1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /*************************************************************************** 3 * 4 * Copyright (C) 2007-2010 SMSC 5 * 6 *****************************************************************************/ 7 8 #include <linux/module.h> 9 #include <linux/kmod.h> 10 #include <linux/netdevice.h> 11 #include <linux/etherdevice.h> 12 #include <linux/ethtool.h> 13 #include <linux/mii.h> 14 #include <linux/usb.h> 15 #include <linux/bitrev.h> 16 #include <linux/crc16.h> 17 #include <linux/crc32.h> 18 #include <linux/usb/usbnet.h> 19 #include <linux/slab.h> 20 #include <linux/of_net.h> 21 #include "smsc75xx.h" 22 23 #define SMSC_CHIPNAME "smsc75xx" 24 #define SMSC_DRIVER_VERSION "1.0.0" 25 #define HS_USB_PKT_SIZE (512) 26 #define FS_USB_PKT_SIZE (64) 27 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) 28 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) 29 #define DEFAULT_BULK_IN_DELAY (0x00002000) 30 #define MAX_SINGLE_PACKET_SIZE (9000) 31 #define LAN75XX_EEPROM_MAGIC (0x7500) 32 #define EEPROM_MAC_OFFSET (0x01) 33 #define DEFAULT_TX_CSUM_ENABLE (true) 34 #define DEFAULT_RX_CSUM_ENABLE (true) 35 #define SMSC75XX_INTERNAL_PHY_ID (1) 36 #define SMSC75XX_TX_OVERHEAD (8) 37 #define MAX_RX_FIFO_SIZE (20 * 1024) 38 #define MAX_TX_FIFO_SIZE (12 * 1024) 39 #define USB_VENDOR_ID_SMSC (0x0424) 40 #define USB_PRODUCT_ID_LAN7500 (0x7500) 41 #define USB_PRODUCT_ID_LAN7505 (0x7505) 42 #define RXW_PADDING 2 43 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ 44 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) 45 46 #define SUSPEND_SUSPEND0 (0x01) 47 #define SUSPEND_SUSPEND1 (0x02) 48 #define SUSPEND_SUSPEND2 (0x04) 49 #define SUSPEND_SUSPEND3 (0x08) 50 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ 51 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) 52 53 struct smsc75xx_priv { 54 struct usbnet *dev; 55 u32 rfe_ctl; 56 u32 wolopts; 57 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN]; 58 struct mutex dataport_mutex; 59 spinlock_t rfe_ctl_lock; 60 struct work_struct set_multicast; 61 u8 suspend_flags; 62 }; 63 64 struct usb_context { 65 struct usb_ctrlrequest req; 66 struct usbnet *dev; 67 }; 68 69 static bool turbo_mode = true; 70 module_param(turbo_mode, bool, 0644); 71 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); 72 73 static int smsc75xx_link_ok_nopm(struct usbnet *dev); 74 static int smsc75xx_phy_gig_workaround(struct usbnet *dev); 75 76 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index, 77 u32 *data, int in_pm) 78 { 79 u32 buf; 80 int ret; 81 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); 82 83 BUG_ON(!dev); 84 85 if (!in_pm) 86 fn = usbnet_read_cmd; 87 else 88 fn = usbnet_read_cmd_nopm; 89 90 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN 91 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 92 0, index, &buf, 4); 93 if (unlikely(ret < 0)) { 94 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", 95 index, ret); 96 return ret; 97 } 98 99 le32_to_cpus(&buf); 100 *data = buf; 101 102 return ret; 103 } 104 105 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index, 106 u32 data, int in_pm) 107 { 108 u32 buf; 109 int ret; 110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); 111 112 BUG_ON(!dev); 113 114 if (!in_pm) 115 fn = usbnet_write_cmd; 116 else 117 fn = usbnet_write_cmd_nopm; 118 119 buf = data; 120 cpu_to_le32s(&buf); 121 122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT 123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 124 0, index, &buf, 4); 125 if (unlikely(ret < 0)) 126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", 127 index, ret); 128 129 return ret; 130 } 131 132 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index, 133 u32 *data) 134 { 135 return __smsc75xx_read_reg(dev, index, data, 1); 136 } 137 138 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index, 139 u32 data) 140 { 141 return __smsc75xx_write_reg(dev, index, data, 1); 142 } 143 144 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, 145 u32 *data) 146 { 147 return __smsc75xx_read_reg(dev, index, data, 0); 148 } 149 150 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, 151 u32 data) 152 { 153 return __smsc75xx_write_reg(dev, index, data, 0); 154 } 155 156 /* Loop until the read is completed with timeout 157 * called with phy_mutex held */ 158 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev, 159 int in_pm) 160 { 161 unsigned long start_time = jiffies; 162 u32 val; 163 int ret; 164 165 do { 166 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm); 167 if (ret < 0) { 168 netdev_warn(dev->net, "Error reading MII_ACCESS\n"); 169 return ret; 170 } 171 172 if (!(val & MII_ACCESS_BUSY)) 173 return 0; 174 } while (!time_after(jiffies, start_time + HZ)); 175 176 return -EIO; 177 } 178 179 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx, 180 int in_pm) 181 { 182 struct usbnet *dev = netdev_priv(netdev); 183 u32 val, addr; 184 int ret; 185 186 mutex_lock(&dev->phy_mutex); 187 188 /* confirm MII not busy */ 189 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 190 if (ret < 0) { 191 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n"); 192 goto done; 193 } 194 195 /* set the address, index & direction (read from PHY) */ 196 phy_id &= dev->mii.phy_id_mask; 197 idx &= dev->mii.reg_num_mask; 198 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 199 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 200 | MII_ACCESS_READ | MII_ACCESS_BUSY; 201 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 202 if (ret < 0) { 203 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 204 goto done; 205 } 206 207 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 208 if (ret < 0) { 209 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); 210 goto done; 211 } 212 213 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm); 214 if (ret < 0) { 215 netdev_warn(dev->net, "Error reading MII_DATA\n"); 216 goto done; 217 } 218 219 ret = (u16)(val & 0xFFFF); 220 221 done: 222 mutex_unlock(&dev->phy_mutex); 223 return ret; 224 } 225 226 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id, 227 int idx, int regval, int in_pm) 228 { 229 struct usbnet *dev = netdev_priv(netdev); 230 u32 val, addr; 231 int ret; 232 233 mutex_lock(&dev->phy_mutex); 234 235 /* confirm MII not busy */ 236 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 237 if (ret < 0) { 238 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n"); 239 goto done; 240 } 241 242 val = regval; 243 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm); 244 if (ret < 0) { 245 netdev_warn(dev->net, "Error writing MII_DATA\n"); 246 goto done; 247 } 248 249 /* set the address, index & direction (write to PHY) */ 250 phy_id &= dev->mii.phy_id_mask; 251 idx &= dev->mii.reg_num_mask; 252 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) 253 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) 254 | MII_ACCESS_WRITE | MII_ACCESS_BUSY; 255 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm); 256 if (ret < 0) { 257 netdev_warn(dev->net, "Error writing MII_ACCESS\n"); 258 goto done; 259 } 260 261 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm); 262 if (ret < 0) { 263 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); 264 goto done; 265 } 266 267 done: 268 mutex_unlock(&dev->phy_mutex); 269 } 270 271 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id, 272 int idx) 273 { 274 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1); 275 } 276 277 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id, 278 int idx, int regval) 279 { 280 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1); 281 } 282 283 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) 284 { 285 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0); 286 } 287 288 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, 289 int regval) 290 { 291 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0); 292 } 293 294 static int smsc75xx_wait_eeprom(struct usbnet *dev) 295 { 296 unsigned long start_time = jiffies; 297 u32 val; 298 int ret; 299 300 do { 301 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 302 if (ret < 0) { 303 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 304 return ret; 305 } 306 307 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT)) 308 break; 309 udelay(40); 310 } while (!time_after(jiffies, start_time + HZ)); 311 312 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) { 313 netdev_warn(dev->net, "EEPROM read operation timeout\n"); 314 return -EIO; 315 } 316 317 return 0; 318 } 319 320 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev) 321 { 322 unsigned long start_time = jiffies; 323 u32 val; 324 int ret; 325 326 do { 327 ret = smsc75xx_read_reg(dev, E2P_CMD, &val); 328 if (ret < 0) { 329 netdev_warn(dev->net, "Error reading E2P_CMD\n"); 330 return ret; 331 } 332 333 if (!(val & E2P_CMD_BUSY)) 334 return 0; 335 336 udelay(40); 337 } while (!time_after(jiffies, start_time + HZ)); 338 339 netdev_warn(dev->net, "EEPROM is busy\n"); 340 return -EIO; 341 } 342 343 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, 344 u8 *data) 345 { 346 u32 val; 347 int i, ret; 348 349 BUG_ON(!dev); 350 BUG_ON(!data); 351 352 ret = smsc75xx_eeprom_confirm_not_busy(dev); 353 if (ret) 354 return ret; 355 356 for (i = 0; i < length; i++) { 357 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR); 358 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 359 if (ret < 0) { 360 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 361 return ret; 362 } 363 364 ret = smsc75xx_wait_eeprom(dev); 365 if (ret < 0) 366 return ret; 367 368 ret = smsc75xx_read_reg(dev, E2P_DATA, &val); 369 if (ret < 0) { 370 netdev_warn(dev->net, "Error reading E2P_DATA\n"); 371 return ret; 372 } 373 374 data[i] = val & 0xFF; 375 offset++; 376 } 377 378 return 0; 379 } 380 381 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, 382 u8 *data) 383 { 384 u32 val; 385 int i, ret; 386 387 BUG_ON(!dev); 388 BUG_ON(!data); 389 390 ret = smsc75xx_eeprom_confirm_not_busy(dev); 391 if (ret) 392 return ret; 393 394 /* Issue write/erase enable command */ 395 val = E2P_CMD_BUSY | E2P_CMD_EWEN; 396 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 397 if (ret < 0) { 398 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 399 return ret; 400 } 401 402 ret = smsc75xx_wait_eeprom(dev); 403 if (ret < 0) 404 return ret; 405 406 for (i = 0; i < length; i++) { 407 408 /* Fill data register */ 409 val = data[i]; 410 ret = smsc75xx_write_reg(dev, E2P_DATA, val); 411 if (ret < 0) { 412 netdev_warn(dev->net, "Error writing E2P_DATA\n"); 413 return ret; 414 } 415 416 /* Send "write" command */ 417 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR); 418 ret = smsc75xx_write_reg(dev, E2P_CMD, val); 419 if (ret < 0) { 420 netdev_warn(dev->net, "Error writing E2P_CMD\n"); 421 return ret; 422 } 423 424 ret = smsc75xx_wait_eeprom(dev); 425 if (ret < 0) 426 return ret; 427 428 offset++; 429 } 430 431 return 0; 432 } 433 434 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev) 435 { 436 int i, ret; 437 438 for (i = 0; i < 100; i++) { 439 u32 dp_sel; 440 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 441 if (ret < 0) { 442 netdev_warn(dev->net, "Error reading DP_SEL\n"); 443 return ret; 444 } 445 446 if (dp_sel & DP_SEL_DPRDY) 447 return 0; 448 449 udelay(40); 450 } 451 452 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n"); 453 454 return -EIO; 455 } 456 457 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr, 458 u32 length, u32 *buf) 459 { 460 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 461 u32 dp_sel; 462 int i, ret; 463 464 mutex_lock(&pdata->dataport_mutex); 465 466 ret = smsc75xx_dataport_wait_not_busy(dev); 467 if (ret < 0) { 468 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n"); 469 goto done; 470 } 471 472 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel); 473 if (ret < 0) { 474 netdev_warn(dev->net, "Error reading DP_SEL\n"); 475 goto done; 476 } 477 478 dp_sel &= ~DP_SEL_RSEL; 479 dp_sel |= ram_select; 480 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel); 481 if (ret < 0) { 482 netdev_warn(dev->net, "Error writing DP_SEL\n"); 483 goto done; 484 } 485 486 for (i = 0; i < length; i++) { 487 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i); 488 if (ret < 0) { 489 netdev_warn(dev->net, "Error writing DP_ADDR\n"); 490 goto done; 491 } 492 493 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]); 494 if (ret < 0) { 495 netdev_warn(dev->net, "Error writing DP_DATA\n"); 496 goto done; 497 } 498 499 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE); 500 if (ret < 0) { 501 netdev_warn(dev->net, "Error writing DP_CMD\n"); 502 goto done; 503 } 504 505 ret = smsc75xx_dataport_wait_not_busy(dev); 506 if (ret < 0) { 507 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n"); 508 goto done; 509 } 510 } 511 512 done: 513 mutex_unlock(&pdata->dataport_mutex); 514 return ret; 515 } 516 517 /* returns hash bit number for given MAC address */ 518 static u32 smsc75xx_hash(char addr[ETH_ALEN]) 519 { 520 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 521 } 522 523 static void smsc75xx_deferred_multicast_write(struct work_struct *param) 524 { 525 struct smsc75xx_priv *pdata = 526 container_of(param, struct smsc75xx_priv, set_multicast); 527 struct usbnet *dev = pdata->dev; 528 int ret; 529 530 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 531 pdata->rfe_ctl); 532 533 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN, 534 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table); 535 536 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 537 if (ret < 0) 538 netdev_warn(dev->net, "Error writing RFE_CRL\n"); 539 } 540 541 static void smsc75xx_set_multicast(struct net_device *netdev) 542 { 543 struct usbnet *dev = netdev_priv(netdev); 544 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 545 unsigned long flags; 546 int i; 547 548 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 549 550 pdata->rfe_ctl &= 551 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF); 552 pdata->rfe_ctl |= RFE_CTL_AB; 553 554 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 555 pdata->multicast_hash_table[i] = 0; 556 557 if (dev->net->flags & IFF_PROMISC) { 558 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); 559 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU; 560 } else if (dev->net->flags & IFF_ALLMULTI) { 561 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); 562 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF; 563 } else if (!netdev_mc_empty(dev->net)) { 564 struct netdev_hw_addr *ha; 565 566 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n"); 567 568 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF; 569 570 netdev_for_each_mc_addr(ha, netdev) { 571 u32 bitnum = smsc75xx_hash(ha->addr); 572 pdata->multicast_hash_table[bitnum / 32] |= 573 (1 << (bitnum % 32)); 574 } 575 } else { 576 netif_dbg(dev, drv, dev->net, "receive own packets only\n"); 577 pdata->rfe_ctl |= RFE_CTL_DPF; 578 } 579 580 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 581 582 /* defer register writes to a sleepable context */ 583 schedule_work(&pdata->set_multicast); 584 } 585 586 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex, 587 u16 lcladv, u16 rmtadv) 588 { 589 u32 flow = 0, fct_flow = 0; 590 int ret; 591 592 if (duplex == DUPLEX_FULL) { 593 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 594 595 if (cap & FLOW_CTRL_TX) { 596 flow = (FLOW_TX_FCEN | 0xFFFF); 597 /* set fct_flow thresholds to 20% and 80% */ 598 fct_flow = (8 << 8) | 32; 599 } 600 601 if (cap & FLOW_CTRL_RX) 602 flow |= FLOW_RX_FCEN; 603 604 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", 605 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 606 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 607 } else { 608 netif_dbg(dev, link, dev->net, "half duplex\n"); 609 } 610 611 ret = smsc75xx_write_reg(dev, FLOW, flow); 612 if (ret < 0) { 613 netdev_warn(dev->net, "Error writing FLOW\n"); 614 return ret; 615 } 616 617 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow); 618 if (ret < 0) { 619 netdev_warn(dev->net, "Error writing FCT_FLOW\n"); 620 return ret; 621 } 622 623 return 0; 624 } 625 626 static int smsc75xx_link_reset(struct usbnet *dev) 627 { 628 struct mii_if_info *mii = &dev->mii; 629 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; 630 u16 lcladv, rmtadv; 631 int ret; 632 633 /* write to clear phy interrupt status */ 634 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 635 PHY_INT_SRC_CLEAR_ALL); 636 637 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 638 if (ret < 0) { 639 netdev_warn(dev->net, "Error writing INT_STS\n"); 640 return ret; 641 } 642 643 mii_check_media(mii, 1, 1); 644 mii_ethtool_gset(&dev->mii, &ecmd); 645 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE); 646 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA); 647 648 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n", 649 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv); 650 651 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv); 652 } 653 654 static void smsc75xx_status(struct usbnet *dev, struct urb *urb) 655 { 656 u32 intdata; 657 658 if (urb->actual_length != 4) { 659 netdev_warn(dev->net, "unexpected urb length %d\n", 660 urb->actual_length); 661 return; 662 } 663 664 intdata = get_unaligned_le32(urb->transfer_buffer); 665 666 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); 667 668 if (intdata & INT_ENP_PHY_INT) 669 usbnet_defer_kevent(dev, EVENT_LINK_RESET); 670 else 671 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", 672 intdata); 673 } 674 675 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net) 676 { 677 return MAX_EEPROM_SIZE; 678 } 679 680 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev, 681 struct ethtool_eeprom *ee, u8 *data) 682 { 683 struct usbnet *dev = netdev_priv(netdev); 684 685 ee->magic = LAN75XX_EEPROM_MAGIC; 686 687 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data); 688 } 689 690 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev, 691 struct ethtool_eeprom *ee, u8 *data) 692 { 693 struct usbnet *dev = netdev_priv(netdev); 694 695 if (ee->magic != LAN75XX_EEPROM_MAGIC) { 696 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n", 697 ee->magic); 698 return -EINVAL; 699 } 700 701 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data); 702 } 703 704 static void smsc75xx_ethtool_get_wol(struct net_device *net, 705 struct ethtool_wolinfo *wolinfo) 706 { 707 struct usbnet *dev = netdev_priv(net); 708 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 709 710 wolinfo->supported = SUPPORTED_WAKE; 711 wolinfo->wolopts = pdata->wolopts; 712 } 713 714 static int smsc75xx_ethtool_set_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 int ret; 720 721 if (wolinfo->wolopts & ~SUPPORTED_WAKE) 722 return -EINVAL; 723 724 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; 725 726 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); 727 if (ret < 0) 728 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); 729 730 return ret; 731 } 732 733 static const struct ethtool_ops smsc75xx_ethtool_ops = { 734 .get_link = usbnet_get_link, 735 .nway_reset = usbnet_nway_reset, 736 .get_drvinfo = usbnet_get_drvinfo, 737 .get_msglevel = usbnet_get_msglevel, 738 .set_msglevel = usbnet_set_msglevel, 739 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len, 740 .get_eeprom = smsc75xx_ethtool_get_eeprom, 741 .set_eeprom = smsc75xx_ethtool_set_eeprom, 742 .get_wol = smsc75xx_ethtool_get_wol, 743 .set_wol = smsc75xx_ethtool_set_wol, 744 .get_link_ksettings = usbnet_get_link_ksettings_mii, 745 .set_link_ksettings = usbnet_set_link_ksettings_mii, 746 }; 747 748 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 749 { 750 struct usbnet *dev = netdev_priv(netdev); 751 752 if (!netif_running(netdev)) 753 return -EINVAL; 754 755 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 756 } 757 758 static void smsc75xx_init_mac_address(struct usbnet *dev) 759 { 760 u8 addr[ETH_ALEN]; 761 762 /* maybe the boot loader passed the MAC address in devicetree */ 763 if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) { 764 if (is_valid_ether_addr(dev->net->dev_addr)) { 765 /* device tree values are valid so use them */ 766 netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n"); 767 return; 768 } 769 } 770 771 /* try reading mac address from EEPROM */ 772 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, addr) == 0) { 773 eth_hw_addr_set(dev->net, addr); 774 if (is_valid_ether_addr(dev->net->dev_addr)) { 775 /* eeprom values are valid so use them */ 776 netif_dbg(dev, ifup, dev->net, 777 "MAC address read from EEPROM\n"); 778 return; 779 } 780 } 781 782 /* no useful static MAC address found. generate a random one */ 783 eth_hw_addr_random(dev->net); 784 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); 785 } 786 787 static int smsc75xx_set_mac_address(struct usbnet *dev) 788 { 789 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | 790 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; 791 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; 792 793 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi); 794 if (ret < 0) { 795 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret); 796 return ret; 797 } 798 799 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo); 800 if (ret < 0) { 801 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret); 802 return ret; 803 } 804 805 addr_hi |= ADDR_FILTX_FB_VALID; 806 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi); 807 if (ret < 0) { 808 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret); 809 return ret; 810 } 811 812 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo); 813 if (ret < 0) 814 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret); 815 816 return ret; 817 } 818 819 static int smsc75xx_phy_initialize(struct usbnet *dev) 820 { 821 int bmcr, ret, timeout = 0; 822 823 /* Initialize MII structure */ 824 dev->mii.dev = dev->net; 825 dev->mii.mdio_read = smsc75xx_mdio_read; 826 dev->mii.mdio_write = smsc75xx_mdio_write; 827 dev->mii.phy_id_mask = 0x1f; 828 dev->mii.reg_num_mask = 0x1f; 829 dev->mii.supports_gmii = 1; 830 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; 831 832 /* reset phy and wait for reset to complete */ 833 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); 834 835 do { 836 msleep(10); 837 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); 838 if (bmcr < 0) { 839 netdev_warn(dev->net, "Error reading MII_BMCR\n"); 840 return bmcr; 841 } 842 timeout++; 843 } while ((bmcr & BMCR_RESET) && (timeout < 100)); 844 845 if (timeout >= 100) { 846 netdev_warn(dev->net, "timeout on PHY Reset\n"); 847 return -EIO; 848 } 849 850 /* phy workaround for gig link */ 851 smsc75xx_phy_gig_workaround(dev); 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 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 927 if (ret < 0) { 928 netdev_warn(dev->net, "Failed to set mac rx frame length\n"); 929 return ret; 930 } 931 932 return usbnet_change_mtu(netdev, new_mtu); 933 } 934 935 /* Enable or disable Rx checksum offload engine */ 936 static int smsc75xx_set_features(struct net_device *netdev, 937 netdev_features_t features) 938 { 939 struct usbnet *dev = netdev_priv(netdev); 940 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 941 unsigned long flags; 942 int ret; 943 944 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 945 946 if (features & NETIF_F_RXCSUM) 947 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM; 948 else 949 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM); 950 951 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 952 /* it's racing here! */ 953 954 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 955 if (ret < 0) { 956 netdev_warn(dev->net, "Error writing RFE_CTL\n"); 957 return ret; 958 } 959 return 0; 960 } 961 962 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm) 963 { 964 int timeout = 0; 965 966 do { 967 u32 buf; 968 int ret; 969 970 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm); 971 972 if (ret < 0) { 973 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 974 return ret; 975 } 976 977 if (buf & PMT_CTL_DEV_RDY) 978 return 0; 979 980 msleep(10); 981 timeout++; 982 } while (timeout < 100); 983 984 netdev_warn(dev->net, "timeout waiting for device ready\n"); 985 return -EIO; 986 } 987 988 static int smsc75xx_phy_gig_workaround(struct usbnet *dev) 989 { 990 struct mii_if_info *mii = &dev->mii; 991 int ret = 0, timeout = 0; 992 u32 buf, link_up = 0; 993 994 /* Set the phy in Gig loopback */ 995 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040); 996 997 /* Wait for the link up */ 998 do { 999 link_up = smsc75xx_link_ok_nopm(dev); 1000 usleep_range(10000, 20000); 1001 timeout++; 1002 } while ((!link_up) && (timeout < 1000)); 1003 1004 if (timeout >= 1000) { 1005 netdev_warn(dev->net, "Timeout waiting for PHY link up\n"); 1006 return -EIO; 1007 } 1008 1009 /* phy reset */ 1010 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1011 if (ret < 0) { 1012 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1013 return ret; 1014 } 1015 1016 buf |= PMT_CTL_PHY_RST; 1017 1018 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1019 if (ret < 0) { 1020 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1021 return ret; 1022 } 1023 1024 timeout = 0; 1025 do { 1026 usleep_range(10000, 20000); 1027 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1028 if (ret < 0) { 1029 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", 1030 ret); 1031 return ret; 1032 } 1033 timeout++; 1034 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1035 1036 if (timeout >= 100) { 1037 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1038 return -EIO; 1039 } 1040 1041 return 0; 1042 } 1043 1044 static int smsc75xx_reset(struct usbnet *dev) 1045 { 1046 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1047 u32 buf; 1048 int ret = 0, timeout; 1049 1050 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n"); 1051 1052 ret = smsc75xx_wait_ready(dev, 0); 1053 if (ret < 0) { 1054 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n"); 1055 return ret; 1056 } 1057 1058 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1059 if (ret < 0) { 1060 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1061 return ret; 1062 } 1063 1064 buf |= HW_CFG_LRST; 1065 1066 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1067 if (ret < 0) { 1068 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1069 return ret; 1070 } 1071 1072 timeout = 0; 1073 do { 1074 msleep(10); 1075 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1076 if (ret < 0) { 1077 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1078 return ret; 1079 } 1080 timeout++; 1081 } while ((buf & HW_CFG_LRST) && (timeout < 100)); 1082 1083 if (timeout >= 100) { 1084 netdev_warn(dev->net, "timeout on completion of Lite Reset\n"); 1085 return -EIO; 1086 } 1087 1088 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n"); 1089 1090 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1091 if (ret < 0) { 1092 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1093 return ret; 1094 } 1095 1096 buf |= PMT_CTL_PHY_RST; 1097 1098 ret = smsc75xx_write_reg(dev, PMT_CTL, buf); 1099 if (ret < 0) { 1100 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret); 1101 return ret; 1102 } 1103 1104 timeout = 0; 1105 do { 1106 msleep(10); 1107 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf); 1108 if (ret < 0) { 1109 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret); 1110 return ret; 1111 } 1112 timeout++; 1113 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100)); 1114 1115 if (timeout >= 100) { 1116 netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); 1117 return -EIO; 1118 } 1119 1120 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n"); 1121 1122 ret = smsc75xx_set_mac_address(dev); 1123 if (ret < 0) { 1124 netdev_warn(dev->net, "Failed to set mac address\n"); 1125 return ret; 1126 } 1127 1128 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", 1129 dev->net->dev_addr); 1130 1131 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1132 if (ret < 0) { 1133 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1134 return ret; 1135 } 1136 1137 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", 1138 buf); 1139 1140 buf |= HW_CFG_BIR; 1141 1142 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1143 if (ret < 0) { 1144 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1145 return ret; 1146 } 1147 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, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n", 1155 buf); 1156 1157 if (!turbo_mode) { 1158 buf = 0; 1159 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; 1160 } else if (dev->udev->speed == USB_SPEED_HIGH) { 1161 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 1162 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; 1163 } else { 1164 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 1165 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; 1166 } 1167 1168 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", 1169 (ulong)dev->rx_urb_size); 1170 1171 ret = smsc75xx_write_reg(dev, BURST_CAP, buf); 1172 if (ret < 0) { 1173 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret); 1174 return ret; 1175 } 1176 1177 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf); 1178 if (ret < 0) { 1179 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret); 1180 return ret; 1181 } 1182 1183 netif_dbg(dev, ifup, dev->net, 1184 "Read Value from BURST_CAP after writing: 0x%08x\n", buf); 1185 1186 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 1187 if (ret < 0) { 1188 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret); 1189 return ret; 1190 } 1191 1192 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf); 1193 if (ret < 0) { 1194 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret); 1195 return ret; 1196 } 1197 1198 netif_dbg(dev, ifup, dev->net, 1199 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf); 1200 1201 if (turbo_mode) { 1202 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1203 if (ret < 0) { 1204 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1205 return ret; 1206 } 1207 1208 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1209 1210 buf |= (HW_CFG_MEF | HW_CFG_BCE); 1211 1212 ret = smsc75xx_write_reg(dev, HW_CFG, buf); 1213 if (ret < 0) { 1214 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret); 1215 return ret; 1216 } 1217 1218 ret = smsc75xx_read_reg(dev, HW_CFG, &buf); 1219 if (ret < 0) { 1220 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret); 1221 return ret; 1222 } 1223 1224 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf); 1225 } 1226 1227 /* set FIFO sizes */ 1228 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 1229 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf); 1230 if (ret < 0) { 1231 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret); 1232 return ret; 1233 } 1234 1235 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf); 1236 1237 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 1238 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf); 1239 if (ret < 0) { 1240 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret); 1241 return ret; 1242 } 1243 1244 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf); 1245 1246 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); 1247 if (ret < 0) { 1248 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret); 1249 return ret; 1250 } 1251 1252 ret = smsc75xx_read_reg(dev, ID_REV, &buf); 1253 if (ret < 0) { 1254 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret); 1255 return ret; 1256 } 1257 1258 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf); 1259 1260 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf); 1261 if (ret < 0) { 1262 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret); 1263 return ret; 1264 } 1265 1266 /* only set default GPIO/LED settings if no EEPROM is detected */ 1267 if (!(buf & E2P_CMD_LOADED)) { 1268 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf); 1269 if (ret < 0) { 1270 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret); 1271 return ret; 1272 } 1273 1274 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL); 1275 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL; 1276 1277 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf); 1278 if (ret < 0) { 1279 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret); 1280 return ret; 1281 } 1282 } 1283 1284 ret = smsc75xx_write_reg(dev, FLOW, 0); 1285 if (ret < 0) { 1286 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret); 1287 return ret; 1288 } 1289 1290 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0); 1291 if (ret < 0) { 1292 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret); 1293 return ret; 1294 } 1295 1296 /* Don't need rfe_ctl_lock during initialisation */ 1297 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1298 if (ret < 0) { 1299 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1300 return ret; 1301 } 1302 1303 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF; 1304 1305 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1306 if (ret < 0) { 1307 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret); 1308 return ret; 1309 } 1310 1311 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 1312 if (ret < 0) { 1313 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret); 1314 return ret; 1315 } 1316 1317 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n", 1318 pdata->rfe_ctl); 1319 1320 /* Enable or disable checksum offload engines */ 1321 smsc75xx_set_features(dev->net, dev->net->features); 1322 1323 smsc75xx_set_multicast(dev->net); 1324 1325 ret = smsc75xx_phy_initialize(dev); 1326 if (ret < 0) { 1327 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret); 1328 return ret; 1329 } 1330 1331 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf); 1332 if (ret < 0) { 1333 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret); 1334 return ret; 1335 } 1336 1337 /* enable PHY interrupts */ 1338 buf |= INT_ENP_PHY_INT; 1339 1340 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); 1341 if (ret < 0) { 1342 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret); 1343 return ret; 1344 } 1345 1346 /* allow mac to detect speed and duplex from phy */ 1347 ret = smsc75xx_read_reg(dev, MAC_CR, &buf); 1348 if (ret < 0) { 1349 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret); 1350 return ret; 1351 } 1352 1353 buf |= (MAC_CR_ADD | MAC_CR_ASD); 1354 ret = smsc75xx_write_reg(dev, MAC_CR, buf); 1355 if (ret < 0) { 1356 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret); 1357 return ret; 1358 } 1359 1360 ret = smsc75xx_read_reg(dev, MAC_TX, &buf); 1361 if (ret < 0) { 1362 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret); 1363 return ret; 1364 } 1365 1366 buf |= MAC_TX_TXEN; 1367 1368 ret = smsc75xx_write_reg(dev, MAC_TX, buf); 1369 if (ret < 0) { 1370 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret); 1371 return ret; 1372 } 1373 1374 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf); 1375 1376 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf); 1377 if (ret < 0) { 1378 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret); 1379 return ret; 1380 } 1381 1382 buf |= FCT_TX_CTL_EN; 1383 1384 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf); 1385 if (ret < 0) { 1386 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret); 1387 return ret; 1388 } 1389 1390 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); 1391 1392 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 1393 if (ret < 0) { 1394 netdev_warn(dev->net, "Failed to set max rx frame length\n"); 1395 return ret; 1396 } 1397 1398 ret = smsc75xx_read_reg(dev, MAC_RX, &buf); 1399 if (ret < 0) { 1400 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 1401 return ret; 1402 } 1403 1404 buf |= MAC_RX_RXEN; 1405 1406 ret = smsc75xx_write_reg(dev, MAC_RX, buf); 1407 if (ret < 0) { 1408 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 1409 return ret; 1410 } 1411 1412 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf); 1413 1414 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf); 1415 if (ret < 0) { 1416 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret); 1417 return ret; 1418 } 1419 1420 buf |= FCT_RX_CTL_EN; 1421 1422 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf); 1423 if (ret < 0) { 1424 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret); 1425 return ret; 1426 } 1427 1428 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf); 1429 1430 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n"); 1431 return 0; 1432 } 1433 1434 static const struct net_device_ops smsc75xx_netdev_ops = { 1435 .ndo_open = usbnet_open, 1436 .ndo_stop = usbnet_stop, 1437 .ndo_start_xmit = usbnet_start_xmit, 1438 .ndo_tx_timeout = usbnet_tx_timeout, 1439 .ndo_get_stats64 = dev_get_tstats64, 1440 .ndo_change_mtu = smsc75xx_change_mtu, 1441 .ndo_set_mac_address = eth_mac_addr, 1442 .ndo_validate_addr = eth_validate_addr, 1443 .ndo_eth_ioctl = smsc75xx_ioctl, 1444 .ndo_set_rx_mode = smsc75xx_set_multicast, 1445 .ndo_set_features = smsc75xx_set_features, 1446 }; 1447 1448 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) 1449 { 1450 struct smsc75xx_priv *pdata = NULL; 1451 int ret; 1452 1453 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); 1454 1455 ret = usbnet_get_endpoints(dev, intf); 1456 if (ret < 0) { 1457 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); 1458 return ret; 1459 } 1460 1461 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv), 1462 GFP_KERNEL); 1463 1464 pdata = (struct smsc75xx_priv *)(dev->data[0]); 1465 if (!pdata) 1466 return -ENOMEM; 1467 1468 pdata->dev = dev; 1469 1470 spin_lock_init(&pdata->rfe_ctl_lock); 1471 mutex_init(&pdata->dataport_mutex); 1472 1473 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write); 1474 1475 if (DEFAULT_TX_CSUM_ENABLE) 1476 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1477 1478 if (DEFAULT_RX_CSUM_ENABLE) 1479 dev->net->features |= NETIF_F_RXCSUM; 1480 1481 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 1482 NETIF_F_RXCSUM; 1483 1484 ret = smsc75xx_wait_ready(dev, 0); 1485 if (ret < 0) { 1486 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n"); 1487 goto free_pdata; 1488 } 1489 1490 smsc75xx_init_mac_address(dev); 1491 1492 /* Init all registers */ 1493 ret = smsc75xx_reset(dev); 1494 if (ret < 0) { 1495 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret); 1496 goto cancel_work; 1497 } 1498 1499 dev->net->netdev_ops = &smsc75xx_netdev_ops; 1500 dev->net->ethtool_ops = &smsc75xx_ethtool_ops; 1501 dev->net->flags |= IFF_MULTICAST; 1502 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; 1503 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 1504 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE; 1505 return 0; 1506 1507 cancel_work: 1508 cancel_work_sync(&pdata->set_multicast); 1509 free_pdata: 1510 kfree(pdata); 1511 dev->data[0] = 0; 1512 return ret; 1513 } 1514 1515 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf) 1516 { 1517 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1518 if (pdata) { 1519 cancel_work_sync(&pdata->set_multicast); 1520 netif_dbg(dev, ifdown, dev->net, "free pdata\n"); 1521 kfree(pdata); 1522 dev->data[0] = 0; 1523 } 1524 } 1525 1526 static u16 smsc_crc(const u8 *buffer, size_t len) 1527 { 1528 return bitrev16(crc16(0xFFFF, buffer, len)); 1529 } 1530 1531 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg, 1532 u32 wuf_mask1) 1533 { 1534 int cfg_base = WUF_CFGX + filter * 4; 1535 int mask_base = WUF_MASKX + filter * 16; 1536 int ret; 1537 1538 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg); 1539 if (ret < 0) { 1540 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1541 return ret; 1542 } 1543 1544 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1); 1545 if (ret < 0) { 1546 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1547 return ret; 1548 } 1549 1550 ret = smsc75xx_write_reg(dev, mask_base + 4, 0); 1551 if (ret < 0) { 1552 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1553 return ret; 1554 } 1555 1556 ret = smsc75xx_write_reg(dev, mask_base + 8, 0); 1557 if (ret < 0) { 1558 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1559 return ret; 1560 } 1561 1562 ret = smsc75xx_write_reg(dev, mask_base + 12, 0); 1563 if (ret < 0) { 1564 netdev_warn(dev->net, "Error writing WUF_MASKX\n"); 1565 return ret; 1566 } 1567 1568 return 0; 1569 } 1570 1571 static int smsc75xx_enter_suspend0(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_PHY_RST)); 1584 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS; 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_SUSPEND0; 1593 1594 return 0; 1595 } 1596 1597 static int smsc75xx_enter_suspend1(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, PMT_CTL, &val); 1604 if (ret < 0) { 1605 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1606 return ret; 1607 } 1608 1609 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1610 val |= PMT_CTL_SUS_MODE_1; 1611 1612 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1613 if (ret < 0) { 1614 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1615 return ret; 1616 } 1617 1618 /* clear wol status, enable energy detection */ 1619 val &= ~PMT_CTL_WUPS; 1620 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_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 pdata->suspend_flags |= SUSPEND_SUSPEND1; 1629 1630 return 0; 1631 } 1632 1633 static int smsc75xx_enter_suspend2(struct usbnet *dev) 1634 { 1635 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1636 u32 val; 1637 int ret; 1638 1639 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1640 if (ret < 0) { 1641 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1642 return ret; 1643 } 1644 1645 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1646 val |= PMT_CTL_SUS_MODE_2; 1647 1648 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1649 if (ret < 0) { 1650 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1651 return ret; 1652 } 1653 1654 pdata->suspend_flags |= SUSPEND_SUSPEND2; 1655 1656 return 0; 1657 } 1658 1659 static int smsc75xx_enter_suspend3(struct usbnet *dev) 1660 { 1661 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1662 u32 val; 1663 int ret; 1664 1665 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val); 1666 if (ret < 0) { 1667 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n"); 1668 return ret; 1669 } 1670 1671 if (val & FCT_RX_CTL_RXUSED) { 1672 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n"); 1673 return -EBUSY; 1674 } 1675 1676 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1677 if (ret < 0) { 1678 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1679 return ret; 1680 } 1681 1682 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST); 1683 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN; 1684 1685 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1686 if (ret < 0) { 1687 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1688 return ret; 1689 } 1690 1691 /* clear wol status */ 1692 val &= ~PMT_CTL_WUPS; 1693 val |= PMT_CTL_WUPS_WOL; 1694 1695 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1696 if (ret < 0) { 1697 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1698 return ret; 1699 } 1700 1701 pdata->suspend_flags |= SUSPEND_SUSPEND3; 1702 1703 return 0; 1704 } 1705 1706 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) 1707 { 1708 struct mii_if_info *mii = &dev->mii; 1709 int ret; 1710 1711 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); 1712 1713 /* read to clear */ 1714 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC); 1715 if (ret < 0) { 1716 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n"); 1717 return ret; 1718 } 1719 1720 /* enable interrupt source */ 1721 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK); 1722 if (ret < 0) { 1723 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n"); 1724 return ret; 1725 } 1726 1727 ret |= mask; 1728 1729 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret); 1730 1731 return 0; 1732 } 1733 1734 static int smsc75xx_link_ok_nopm(struct usbnet *dev) 1735 { 1736 struct mii_if_info *mii = &dev->mii; 1737 int ret; 1738 1739 /* first, a dummy read, needed to latch some MII phys */ 1740 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1741 if (ret < 0) { 1742 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1743 return ret; 1744 } 1745 1746 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR); 1747 if (ret < 0) { 1748 netdev_warn(dev->net, "Error reading MII_BMSR\n"); 1749 return ret; 1750 } 1751 1752 return !!(ret & BMSR_LSTATUS); 1753 } 1754 1755 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up) 1756 { 1757 int ret; 1758 1759 if (!netif_running(dev->net)) { 1760 /* interface is ifconfig down so fully power down hw */ 1761 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); 1762 return smsc75xx_enter_suspend2(dev); 1763 } 1764 1765 if (!link_up) { 1766 /* link is down so enter EDPD mode */ 1767 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); 1768 1769 /* enable PHY wakeup events for if cable is attached */ 1770 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1771 PHY_INT_MASK_ANEG_COMP); 1772 if (ret < 0) { 1773 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1774 return ret; 1775 } 1776 1777 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1778 return smsc75xx_enter_suspend1(dev); 1779 } 1780 1781 /* enable PHY wakeup events so we remote wakeup if cable is pulled */ 1782 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1783 PHY_INT_MASK_LINK_DOWN); 1784 if (ret < 0) { 1785 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1786 return ret; 1787 } 1788 1789 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); 1790 return smsc75xx_enter_suspend3(dev); 1791 } 1792 1793 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message) 1794 { 1795 struct usbnet *dev = usb_get_intfdata(intf); 1796 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 1797 u32 val, link_up; 1798 int ret; 1799 1800 ret = usbnet_suspend(intf, message); 1801 if (ret < 0) { 1802 netdev_warn(dev->net, "usbnet_suspend error\n"); 1803 return ret; 1804 } 1805 1806 if (pdata->suspend_flags) { 1807 netdev_warn(dev->net, "error during last resume\n"); 1808 pdata->suspend_flags = 0; 1809 } 1810 1811 /* determine if link is up using only _nopm functions */ 1812 link_up = smsc75xx_link_ok_nopm(dev); 1813 1814 if (message.event == PM_EVENT_AUTO_SUSPEND) { 1815 ret = smsc75xx_autosuspend(dev, link_up); 1816 goto done; 1817 } 1818 1819 /* if we get this far we're not autosuspending */ 1820 /* if no wol options set, or if link is down and we're not waking on 1821 * PHY activity, enter lowest power SUSPEND2 mode 1822 */ 1823 if (!(pdata->wolopts & SUPPORTED_WAKE) || 1824 !(link_up || (pdata->wolopts & WAKE_PHY))) { 1825 netdev_info(dev->net, "entering SUSPEND2 mode\n"); 1826 1827 /* disable energy detect (link up) & wake up events */ 1828 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1829 if (ret < 0) { 1830 netdev_warn(dev->net, "Error reading WUCSR\n"); 1831 goto done; 1832 } 1833 1834 val &= ~(WUCSR_MPEN | WUCSR_WUEN); 1835 1836 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1837 if (ret < 0) { 1838 netdev_warn(dev->net, "Error writing WUCSR\n"); 1839 goto done; 1840 } 1841 1842 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1843 if (ret < 0) { 1844 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1845 goto done; 1846 } 1847 1848 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN); 1849 1850 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 1851 if (ret < 0) { 1852 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 1853 goto done; 1854 } 1855 1856 ret = smsc75xx_enter_suspend2(dev); 1857 goto done; 1858 } 1859 1860 if (pdata->wolopts & WAKE_PHY) { 1861 ret = smsc75xx_enable_phy_wakeup_interrupts(dev, 1862 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN)); 1863 if (ret < 0) { 1864 netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); 1865 goto done; 1866 } 1867 1868 /* if link is down then configure EDPD and enter SUSPEND1, 1869 * otherwise enter SUSPEND0 below 1870 */ 1871 if (!link_up) { 1872 struct mii_if_info *mii = &dev->mii; 1873 netdev_info(dev->net, "entering SUSPEND1 mode\n"); 1874 1875 /* enable energy detect power-down mode */ 1876 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, 1877 PHY_MODE_CTRL_STS); 1878 if (ret < 0) { 1879 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n"); 1880 goto done; 1881 } 1882 1883 ret |= MODE_CTRL_STS_EDPWRDOWN; 1884 1885 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, 1886 PHY_MODE_CTRL_STS, ret); 1887 1888 /* enter SUSPEND1 mode */ 1889 ret = smsc75xx_enter_suspend1(dev); 1890 goto done; 1891 } 1892 } 1893 1894 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) { 1895 int i, filter = 0; 1896 1897 /* disable all filters */ 1898 for (i = 0; i < WUF_NUM; i++) { 1899 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0); 1900 if (ret < 0) { 1901 netdev_warn(dev->net, "Error writing WUF_CFGX\n"); 1902 goto done; 1903 } 1904 } 1905 1906 if (pdata->wolopts & WAKE_MCAST) { 1907 const u8 mcast[] = {0x01, 0x00, 0x5E}; 1908 netdev_info(dev->net, "enabling multicast detection\n"); 1909 1910 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST 1911 | smsc_crc(mcast, 3); 1912 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007); 1913 if (ret < 0) { 1914 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1915 goto done; 1916 } 1917 } 1918 1919 if (pdata->wolopts & WAKE_ARP) { 1920 const u8 arp[] = {0x08, 0x06}; 1921 netdev_info(dev->net, "enabling ARP detection\n"); 1922 1923 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16) 1924 | smsc_crc(arp, 2); 1925 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003); 1926 if (ret < 0) { 1927 netdev_warn(dev->net, "Error writing wakeup filter\n"); 1928 goto done; 1929 } 1930 } 1931 1932 /* clear any pending pattern match packet status */ 1933 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1934 if (ret < 0) { 1935 netdev_warn(dev->net, "Error reading WUCSR\n"); 1936 goto done; 1937 } 1938 1939 val |= WUCSR_WUFR; 1940 1941 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1942 if (ret < 0) { 1943 netdev_warn(dev->net, "Error writing WUCSR\n"); 1944 goto done; 1945 } 1946 1947 netdev_info(dev->net, "enabling packet match detection\n"); 1948 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1949 if (ret < 0) { 1950 netdev_warn(dev->net, "Error reading WUCSR\n"); 1951 goto done; 1952 } 1953 1954 val |= WUCSR_WUEN; 1955 1956 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1957 if (ret < 0) { 1958 netdev_warn(dev->net, "Error writing WUCSR\n"); 1959 goto done; 1960 } 1961 } else { 1962 netdev_info(dev->net, "disabling packet match detection\n"); 1963 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1964 if (ret < 0) { 1965 netdev_warn(dev->net, "Error reading WUCSR\n"); 1966 goto done; 1967 } 1968 1969 val &= ~WUCSR_WUEN; 1970 1971 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1972 if (ret < 0) { 1973 netdev_warn(dev->net, "Error writing WUCSR\n"); 1974 goto done; 1975 } 1976 } 1977 1978 /* disable magic, bcast & unicast wakeup sources */ 1979 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 1980 if (ret < 0) { 1981 netdev_warn(dev->net, "Error reading WUCSR\n"); 1982 goto done; 1983 } 1984 1985 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN); 1986 1987 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 1988 if (ret < 0) { 1989 netdev_warn(dev->net, "Error writing WUCSR\n"); 1990 goto done; 1991 } 1992 1993 if (pdata->wolopts & WAKE_PHY) { 1994 netdev_info(dev->net, "enabling PHY wakeup\n"); 1995 1996 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 1997 if (ret < 0) { 1998 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 1999 goto done; 2000 } 2001 2002 /* clear wol status, enable energy detection */ 2003 val &= ~PMT_CTL_WUPS; 2004 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN); 2005 2006 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2007 if (ret < 0) { 2008 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2009 goto done; 2010 } 2011 } 2012 2013 if (pdata->wolopts & WAKE_MAGIC) { 2014 netdev_info(dev->net, "enabling magic packet wakeup\n"); 2015 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2016 if (ret < 0) { 2017 netdev_warn(dev->net, "Error reading WUCSR\n"); 2018 goto done; 2019 } 2020 2021 /* clear any pending magic packet status */ 2022 val |= WUCSR_MPR | WUCSR_MPEN; 2023 2024 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2025 if (ret < 0) { 2026 netdev_warn(dev->net, "Error writing WUCSR\n"); 2027 goto done; 2028 } 2029 } 2030 2031 if (pdata->wolopts & WAKE_BCAST) { 2032 netdev_info(dev->net, "enabling broadcast detection\n"); 2033 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2034 if (ret < 0) { 2035 netdev_warn(dev->net, "Error reading WUCSR\n"); 2036 goto done; 2037 } 2038 2039 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN; 2040 2041 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2042 if (ret < 0) { 2043 netdev_warn(dev->net, "Error writing WUCSR\n"); 2044 goto done; 2045 } 2046 } 2047 2048 if (pdata->wolopts & WAKE_UCAST) { 2049 netdev_info(dev->net, "enabling unicast detection\n"); 2050 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2051 if (ret < 0) { 2052 netdev_warn(dev->net, "Error reading WUCSR\n"); 2053 goto done; 2054 } 2055 2056 val |= WUCSR_WUFR | WUCSR_PFDA_EN; 2057 2058 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2059 if (ret < 0) { 2060 netdev_warn(dev->net, "Error writing WUCSR\n"); 2061 goto done; 2062 } 2063 } 2064 2065 /* enable receiver to enable frame reception */ 2066 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val); 2067 if (ret < 0) { 2068 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret); 2069 goto done; 2070 } 2071 2072 val |= MAC_RX_RXEN; 2073 2074 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val); 2075 if (ret < 0) { 2076 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret); 2077 goto done; 2078 } 2079 2080 /* some wol options are enabled, so enter SUSPEND0 */ 2081 netdev_info(dev->net, "entering SUSPEND0 mode\n"); 2082 ret = smsc75xx_enter_suspend0(dev); 2083 2084 done: 2085 /* 2086 * TODO: resume() might need to handle the suspend failure 2087 * in system sleep 2088 */ 2089 if (ret && PMSG_IS_AUTO(message)) 2090 usbnet_resume(intf); 2091 return ret; 2092 } 2093 2094 static int smsc75xx_resume(struct usb_interface *intf) 2095 { 2096 struct usbnet *dev = usb_get_intfdata(intf); 2097 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]); 2098 u8 suspend_flags = pdata->suspend_flags; 2099 int ret; 2100 u32 val; 2101 2102 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); 2103 2104 /* do this first to ensure it's cleared even in error case */ 2105 pdata->suspend_flags = 0; 2106 2107 if (suspend_flags & SUSPEND_ALLMODES) { 2108 /* Disable wakeup sources */ 2109 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val); 2110 if (ret < 0) { 2111 netdev_warn(dev->net, "Error reading WUCSR\n"); 2112 return ret; 2113 } 2114 2115 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN 2116 | WUCSR_BCST_EN); 2117 2118 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val); 2119 if (ret < 0) { 2120 netdev_warn(dev->net, "Error writing WUCSR\n"); 2121 return ret; 2122 } 2123 2124 /* clear wake-up status */ 2125 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2126 if (ret < 0) { 2127 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2128 return ret; 2129 } 2130 2131 val &= ~PMT_CTL_WOL_EN; 2132 val |= PMT_CTL_WUPS; 2133 2134 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2135 if (ret < 0) { 2136 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2137 return ret; 2138 } 2139 } 2140 2141 if (suspend_flags & SUSPEND_SUSPEND2) { 2142 netdev_info(dev->net, "resuming from SUSPEND2\n"); 2143 2144 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val); 2145 if (ret < 0) { 2146 netdev_warn(dev->net, "Error reading PMT_CTL\n"); 2147 return ret; 2148 } 2149 2150 val |= PMT_CTL_PHY_PWRUP; 2151 2152 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val); 2153 if (ret < 0) { 2154 netdev_warn(dev->net, "Error writing PMT_CTL\n"); 2155 return ret; 2156 } 2157 } 2158 2159 ret = smsc75xx_wait_ready(dev, 1); 2160 if (ret < 0) { 2161 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n"); 2162 return ret; 2163 } 2164 2165 return usbnet_resume(intf); 2166 } 2167 2168 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb, 2169 u32 rx_cmd_a, u32 rx_cmd_b) 2170 { 2171 if (!(dev->net->features & NETIF_F_RXCSUM) || 2172 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) { 2173 skb->ip_summed = CHECKSUM_NONE; 2174 } else { 2175 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT)); 2176 skb->ip_summed = CHECKSUM_COMPLETE; 2177 } 2178 } 2179 2180 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 2181 { 2182 /* This check is no longer done by usbnet */ 2183 if (skb->len < dev->net->hard_header_len) 2184 return 0; 2185 2186 while (skb->len > 0) { 2187 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2188 struct sk_buff *ax_skb; 2189 unsigned char *packet; 2190 2191 rx_cmd_a = get_unaligned_le32(skb->data); 2192 skb_pull(skb, 4); 2193 2194 rx_cmd_b = get_unaligned_le32(skb->data); 2195 skb_pull(skb, 4 + RXW_PADDING); 2196 2197 packet = skb->data; 2198 2199 /* get the packet length */ 2200 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING; 2201 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2202 2203 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) { 2204 netif_dbg(dev, rx_err, dev->net, 2205 "Error rx_cmd_a=0x%08x\n", rx_cmd_a); 2206 dev->net->stats.rx_errors++; 2207 dev->net->stats.rx_dropped++; 2208 2209 if (rx_cmd_a & RX_CMD_A_FCS) 2210 dev->net->stats.rx_crc_errors++; 2211 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) 2212 dev->net->stats.rx_frame_errors++; 2213 } else { 2214 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ 2215 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { 2216 netif_dbg(dev, rx_err, dev->net, 2217 "size err rx_cmd_a=0x%08x\n", 2218 rx_cmd_a); 2219 return 0; 2220 } 2221 2222 /* last frame in this batch */ 2223 if (skb->len == size) { 2224 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a, 2225 rx_cmd_b); 2226 2227 skb_trim(skb, skb->len - 4); /* remove fcs */ 2228 skb->truesize = size + sizeof(struct sk_buff); 2229 2230 return 1; 2231 } 2232 2233 ax_skb = skb_clone(skb, GFP_ATOMIC); 2234 if (unlikely(!ax_skb)) { 2235 netdev_warn(dev->net, "Error allocating skb\n"); 2236 return 0; 2237 } 2238 2239 ax_skb->len = size; 2240 ax_skb->data = packet; 2241 skb_set_tail_pointer(ax_skb, size); 2242 2243 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a, 2244 rx_cmd_b); 2245 2246 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ 2247 ax_skb->truesize = size + sizeof(struct sk_buff); 2248 2249 usbnet_skb_return(dev, ax_skb); 2250 } 2251 2252 skb_pull(skb, size); 2253 2254 /* padding bytes before the next frame starts */ 2255 if (skb->len) 2256 skb_pull(skb, align_count); 2257 } 2258 2259 return 1; 2260 } 2261 2262 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev, 2263 struct sk_buff *skb, gfp_t flags) 2264 { 2265 u32 tx_cmd_a, tx_cmd_b; 2266 void *ptr; 2267 2268 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) { 2269 dev_kfree_skb_any(skb); 2270 return NULL; 2271 } 2272 2273 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS; 2274 2275 if (skb->ip_summed == CHECKSUM_PARTIAL) 2276 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE; 2277 2278 if (skb_is_gso(skb)) { 2279 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN); 2280 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS; 2281 2282 tx_cmd_a |= TX_CMD_A_LSO; 2283 } else { 2284 tx_cmd_b = 0; 2285 } 2286 2287 ptr = skb_push(skb, 8); 2288 put_unaligned_le32(tx_cmd_a, ptr); 2289 put_unaligned_le32(tx_cmd_b, ptr + 4); 2290 2291 return skb; 2292 } 2293 2294 static int smsc75xx_manage_power(struct usbnet *dev, int on) 2295 { 2296 dev->intf->needs_remote_wakeup = on; 2297 return 0; 2298 } 2299 2300 static const struct driver_info smsc75xx_info = { 2301 .description = "smsc75xx USB 2.0 Gigabit Ethernet", 2302 .bind = smsc75xx_bind, 2303 .unbind = smsc75xx_unbind, 2304 .link_reset = smsc75xx_link_reset, 2305 .reset = smsc75xx_reset, 2306 .rx_fixup = smsc75xx_rx_fixup, 2307 .tx_fixup = smsc75xx_tx_fixup, 2308 .status = smsc75xx_status, 2309 .manage_power = smsc75xx_manage_power, 2310 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, 2311 }; 2312 2313 static const struct usb_device_id products[] = { 2314 { 2315 /* SMSC7500 USB Gigabit Ethernet Device */ 2316 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500), 2317 .driver_info = (unsigned long) &smsc75xx_info, 2318 }, 2319 { 2320 /* SMSC7500 USB Gigabit Ethernet Device */ 2321 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505), 2322 .driver_info = (unsigned long) &smsc75xx_info, 2323 }, 2324 { }, /* END */ 2325 }; 2326 MODULE_DEVICE_TABLE(usb, products); 2327 2328 static struct usb_driver smsc75xx_driver = { 2329 .name = SMSC_CHIPNAME, 2330 .id_table = products, 2331 .probe = usbnet_probe, 2332 .suspend = smsc75xx_suspend, 2333 .resume = smsc75xx_resume, 2334 .reset_resume = smsc75xx_resume, 2335 .disconnect = usbnet_disconnect, 2336 .disable_hub_initiated_lpm = 1, 2337 .supports_autosuspend = 1, 2338 }; 2339 2340 module_usb_driver(smsc75xx_driver); 2341 2342 MODULE_AUTHOR("Nancy Lin"); 2343 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); 2344 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices"); 2345 MODULE_LICENSE("GPL"); 2346