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); 105 106 le32_to_cpus(&buf); 107 *data = buf; 108 109 return ret; 110 } 111 112 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 113 u32 data, int in_pm) 114 { 115 u32 buf; 116 int ret; 117 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 118 119 BUG_ON(!dev); 120 121 if (!in_pm) 122 fn = usbnet_write_cmd; 123 else 124 fn = usbnet_write_cmd_nopm; 125 126 buf = data; 127 cpu_to_le32s(&buf); 128 129 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 130 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 131 0, index, &buf, 4); 132 if (unlikely(ret < 0)) 133 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 134 index, ret); 135 136 return ret; 137 } 138 139 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 140 u32 *data) 141 { 142 return __smsc75xx_read_reg(dev, index, data, 1); 143 } 144 145 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 146 u32 data) 147 { 148 return __smsc75xx_write_reg(dev, index, data, 1); 149 } 150 151 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 152 u32 *data) 153 { 154 return __smsc75xx_read_reg(dev, index, data, 0); 155 } 156 157 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 158 u32 data) 159 { 160 return __smsc75xx_write_reg(dev, index, data, 0); 161 } 162 163 /* Loop until the read is completed with timeout 164 * called with phy_mutex held */ 165 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 166 int in_pm) 167 { 168 unsigned long start_time = jiffies; 169 u32 val; 170 int ret; 171 172 do { 173 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 174 if (ret < 0) { 175 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 176 return ret; 177 } 178 179 if (!(val & MII_ACCESS_BUSY)) 180 return 0; 181 } while (!time_after(jiffies, start_time + HZ)); 182 183 return -EIO; 184 } 185 186 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 187 int in_pm) 188 { 189 struct usbnet *dev = netdev_priv(netdev); 190 u32 val, addr; 191 int ret; 192 193 mutex_lock(&dev->phy_mutex); 194 195 /* confirm MII not busy */ 196 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 197 if (ret < 0) { 198 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 199 goto done; 200 } 201 202 /* set the address, index & direction (read from PHY) */ 203 phy_id &= dev->mii.phy_id_mask; 204 idx &= dev->mii.reg_num_mask; 205 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 206 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 207 | MII_ACCESS_READ | MII_ACCESS_BUSY; 208 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 209 if (ret < 0) { 210 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 211 goto done; 212 } 213 214 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 215 if (ret < 0) { 216 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 217 goto done; 218 } 219 220 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 221 if (ret < 0) { 222 netdev_warn(dev->net, "Error reading MII_DATA\n"); 223 goto done; 224 } 225 226 ret = (u16)(val & 0xFFFF); 227 228 done: 229 mutex_unlock(&dev->phy_mutex); 230 return ret; 231 } 232 233 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 234 int idx, int regval, int in_pm) 235 { 236 struct usbnet *dev = netdev_priv(netdev); 237 u32 val, addr; 238 int ret; 239 240 mutex_lock(&dev->phy_mutex); 241 242 /* confirm MII not busy */ 243 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 244 if (ret < 0) { 245 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 246 goto done; 247 } 248 249 val = regval; 250 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 251 if (ret < 0) { 252 netdev_warn(dev->net, "Error writing MII_DATA\n"); 253 goto done; 254 } 255 256 /* set the address, index & direction (write to PHY) */ 257 phy_id &= dev->mii.phy_id_mask; 258 idx &= dev->mii.reg_num_mask; 259 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 260 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 261 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 262 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 263 if (ret < 0) { 264 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 265 goto done; 266 } 267 268 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 269 if (ret < 0) { 270 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 271 goto done; 272 } 273 274 done: 275 mutex_unlock(&dev->phy_mutex); 276 } 277 278 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 279 int idx) 280 { 281 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 282 } 283 284 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 285 int idx, int regval) 286 { 287 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 288 } 289 290 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 291 { 292 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 293 } 294 295 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 296 int regval) 297 { 298 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 299 } 300 301 static int smsc75xx_wait_eeprom(struct usbnet *dev) 302 { 303 unsigned long start_time = jiffies; 304 u32 val; 305 int ret; 306 307 do { 308 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 309 if (ret < 0) { 310 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 311 return ret; 312 } 313 314 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 315 break; 316 udelay(40); 317 } while (!time_after(jiffies, start_time + HZ)); 318 319 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 320 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 321 return -EIO; 322 } 323 324 return 0; 325 } 326 327 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 328 { 329 unsigned long start_time = jiffies; 330 u32 val; 331 int ret; 332 333 do { 334 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 335 if (ret < 0) { 336 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 337 return ret; 338 } 339 340 if (!(val & E2P_CMD_BUSY)) 341 return 0; 342 343 udelay(40); 344 } while (!time_after(jiffies, start_time + HZ)); 345 346 netdev_warn(dev->net, "EEPROM is busy\n"); 347 return -EIO; 348 } 349 350 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 351 u8 *data) 352 { 353 u32 val; 354 int i, ret; 355 356 BUG_ON(!dev); 357 BUG_ON(!data); 358 359 ret = smsc75xx_eeprom_confirm_not_busy(dev); 360 if (ret) 361 return ret; 362 363 for (i = 0; i < length; i++) { 364 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 365 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 366 if (ret < 0) { 367 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 368 return ret; 369 } 370 371 ret = smsc75xx_wait_eeprom(dev); 372 if (ret < 0) 373 return ret; 374 375 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 376 if (ret < 0) { 377 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 378 return ret; 379 } 380 381 data[i] = val & 0xFF; 382 offset++; 383 } 384 385 return 0; 386 } 387 388 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 389 u8 *data) 390 { 391 u32 val; 392 int i, ret; 393 394 BUG_ON(!dev); 395 BUG_ON(!data); 396 397 ret = smsc75xx_eeprom_confirm_not_busy(dev); 398 if (ret) 399 return ret; 400 401 /* Issue write/erase enable command */ 402 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 403 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 404 if (ret < 0) { 405 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 406 return ret; 407 } 408 409 ret = smsc75xx_wait_eeprom(dev); 410 if (ret < 0) 411 return ret; 412 413 for (i = 0; i < length; i++) { 414 415 /* Fill data register */ 416 val = data[i]; 417 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 418 if (ret < 0) { 419 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 420 return ret; 421 } 422 423 /* Send "write" command */ 424 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 425 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 426 if (ret < 0) { 427 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 428 return ret; 429 } 430 431 ret = smsc75xx_wait_eeprom(dev); 432 if (ret < 0) 433 return ret; 434 435 offset++; 436 } 437 438 return 0; 439 } 440 441 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 442 { 443 int i, ret; 444 445 for (i = 0; i < 100; i++) { 446 u32 dp_sel; 447 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 448 if (ret < 0) { 449 netdev_warn(dev->net, "Error reading DP_SEL\n"); 450 return ret; 451 } 452 453 if (dp_sel & DP_SEL_DPRDY) 454 return 0; 455 456 udelay(40); 457 } 458 459 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 460 461 return -EIO; 462 } 463 464 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 465 u32 length, u32 *buf) 466 { 467 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 468 u32 dp_sel; 469 int i, ret; 470 471 mutex_lock(&pdata->dataport_mutex); 472 473 ret = smsc75xx_dataport_wait_not_busy(dev); 474 if (ret < 0) { 475 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 476 goto done; 477 } 478 479 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 480 if (ret < 0) { 481 netdev_warn(dev->net, "Error reading DP_SEL\n"); 482 goto done; 483 } 484 485 dp_sel &= ~DP_SEL_RSEL; 486 dp_sel |= ram_select; 487 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 488 if (ret < 0) { 489 netdev_warn(dev->net, "Error writing DP_SEL\n"); 490 goto done; 491 } 492 493 for (i = 0; i < length; i++) { 494 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 495 if (ret < 0) { 496 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 497 goto done; 498 } 499 500 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 501 if (ret < 0) { 502 netdev_warn(dev->net, "Error writing DP_DATA\n"); 503 goto done; 504 } 505 506 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 507 if (ret < 0) { 508 netdev_warn(dev->net, "Error writing DP_CMD\n"); 509 goto done; 510 } 511 512 ret = smsc75xx_dataport_wait_not_busy(dev); 513 if (ret < 0) { 514 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 515 goto done; 516 } 517 } 518 519 done: 520 mutex_unlock(&pdata->dataport_mutex); 521 return ret; 522 } 523 524 /* returns hash bit number for given MAC address */ 525 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 526 { 527 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 528 } 529 530 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 531 { 532 struct smsc75xx_priv *pdata = 533 container_of(param, struct smsc75xx_priv, set_multicast); 534 struct usbnet *dev = pdata->dev; 535 int ret; 536 537 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 538 pdata->rfe_ctl); 539 540 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 541 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 542 543 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 544 if (ret < 0) 545 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 546 } 547 548 static void smsc75xx_set_multicast(struct net_device *netdev) 549 { 550 struct usbnet *dev = netdev_priv(netdev); 551 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 552 unsigned long flags; 553 int i; 554 555 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 556 557 pdata->rfe_ctl &= 558 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 559 pdata->rfe_ctl |= RFE_CTL_AB; 560 561 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 562 pdata->multicast_hash_table[i] = 0; 563 564 if (dev->net->flags & IFF_PROMISC) { 565 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 566 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 567 } else if (dev->net->flags & IFF_ALLMULTI) { 568 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 569 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 570 } else if (!netdev_mc_empty(dev->net)) { 571 struct netdev_hw_addr *ha; 572 573 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 574 575 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 576 577 netdev_for_each_mc_addr(ha, netdev) { 578 u32 bitnum = smsc75xx_hash(ha->addr); 579 pdata->multicast_hash_table[bitnum / 32] |= 580 (1 << (bitnum % 32)); 581 } 582 } else { 583 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 584 pdata->rfe_ctl |= RFE_CTL_DPF; 585 } 586 587 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 588 589 /* defer register writes to a sleepable context */ 590 schedule_work(&pdata->set_multicast); 591 } 592 593 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 594 u16 lcladv, u16 rmtadv) 595 { 596 u32 flow = 0, fct_flow = 0; 597 int ret; 598 599 if (duplex == DUPLEX_FULL) { 600 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 601 602 if (cap & FLOW_CTRL_TX) { 603 flow = (FLOW_TX_FCEN | 0xFFFF); 604 /* set fct_flow thresholds to 20% and 80% */ 605 fct_flow = (8 << 8) | 32; 606 } 607 608 if (cap & FLOW_CTRL_RX) 609 flow |= FLOW_RX_FCEN; 610 611 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 612 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 613 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 614 } else { 615 netif_dbg(dev, link, dev->net, "half duplex\n"); 616 } 617 618 ret = smsc75xx_write_reg(dev, FLOW, flow); 619 if (ret < 0) { 620 netdev_warn(dev->net, "Error writing FLOW\n"); 621 return ret; 622 } 623 624 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 625 if (ret < 0) { 626 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 627 return ret; 628 } 629 630 return 0; 631 } 632 633 static int smsc75xx_link_reset(struct usbnet *dev) 634 { 635 struct mii_if_info *mii = &dev->mii; 636 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 637 u16 lcladv, rmtadv; 638 int ret; 639 640 /* write to clear phy interrupt status */ 641 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 642 PHY_INT_SRC_CLEAR_ALL); 643 644 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 645 if (ret < 0) { 646 netdev_warn(dev->net, "Error writing INT_STS\n"); 647 return ret; 648 } 649 650 mii_check_media(mii, 1, 1); 651 mii_ethtool_gset(&dev->mii, &ecmd); 652 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 653 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 654 655 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 656 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 657 658 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 659 } 660 661 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 662 { 663 u32 intdata; 664 665 if (urb->actual_length != 4) { 666 netdev_warn(dev->net, "unexpected urb length %d\n", 667 urb->actual_length); 668 return; 669 } 670 671 memcpy(&intdata, urb->transfer_buffer, 4); 672 le32_to_cpus(&intdata); 673 674 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 675 676 if (intdata & INT_ENP_PHY_INT) 677 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 678 else 679 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 680 intdata); 681 } 682 683 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 684 { 685 return MAX_EEPROM_SIZE; 686 } 687 688 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 689 struct ethtool_eeprom *ee, u8 *data) 690 { 691 struct usbnet *dev = netdev_priv(netdev); 692 693 ee->magic = LAN75XX_EEPROM_MAGIC; 694 695 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 696 } 697 698 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 699 struct ethtool_eeprom *ee, u8 *data) 700 { 701 struct usbnet *dev = netdev_priv(netdev); 702 703 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 704 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 705 ee->magic); 706 return -EINVAL; 707 } 708 709 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 710 } 711 712 static void smsc75xx_ethtool_get_wol(struct net_device *net, 713 struct ethtool_wolinfo *wolinfo) 714 { 715 struct usbnet *dev = netdev_priv(net); 716 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 717 718 wolinfo->supported = SUPPORTED_WAKE; 719 wolinfo->wolopts = pdata->wolopts; 720 } 721 722 static int smsc75xx_ethtool_set_wol(struct net_device *net, 723 struct ethtool_wolinfo *wolinfo) 724 { 725 struct usbnet *dev = netdev_priv(net); 726 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 727 int ret; 728 729 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 730 731 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 732 if (ret < 0) 733 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 734 735 return ret; 736 } 737 738 static const struct ethtool_ops smsc75xx_ethtool_ops = { 739 .get_link = usbnet_get_link, 740 .nway_reset = usbnet_nway_reset, 741 .get_drvinfo = usbnet_get_drvinfo, 742 .get_msglevel = usbnet_get_msglevel, 743 .set_msglevel = usbnet_set_msglevel, 744 .get_settings = usbnet_get_settings, 745 .set_settings = usbnet_set_settings, 746 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 747 .get_eeprom = smsc75xx_ethtool_get_eeprom, 748 .set_eeprom = smsc75xx_ethtool_set_eeprom, 749 .get_wol = smsc75xx_ethtool_get_wol, 750 .set_wol = smsc75xx_ethtool_set_wol, 751 }; 752 753 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 754 { 755 struct usbnet *dev = netdev_priv(netdev); 756 757 if (!netif_running(netdev)) 758 return -EINVAL; 759 760 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 761 } 762 763 static void smsc75xx_init_mac_address(struct usbnet *dev) 764 { 765 const u8 *mac_addr; 766 767 /* maybe the boot loader passed the MAC address in devicetree */ 768 mac_addr = of_get_mac_address(dev->udev->dev.of_node); 769 if (mac_addr) { 770 memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN); 771 return; 772 } 773 774 /* try reading mac address from EEPROM */ 775 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 776 dev->net->dev_addr) == 0) { 777 if (is_valid_ether_addr(dev->net->dev_addr)) { 778 /* eeprom values are valid so use them */ 779 netif_dbg(dev, ifup, dev->net, 780 "MAC address read from EEPROM\n"); 781 return; 782 } 783 } 784 785 /* no useful static MAC address found. generate a random one */ 786 eth_hw_addr_random(dev->net); 787 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 788 } 789 790 static int smsc75xx_set_mac_address(struct usbnet *dev) 791 { 792 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 793 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 794 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 795 796 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 797 if (ret < 0) { 798 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 799 return ret; 800 } 801 802 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 803 if (ret < 0) { 804 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 805 return ret; 806 } 807 808 addr_hi |= ADDR_FILTX_FB_VALID; 809 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 810 if (ret < 0) { 811 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 812 return ret; 813 } 814 815 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 816 if (ret < 0) 817 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 818 819 return ret; 820 } 821 822 static int smsc75xx_phy_initialize(struct usbnet *dev) 823 { 824 int bmcr, ret, timeout = 0; 825 826 /* Initialize MII structure */ 827 dev->mii.dev = dev->net; 828 dev->mii.mdio_read = smsc75xx_mdio_read; 829 dev->mii.mdio_write = smsc75xx_mdio_write; 830 dev->mii.phy_id_mask = 0x1f; 831 dev->mii.reg_num_mask = 0x1f; 832 dev->mii.supports_gmii = 1; 833 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 834 835 /* reset phy and wait for reset to complete */ 836 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 837 838 do { 839 msleep(10); 840 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 841 if (bmcr < 0) { 842 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 843 return bmcr; 844 } 845 timeout++; 846 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 847 848 if (timeout >= 100) { 849 netdev_warn(dev->net, "timeout on PHY Reset\n"); 850 return -EIO; 851 } 852 853 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, 854 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | 855 ADVERTISE_PAUSE_ASYM); 856 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, 857 ADVERTISE_1000FULL); 858 859 /* read and write to clear phy interrupt status */ 860 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); 861 if (ret < 0) { 862 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 863 return ret; 864 } 865 866 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); 867 868 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, 869 PHY_INT_MASK_DEFAULT); 870 mii_nway_restart(&dev->mii); 871 872 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n"); 873 return 0; 874 } 875 876 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) 877 { 878 int ret = 0; 879 u32 buf; 880 bool rxenabled; 881 882 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 883 if (ret < 0) { 884 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 885 return ret; 886 } 887 888 rxenabled = ((buf & MAC_RX_RXEN) != 0); 889 890 if (rxenabled) { 891 buf &= ~MAC_RX_RXEN; 892 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 893 if (ret < 0) { 894 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 895 return ret; 896 } 897 } 898 899 /* add 4 to size for FCS */ 900 buf &= ~MAC_RX_MAX_SIZE; 901 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE); 902 903 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 if (rxenabled) { 910 buf |= MAC_RX_RXEN; 911 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 912 if (ret < 0) { 913 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 914 return ret; 915 } 916 } 917 918 return 0; 919 } 920 921 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) 922 { 923 struct usbnet *dev = netdev_priv(netdev); 924 int ret; 925 926 if (new_mtu > MAX_SINGLE_PACKET_SIZE) 927 return -EINVAL; 928 929 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 930 if (ret < 0) { 931 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 932 return ret; 933 } 934 935 return usbnet_change_mtu(netdev, new_mtu); 936 } 937 938 /* Enable or disable Rx checksum offload engine */ 939 static int smsc75xx_set_features(struct net_device *netdev, 940 netdev_features_t features) 941 { 942 struct usbnet *dev = netdev_priv(netdev); 943 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 944 unsigned long flags; 945 int ret; 946 947 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 948 949 if (features & NETIF_F_RXCSUM) 950 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 951 else 952 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 953 954 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 955 /* it's racing here! */ 956 957 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 958 if (ret < 0) 959 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 960 961 return ret; 962 } 963 964 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 965 { 966 int timeout = 0; 967 968 do { 969 u32 buf; 970 int ret; 971 972 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 973 974 if (ret < 0) { 975 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 976 return ret; 977 } 978 979 if (buf & PMT_CTL_DEV_RDY) 980 return 0; 981 982 msleep(10); 983 timeout++; 984 } while (timeout < 100); 985 986 netdev_warn(dev->net, "timeout waiting for device ready\n"); 987 return -EIO; 988 } 989 990 static int smsc75xx_reset(struct usbnet *dev) 991 { 992 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 993 u32 buf; 994 int ret = 0, timeout; 995 996 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 997 998 ret = smsc75xx_wait_ready(dev, 0); 999 if (ret < 0) { 1000 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 1001 return ret; 1002 } 1003 1004 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1005 if (ret < 0) { 1006 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1007 return ret; 1008 } 1009 1010 buf |= HW_CFG_LRST; 1011 1012 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1013 if (ret < 0) { 1014 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1015 return ret; 1016 } 1017 1018 timeout = 0; 1019 do { 1020 msleep(10); 1021 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1022 if (ret < 0) { 1023 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1024 return ret; 1025 } 1026 timeout++; 1027 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1028 1029 if (timeout >= 100) { 1030 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1031 return -EIO; 1032 } 1033 1034 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1035 1036 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1037 if (ret < 0) { 1038 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1039 return ret; 1040 } 1041 1042 buf |= PMT_CTL_PHY_RST; 1043 1044 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1045 if (ret < 0) { 1046 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1047 return ret; 1048 } 1049 1050 timeout = 0; 1051 do { 1052 msleep(10); 1053 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1054 if (ret < 0) { 1055 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1056 return ret; 1057 } 1058 timeout++; 1059 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1060 1061 if (timeout >= 100) { 1062 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1063 return -EIO; 1064 } 1065 1066 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1067 1068 ret = smsc75xx_set_mac_address(dev); 1069 if (ret < 0) { 1070 netdev_warn(dev->net, "Failed to set mac address\n"); 1071 return ret; 1072 } 1073 1074 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1075 dev->net->dev_addr); 1076 1077 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1078 if (ret < 0) { 1079 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1080 return ret; 1081 } 1082 1083 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1084 buf); 1085 1086 buf |= HW_CFG_BIR; 1087 1088 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1089 if (ret < 0) { 1090 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1091 return ret; 1092 } 1093 1094 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1095 if (ret < 0) { 1096 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1097 return ret; 1098 } 1099 1100 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1101 buf); 1102 1103 if (!turbo_mode) { 1104 buf = 0; 1105 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1106 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1107 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1108 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1109 } else { 1110 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1111 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1112 } 1113 1114 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1115 (ulong)dev->rx_urb_size); 1116 1117 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1118 if (ret < 0) { 1119 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1120 return ret; 1121 } 1122 1123 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1124 if (ret < 0) { 1125 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1126 return ret; 1127 } 1128 1129 netif_dbg(dev, ifup, dev->net, 1130 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1131 1132 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1133 if (ret < 0) { 1134 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1135 return ret; 1136 } 1137 1138 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1139 if (ret < 0) { 1140 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1141 return ret; 1142 } 1143 1144 netif_dbg(dev, ifup, dev->net, 1145 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1146 1147 if (turbo_mode) { 1148 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1149 if (ret < 0) { 1150 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1151 return ret; 1152 } 1153 1154 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1155 1156 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1157 1158 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1159 if (ret < 0) { 1160 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1161 return ret; 1162 } 1163 1164 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1165 if (ret < 0) { 1166 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1167 return ret; 1168 } 1169 1170 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1171 } 1172 1173 /* set FIFO sizes */ 1174 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1175 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1176 if (ret < 0) { 1177 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1178 return ret; 1179 } 1180 1181 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1182 1183 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1184 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1185 if (ret < 0) { 1186 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1187 return ret; 1188 } 1189 1190 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1191 1192 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1193 if (ret < 0) { 1194 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1195 return ret; 1196 } 1197 1198 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1199 if (ret < 0) { 1200 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1201 return ret; 1202 } 1203 1204 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1205 1206 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1207 if (ret < 0) { 1208 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1209 return ret; 1210 } 1211 1212 /* only set default GPIO/LED settings if no EEPROM is detected */ 1213 if (!(buf & E2P_CMD_LOADED)) { 1214 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1215 if (ret < 0) { 1216 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1217 return ret; 1218 } 1219 1220 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1221 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1222 1223 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1224 if (ret < 0) { 1225 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1226 return ret; 1227 } 1228 } 1229 1230 ret = smsc75xx_write_reg(dev, FLOW, 0); 1231 if (ret < 0) { 1232 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1233 return ret; 1234 } 1235 1236 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1237 if (ret < 0) { 1238 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1239 return ret; 1240 } 1241 1242 /* Don't need rfe_ctl_lock during initialisation */ 1243 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1244 if (ret < 0) { 1245 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1246 return ret; 1247 } 1248 1249 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1250 1251 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1252 if (ret < 0) { 1253 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1254 return ret; 1255 } 1256 1257 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1258 if (ret < 0) { 1259 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1260 return ret; 1261 } 1262 1263 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1264 pdata->rfe_ctl); 1265 1266 /* Enable or disable checksum offload engines */ 1267 smsc75xx_set_features(dev->net, dev->net->features); 1268 1269 smsc75xx_set_multicast(dev->net); 1270 1271 ret = smsc75xx_phy_initialize(dev); 1272 if (ret < 0) { 1273 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1274 return ret; 1275 } 1276 1277 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1278 if (ret < 0) { 1279 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1280 return ret; 1281 } 1282 1283 /* enable PHY interrupts */ 1284 buf |= INT_ENP_PHY_INT; 1285 1286 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1287 if (ret < 0) { 1288 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1289 return ret; 1290 } 1291 1292 /* allow mac to detect speed and duplex from phy */ 1293 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1294 if (ret < 0) { 1295 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1296 return ret; 1297 } 1298 1299 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1300 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1301 if (ret < 0) { 1302 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1303 return ret; 1304 } 1305 1306 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1307 if (ret < 0) { 1308 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1309 return ret; 1310 } 1311 1312 buf |= MAC_TX_TXEN; 1313 1314 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1315 if (ret < 0) { 1316 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1317 return ret; 1318 } 1319 1320 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1321 1322 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1323 if (ret < 0) { 1324 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1325 return ret; 1326 } 1327 1328 buf |= FCT_TX_CTL_EN; 1329 1330 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1331 if (ret < 0) { 1332 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1333 return ret; 1334 } 1335 1336 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1337 1338 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1339 if (ret < 0) { 1340 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1341 return ret; 1342 } 1343 1344 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1345 if (ret < 0) { 1346 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1347 return ret; 1348 } 1349 1350 buf |= MAC_RX_RXEN; 1351 1352 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1353 if (ret < 0) { 1354 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1355 return ret; 1356 } 1357 1358 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1359 1360 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1361 if (ret < 0) { 1362 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1363 return ret; 1364 } 1365 1366 buf |= FCT_RX_CTL_EN; 1367 1368 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1369 if (ret < 0) { 1370 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1371 return ret; 1372 } 1373 1374 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1375 1376 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1377 return 0; 1378 } 1379 1380 static const struct net_device_ops smsc75xx_netdev_ops = { 1381 .ndo_open = usbnet_open, 1382 .ndo_stop = usbnet_stop, 1383 .ndo_start_xmit = usbnet_start_xmit, 1384 .ndo_tx_timeout = usbnet_tx_timeout, 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 return 0; 1450 } 1451 1452 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1453 { 1454 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1455 if (pdata) { 1456 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1457 kfree(pdata); 1458 pdata = NULL; 1459 dev->data[0] = 0; 1460 } 1461 } 1462 1463 static u16 smsc_crc(const u8 *buffer, size_t len) 1464 { 1465 return bitrev16(crc16(0xFFFF, buffer, len)); 1466 } 1467 1468 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1469 u32 wuf_mask1) 1470 { 1471 int cfg_base = WUF_CFGX + filter * 4; 1472 int mask_base = WUF_MASKX + filter * 16; 1473 int ret; 1474 1475 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1476 if (ret < 0) { 1477 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1478 return ret; 1479 } 1480 1481 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1482 if (ret < 0) { 1483 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1484 return ret; 1485 } 1486 1487 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1488 if (ret < 0) { 1489 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1490 return ret; 1491 } 1492 1493 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1494 if (ret < 0) { 1495 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1496 return ret; 1497 } 1498 1499 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1500 if (ret < 0) { 1501 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1502 return ret; 1503 } 1504 1505 return 0; 1506 } 1507 1508 static int smsc75xx_enter_suspend0(struct usbnet *dev) 1509 { 1510 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1511 u32 val; 1512 int ret; 1513 1514 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1515 if (ret < 0) { 1516 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1517 return ret; 1518 } 1519 1520 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST)); 1521 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 1522 1523 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1524 if (ret < 0) { 1525 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1526 return ret; 1527 } 1528 1529 pdata->suspend_flags |= SUSPEND_SUSPEND0; 1530 1531 return 0; 1532 } 1533 1534 static int smsc75xx_enter_suspend1(struct usbnet *dev) 1535 { 1536 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1537 u32 val; 1538 int ret; 1539 1540 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1541 if (ret < 0) { 1542 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1543 return ret; 1544 } 1545 1546 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1547 val |= PMT_CTL_SUS_MODE_1; 1548 1549 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1550 if (ret < 0) { 1551 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1552 return ret; 1553 } 1554 1555 /* clear wol status, enable energy detection */ 1556 val &= ~PMT_CTL_WUPS; 1557 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1558 1559 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1560 if (ret < 0) { 1561 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1562 return ret; 1563 } 1564 1565 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1566 1567 return 0; 1568 } 1569 1570 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1571 { 1572 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1573 u32 val; 1574 int ret; 1575 1576 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1577 if (ret < 0) { 1578 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1579 return ret; 1580 } 1581 1582 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1583 val |= PMT_CTL_SUS_MODE_2; 1584 1585 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1586 if (ret < 0) { 1587 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1588 return ret; 1589 } 1590 1591 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1592 1593 return 0; 1594 } 1595 1596 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1597 { 1598 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1599 u32 val; 1600 int ret; 1601 1602 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1603 if (ret < 0) { 1604 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1605 return ret; 1606 } 1607 1608 if (val & FCT_RX_CTL_RXUSED) { 1609 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1610 return -EBUSY; 1611 } 1612 1613 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1614 if (ret < 0) { 1615 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1616 return ret; 1617 } 1618 1619 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1620 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1621 1622 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1623 if (ret < 0) { 1624 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1625 return ret; 1626 } 1627 1628 /* clear wol status */ 1629 val &= ~PMT_CTL_WUPS; 1630 val |= PMT_CTL_WUPS_WOL; 1631 1632 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1633 if (ret < 0) { 1634 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1635 return ret; 1636 } 1637 1638 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1639 1640 return 0; 1641 } 1642 1643 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1644 { 1645 struct mii_if_info *mii = &dev->mii; 1646 int ret; 1647 1648 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1649 1650 /* read to clear */ 1651 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1652 if (ret < 0) { 1653 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1654 return ret; 1655 } 1656 1657 /* enable interrupt source */ 1658 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1659 if (ret < 0) { 1660 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1661 return ret; 1662 } 1663 1664 ret |= mask; 1665 1666 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1667 1668 return 0; 1669 } 1670 1671 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1672 { 1673 struct mii_if_info *mii = &dev->mii; 1674 int ret; 1675 1676 /* first, a dummy read, needed to latch some MII phys */ 1677 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1678 if (ret < 0) { 1679 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1680 return ret; 1681 } 1682 1683 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1684 if (ret < 0) { 1685 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1686 return ret; 1687 } 1688 1689 return !!(ret & BMSR_LSTATUS); 1690 } 1691 1692 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1693 { 1694 int ret; 1695 1696 if (!netif_running(dev->net)) { 1697 /* interface is ifconfig down so fully power down hw */ 1698 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1699 return smsc75xx_enter_suspend2(dev); 1700 } 1701 1702 if (!link_up) { 1703 /* link is down so enter EDPD mode */ 1704 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1705 1706 /* enable PHY wakeup events for if cable is attached */ 1707 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1708 PHY_INT_MASK_ANEG_COMP); 1709 if (ret < 0) { 1710 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1711 return ret; 1712 } 1713 1714 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1715 return smsc75xx_enter_suspend1(dev); 1716 } 1717 1718 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1719 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1720 PHY_INT_MASK_LINK_DOWN); 1721 if (ret < 0) { 1722 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1723 return ret; 1724 } 1725 1726 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1727 return smsc75xx_enter_suspend3(dev); 1728 } 1729 1730 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1731 { 1732 struct usbnet *dev = usb_get_intfdata(intf); 1733 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1734 u32 val, link_up; 1735 int ret; 1736 1737 ret = usbnet_suspend(intf, message); 1738 if (ret < 0) { 1739 netdev_warn(dev->net, "usbnet_suspend error\n"); 1740 return ret; 1741 } 1742 1743 if (pdata->suspend_flags) { 1744 netdev_warn(dev->net, "error during last resume\n"); 1745 pdata->suspend_flags = 0; 1746 } 1747 1748 /* determine if link is up using only _nopm functions */ 1749 link_up = smsc75xx_link_ok_nopm(dev); 1750 1751 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1752 ret = smsc75xx_autosuspend(dev, link_up); 1753 goto done; 1754 } 1755 1756 /* if we get this far we're not autosuspending */ 1757 /* if no wol options set, or if link is down and we're not waking on 1758 * PHY activity, enter lowest power SUSPEND2 mode 1759 */ 1760 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1761 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1762 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1763 1764 /* disable energy detect (link up) & wake up events */ 1765 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1766 if (ret < 0) { 1767 netdev_warn(dev->net, "Error reading WUCSR\n"); 1768 goto done; 1769 } 1770 1771 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1772 1773 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1774 if (ret < 0) { 1775 netdev_warn(dev->net, "Error writing WUCSR\n"); 1776 goto done; 1777 } 1778 1779 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1780 if (ret < 0) { 1781 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1782 goto done; 1783 } 1784 1785 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1786 1787 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1788 if (ret < 0) { 1789 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1790 goto done; 1791 } 1792 1793 ret = smsc75xx_enter_suspend2(dev); 1794 goto done; 1795 } 1796 1797 if (pdata->wolopts & WAKE_PHY) { 1798 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1799 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1800 if (ret < 0) { 1801 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1802 goto done; 1803 } 1804 1805 /* if link is down then configure EDPD and enter SUSPEND1, 1806 * otherwise enter SUSPEND0 below 1807 */ 1808 if (!link_up) { 1809 struct mii_if_info *mii = &dev->mii; 1810 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1811 1812 /* enable energy detect power-down mode */ 1813 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1814 PHY_MODE_CTRL_STS); 1815 if (ret < 0) { 1816 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1817 goto done; 1818 } 1819 1820 ret |= MODE_CTRL_STS_EDPWRDOWN; 1821 1822 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1823 PHY_MODE_CTRL_STS, ret); 1824 1825 /* enter SUSPEND1 mode */ 1826 ret = smsc75xx_enter_suspend1(dev); 1827 goto done; 1828 } 1829 } 1830 1831 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1832 int i, filter = 0; 1833 1834 /* disable all filters */ 1835 for (i = 0; i < WUF_NUM; i++) { 1836 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1837 if (ret < 0) { 1838 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1839 goto done; 1840 } 1841 } 1842 1843 if (pdata->wolopts & WAKE_MCAST) { 1844 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1845 netdev_info(dev->net, "enabling multicast detection\n"); 1846 1847 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1848 | smsc_crc(mcast, 3); 1849 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1850 if (ret < 0) { 1851 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1852 goto done; 1853 } 1854 } 1855 1856 if (pdata->wolopts & WAKE_ARP) { 1857 const u8 arp[] = {0x08, 0x06}; 1858 netdev_info(dev->net, "enabling ARP detection\n"); 1859 1860 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1861 | smsc_crc(arp, 2); 1862 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1863 if (ret < 0) { 1864 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1865 goto done; 1866 } 1867 } 1868 1869 /* clear any pending pattern match packet status */ 1870 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1871 if (ret < 0) { 1872 netdev_warn(dev->net, "Error reading WUCSR\n"); 1873 goto done; 1874 } 1875 1876 val |= WUCSR_WUFR; 1877 1878 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1879 if (ret < 0) { 1880 netdev_warn(dev->net, "Error writing WUCSR\n"); 1881 goto done; 1882 } 1883 1884 netdev_info(dev->net, "enabling packet match detection\n"); 1885 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1886 if (ret < 0) { 1887 netdev_warn(dev->net, "Error reading WUCSR\n"); 1888 goto done; 1889 } 1890 1891 val |= WUCSR_WUEN; 1892 1893 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1894 if (ret < 0) { 1895 netdev_warn(dev->net, "Error writing WUCSR\n"); 1896 goto done; 1897 } 1898 } else { 1899 netdev_info(dev->net, "disabling packet match detection\n"); 1900 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1901 if (ret < 0) { 1902 netdev_warn(dev->net, "Error reading WUCSR\n"); 1903 goto done; 1904 } 1905 1906 val &= ~WUCSR_WUEN; 1907 1908 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1909 if (ret < 0) { 1910 netdev_warn(dev->net, "Error writing WUCSR\n"); 1911 goto done; 1912 } 1913 } 1914 1915 /* disable magic, bcast & unicast wakeup sources */ 1916 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1917 if (ret < 0) { 1918 netdev_warn(dev->net, "Error reading WUCSR\n"); 1919 goto done; 1920 } 1921 1922 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1923 1924 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1925 if (ret < 0) { 1926 netdev_warn(dev->net, "Error writing WUCSR\n"); 1927 goto done; 1928 } 1929 1930 if (pdata->wolopts & WAKE_PHY) { 1931 netdev_info(dev->net, "enabling PHY wakeup\n"); 1932 1933 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1934 if (ret < 0) { 1935 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1936 goto done; 1937 } 1938 1939 /* clear wol status, enable energy detection */ 1940 val &= ~PMT_CTL_WUPS; 1941 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 1942 1943 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1944 if (ret < 0) { 1945 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1946 goto done; 1947 } 1948 } 1949 1950 if (pdata->wolopts & WAKE_MAGIC) { 1951 netdev_info(dev->net, "enabling magic packet wakeup\n"); 1952 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1953 if (ret < 0) { 1954 netdev_warn(dev->net, "Error reading WUCSR\n"); 1955 goto done; 1956 } 1957 1958 /* clear any pending magic packet status */ 1959 val |= WUCSR_MPR | WUCSR_MPEN; 1960 1961 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1962 if (ret < 0) { 1963 netdev_warn(dev->net, "Error writing WUCSR\n"); 1964 goto done; 1965 } 1966 } 1967 1968 if (pdata->wolopts & WAKE_BCAST) { 1969 netdev_info(dev->net, "enabling broadcast detection\n"); 1970 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1971 if (ret < 0) { 1972 netdev_warn(dev->net, "Error reading WUCSR\n"); 1973 goto done; 1974 } 1975 1976 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 1977 1978 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1979 if (ret < 0) { 1980 netdev_warn(dev->net, "Error writing WUCSR\n"); 1981 goto done; 1982 } 1983 } 1984 1985 if (pdata->wolopts & WAKE_UCAST) { 1986 netdev_info(dev->net, "enabling unicast detection\n"); 1987 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1988 if (ret < 0) { 1989 netdev_warn(dev->net, "Error reading WUCSR\n"); 1990 goto done; 1991 } 1992 1993 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 1994 1995 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1996 if (ret < 0) { 1997 netdev_warn(dev->net, "Error writing WUCSR\n"); 1998 goto done; 1999 } 2000 } 2001 2002 /* enable receiver to enable frame reception */ 2003 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2004 if (ret < 0) { 2005 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2006 goto done; 2007 } 2008 2009 val |= MAC_RX_RXEN; 2010 2011 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2012 if (ret < 0) { 2013 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2014 goto done; 2015 } 2016 2017 /* some wol options are enabled, so enter SUSPEND0 */ 2018 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2019 ret = smsc75xx_enter_suspend0(dev); 2020 2021 done: 2022 /* 2023 * TODO: resume() might need to handle the suspend failure 2024 * in system sleep 2025 */ 2026 if (ret && PMSG_IS_AUTO(message)) 2027 usbnet_resume(intf); 2028 return ret; 2029 } 2030 2031 static int smsc75xx_resume(struct usb_interface *intf) 2032 { 2033 struct usbnet *dev = usb_get_intfdata(intf); 2034 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2035 u8 suspend_flags = pdata->suspend_flags; 2036 int ret; 2037 u32 val; 2038 2039 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2040 2041 /* do this first to ensure it's cleared even in error case */ 2042 pdata->suspend_flags = 0; 2043 2044 if (suspend_flags & SUSPEND_ALLMODES) { 2045 /* Disable wakeup sources */ 2046 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2047 if (ret < 0) { 2048 netdev_warn(dev->net, "Error reading WUCSR\n"); 2049 return ret; 2050 } 2051 2052 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2053 | WUCSR_BCST_EN); 2054 2055 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2056 if (ret < 0) { 2057 netdev_warn(dev->net, "Error writing WUCSR\n"); 2058 return ret; 2059 } 2060 2061 /* clear wake-up status */ 2062 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2063 if (ret < 0) { 2064 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2065 return ret; 2066 } 2067 2068 val &= ~PMT_CTL_WOL_EN; 2069 val |= PMT_CTL_WUPS; 2070 2071 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2072 if (ret < 0) { 2073 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2074 return ret; 2075 } 2076 } 2077 2078 if (suspend_flags & SUSPEND_SUSPEND2) { 2079 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2080 2081 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2082 if (ret < 0) { 2083 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2084 return ret; 2085 } 2086 2087 val |= PMT_CTL_PHY_PWRUP; 2088 2089 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2090 if (ret < 0) { 2091 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2092 return ret; 2093 } 2094 } 2095 2096 ret = smsc75xx_wait_ready(dev, 1); 2097 if (ret < 0) { 2098 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2099 return ret; 2100 } 2101 2102 return usbnet_resume(intf); 2103 } 2104 2105 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2106 u32 rx_cmd_a, u32 rx_cmd_b) 2107 { 2108 if (!(dev->net->features & NETIF_F_RXCSUM) || 2109 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2110 skb->ip_summed = CHECKSUM_NONE; 2111 } else { 2112 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2113 skb->ip_summed = CHECKSUM_COMPLETE; 2114 } 2115 } 2116 2117 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2118 { 2119 /* This check is no longer done by usbnet */ 2120 if (skb->len < dev->net->hard_header_len) 2121 return 0; 2122 2123 while (skb->len > 0) { 2124 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2125 struct sk_buff *ax_skb; 2126 unsigned char *packet; 2127 2128 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2129 le32_to_cpus(&rx_cmd_a); 2130 skb_pull(skb, 4); 2131 2132 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2133 le32_to_cpus(&rx_cmd_b); 2134 skb_pull(skb, 4 + RXW_PADDING); 2135 2136 packet = skb->data; 2137 2138 /* get the packet length */ 2139 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2140 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2141 2142 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2143 netif_dbg(dev, rx_err, dev->net, 2144 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2145 dev->net->stats.rx_errors++; 2146 dev->net->stats.rx_dropped++; 2147 2148 if (rx_cmd_a & RX_CMD_A_FCS) 2149 dev->net->stats.rx_crc_errors++; 2150 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2151 dev->net->stats.rx_frame_errors++; 2152 } else { 2153 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2154 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2155 netif_dbg(dev, rx_err, dev->net, 2156 "size err rx_cmd_a=0x%08x\n", 2157 rx_cmd_a); 2158 return 0; 2159 } 2160 2161 /* last frame in this batch */ 2162 if (skb->len == size) { 2163 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2164 rx_cmd_b); 2165 2166 skb_trim(skb, skb->len - 4); /* remove fcs */ 2167 skb->truesize = size + sizeof(struct sk_buff); 2168 2169 return 1; 2170 } 2171 2172 ax_skb = skb_clone(skb, GFP_ATOMIC); 2173 if (unlikely(!ax_skb)) { 2174 netdev_warn(dev->net, "Error allocating skb\n"); 2175 return 0; 2176 } 2177 2178 ax_skb->len = size; 2179 ax_skb->data = packet; 2180 skb_set_tail_pointer(ax_skb, size); 2181 2182 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2183 rx_cmd_b); 2184 2185 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2186 ax_skb->truesize = size + sizeof(struct sk_buff); 2187 2188 usbnet_skb_return(dev, ax_skb); 2189 } 2190 2191 skb_pull(skb, size); 2192 2193 /* padding bytes before the next frame starts */ 2194 if (skb->len) 2195 skb_pull(skb, align_count); 2196 } 2197 2198 return 1; 2199 } 2200 2201 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2202 struct sk_buff *skb, gfp_t flags) 2203 { 2204 u32 tx_cmd_a, tx_cmd_b; 2205 2206 if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) { 2207 struct sk_buff *skb2 = 2208 skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags); 2209 dev_kfree_skb_any(skb); 2210 skb = skb2; 2211 if (!skb) 2212 return NULL; 2213 } 2214 2215 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2216 2217 if (skb->ip_summed == CHECKSUM_PARTIAL) 2218 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2219 2220 if (skb_is_gso(skb)) { 2221 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2222 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2223 2224 tx_cmd_a |= TX_CMD_A_LSO; 2225 } else { 2226 tx_cmd_b = 0; 2227 } 2228 2229 skb_push(skb, 4); 2230 cpu_to_le32s(&tx_cmd_b); 2231 memcpy(skb->data, &tx_cmd_b, 4); 2232 2233 skb_push(skb, 4); 2234 cpu_to_le32s(&tx_cmd_a); 2235 memcpy(skb->data, &tx_cmd_a, 4); 2236 2237 return skb; 2238 } 2239 2240 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2241 { 2242 dev->intf->needs_remote_wakeup = on; 2243 return 0; 2244 } 2245 2246 static const struct driver_info smsc75xx_info = { 2247 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2248 .bind = smsc75xx_bind, 2249 .unbind = smsc75xx_unbind, 2250 .link_reset = smsc75xx_link_reset, 2251 .reset = smsc75xx_reset, 2252 .rx_fixup = smsc75xx_rx_fixup, 2253 .tx_fixup = smsc75xx_tx_fixup, 2254 .status = smsc75xx_status, 2255 .manage_power = smsc75xx_manage_power, 2256 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2257 }; 2258 2259 static const struct usb_device_id products[] = { 2260 { 2261 /* SMSC7500 USB Gigabit Ethernet Device */ 2262 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2263 .driver_info = (unsigned long) &smsc75xx_info, 2264 }, 2265 { 2266 /* SMSC7500 USB Gigabit Ethernet Device */ 2267 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2268 .driver_info = (unsigned long) &smsc75xx_info, 2269 }, 2270 { }, /* END */ 2271 }; 2272 MODULE_DEVICE_TABLE(usb, products); 2273 2274 static struct usb_driver smsc75xx_driver = { 2275 .name = SMSC_CHIPNAME, 2276 .id_table = products, 2277 .probe = usbnet_probe, 2278 .suspend = smsc75xx_suspend, 2279 .resume = smsc75xx_resume, 2280 .reset_resume = smsc75xx_resume, 2281 .disconnect = usbnet_disconnect, 2282 .disable_hub_initiated_lpm = 1, 2283 .supports_autosuspend = 1, 2284 }; 2285 2286 module_usb_driver(smsc75xx_driver); 2287 2288 MODULE_AUTHOR("Nancy Lin"); 2289 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2290 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2291 MODULE_LICENSE("GPL"); 2292