called with phy_mutex held */ 167 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 168 int in_pm) 169 { 170 unsigned long start_time = jiffies; 171 u32 val; 172 int ret; 173 174 do { 175 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 176 if (ret < 0) { 177 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 178 return ret; 179 } 180 181 if (!(val & MII_ACCESS_BUSY)) 182 return 0; 183 } while (!time_after(jiffies, start_time + HZ)); 184 185 return -EIO; 186 } 187 188 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 189 int in_pm) 190 { 191 struct usbnet *dev = netdev_priv(netdev); 192 u32 val, addr; 193 int ret; 194 195 mutex_lock(&dev->phy_mutex); 196 197 /* confirm MII not busy */ 198 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 199 if (ret < 0) { 200 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 201 goto done; 202 } 203 204 /* set the address, index & direction (read from PHY) */ 205 phy_id &= dev->mii.phy_id_mask; 206 idx &= dev->mii.reg_num_mask; 207 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 208 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 209 | MII_ACCESS_READ | MII_ACCESS_BUSY; 210 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 211 if (ret < 0) { 212 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 213 goto done; 214 } 215 216 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 217 if (ret < 0) { 218 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 219 goto done; 220 } 221 222 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 223 if (ret < 0) { 224 netdev_warn(dev->net, "Error reading MII_DATA\n"); 225 goto done; 226 } 227 228 ret = (u16)(val & 0xFFFF); 229 230 done: 231 mutex_unlock(&dev->phy_mutex); 232 return ret; 233 } 234 235 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 236 int idx, int regval, int in_pm) 237 { 238 struct usbnet *dev = netdev_priv(netdev); 239 u32 val, addr; 240 int ret; 241 242 mutex_lock(&dev->phy_mutex); 243 244 /* confirm MII not busy */ 245 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 246 if (ret < 0) { 247 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 248 goto done; 249 } 250 251 val = regval; 252 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 253 if (ret < 0) { 254 netdev_warn(dev->net, "Error writing MII_DATA\n"); 255 goto done; 256 } 257 258 /* set the address, index & direction (write to PHY) */ 259 phy_id &= dev->mii.phy_id_mask; 260 idx &= dev->mii.reg_num_mask; 261 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 262 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 263 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 264 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 265 if (ret < 0) { 266 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 267 goto done; 268 } 269 270 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 271 if (ret < 0) { 272 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 273 goto done; 274 } 275 276 done: 277 mutex_unlock(&dev->phy_mutex); 278 } 279 280 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 281 int idx) 282 { 283 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 284 } 285 286 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 287 int idx, int regval) 288 { 289 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 290 } 291 292 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 293 { 294 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 295 } 296 297 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 298 int regval) 299 { 300 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 301 } 302 303 static int smsc75xx_wait_eeprom(struct usbnet *dev) 304 { 305 unsigned long start_time = jiffies; 306 u32 val; 307 int ret; 308 309 do { 310 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 311 if (ret < 0) { 312 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 313 return ret; 314 } 315 316 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 317 break; 318 udelay(40); 319 } while (!time_after(jiffies, start_time + HZ)); 320 321 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 322 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 323 return -EIO; 324 } 325 326 return 0; 327 } 328 329 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 330 { 331 unsigned long start_time = jiffies; 332 u32 val; 333 int ret; 334 335 do { 336 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 337 if (ret < 0) { 338 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 339 return ret; 340 } 341 342 if (!(val & E2P_CMD_BUSY)) 343 return 0; 344 345 udelay(40); 346 } while (!time_after(jiffies, start_time + HZ)); 347 348 netdev_warn(dev->net, "EEPROM is busy\n"); 349 return -EIO; 350 } 351 352 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 353 u8 *data) 354 { 355 u32 val; 356 int i, ret; 357 358 BUG_ON(!dev); 359 BUG_ON(!data); 360 361 ret = smsc75xx_eeprom_confirm_not_busy(dev); 362 if (ret) 363 return ret; 364 365 for (i = 0; i < length; i++) { 366 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 367 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 368 if (ret < 0) { 369 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 370 return ret; 371 } 372 373 ret = smsc75xx_wait_eeprom(dev); 374 if (ret < 0) 375 return ret; 376 377 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 378 if (ret < 0) { 379 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 380 return ret; 381 } 382 383 data[i] = val & 0xFF; 384 offset++; 385 } 386 387 return 0; 388 } 389 390 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 391 u8 *data) 392 { 393 u32 val; 394 int i, ret; 395 396 BUG_ON(!dev); 397 BUG_ON(!data); 398 399 ret = smsc75xx_eeprom_confirm_not_busy(dev); 400 if (ret) 401 return ret; 402 403 /* Issue write/erase enable command */ 404 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 405 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 406 if (ret < 0) { 407 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 408 return ret; 409 } 410 411 ret = smsc75xx_wait_eeprom(dev); 412 if (ret < 0) 413 return ret; 414 415 for (i = 0; i < length; i++) { 416 417 /* Fill data register */ 418 val = data[i]; 419 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 420 if (ret < 0) { 421 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 422 return ret; 423 } 424 425 /* Send "write" command */ 426 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 427 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 428 if (ret < 0) { 429 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 430 return ret; 431 } 432 433 ret = smsc75xx_wait_eeprom(dev); 434 if (ret < 0) 435 return ret; 436 437 offset++; 438 } 439 440 return 0; 441 } 442 443 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 444 { 445 int i, ret; 446 447 for (i = 0; i < 100; i++) { 448 u32 dp_sel; 449 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 450 if (ret < 0) { 451 netdev_warn(dev->net, "Error reading DP_SEL\n"); 452 return ret; 453 } 454 455 if (dp_sel & DP_SEL_DPRDY) 456 return 0; 457 458 udelay(40); 459 } 460 461 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 462 463 return -EIO; 464 } 465 466 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 467 u32 length, u32 *buf) 468 { 469 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 470 u32 dp_sel; 471 int i, ret; 472 473 mutex_lock(&pdata->dataport_mutex); 474 475 ret = smsc75xx_dataport_wait_not_busy(dev); 476 if (ret < 0) { 477 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 478 goto done; 479 } 480 481 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 482 if (ret < 0) { 483 netdev_warn(dev->net, "Error reading DP_SEL\n"); 484 goto done; 485 } 486 487 dp_sel &= ~DP_SEL_RSEL; 488 dp_sel |= ram_select; 489 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 490 if (ret < 0) { 491 netdev_warn(dev->net, "Error writing DP_SEL\n"); 492 goto done; 493 } 494 495 for (i = 0; i < length; i++) { 496 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 497 if (ret < 0) { 498 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 499 goto done; 500 } 501 502 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 503 if (ret < 0) { 504 netdev_warn(dev->net, "Error writing DP_DATA\n"); 505 goto done; 506 } 507 508 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 509 if (ret < 0) { 510 netdev_warn(dev->net, "Error writing DP_CMD\n"); 511 goto done; 512 } 513 514 ret = smsc75xx_dataport_wait_not_busy(dev); 515 if (ret < 0) { 516 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 517 goto done; 518 } 519 } 520 521 done: 522 mutex_unlock(&pdata->dataport_mutex); 523 return ret; 524 } 525 526 /* returns hash bit number for given MAC address */ 527 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 528 { 529 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 530 } 531 532 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 533 { 534 struct smsc75xx_priv *pdata = 535 container_of(param, struct smsc75xx_priv, set_multicast); 536 struct usbnet *dev = pdata->dev; 537 int ret; 538 539 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 540 pdata->rfe_ctl); 541 542 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 543 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 544 545 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 546 if (ret < 0) 547 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 548 } 549 550 static void smsc75xx_set_multicast(struct net_device *netdev) 551 { 552 struct usbnet *dev = netdev_priv(netdev); 553 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 554 unsigned long flags; 555 int i; 556 557 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 558 559 pdata->rfe_ctl &= 560 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 561 pdata->rfe_ctl |= RFE_CTL_AB; 562 563 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 564 pdata->multicast_hash_table[i] = 0; 565 566 if (dev->net->flags & IFF_PROMISC) { 567 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 568 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 569 } else if (dev->net->flags & IFF_ALLMULTI) { 570 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 571 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 572 } else if (!netdev_mc_empty(dev->net)) { 573 struct netdev_hw_addr *ha; 574 575 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 576 577 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 578 579 netdev_for_each_mc_addr(ha, netdev) { 580 u32 bitnum = smsc75xx_hash(ha->addr); 581 pdata->multicast_hash_table[bitnum / 32] |= 582 (1 << (bitnum % 32)); 583 } 584 } else { 585 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 586 pdata->rfe_ctl |= RFE_CTL_DPF; 587 } 588 589 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 590 591 /* defer register writes to a sleepable context */ 592 schedule_work(&pdata->set_multicast); 593 } 594 595 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 596 u16 lcladv, u16 rmtadv) 597 { 598 u32 flow = 0, fct_flow = 0; 599 int ret; 600 601 if (duplex == DUPLEX_FULL) { 602 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 603 604 if (cap & FLOW_CTRL_TX) { 605 flow = (FLOW_TX_FCEN | 0xFFFF); 606 /* set fct_flow thresholds to 20% and 80% */ 607 fct_flow = (8 << 8) | 32; 608 } 609 610 if (cap & FLOW_CTRL_RX) 611 flow |= FLOW_RX_FCEN; 612 613 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 614 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 615 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 616 } else { 617 netif_dbg(dev, link, dev->net, "half duplex\n"); 618 } 619 620 ret = smsc75xx_write_reg(dev, FLOW, flow); 621 if (ret < 0) { 622 netdev_warn(dev->net, "Error writing FLOW\n"); 623 return ret; 624 } 625 626 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 627 if (ret < 0) { 628 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 629 return ret; 630 } 631 632 return 0; 633 } 634 635 static int smsc75xx_link_reset(struct usbnet *dev) 636 { 637 struct mii_if_info *mii = &dev->mii; 638 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 639 u16 lcladv, rmtadv; 640 int ret; 641 642 /* write to clear phy interrupt status */ 643 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 644 PHY_INT_SRC_CLEAR_ALL); 645 646 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 647 if (ret < 0) { 648 netdev_warn(dev->net, "Error writing INT_STS\n"); 649 return ret; 650 } 651 652 mii_check_media(mii, 1, 1); 653 mii_ethtool_gset(&dev->mii, &ecmd); 654 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 655 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 656 657 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 658 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 659 660 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 661 } 662 663 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 664 { 665 u32 intdata; 666 667 if (urb->actual_length != 4) { 668 netdev_warn(dev->net, "unexpected urb length %d\n", 669 urb->actual_length); 670 return; 671 } 672 673 memcpy(&intdata, urb->transfer_buffer, 4); 674 le32_to_cpus(&intdata); 675 676 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 677 678 if (intdata & INT_ENP_PHY_INT) 679 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 680 else 681 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 682 intdata); 683 } 684 685 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 686 { 687 return MAX_EEPROM_SIZE; 688 } 689 690 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 691 struct ethtool_eeprom *ee, u8 *data) 692 { 693 struct usbnet *dev = netdev_priv(netdev); 694 695 ee->magic = LAN75XX_EEPROM_MAGIC; 696 697 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 698 } 699 700 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 701 struct ethtool_eeprom *ee, u8 *data) 702 { 703 struct usbnet *dev = netdev_priv(netdev); 704 705 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 706 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 707 ee->magic); 708 return -EINVAL; 709 } 710 711 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 712 } 713 714 static void smsc75xx_ethtool_get_wol(struct net_device *net, 715 struct ethtool_wolinfo *wolinfo) 716 { 717 struct usbnet *dev = netdev_priv(net); 718 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 719 720 wolinfo->supported = SUPPORTED_WAKE; 721 wolinfo->wolopts = pdata->wolopts; 722 } 723 724 static int smsc75xx_ethtool_set_wol(struct net_device *net, 725 struct ethtool_wolinfo *wolinfo) 726 { 727 struct usbnet *dev = netdev_priv(net); 728 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 729 int ret; 730 731 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 732 733 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 734 if (ret < 0) 735 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 736 737 return ret; 738 } 739 740 static const struct ethtool_ops smsc75xx_ethtool_ops = { 741 .get_link = usbnet_get_link, 742 .nway_reset = usbnet_nway_reset, 743 .get_drvinfo = usbnet_get_drvinfo, 744 .get_msglevel = usbnet_get_msglevel, 745 .set_msglevel = usbnet_set_msglevel, 746 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 747 .get_eeprom = smsc75xx_ethtool_get_eeprom, 748 .set_eeprom = smsc75xx_ethtool_set_eeprom, 749 .get_wol = smsc75xx_ethtool_get_wol, 750 .set_wol = smsc75xx_ethtool_set_wol, 751 .get_link_ksettings = usbnet_get_link_ksettings, 752 .set_link_ksettings = usbnet_set_link_ksettings, 753 }; 754 755 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 756 { 757 struct usbnet *dev = netdev_priv(netdev); 758 759 if (!netif_running(netdev)) 760 return -EINVAL; 761 762 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 763 } 764 765 static void smsc75xx_init_mac_address(struct usbnet *dev) 766 { 767 const u8 *mac_addr; 768 769 /* maybe the boot loader passed the MAC address in devicetree */ 770 mac_addr = of_get_mac_address(dev->udev->dev.of_node); 771 if (mac_addr) { 772 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN); 773 return; 774 } 775 776 /* try reading mac address from EEPROM */ 777 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 778 dev->net->dev_addr) == 0) { 779 if (is_valid_ether_addr(dev->net->dev_addr)) { 780 /* eeprom values are valid so use them */ 781 netif_dbg(dev, ifup, dev->net, 782 "MAC address read from EEPROM\n"); 783 return; 784 } 785 } 786 787 /* no useful static MAC address found. generate a random one */ 788 eth_hw_addr_random(dev->net); 789 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 790 } 791 792 static int smsc75xx_set_mac_address(struct usbnet *dev) 793 { 794 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 795 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 796 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 797 798 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 799 if (ret < 0) { 800 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 801 return ret; 802 } 803 804 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 805 if (ret < 0) { 806 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 807 return ret; 808 } 809 810 addr_hi |= ADDR_FILTX_FB_VALID; 811 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 812 if (ret < 0) { 813 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 814 return ret; 815 } 816 817 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 818 if (ret < 0) 819 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 820 821 return ret; 822 } 823 824 static int smsc75xx_phy_initialize(struct usbnet *dev) 825 { 826 int bmcr, ret, timeout = 0; 827 828 /* Initialize MII structure */ 829 dev->mii.dev = dev->net; 830 dev->mii.mdio_read = smsc75xx_mdio_read; 831 dev->mii.mdio_write = smsc75xx_mdio_write; 832 dev->mii.phy_id_mask = 0x1f; 833 dev->mii.reg_num_mask = 0x1f; 834 dev->mii.supports_gmii = 1; 835 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 836 837 /* reset phy and wait for reset to complete */ 838 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 839 840 do { 841 msleep(10); 842 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 843 if (bmcr < 0) { 844 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 845 return bmcr; 846 } 847 timeout++; 848 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 849 850 if (timeout >= 100) { 851 netdev_warn(dev->net, "timeout on PHY Reset\n"); 852 return -EIO; 853 } 854 855 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 856 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 857 ADVERTISE_PAUSE_ASYM); 858 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 859 ADVERTISE_1000FULL); 860 861 /* read and write to clear phy interrupt status */ 862 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 863 if (ret < 0) { 864 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 865 return ret; 866 } 867 868 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 869 870 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 871 PHY_INT_MASK_DEFAULT); 872 mii_nway_restart(&dev->mii); 873 874 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 875 return 0; 876 } 877 878 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 879 { 880 int ret = 0; 881 u32 buf; 882 bool rxenabled; 883 884 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 885 if (ret < 0) { 886 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 887 return ret; 888 } 889 890 rxenabled = ((buf & MAC_RX_RXEN) != 0); 891 892 if (rxenabled) { 893 buf &= ~MAC_RX_RXEN; 894 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 895 if (ret < 0) { 896 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 897 return ret; 898 } 899 } 900 901 /* add 4 to size for FCS */ 902 buf &= ~MAC_RX_MAX_SIZE; 903 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 904 905 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 906 if (ret < 0) { 907 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 908 return ret; 909 } 910 911 if (rxenabled) { 912 buf |= MAC_RX_RXEN; 913 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 914 if (ret < 0) { 915 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 916 return ret; 917 } 918 } 919 920 return 0; 921 } 922 923 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 924 { 925 struct usbnet *dev = netdev_priv(netdev); 926 int ret; 927 928 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 929 if (ret < 0) { 930 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 931 return ret; 932 } 933 934 return usbnet_change_mtu(netdev, new_mtu); 935 } 936 937 /* Enable or disable Rx checksum offload engine */ 938 static int smsc75xx_set_features(struct net_device *netdev, 939 netdev_features_t features) 940 { 941 struct usbnet *dev = netdev_priv(netdev); 942 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 943 unsigned long flags; 944 int ret; 945 946 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 947 948 if (features & NETIF_F_RXCSUM) 949 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 950 else 951 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 952 953 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 954 /* it's racing here! */ 955 956 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 957 if (ret < 0) 958 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 959 960 return ret; 961 } 962 963 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 964 { 965 int timeout = 0; 966 967 do { 968 u32 buf; 969 int ret; 970 971 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 972 973 if (ret < 0) { 974 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 975 return ret; 976 } 977 978 if (buf & PMT_CTL_DEV_RDY) 979 return 0; 980 981 msleep(10); 982 timeout++; 983 } while (timeout < 100); 984 985 netdev_warn(dev->net, "timeout waiting for device ready\n"); 986 return -EIO; 987 } 988 989 static int smsc75xx_reset(struct usbnet *dev) 990 { 991 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 992 u32 buf; 993 int ret = 0, timeout; 994 995 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 996 997 ret = smsc75xx_wait_ready(dev, 0); 998 if (ret < 0) { 999 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 1000 return ret; 1001 } 1002 1003 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1004 if (ret < 0) { 1005 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1006 return ret; 1007 } 1008 1009 buf |= HW_CFG_LRST; 1010 1011 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1012 if (ret < 0) { 1013 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1014 return ret; 1015 } 1016 1017 timeout = 0; 1018 do { 1019 msleep(10); 1020 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1021 if (ret < 0) { 1022 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1023 return ret; 1024 } 1025 timeout++; 1026 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1027 1028 if (timeout >= 100) { 1029 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1030 return -EIO; 1031 } 1032 1033 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1034 1035 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1036 if (ret < 0) { 1037 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1038 return ret; 1039 } 1040 1041 buf |= PMT_CTL_PHY_RST; 1042 1043 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1044 if (ret < 0) { 1045 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1046 return ret; 1047 } 1048 1049 timeout = 0; 1050 do { 1051 msleep(10); 1052 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1053 if (ret < 0) { 1054 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1055 return ret; 1056 } 1057 timeout++; 1058 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1059 1060 if (timeout >= 100) { 1061 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1062 return -EIO; 1063 } 1064 1065 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1066 1067 ret = smsc75xx_set_mac_address(dev); 1068 if (ret < 0) { 1069 netdev_warn(dev->net, "Failed to set mac address\n"); 1070 return ret; 1071 } 1072 1073 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1074 dev->net->dev_addr); 1075 1076 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1077 if (ret < 0) { 1078 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1079 return ret; 1080 } 1081 1082 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1083 buf); 1084 1085 buf |= HW_CFG_BIR; 1086 1087 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1088 if (ret < 0) { 1089 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1090 return ret; 1091 } 1092 1093 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1094 if (ret < 0) { 1095 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1096 return ret; 1097 } 1098 1099 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1100 buf); 1101 1102 if (!turbo_mode) { 1103 buf = 0; 1104 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1105 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1106 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1107 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1108 } else { 1109 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1110 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1111 } 1112 1113 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1114 (ulong)dev->rx_urb_size); 1115 1116 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1117 if (ret < 0) { 1118 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1119 return ret; 1120 } 1121 1122 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1123 if (ret < 0) { 1124 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1125 return ret; 1126 } 1127 1128 netif_dbg(dev, ifup, dev->net, 1129 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1130 1131 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1132 if (ret < 0) { 1133 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1134 return ret; 1135 } 1136 1137 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1138 if (ret < 0) { 1139 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1140 return ret; 1141 } 1142 1143 netif_dbg(dev, ifup, dev->net, 1144 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1145 1146 if (turbo_mode) { 1147 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1148 if (ret < 0) { 1149 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1150 return ret; 1151 } 1152 1153 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1154 1155 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1156 1157 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1158 if (ret < 0) { 1159 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1160 return ret; 1161 } 1162 1163 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1164 if (ret < 0) { 1165 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1166 return ret; 1167 } 1168 1169 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1170 } 1171 1172 /* set FIFO sizes */ 1173 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1174 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1175 if (ret < 0) { 1176 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1177 return ret; 1178 } 1179 1180 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1181 1182 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1183 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1184 if (ret < 0) { 1185 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1186 return ret; 1187 } 1188 1189 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1190 1191 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1192 if (ret < 0) { 1193 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1194 return ret; 1195 } 1196 1197 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1198 if (ret < 0) { 1199 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1200 return ret; 1201 } 1202 1203 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1204 1205 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1206 if (ret < 0) { 1207 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1208 return ret; 1209 } 1210 1211 /* only set default GPIO/LED settings if no EEPROM is detected */ 1212 if (!(buf & E2P_CMD_LOADED)) { 1213 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1214 if (ret < 0) { 1215 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1216 return ret; 1217 } 1218 1219 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1220 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1221 1222 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1223 if (ret < 0) { 1224 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1225 return ret; 1226 } 1227 } 1228 1229 ret = smsc75xx_write_reg(dev, FLOW, 0); 1230 if (ret < 0) { 1231 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1232 return ret; 1233 } 1234 1235 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1236 if (ret < 0) { 1237 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1238 return ret; 1239 } 1240 1241 /* Don't need rfe_ctl_lock during initialisation */ 1242 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1243 if (ret < 0) { 1244 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1245 return ret; 1246 } 1247 1248 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1249 1250 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1251 if (ret < 0) { 1252 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1253 return ret; 1254 } 1255 1256 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1257 if (ret < 0) { 1258 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1259 return ret; 1260 } 1261 1262 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1263 pdata->rfe_ctl); 1264 1265 /* Enable or disable checksum offload engines */ 1266 smsc75xx_set_features(dev->net, dev->net->features); 1267 1268 smsc75xx_set_multicast(dev->net); 1269 1270 ret = smsc75xx_phy_initialize(dev); 1271 if (ret < 0) { 1272 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1273 return ret; 1274 } 1275 1276 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1277 if (ret < 0) { 1278 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1279 return ret; 1280 } 1281 1282 /* enable PHY interrupts */ 1283 buf |= INT_ENP_PHY_INT; 1284 1285 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1286 if (ret < 0) { 1287 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1288 return ret; 1289 } 1290 1291 /* allow mac to detect speed and duplex from phy */ 1292 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1293 if (ret < 0) { 1294 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1295 return ret; 1296 } 1297 1298 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1299 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1300 if (ret < 0) { 1301 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1302 return ret; 1303 } 1304 1305 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1306 if (ret < 0) { 1307 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1308 return ret; 1309 } 1310 1311 buf |= MAC_TX_TXEN; 1312 1313 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1314 if (ret < 0) { 1315 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1316 return ret; 1317 } 1318 1319 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1320 1321 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1322 if (ret < 0) { 1323 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1324 return ret; 1325 } 1326 1327 buf |= FCT_TX_CTL_EN; 1328 1329 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1330 if (ret < 0) { 1331 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1332 return ret; 1333 } 1334 1335 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1336 1337 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1338 if (ret < 0) { 1339 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1340 return ret; 1341 } 1342 1343 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1344 if (ret < 0) { 1345 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1346 return ret; 1347 } 1348 1349 buf |= MAC_RX_RXEN; 1350 1351 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1352 if (ret < 0) { 1353 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1354 return ret; 1355 } 1356 1357 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1358 1359 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1360 if (ret < 0) { 1361 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1362 return ret; 1363 } 1364 1365 buf |= FCT_RX_CTL_EN; 1366 1367 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1368 if (ret < 0) { 1369 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1370 return ret; 1371 } 1372 1373 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1374 1375 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1376 return 0; 1377 } 1378 1379 static const struct net_device_ops smsc75xx_netdev_ops = { 1380 .ndo_open = usbnet_open, 1381 .ndo_stop = usbnet_stop, 1382 .ndo_start_xmit = usbnet_start_xmit, 1383 .ndo_tx_timeout = usbnet_tx_timeout, 1384 .ndo_get_stats64 = usbnet_get_stats64, 1385 .ndo_change_mtu = smsc75xx_change_mtu, 1386 .ndo_set_mac_address = eth_mac_addr, 1387 .ndo_validate_addr = eth_validate_addr, 1388 .ndo_do_ioctl = smsc75xx_ioctl, 1389 .ndo_set_rx_mode = smsc75xx_set_multicast, 1390 .ndo_set_features = smsc75xx_set_features, 1391 }; 1392 1393 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1394 { 1395 struct smsc75xx_priv *pdata = NULL; 1396 int ret; 1397 1398 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1399 1400 ret = usbnet_get_endpoints(dev, intf); 1401 if (ret < 0) { 1402 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1403 return ret; 1404 } 1405 1406 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1407 GFP_KERNEL); 1408 1409 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1410 if (!pdata) 1411 return -ENOMEM; 1412 1413 pdata->dev = dev; 1414 1415 spin_lock_init(&pdata->rfe_ctl_lock); 1416 mutex_init(&pdata->dataport_mutex); 1417 1418 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1419 1420 if (DEFAULT_TX_CSUM_ENABLE) 1421 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1422 1423 if (DEFAULT_RX_CSUM_ENABLE) 1424 dev->net->features |= NETIF_F_RXCSUM; 1425 1426 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1427 NETIF_F_RXCSUM; 1428 1429 ret = smsc75xx_wait_ready(dev, 0); 1430 if (ret < 0) { 1431 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1432 return ret; 1433 } 1434 1435 smsc75xx_init_mac_address(dev); 1436 1437 /* Init all registers */ 1438 ret = smsc75xx_reset(dev); 1439 if (ret < 0) { 1440 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1441 return ret; 1442 } 1443 1444 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1445 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1446 dev->net->flags |= IFF_MULTICAST; 1447 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1448 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1449 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; 1450 return 0; 1451 } 1452 1453 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1454 { 1455 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1456 if (pdata) { 1457 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1458 kfree(pdata); 1459 pdata = NULL; 1460 dev->data[0] = 0; 1461 } 1462 } 1463 1464 static u16 smsc_crc(const u8 *buffer, size_t len) 1465 { 1466 return bitrev16(crc16(0xFFFF, buffer, len)); 1467 } 1468 1469 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1470 u32 wuf_mask1) 1471 { 1472 int cfg_base = WUF_CFGX + filter * 4; 1473 int mask_base = WUF_MASKX + filter * 16; 1474 int ret; 1475 1476 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1477 if (ret < 0) { 1478 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1479 return ret; 1480 } 1481 1482 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1483 if (ret < 0) { 1484 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1485 return ret; 1486 } 1487 1488 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1489 if (ret < 0) { 1490 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1491 return ret; 1492 } 1493 1494 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1495 if (ret < 0) { 1496 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1497 return ret; 1498 } 1499 1500 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1501 if (ret < 0) { 1502 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1503 return ret; 1504 } 1505 1506 return 0; 1507 } 1508 1509 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1510 { 1511 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1512 u32 val; 1513 int ret; 1514 1515 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1516 if (ret < 0) { 1517 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1518 return ret; 1519 } 1520 1521 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1522 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1523 1524 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1525 if (ret < 0) { 1526 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1527 return ret; 1528 } 1529 1530 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1531 1532 return 0; 1533 } 1534 1535 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1536 { 1537 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1538 u32 val; 1539 int ret; 1540 1541 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1542 if (ret < 0) { 1543 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1544 return ret; 1545 } 1546 1547 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1548 val |= PMT_CTL_SUS_MODE_1; 1549 1550 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1551 if (ret < 0) { 1552 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1553 return ret; 1554 } 1555 1556 /* clear wol status, enable energy detection */ 1557 val &= ~PMT_CTL_WUPS; 1558 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1559 1560 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1561 if (ret < 0) { 1562 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1563 return ret; 1564 } 1565 1566 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1567 1568 return 0; 1569 } 1570 1571 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1572 { 1573 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1574 u32 val; 1575 int ret; 1576 1577 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1578 if (ret < 0) { 1579 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1580 return ret; 1581 } 1582 1583 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1584 val |= PMT_CTL_SUS_MODE_2; 1585 1586 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1587 if (ret < 0) { 1588 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1589 return ret; 1590 } 1591 1592 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1593 1594 return 0; 1595 } 1596 1597 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1598 { 1599 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1600 u32 val; 1601 int ret; 1602 1603 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1604 if (ret < 0) { 1605 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1606 return ret; 1607 } 1608 1609 if (val & FCT_RX_CTL_RXUSED) { 1610 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1611 return -EBUSY; 1612 } 1613 1614 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1615 if (ret < 0) { 1616 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1617 return ret; 1618 } 1619 1620 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1621 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1622 1623 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1624 if (ret < 0) { 1625 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1626 return ret; 1627 } 1628 1629 /* clear wol status */ 1630 val &= ~PMT_CTL_WUPS; 1631 val |= PMT_CTL_WUPS_WOL; 1632 1633 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1634 if (ret < 0) { 1635 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1636 return ret; 1637 } 1638 1639 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1640 1641 return 0; 1642 } 1643 1644 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1645 { 1646 struct mii_if_info *mii = &dev->mii; 1647 int ret; 1648 1649 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1650 1651 /* read to clear */ 1652 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1653 if (ret < 0) { 1654 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1655 return ret; 1656 } 1657 1658 /* enable interrupt source */ 1659 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1660 if (ret < 0) { 1661 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1662 return ret; 1663 } 1664 1665 ret |= mask; 1666 1667 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1668 1669 return 0; 1670 } 1671 1672 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1673 { 1674 struct mii_if_info *mii = &dev->mii; 1675 int ret; 1676 1677 /* first, a dummy read, needed to latch some MII phys */ 1678 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1679 if (ret < 0) { 1680 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1681 return ret; 1682 } 1683 1684 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1685 if (ret < 0) { 1686 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1687 return ret; 1688 } 1689 1690 return !!(ret & BMSR_LSTATUS); 1691 } 1692 1693 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1694 { 1695 int ret; 1696 1697 if (!netif_running(dev->net)) { 1698 /* interface is ifconfig down so fully power down hw */ 1699 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1700 return smsc75xx_enter_suspend2(dev); 1701 } 1702 1703 if (!link_up) { 1704 /* link is down so enter EDPD mode */ 1705 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1706 1707 /* enable PHY wakeup events for if cable is attached */ 1708 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1709 PHY_INT_MASK_ANEG_COMP); 1710 if (ret < 0) { 1711 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1712 return ret; 1713 } 1714 1715 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1716 return smsc75xx_enter_suspend1(dev); 1717 } 1718 1719 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1720 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1721 PHY_INT_MASK_LINK_DOWN); 1722 if (ret < 0) { 1723 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1724 return ret; 1725 } 1726 1727 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1728 return smsc75xx_enter_suspend3(dev); 1729 } 1730 1731 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1732 { 1733 struct usbnet *dev = usb_get_intfdata(intf); 1734 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1735 u32 val, link_up; 1736 int ret; 1737 1738 ret = usbnet_suspend(intf, message); 1739 if (ret < 0) { 1740 netdev_warn(dev->net, "usbnet_suspend error\n"); 1741 return ret; 1742 } 1743 1744 if (pdata->suspend_flags) { 1745 netdev_warn(dev->net, "error during last resume\n"); 1746 pdata->suspend_flags = 0; 1747 } 1748 1749 /* determine if link is up using only _nopm functions */ 1750 link_up = smsc75xx_link_ok_nopm(dev); 1751 1752 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1753 ret = smsc75xx_autosuspend(dev, link_up); 1754 goto done; 1755 } 1756 1757 /* if we get this far we're not autosuspending */ 1758 /* if no wol options set, or if link is down and we're not waking on 1759 * PHY activity, enter lowest power SUSPEND2 mode 1760 */ 1761 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1762 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1763 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1764 1765 /* disable energy detect (link up) & wake up events */ 1766 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1767 if (ret < 0) { 1768 netdev_warn(dev->net, "Error reading WUCSR\n"); 1769 goto done; 1770 } 1771 1772 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1773 1774 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1775 if (ret < 0) { 1776 netdev_warn(dev->net, "Error writing WUCSR\n"); 1777 goto done; 1778 } 1779 1780 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1781 if (ret < 0) { 1782 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1783 goto done; 1784 } 1785 1786 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1787 1788 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1789 if (ret < 0) { 1790 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1791 goto done; 1792 } 1793 1794 ret = smsc75xx_enter_suspend2(dev); 1795 goto done; 1796 } 1797 1798 if (pdata->wolopts & WAKE_PHY) { 1799 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1800 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1801 if (ret < 0) { 1802 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1803 goto done; 1804 } 1805 1806 /* if link is down then configure EDPD and enter SUSPEND1, 1807 * otherwise enter SUSPEND0 below 1808 */ 1809 if (!link_up) { 1810 struct mii_if_info *mii = &dev->mii; 1811 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1812 1813 /* enable energy detect power-down mode */ 1814 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1815 PHY_MODE_CTRL_STS); 1816 if (ret < 0) { 1817 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1818 goto done; 1819 } 1820 1821 ret |= MODE_CTRL_STS_EDPWRDOWN; 1822 1823 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1824 PHY_MODE_CTRL_STS, ret); 1825 1826 /* enter SUSPEND1 mode */ 1827 ret = smsc75xx_enter_suspend1(dev); 1828 goto done; 1829 } 1830 } 1831 1832 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1833 int i, filter = 0; 1834 1835 /* disable all filters */ 1836 for (i = 0; i < WUF_NUM; i++) { 1837 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1838 if (ret < 0) { 1839 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1840 goto done; 1841 } 1842 } 1843 1844 if (pdata->wolopts & WAKE_MCAST) { 1845 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1846 netdev_info(dev->net, "enabling multicast detection\n"); 1847 1848 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1849 | smsc_crc(mcast, 3); 1850 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1851 if (ret < 0) { 1852 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1853 goto done; 1854 } 1855 } 1856 1857 if (pdata->wolopts & WAKE_ARP) { 1858 const u8 arp[] = {0x08, 0x06}; 1859 netdev_info(dev->net, "enabling ARP detection\n"); 1860 1861 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1862 | smsc_crc(arp, 2); 1863 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1864 if (ret < 0) { 1865 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1866 goto done; 1867 } 1868 } 1869 1870 /* clear any pending pattern match packet status */ 1871 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1872 if (ret < 0) { 1873 netdev_warn(dev->net, "Error reading WUCSR\n"); 1874 goto done; 1875 } 1876 1877 val |= WUCSR_WUFR; 1878 1879 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1880 if (ret < 0) { 1881 netdev_warn(dev->net, "Error writing WUCSR\n"); 1882 goto done; 1883 } 1884 1885 netdev_info(dev->net, "enabling packet match detection\n"); 1886 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1887 if (ret < 0) { 1888 netdev_warn(dev->net, "Error reading WUCSR\n"); 1889 goto done; 1890 } 1891 1892 val |= WUCSR_WUEN; 1893 1894 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1895 if (ret < 0) { 1896 netdev_warn(dev->net, "Error writing WUCSR\n"); 1897 goto done; 1898 } 1899 } else { 1900 netdev_info(dev->net, "disabling packet match detection\n"); 1901 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1902 if (ret < 0) { 1903 netdev_warn(dev->net, "Error reading WUCSR\n"); 1904 goto done; 1905 } 1906 1907 val &= ~WUCSR_WUEN; 1908 1909 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1910 if (ret < 0) { 1911 netdev_warn(dev->net, "Error writing WUCSR\n"); 1912 goto done; 1913 } 1914 } 1915 1916 /* disable magic, bcast & unicast wakeup sources */ 1917 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1918 if (ret < 0) { 1919 netdev_warn(dev->net, "Error reading WUCSR\n"); 1920 goto done; 1921 } 1922 1923 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1924 1925 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1926 if (ret < 0) { 1927 netdev_warn(dev->net, "Error writing WUCSR\n"); 1928 goto done; 1929 } 1930 1931 if (pdata->wolopts & WAKE_PHY) { 1932 netdev_info(dev->net, "enabling PHY wakeup\n"); 1933 1934 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1935 if (ret < 0) { 1936 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1937 goto done; 1938 } 1939 1940 /* clear wol status, enable energy detection */ 1941 val &= ~PMT_CTL_WUPS; 1942 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1943 1944 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1945 if (ret < 0) { 1946 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1947 goto done; 1948 } 1949 } 1950 1951 if (pdata->wolopts & WAKE_MAGIC) { 1952 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1953 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1954 if (ret < 0) { 1955 netdev_warn(dev->net, "Error reading WUCSR\n"); 1956 goto done; 1957 } 1958 1959 /* clear any pending magic packet status */ 1960 val |= WUCSR_MPR | WUCSR_MPEN; 1961 1962 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1963 if (ret < 0) { 1964 netdev_warn(dev->net, "Error writing WUCSR\n"); 1965 goto done; 1966 } 1967 } 1968 1969 if (pdata->wolopts & WAKE_BCAST) { 1970 netdev_info(dev->net, "enabling broadcast detection\n"); 1971 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1972 if (ret < 0) { 1973 netdev_warn(dev->net, "Error reading WUCSR\n"); 1974 goto done; 1975 } 1976 1977 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1978 1979 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1980 if (ret < 0) { 1981 netdev_warn(dev->net, "Error writing WUCSR\n"); 1982 goto done; 1983 } 1984 } 1985 1986 if (pdata->wolopts & WAKE_UCAST) { 1987 netdev_info(dev->net, "enabling unicast detection\n"); 1988 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1989 if (ret < 0) { 1990 netdev_warn(dev->net, "Error reading WUCSR\n"); 1991 goto done; 1992 } 1993 1994 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1995 1996 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1997 if (ret < 0) { 1998 netdev_warn(dev->net, "Error writing WUCSR\n"); 1999 goto done; 2000 } 2001 } 2002 2003 /* enable receiver to enable frame reception */ 2004 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2005 if (ret < 0) { 2006 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2007 goto done; 2008 } 2009 2010 val |= MAC_RX_RXEN; 2011 2012 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2013 if (ret < 0) { 2014 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2015 goto done; 2016 } 2017 2018 /* some wol options are enabled, so enter SUSPEND0 */ 2019 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2020 ret = smsc75xx_enter_suspend0(dev); 2021 2022 done: 2023 /* 2024 * TODO: resume() might need to handle the suspend failure 2025 * in system sleep 2026 */ 2027 if (ret && PMSG_IS_AUTO(message)) 2028 usbnet_resume(intf); 2029 return ret; 2030 } 2031 2032 static int smsc75xx_resume(struct usb_interface *intf) 2033 { 2034 struct usbnet *dev = usb_get_intfdata(intf); 2035 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2036 u8 suspend_flags = pdata->suspend_flags; 2037 int ret; 2038 u32 val; 2039 2040 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2041 2042 /* do this first to ensure it's cleared even in error case */ 2043 pdata->suspend_flags = 0; 2044 2045 if (suspend_flags & SUSPEND_ALLMODES) { 2046 /* Disable wakeup sources */ 2047 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2048 if (ret < 0) { 2049 netdev_warn(dev->net, "Error reading WUCSR\n"); 2050 return ret; 2051 } 2052 2053 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2054 | WUCSR_BCST_EN); 2055 2056 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2057 if (ret < 0) { 2058 netdev_warn(dev->net, "Error writing WUCSR\n"); 2059 return ret; 2060 } 2061 2062 /* clear wake-up status */ 2063 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2064 if (ret < 0) { 2065 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2066 return ret; 2067 } 2068 2069 val &= ~PMT_CTL_WOL_EN; 2070 val |= PMT_CTL_WUPS; 2071 2072 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2073 if (ret < 0) { 2074 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2075 return ret; 2076 } 2077 } 2078 2079 if (suspend_flags & SUSPEND_SUSPEND2) { 2080 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2081 2082 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2083 if (ret < 0) { 2084 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2085 return ret; 2086 } 2087 2088 val |= PMT_CTL_PHY_PWRUP; 2089 2090 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2091 if (ret < 0) { 2092 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2093 return ret; 2094 } 2095 } 2096 2097 ret = smsc75xx_wait_ready(dev, 1); 2098 if (ret < 0) { 2099 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2100 return ret; 2101 } 2102 2103 return usbnet_resume(intf); 2104 } 2105 2106 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2107 u32 rx_cmd_a, u32 rx_cmd_b) 2108 { 2109 if (!(dev->net->features & NETIF_F_RXCSUM) || 2110 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2111 skb->ip_summed = CHECKSUM_NONE; 2112 } else { 2113 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2114 skb->ip_summed = CHECKSUM_COMPLETE; 2115 } 2116 } 2117 2118 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2119 { 2120 /* This check is no longer done by usbnet */ 2121 if (skb->len < dev->net->hard_header_len) 2122 return 0; 2123 2124 while (skb->len > 0) { 2125 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2126 struct sk_buff *ax_skb; 2127 unsigned char *packet; 2128 2129 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2130 le32_to_cpus(&rx_cmd_a); 2131 skb_pull(skb, 4); 2132 2133 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2134 le32_to_cpus(&rx_cmd_b); 2135 skb_pull(skb, 4 + RXW_PADDING); 2136 2137 packet = skb->data; 2138 2139 /* get the packet length */ 2140 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2141 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2142 2143 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2144 netif_dbg(dev, rx_err, dev->net, 2145 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2146 dev->net->stats.rx_errors++; 2147 dev->net->stats.rx_dropped++; 2148 2149 if (rx_cmd_a & RX_CMD_A_FCS) 2150 dev->net->stats.rx_crc_errors++; 2151 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2152 dev->net->stats.rx_frame_errors++; 2153 } else { 2154 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2155 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2156 netif_dbg(dev, rx_err, dev->net, 2157 "size err rx_cmd_a=0x%08x\n", 2158 rx_cmd_a); 2159 return 0; 2160 } 2161 2162 /* last frame in this batch */ 2163 if (skb->len == size) { 2164 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2165 rx_cmd_b); 2166 2167 skb_trim(skb, skb->len - 4); /* remove fcs */ 2168 skb->truesize = size + sizeof(struct sk_buff); 2169 2170 return 1; 2171 } 2172 2173 ax_skb = skb_clone(skb, GFP_ATOMIC); 2174 if (unlikely(!ax_skb)) { 2175 netdev_warn(dev->net, "Error allocating skb\n"); 2176 return 0; 2177 } 2178 2179 ax_skb->len = size; 2180 ax_skb->data = packet; 2181 skb_set_tail_pointer(ax_skb, size); 2182 2183 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2184 rx_cmd_b); 2185 2186 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2187 ax_skb->truesize = size + sizeof(struct sk_buff); 2188 2189 usbnet_skb_return(dev, ax_skb); 2190 } 2191 2192 skb_pull(skb, size); 2193 2194 /* padding bytes before the next frame starts */ 2195 if (skb->len) 2196 skb_pull(skb, align_count); 2197 } 2198 2199 return 1; 2200 } 2201 2202 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2203 struct sk_buff *skb, gfp_t flags) 2204 { 2205 u32 tx_cmd_a, tx_cmd_b; 2206 2207 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { 2208 dev_kfree_skb_any(skb); 2209 return NULL; 2210 } 2211 2212 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2213 2214 if (skb->ip_summed == CHECKSUM_PARTIAL) 2215 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2216 2217 if (skb_is_gso(skb)) { 2218 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2219 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2220 2221 tx_cmd_a |= TX_CMD_A_LSO; 2222 } else { 2223 tx_cmd_b = 0; 2224 } 2225 2226 skb_push(skb, 4); 2227 cpu_to_le32s(&tx_cmd_b); 2228 memcpy(skb->data, &tx_cmd_b, 4); 2229 2230 skb_push(skb, 4); 2231 cpu_to_le32s(&tx_cmd_a); 2232 memcpy(skb->data, &tx_cmd_a, 4); 2233 2234 return skb; 2235 } 2236 2237 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2238 { 2239 dev->intf->needs_remote_wakeup = on; 2240 return 0; 2241 } 2242 2243 static const struct driver_info smsc75xx_info = { 2244 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2245 .bind = smsc75xx_bind, 2246 .unbind = smsc75xx_unbind, 2247 .link_reset = smsc75xx_link_reset, 2248 .reset = smsc75xx_reset, 2249 .rx_fixup = smsc75xx_rx_fixup, 2250 .tx_fixup = smsc75xx_tx_fixup, 2251 .status = smsc75xx_status, 2252 .manage_power = smsc75xx_manage_power, 2253 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2254 }; 2255 2256 static const struct usb_device_id products[] = { 2257 { 2258 /* SMSC7500 USB Gigabit Ethernet Device */ 2259 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2260 .driver_info = (unsigned long) &smsc75xx_info, 2261 }, 2262 { 2263 /* SMSC7500 USB Gigabit Ethernet Device */ 2264 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2265 .driver_info = (unsigned long) &smsc75xx_info, 2266 }, 2267 { }, /* END */ 2268 }; 2269 MODULE_DEVICE_TABLE(usb, products); 2270 2271 static struct usb_driver smsc75xx_driver = { 2272 .name = SMSC_CHIPNAME, 2273 .id_table = products, 2274 .probe = usbnet_probe, 2275 .suspend = smsc75xx_suspend, 2276 .resume = smsc75xx_resume, 2277 .reset_resume = smsc75xx_resume, 2278 .disconnect = usbnet_disconnect, 2279 .disable_hub_initiated_lpm = 1, 2280 .supports_autosuspend = 1, 2281 }; 2282 2283 module_usb_driver(smsc75xx_driver); 2284 2285 MODULE_AUTHOR("Nancy Lin"); 2286 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2287 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2288 MODULE_LICENSE("GPL"); 2289