1 /* 2 * Copyright (C) 2015 Microchip Technology 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 16 */ 17 #include <linux/version.h> 18 #include <linux/module.h> 19 #include <linux/netdevice.h> 20 #include <linux/etherdevice.h> 21 #include <linux/ethtool.h> 22 #include <linux/usb.h> 23 #include <linux/crc32.h> 24 #include <linux/signal.h> 25 #include <linux/slab.h> 26 #include <linux/if_vlan.h> 27 #include <linux/uaccess.h> 28 #include <linux/list.h> 29 #include <linux/ip.h> 30 #include <linux/ipv6.h> 31 #include <linux/mdio.h> 32 #include <linux/phy.h> 33 #include <net/ip6_checksum.h> 34 #include <linux/interrupt.h> 35 #include <linux/irqdomain.h> 36 #include <linux/irq.h> 37 #include <linux/irqchip/chained_irq.h> 38 #include <linux/microchipphy.h> 39 #include <linux/phy.h> 40 #include "lan78xx.h" 41 42 #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>" 43 #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" 44 #define DRIVER_NAME "lan78xx" 45 #define DRIVER_VERSION "1.0.6" 46 47 #define TX_TIMEOUT_JIFFIES (5 * HZ) 48 #define THROTTLE_JIFFIES (HZ / 8) 49 #define UNLINK_TIMEOUT_MS 3 50 51 #define RX_MAX_QUEUE_MEMORY (60 * 1518) 52 53 #define SS_USB_PKT_SIZE (1024) 54 #define HS_USB_PKT_SIZE (512) 55 #define FS_USB_PKT_SIZE (64) 56 57 #define MAX_RX_FIFO_SIZE (12 * 1024) 58 #define MAX_TX_FIFO_SIZE (12 * 1024) 59 #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) 60 #define DEFAULT_BULK_IN_DELAY (0x0800) 61 #define MAX_SINGLE_PACKET_SIZE (9000) 62 #define DEFAULT_TX_CSUM_ENABLE (true) 63 #define DEFAULT_RX_CSUM_ENABLE (true) 64 #define DEFAULT_TSO_CSUM_ENABLE (true) 65 #define DEFAULT_VLAN_FILTER_ENABLE (true) 66 #define TX_OVERHEAD (8) 67 #define RXW_PADDING 2 68 69 #define LAN78XX_USB_VENDOR_ID (0x0424) 70 #define LAN7800_USB_PRODUCT_ID (0x7800) 71 #define LAN7850_USB_PRODUCT_ID (0x7850) 72 #define LAN7801_USB_PRODUCT_ID (0x7801) 73 #define LAN78XX_EEPROM_MAGIC (0x78A5) 74 #define LAN78XX_OTP_MAGIC (0x78F3) 75 76 #define MII_READ 1 77 #define MII_WRITE 0 78 79 #define EEPROM_INDICATOR (0xA5) 80 #define EEPROM_MAC_OFFSET (0x01) 81 #define MAX_EEPROM_SIZE 512 82 #define OTP_INDICATOR_1 (0xF3) 83 #define OTP_INDICATOR_2 (0xF7) 84 85 #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ 86 WAKE_MCAST | WAKE_BCAST | \ 87 WAKE_ARP | WAKE_MAGIC) 88 89 /* USB related defines */ 90 #define BULK_IN_PIPE 1 91 #define BULK_OUT_PIPE 2 92 93 /* default autosuspend delay (mSec)*/ 94 #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) 95 96 /* statistic update interval (mSec) */ 97 #define STAT_UPDATE_TIMER (1 * 1000) 98 99 /* defines interrupts from interrupt EP */ 100 #define MAX_INT_EP (32) 101 #define INT_EP_INTEP (31) 102 #define INT_EP_OTP_WR_DONE (28) 103 #define INT_EP_EEE_TX_LPI_START (26) 104 #define INT_EP_EEE_TX_LPI_STOP (25) 105 #define INT_EP_EEE_RX_LPI (24) 106 #define INT_EP_MAC_RESET_TIMEOUT (23) 107 #define INT_EP_RDFO (22) 108 #define INT_EP_TXE (21) 109 #define INT_EP_USB_STATUS (20) 110 #define INT_EP_TX_DIS (19) 111 #define INT_EP_RX_DIS (18) 112 #define INT_EP_PHY (17) 113 #define INT_EP_DP (16) 114 #define INT_EP_MAC_ERR (15) 115 #define INT_EP_TDFU (14) 116 #define INT_EP_TDFO (13) 117 #define INT_EP_UTX (12) 118 #define INT_EP_GPIO_11 (11) 119 #define INT_EP_GPIO_10 (10) 120 #define INT_EP_GPIO_9 (9) 121 #define INT_EP_GPIO_8 (8) 122 #define INT_EP_GPIO_7 (7) 123 #define INT_EP_GPIO_6 (6) 124 #define INT_EP_GPIO_5 (5) 125 #define INT_EP_GPIO_4 (4) 126 #define INT_EP_GPIO_3 (3) 127 #define INT_EP_GPIO_2 (2) 128 #define INT_EP_GPIO_1 (1) 129 #define INT_EP_GPIO_0 (0) 130 131 static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { 132 "RX FCS Errors", 133 "RX Alignment Errors", 134 "Rx Fragment Errors", 135 "RX Jabber Errors", 136 "RX Undersize Frame Errors", 137 "RX Oversize Frame Errors", 138 "RX Dropped Frames", 139 "RX Unicast Byte Count", 140 "RX Broadcast Byte Count", 141 "RX Multicast Byte Count", 142 "RX Unicast Frames", 143 "RX Broadcast Frames", 144 "RX Multicast Frames", 145 "RX Pause Frames", 146 "RX 64 Byte Frames", 147 "RX 65 - 127 Byte Frames", 148 "RX 128 - 255 Byte Frames", 149 "RX 256 - 511 Bytes Frames", 150 "RX 512 - 1023 Byte Frames", 151 "RX 1024 - 1518 Byte Frames", 152 "RX Greater 1518 Byte Frames", 153 "EEE RX LPI Transitions", 154 "EEE RX LPI Time", 155 "TX FCS Errors", 156 "TX Excess Deferral Errors", 157 "TX Carrier Errors", 158 "TX Bad Byte Count", 159 "TX Single Collisions", 160 "TX Multiple Collisions", 161 "TX Excessive Collision", 162 "TX Late Collisions", 163 "TX Unicast Byte Count", 164 "TX Broadcast Byte Count", 165 "TX Multicast Byte Count", 166 "TX Unicast Frames", 167 "TX Broadcast Frames", 168 "TX Multicast Frames", 169 "TX Pause Frames", 170 "TX 64 Byte Frames", 171 "TX 65 - 127 Byte Frames", 172 "TX 128 - 255 Byte Frames", 173 "TX 256 - 511 Bytes Frames", 174 "TX 512 - 1023 Byte Frames", 175 "TX 1024 - 1518 Byte Frames", 176 "TX Greater 1518 Byte Frames", 177 "EEE TX LPI Transitions", 178 "EEE TX LPI Time", 179 }; 180 181 struct lan78xx_statstage { 182 u32 rx_fcs_errors; 183 u32 rx_alignment_errors; 184 u32 rx_fragment_errors; 185 u32 rx_jabber_errors; 186 u32 rx_undersize_frame_errors; 187 u32 rx_oversize_frame_errors; 188 u32 rx_dropped_frames; 189 u32 rx_unicast_byte_count; 190 u32 rx_broadcast_byte_count; 191 u32 rx_multicast_byte_count; 192 u32 rx_unicast_frames; 193 u32 rx_broadcast_frames; 194 u32 rx_multicast_frames; 195 u32 rx_pause_frames; 196 u32 rx_64_byte_frames; 197 u32 rx_65_127_byte_frames; 198 u32 rx_128_255_byte_frames; 199 u32 rx_256_511_bytes_frames; 200 u32 rx_512_1023_byte_frames; 201 u32 rx_1024_1518_byte_frames; 202 u32 rx_greater_1518_byte_frames; 203 u32 eee_rx_lpi_transitions; 204 u32 eee_rx_lpi_time; 205 u32 tx_fcs_errors; 206 u32 tx_excess_deferral_errors; 207 u32 tx_carrier_errors; 208 u32 tx_bad_byte_count; 209 u32 tx_single_collisions; 210 u32 tx_multiple_collisions; 211 u32 tx_excessive_collision; 212 u32 tx_late_collisions; 213 u32 tx_unicast_byte_count; 214 u32 tx_broadcast_byte_count; 215 u32 tx_multicast_byte_count; 216 u32 tx_unicast_frames; 217 u32 tx_broadcast_frames; 218 u32 tx_multicast_frames; 219 u32 tx_pause_frames; 220 u32 tx_64_byte_frames; 221 u32 tx_65_127_byte_frames; 222 u32 tx_128_255_byte_frames; 223 u32 tx_256_511_bytes_frames; 224 u32 tx_512_1023_byte_frames; 225 u32 tx_1024_1518_byte_frames; 226 u32 tx_greater_1518_byte_frames; 227 u32 eee_tx_lpi_transitions; 228 u32 eee_tx_lpi_time; 229 }; 230 231 struct lan78xx_statstage64 { 232 u64 rx_fcs_errors; 233 u64 rx_alignment_errors; 234 u64 rx_fragment_errors; 235 u64 rx_jabber_errors; 236 u64 rx_undersize_frame_errors; 237 u64 rx_oversize_frame_errors; 238 u64 rx_dropped_frames; 239 u64 rx_unicast_byte_count; 240 u64 rx_broadcast_byte_count; 241 u64 rx_multicast_byte_count; 242 u64 rx_unicast_frames; 243 u64 rx_broadcast_frames; 244 u64 rx_multicast_frames; 245 u64 rx_pause_frames; 246 u64 rx_64_byte_frames; 247 u64 rx_65_127_byte_frames; 248 u64 rx_128_255_byte_frames; 249 u64 rx_256_511_bytes_frames; 250 u64 rx_512_1023_byte_frames; 251 u64 rx_1024_1518_byte_frames; 252 u64 rx_greater_1518_byte_frames; 253 u64 eee_rx_lpi_transitions; 254 u64 eee_rx_lpi_time; 255 u64 tx_fcs_errors; 256 u64 tx_excess_deferral_errors; 257 u64 tx_carrier_errors; 258 u64 tx_bad_byte_count; 259 u64 tx_single_collisions; 260 u64 tx_multiple_collisions; 261 u64 tx_excessive_collision; 262 u64 tx_late_collisions; 263 u64 tx_unicast_byte_count; 264 u64 tx_broadcast_byte_count; 265 u64 tx_multicast_byte_count; 266 u64 tx_unicast_frames; 267 u64 tx_broadcast_frames; 268 u64 tx_multicast_frames; 269 u64 tx_pause_frames; 270 u64 tx_64_byte_frames; 271 u64 tx_65_127_byte_frames; 272 u64 tx_128_255_byte_frames; 273 u64 tx_256_511_bytes_frames; 274 u64 tx_512_1023_byte_frames; 275 u64 tx_1024_1518_byte_frames; 276 u64 tx_greater_1518_byte_frames; 277 u64 eee_tx_lpi_transitions; 278 u64 eee_tx_lpi_time; 279 }; 280 281 struct lan78xx_net; 282 283 struct lan78xx_priv { 284 struct lan78xx_net *dev; 285 u32 rfe_ctl; 286 u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */ 287 u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ 288 u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; 289 struct mutex dataport_mutex; /* for dataport access */ 290 spinlock_t rfe_ctl_lock; /* for rfe register access */ 291 struct work_struct set_multicast; 292 struct work_struct set_vlan; 293 u32 wol; 294 }; 295 296 enum skb_state { 297 illegal = 0, 298 tx_start, 299 tx_done, 300 rx_start, 301 rx_done, 302 rx_cleanup, 303 unlink_start 304 }; 305 306 struct skb_data { /* skb->cb is one of these */ 307 struct urb *urb; 308 struct lan78xx_net *dev; 309 enum skb_state state; 310 size_t length; 311 int num_of_packet; 312 }; 313 314 struct usb_context { 315 struct usb_ctrlrequest req; 316 struct lan78xx_net *dev; 317 }; 318 319 #define EVENT_TX_HALT 0 320 #define EVENT_RX_HALT 1 321 #define EVENT_RX_MEMORY 2 322 #define EVENT_STS_SPLIT 3 323 #define EVENT_LINK_RESET 4 324 #define EVENT_RX_PAUSED 5 325 #define EVENT_DEV_WAKING 6 326 #define EVENT_DEV_ASLEEP 7 327 #define EVENT_DEV_OPEN 8 328 #define EVENT_STAT_UPDATE 9 329 330 struct statstage { 331 struct mutex access_lock; /* for stats access */ 332 struct lan78xx_statstage saved; 333 struct lan78xx_statstage rollover_count; 334 struct lan78xx_statstage rollover_max; 335 struct lan78xx_statstage64 curr_stat; 336 }; 337 338 struct irq_domain_data { 339 struct irq_domain *irqdomain; 340 unsigned int phyirq; 341 struct irq_chip *irqchip; 342 irq_flow_handler_t irq_handler; 343 u32 irqenable; 344 struct mutex irq_lock; /* for irq bus access */ 345 }; 346 347 struct lan78xx_net { 348 struct net_device *net; 349 struct usb_device *udev; 350 struct usb_interface *intf; 351 void *driver_priv; 352 353 int rx_qlen; 354 int tx_qlen; 355 struct sk_buff_head rxq; 356 struct sk_buff_head txq; 357 struct sk_buff_head done; 358 struct sk_buff_head rxq_pause; 359 struct sk_buff_head txq_pend; 360 361 struct tasklet_struct bh; 362 struct delayed_work wq; 363 364 struct usb_host_endpoint *ep_blkin; 365 struct usb_host_endpoint *ep_blkout; 366 struct usb_host_endpoint *ep_intr; 367 368 int msg_enable; 369 370 struct urb *urb_intr; 371 struct usb_anchor deferred; 372 373 struct mutex phy_mutex; /* for phy access */ 374 unsigned pipe_in, pipe_out, pipe_intr; 375 376 u32 hard_mtu; /* count any extra framing */ 377 size_t rx_urb_size; /* size for rx urbs */ 378 379 unsigned long flags; 380 381 wait_queue_head_t *wait; 382 unsigned char suspend_count; 383 384 unsigned maxpacket; 385 struct timer_list delay; 386 struct timer_list stat_monitor; 387 388 unsigned long data[5]; 389 390 int link_on; 391 u8 mdix_ctrl; 392 393 u32 chipid; 394 u32 chiprev; 395 struct mii_bus *mdiobus; 396 phy_interface_t interface; 397 398 int fc_autoneg; 399 u8 fc_request_control; 400 401 int delta; 402 struct statstage stats; 403 404 struct irq_domain_data domain_data; 405 }; 406 407 /* define external phy id */ 408 #define PHY_LAN8835 (0x0007C130) 409 #define PHY_KSZ9031RNX (0x00221620) 410 411 /* use ethtool to change the level for any given device */ 412 static int msg_level = -1; 413 module_param(msg_level, int, 0); 414 MODULE_PARM_DESC(msg_level, "Override default message level"); 415 416 static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) 417 { 418 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); 419 int ret; 420 421 if (!buf) 422 return -ENOMEM; 423 424 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 425 USB_VENDOR_REQUEST_READ_REGISTER, 426 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 427 0, index, buf, 4, USB_CTRL_GET_TIMEOUT); 428 if (likely(ret >= 0)) { 429 le32_to_cpus(buf); 430 *data = *buf; 431 } else { 432 netdev_warn(dev->net, 433 "Failed to read register index 0x%08x. ret = %d", 434 index, ret); 435 } 436 437 kfree(buf); 438 439 return ret; 440 } 441 442 static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) 443 { 444 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); 445 int ret; 446 447 if (!buf) 448 return -ENOMEM; 449 450 *buf = data; 451 cpu_to_le32s(buf); 452 453 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 454 USB_VENDOR_REQUEST_WRITE_REGISTER, 455 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 456 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); 457 if (unlikely(ret < 0)) { 458 netdev_warn(dev->net, 459 "Failed to write register index 0x%08x. ret = %d", 460 index, ret); 461 } 462 463 kfree(buf); 464 465 return ret; 466 } 467 468 static int lan78xx_read_stats(struct lan78xx_net *dev, 469 struct lan78xx_statstage *data) 470 { 471 int ret = 0; 472 int i; 473 struct lan78xx_statstage *stats; 474 u32 *src; 475 u32 *dst; 476 477 stats = kmalloc(sizeof(*stats), GFP_KERNEL); 478 if (!stats) 479 return -ENOMEM; 480 481 ret = usb_control_msg(dev->udev, 482 usb_rcvctrlpipe(dev->udev, 0), 483 USB_VENDOR_REQUEST_GET_STATS, 484 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 485 0, 486 0, 487 (void *)stats, 488 sizeof(*stats), 489 USB_CTRL_SET_TIMEOUT); 490 if (likely(ret >= 0)) { 491 src = (u32 *)stats; 492 dst = (u32 *)data; 493 for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) { 494 le32_to_cpus(&src[i]); 495 dst[i] = src[i]; 496 } 497 } else { 498 netdev_warn(dev->net, 499 "Failed to read stat ret = 0x%x", ret); 500 } 501 502 kfree(stats); 503 504 return ret; 505 } 506 507 #define check_counter_rollover(struct1, dev_stats, member) { \ 508 if (struct1->member < dev_stats.saved.member) \ 509 dev_stats.rollover_count.member++; \ 510 } 511 512 static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, 513 struct lan78xx_statstage *stats) 514 { 515 check_counter_rollover(stats, dev->stats, rx_fcs_errors); 516 check_counter_rollover(stats, dev->stats, rx_alignment_errors); 517 check_counter_rollover(stats, dev->stats, rx_fragment_errors); 518 check_counter_rollover(stats, dev->stats, rx_jabber_errors); 519 check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors); 520 check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors); 521 check_counter_rollover(stats, dev->stats, rx_dropped_frames); 522 check_counter_rollover(stats, dev->stats, rx_unicast_byte_count); 523 check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count); 524 check_counter_rollover(stats, dev->stats, rx_multicast_byte_count); 525 check_counter_rollover(stats, dev->stats, rx_unicast_frames); 526 check_counter_rollover(stats, dev->stats, rx_broadcast_frames); 527 check_counter_rollover(stats, dev->stats, rx_multicast_frames); 528 check_counter_rollover(stats, dev->stats, rx_pause_frames); 529 check_counter_rollover(stats, dev->stats, rx_64_byte_frames); 530 check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames); 531 check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames); 532 check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames); 533 check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames); 534 check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames); 535 check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames); 536 check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions); 537 check_counter_rollover(stats, dev->stats, eee_rx_lpi_time); 538 check_counter_rollover(stats, dev->stats, tx_fcs_errors); 539 check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors); 540 check_counter_rollover(stats, dev->stats, tx_carrier_errors); 541 check_counter_rollover(stats, dev->stats, tx_bad_byte_count); 542 check_counter_rollover(stats, dev->stats, tx_single_collisions); 543 check_counter_rollover(stats, dev->stats, tx_multiple_collisions); 544 check_counter_rollover(stats, dev->stats, tx_excessive_collision); 545 check_counter_rollover(stats, dev->stats, tx_late_collisions); 546 check_counter_rollover(stats, dev->stats, tx_unicast_byte_count); 547 check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count); 548 check_counter_rollover(stats, dev->stats, tx_multicast_byte_count); 549 check_counter_rollover(stats, dev->stats, tx_unicast_frames); 550 check_counter_rollover(stats, dev->stats, tx_broadcast_frames); 551 check_counter_rollover(stats, dev->stats, tx_multicast_frames); 552 check_counter_rollover(stats, dev->stats, tx_pause_frames); 553 check_counter_rollover(stats, dev->stats, tx_64_byte_frames); 554 check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames); 555 check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames); 556 check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames); 557 check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames); 558 check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames); 559 check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames); 560 check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions); 561 check_counter_rollover(stats, dev->stats, eee_tx_lpi_time); 562 563 memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage)); 564 } 565 566 static void lan78xx_update_stats(struct lan78xx_net *dev) 567 { 568 u32 *p, *count, *max; 569 u64 *data; 570 int i; 571 struct lan78xx_statstage lan78xx_stats; 572 573 if (usb_autopm_get_interface(dev->intf) < 0) 574 return; 575 576 p = (u32 *)&lan78xx_stats; 577 count = (u32 *)&dev->stats.rollover_count; 578 max = (u32 *)&dev->stats.rollover_max; 579 data = (u64 *)&dev->stats.curr_stat; 580 581 mutex_lock(&dev->stats.access_lock); 582 583 if (lan78xx_read_stats(dev, &lan78xx_stats) > 0) 584 lan78xx_check_stat_rollover(dev, &lan78xx_stats); 585 586 for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++) 587 data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1)); 588 589 mutex_unlock(&dev->stats.access_lock); 590 591 usb_autopm_put_interface(dev->intf); 592 } 593 594 /* Loop until the read is completed with timeout called with phy_mutex held */ 595 static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) 596 { 597 unsigned long start_time = jiffies; 598 u32 val; 599 int ret; 600 601 do { 602 ret = lan78xx_read_reg(dev, MII_ACC, &val); 603 if (unlikely(ret < 0)) 604 return -EIO; 605 606 if (!(val & MII_ACC_MII_BUSY_)) 607 return 0; 608 } while (!time_after(jiffies, start_time + HZ)); 609 610 return -EIO; 611 } 612 613 static inline u32 mii_access(int id, int index, int read) 614 { 615 u32 ret; 616 617 ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_; 618 ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_; 619 if (read) 620 ret |= MII_ACC_MII_READ_; 621 else 622 ret |= MII_ACC_MII_WRITE_; 623 ret |= MII_ACC_MII_BUSY_; 624 625 return ret; 626 } 627 628 static int lan78xx_wait_eeprom(struct lan78xx_net *dev) 629 { 630 unsigned long start_time = jiffies; 631 u32 val; 632 int ret; 633 634 do { 635 ret = lan78xx_read_reg(dev, E2P_CMD, &val); 636 if (unlikely(ret < 0)) 637 return -EIO; 638 639 if (!(val & E2P_CMD_EPC_BUSY_) || 640 (val & E2P_CMD_EPC_TIMEOUT_)) 641 break; 642 usleep_range(40, 100); 643 } while (!time_after(jiffies, start_time + HZ)); 644 645 if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { 646 netdev_warn(dev->net, "EEPROM read operation timeout"); 647 return -EIO; 648 } 649 650 return 0; 651 } 652 653 static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) 654 { 655 unsigned long start_time = jiffies; 656 u32 val; 657 int ret; 658 659 do { 660 ret = lan78xx_read_reg(dev, E2P_CMD, &val); 661 if (unlikely(ret < 0)) 662 return -EIO; 663 664 if (!(val & E2P_CMD_EPC_BUSY_)) 665 return 0; 666 667 usleep_range(40, 100); 668 } while (!time_after(jiffies, start_time + HZ)); 669 670 netdev_warn(dev->net, "EEPROM is busy"); 671 return -EIO; 672 } 673 674 static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, 675 u32 length, u8 *data) 676 { 677 u32 val; 678 u32 saved; 679 int i, ret; 680 int retval; 681 682 /* depends on chip, some EEPROM pins are muxed with LED function. 683 * disable & restore LED function to access EEPROM. 684 */ 685 ret = lan78xx_read_reg(dev, HW_CFG, &val); 686 saved = val; 687 if (dev->chipid == ID_REV_CHIP_ID_7800_) { 688 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); 689 ret = lan78xx_write_reg(dev, HW_CFG, val); 690 } 691 692 retval = lan78xx_eeprom_confirm_not_busy(dev); 693 if (retval) 694 return retval; 695 696 for (i = 0; i < length; i++) { 697 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; 698 val |= (offset & E2P_CMD_EPC_ADDR_MASK_); 699 ret = lan78xx_write_reg(dev, E2P_CMD, val); 700 if (unlikely(ret < 0)) { 701 retval = -EIO; 702 goto exit; 703 } 704 705 retval = lan78xx_wait_eeprom(dev); 706 if (retval < 0) 707 goto exit; 708 709 ret = lan78xx_read_reg(dev, E2P_DATA, &val); 710 if (unlikely(ret < 0)) { 711 retval = -EIO; 712 goto exit; 713 } 714 715 data[i] = val & 0xFF; 716 offset++; 717 } 718 719 retval = 0; 720 exit: 721 if (dev->chipid == ID_REV_CHIP_ID_7800_) 722 ret = lan78xx_write_reg(dev, HW_CFG, saved); 723 724 return retval; 725 } 726 727 static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, 728 u32 length, u8 *data) 729 { 730 u8 sig; 731 int ret; 732 733 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); 734 if ((ret == 0) && (sig == EEPROM_INDICATOR)) 735 ret = lan78xx_read_raw_eeprom(dev, offset, length, data); 736 else 737 ret = -EINVAL; 738 739 return ret; 740 } 741 742 static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, 743 u32 length, u8 *data) 744 { 745 u32 val; 746 u32 saved; 747 int i, ret; 748 int retval; 749 750 /* depends on chip, some EEPROM pins are muxed with LED function. 751 * disable & restore LED function to access EEPROM. 752 */ 753 ret = lan78xx_read_reg(dev, HW_CFG, &val); 754 saved = val; 755 if (dev->chipid == ID_REV_CHIP_ID_7800_) { 756 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); 757 ret = lan78xx_write_reg(dev, HW_CFG, val); 758 } 759 760 retval = lan78xx_eeprom_confirm_not_busy(dev); 761 if (retval) 762 goto exit; 763 764 /* Issue write/erase enable command */ 765 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; 766 ret = lan78xx_write_reg(dev, E2P_CMD, val); 767 if (unlikely(ret < 0)) { 768 retval = -EIO; 769 goto exit; 770 } 771 772 retval = lan78xx_wait_eeprom(dev); 773 if (retval < 0) 774 goto exit; 775 776 for (i = 0; i < length; i++) { 777 /* Fill data register */ 778 val = data[i]; 779 ret = lan78xx_write_reg(dev, E2P_DATA, val); 780 if (ret < 0) { 781 retval = -EIO; 782 goto exit; 783 } 784 785 /* Send "write" command */ 786 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; 787 val |= (offset & E2P_CMD_EPC_ADDR_MASK_); 788 ret = lan78xx_write_reg(dev, E2P_CMD, val); 789 if (ret < 0) { 790 retval = -EIO; 791 goto exit; 792 } 793 794 retval = lan78xx_wait_eeprom(dev); 795 if (retval < 0) 796 goto exit; 797 798 offset++; 799 } 800 801 retval = 0; 802 exit: 803 if (dev->chipid == ID_REV_CHIP_ID_7800_) 804 ret = lan78xx_write_reg(dev, HW_CFG, saved); 805 806 return retval; 807 } 808 809 static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, 810 u32 length, u8 *data) 811 { 812 int i; 813 int ret; 814 u32 buf; 815 unsigned long timeout; 816 817 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); 818 819 if (buf & OTP_PWR_DN_PWRDN_N_) { 820 /* clear it and wait to be cleared */ 821 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); 822 823 timeout = jiffies + HZ; 824 do { 825 usleep_range(1, 10); 826 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); 827 if (time_after(jiffies, timeout)) { 828 netdev_warn(dev->net, 829 "timeout on OTP_PWR_DN"); 830 return -EIO; 831 } 832 } while (buf & OTP_PWR_DN_PWRDN_N_); 833 } 834 835 for (i = 0; i < length; i++) { 836 ret = lan78xx_write_reg(dev, OTP_ADDR1, 837 ((offset + i) >> 8) & OTP_ADDR1_15_11); 838 ret = lan78xx_write_reg(dev, OTP_ADDR2, 839 ((offset + i) & OTP_ADDR2_10_3)); 840 841 ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); 842 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); 843 844 timeout = jiffies + HZ; 845 do { 846 udelay(1); 847 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); 848 if (time_after(jiffies, timeout)) { 849 netdev_warn(dev->net, 850 "timeout on OTP_STATUS"); 851 return -EIO; 852 } 853 } while (buf & OTP_STATUS_BUSY_); 854 855 ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf); 856 857 data[i] = (u8)(buf & 0xFF); 858 } 859 860 return 0; 861 } 862 863 static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, 864 u32 length, u8 *data) 865 { 866 int i; 867 int ret; 868 u32 buf; 869 unsigned long timeout; 870 871 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); 872 873 if (buf & OTP_PWR_DN_PWRDN_N_) { 874 /* clear it and wait to be cleared */ 875 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); 876 877 timeout = jiffies + HZ; 878 do { 879 udelay(1); 880 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); 881 if (time_after(jiffies, timeout)) { 882 netdev_warn(dev->net, 883 "timeout on OTP_PWR_DN completion"); 884 return -EIO; 885 } 886 } while (buf & OTP_PWR_DN_PWRDN_N_); 887 } 888 889 /* set to BYTE program mode */ 890 ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); 891 892 for (i = 0; i < length; i++) { 893 ret = lan78xx_write_reg(dev, OTP_ADDR1, 894 ((offset + i) >> 8) & OTP_ADDR1_15_11); 895 ret = lan78xx_write_reg(dev, OTP_ADDR2, 896 ((offset + i) & OTP_ADDR2_10_3)); 897 ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); 898 ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); 899 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); 900 901 timeout = jiffies + HZ; 902 do { 903 udelay(1); 904 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); 905 if (time_after(jiffies, timeout)) { 906 netdev_warn(dev->net, 907 "Timeout on OTP_STATUS completion"); 908 return -EIO; 909 } 910 } while (buf & OTP_STATUS_BUSY_); 911 } 912 913 return 0; 914 } 915 916 static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, 917 u32 length, u8 *data) 918 { 919 u8 sig; 920 int ret; 921 922 ret = lan78xx_read_raw_otp(dev, 0, 1, &sig); 923 924 if (ret == 0) { 925 if (sig == OTP_INDICATOR_1) 926 offset = offset; 927 else if (sig == OTP_INDICATOR_2) 928 offset += 0x100; 929 else 930 ret = -EINVAL; 931 ret = lan78xx_read_raw_otp(dev, offset, length, data); 932 } 933 934 return ret; 935 } 936 937 static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) 938 { 939 int i, ret; 940 941 for (i = 0; i < 100; i++) { 942 u32 dp_sel; 943 944 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); 945 if (unlikely(ret < 0)) 946 return -EIO; 947 948 if (dp_sel & DP_SEL_DPRDY_) 949 return 0; 950 951 usleep_range(40, 100); 952 } 953 954 netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out"); 955 956 return -EIO; 957 } 958 959 static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, 960 u32 addr, u32 length, u32 *buf) 961 { 962 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 963 u32 dp_sel; 964 int i, ret; 965 966 if (usb_autopm_get_interface(dev->intf) < 0) 967 return 0; 968 969 mutex_lock(&pdata->dataport_mutex); 970 971 ret = lan78xx_dataport_wait_not_busy(dev); 972 if (ret < 0) 973 goto done; 974 975 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); 976 977 dp_sel &= ~DP_SEL_RSEL_MASK_; 978 dp_sel |= ram_select; 979 ret = lan78xx_write_reg(dev, DP_SEL, dp_sel); 980 981 for (i = 0; i < length; i++) { 982 ret = lan78xx_write_reg(dev, DP_ADDR, addr + i); 983 984 ret = lan78xx_write_reg(dev, DP_DATA, buf[i]); 985 986 ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_); 987 988 ret = lan78xx_dataport_wait_not_busy(dev); 989 if (ret < 0) 990 goto done; 991 } 992 993 done: 994 mutex_unlock(&pdata->dataport_mutex); 995 usb_autopm_put_interface(dev->intf); 996 997 return ret; 998 } 999 1000 static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, 1001 int index, u8 addr[ETH_ALEN]) 1002 { 1003 u32 temp; 1004 1005 if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) { 1006 temp = addr[3]; 1007 temp = addr[2] | (temp << 8); 1008 temp = addr[1] | (temp << 8); 1009 temp = addr[0] | (temp << 8); 1010 pdata->pfilter_table[index][1] = temp; 1011 temp = addr[5]; 1012 temp = addr[4] | (temp << 8); 1013 temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_; 1014 pdata->pfilter_table[index][0] = temp; 1015 } 1016 } 1017 1018 /* returns hash bit number for given MAC address */ 1019 static inline u32 lan78xx_hash(char addr[ETH_ALEN]) 1020 { 1021 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; 1022 } 1023 1024 static void lan78xx_deferred_multicast_write(struct work_struct *param) 1025 { 1026 struct lan78xx_priv *pdata = 1027 container_of(param, struct lan78xx_priv, set_multicast); 1028 struct lan78xx_net *dev = pdata->dev; 1029 int i; 1030 int ret; 1031 1032 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", 1033 pdata->rfe_ctl); 1034 1035 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN, 1036 DP_SEL_VHF_HASH_LEN, pdata->mchash_table); 1037 1038 for (i = 1; i < NUM_OF_MAF; i++) { 1039 ret = lan78xx_write_reg(dev, MAF_HI(i), 0); 1040 ret = lan78xx_write_reg(dev, MAF_LO(i), 1041 pdata->pfilter_table[i][1]); 1042 ret = lan78xx_write_reg(dev, MAF_HI(i), 1043 pdata->pfilter_table[i][0]); 1044 } 1045 1046 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 1047 } 1048 1049 static void lan78xx_set_multicast(struct net_device *netdev) 1050 { 1051 struct lan78xx_net *dev = netdev_priv(netdev); 1052 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 1053 unsigned long flags; 1054 int i; 1055 1056 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 1057 1058 pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ | 1059 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1060 1061 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) 1062 pdata->mchash_table[i] = 0; 1063 /* pfilter_table[0] has own HW address */ 1064 for (i = 1; i < NUM_OF_MAF; i++) { 1065 pdata->pfilter_table[i][0] = 1066 pdata->pfilter_table[i][1] = 0; 1067 } 1068 1069 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_; 1070 1071 if (dev->net->flags & IFF_PROMISC) { 1072 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled"); 1073 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_; 1074 } else { 1075 if (dev->net->flags & IFF_ALLMULTI) { 1076 netif_dbg(dev, drv, dev->net, 1077 "receive all multicast enabled"); 1078 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_; 1079 } 1080 } 1081 1082 if (netdev_mc_count(dev->net)) { 1083 struct netdev_hw_addr *ha; 1084 int i; 1085 1086 netif_dbg(dev, drv, dev->net, "receive multicast hash filter"); 1087 1088 pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_; 1089 1090 i = 1; 1091 netdev_for_each_mc_addr(ha, netdev) { 1092 /* set first 32 into Perfect Filter */ 1093 if (i < 33) { 1094 lan78xx_set_addr_filter(pdata, i, ha->addr); 1095 } else { 1096 u32 bitnum = lan78xx_hash(ha->addr); 1097 1098 pdata->mchash_table[bitnum / 32] |= 1099 (1 << (bitnum % 32)); 1100 pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_; 1101 } 1102 i++; 1103 } 1104 } 1105 1106 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 1107 1108 /* defer register writes to a sleepable context */ 1109 schedule_work(&pdata->set_multicast); 1110 } 1111 1112 static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, 1113 u16 lcladv, u16 rmtadv) 1114 { 1115 u32 flow = 0, fct_flow = 0; 1116 int ret; 1117 u8 cap; 1118 1119 if (dev->fc_autoneg) 1120 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); 1121 else 1122 cap = dev->fc_request_control; 1123 1124 if (cap & FLOW_CTRL_TX) 1125 flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF); 1126 1127 if (cap & FLOW_CTRL_RX) 1128 flow |= FLOW_CR_RX_FCEN_; 1129 1130 if (dev->udev->speed == USB_SPEED_SUPER) 1131 fct_flow = 0x817; 1132 else if (dev->udev->speed == USB_SPEED_HIGH) 1133 fct_flow = 0x211; 1134 1135 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", 1136 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), 1137 (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); 1138 1139 ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow); 1140 1141 /* threshold value should be set before enabling flow */ 1142 ret = lan78xx_write_reg(dev, FLOW, flow); 1143 1144 return 0; 1145 } 1146 1147 static int lan78xx_link_reset(struct lan78xx_net *dev) 1148 { 1149 struct phy_device *phydev = dev->net->phydev; 1150 struct ethtool_link_ksettings ecmd; 1151 int ladv, radv, ret; 1152 u32 buf; 1153 1154 /* clear LAN78xx interrupt status */ 1155 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); 1156 if (unlikely(ret < 0)) 1157 return -EIO; 1158 1159 phy_read_status(phydev); 1160 1161 if (!phydev->link && dev->link_on) { 1162 dev->link_on = false; 1163 1164 /* reset MAC */ 1165 ret = lan78xx_read_reg(dev, MAC_CR, &buf); 1166 if (unlikely(ret < 0)) 1167 return -EIO; 1168 buf |= MAC_CR_RST_; 1169 ret = lan78xx_write_reg(dev, MAC_CR, buf); 1170 if (unlikely(ret < 0)) 1171 return -EIO; 1172 1173 del_timer(&dev->stat_monitor); 1174 } else if (phydev->link && !dev->link_on) { 1175 dev->link_on = true; 1176 1177 phy_ethtool_ksettings_get(phydev, &ecmd); 1178 1179 if (dev->udev->speed == USB_SPEED_SUPER) { 1180 if (ecmd.base.speed == 1000) { 1181 /* disable U2 */ 1182 ret = lan78xx_read_reg(dev, USB_CFG1, &buf); 1183 buf &= ~USB_CFG1_DEV_U2_INIT_EN_; 1184 ret = lan78xx_write_reg(dev, USB_CFG1, buf); 1185 /* enable U1 */ 1186 ret = lan78xx_read_reg(dev, USB_CFG1, &buf); 1187 buf |= USB_CFG1_DEV_U1_INIT_EN_; 1188 ret = lan78xx_write_reg(dev, USB_CFG1, buf); 1189 } else { 1190 /* enable U1 & U2 */ 1191 ret = lan78xx_read_reg(dev, USB_CFG1, &buf); 1192 buf |= USB_CFG1_DEV_U2_INIT_EN_; 1193 buf |= USB_CFG1_DEV_U1_INIT_EN_; 1194 ret = lan78xx_write_reg(dev, USB_CFG1, buf); 1195 } 1196 } 1197 1198 ladv = phy_read(phydev, MII_ADVERTISE); 1199 if (ladv < 0) 1200 return ladv; 1201 1202 radv = phy_read(phydev, MII_LPA); 1203 if (radv < 0) 1204 return radv; 1205 1206 netif_dbg(dev, link, dev->net, 1207 "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x", 1208 ecmd.base.speed, ecmd.base.duplex, ladv, radv); 1209 1210 ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv, 1211 radv); 1212 1213 if (!timer_pending(&dev->stat_monitor)) { 1214 dev->delta = 1; 1215 mod_timer(&dev->stat_monitor, 1216 jiffies + STAT_UPDATE_TIMER); 1217 } 1218 } 1219 1220 return ret; 1221 } 1222 1223 /* some work can't be done in tasklets, so we use keventd 1224 * 1225 * NOTE: annoying asymmetry: if it's active, schedule_work() fails, 1226 * but tasklet_schedule() doesn't. hope the failure is rare. 1227 */ 1228 static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) 1229 { 1230 set_bit(work, &dev->flags); 1231 if (!schedule_delayed_work(&dev->wq, 0)) 1232 netdev_err(dev->net, "kevent %d may have been dropped\n", work); 1233 } 1234 1235 static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) 1236 { 1237 u32 intdata; 1238 1239 if (urb->actual_length != 4) { 1240 netdev_warn(dev->net, 1241 "unexpected urb length %d", urb->actual_length); 1242 return; 1243 } 1244 1245 memcpy(&intdata, urb->transfer_buffer, 4); 1246 le32_to_cpus(&intdata); 1247 1248 if (intdata & INT_ENP_PHY_INT) { 1249 netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata); 1250 lan78xx_defer_kevent(dev, EVENT_LINK_RESET); 1251 1252 if (dev->domain_data.phyirq > 0) 1253 generic_handle_irq(dev->domain_data.phyirq); 1254 } else 1255 netdev_warn(dev->net, 1256 "unexpected interrupt: 0x%08x\n", intdata); 1257 } 1258 1259 static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) 1260 { 1261 return MAX_EEPROM_SIZE; 1262 } 1263 1264 static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, 1265 struct ethtool_eeprom *ee, u8 *data) 1266 { 1267 struct lan78xx_net *dev = netdev_priv(netdev); 1268 1269 ee->magic = LAN78XX_EEPROM_MAGIC; 1270 1271 return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); 1272 } 1273 1274 static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, 1275 struct ethtool_eeprom *ee, u8 *data) 1276 { 1277 struct lan78xx_net *dev = netdev_priv(netdev); 1278 1279 /* Allow entire eeprom update only */ 1280 if ((ee->magic == LAN78XX_EEPROM_MAGIC) && 1281 (ee->offset == 0) && 1282 (ee->len == 512) && 1283 (data[0] == EEPROM_INDICATOR)) 1284 return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data); 1285 else if ((ee->magic == LAN78XX_OTP_MAGIC) && 1286 (ee->offset == 0) && 1287 (ee->len == 512) && 1288 (data[0] == OTP_INDICATOR_1)) 1289 return lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); 1290 1291 return -EINVAL; 1292 } 1293 1294 static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, 1295 u8 *data) 1296 { 1297 if (stringset == ETH_SS_STATS) 1298 memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings)); 1299 } 1300 1301 static int lan78xx_get_sset_count(struct net_device *netdev, int sset) 1302 { 1303 if (sset == ETH_SS_STATS) 1304 return ARRAY_SIZE(lan78xx_gstrings); 1305 else 1306 return -EOPNOTSUPP; 1307 } 1308 1309 static void lan78xx_get_stats(struct net_device *netdev, 1310 struct ethtool_stats *stats, u64 *data) 1311 { 1312 struct lan78xx_net *dev = netdev_priv(netdev); 1313 1314 lan78xx_update_stats(dev); 1315 1316 mutex_lock(&dev->stats.access_lock); 1317 memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat)); 1318 mutex_unlock(&dev->stats.access_lock); 1319 } 1320 1321 static void lan78xx_get_wol(struct net_device *netdev, 1322 struct ethtool_wolinfo *wol) 1323 { 1324 struct lan78xx_net *dev = netdev_priv(netdev); 1325 int ret; 1326 u32 buf; 1327 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 1328 1329 if (usb_autopm_get_interface(dev->intf) < 0) 1330 return; 1331 1332 ret = lan78xx_read_reg(dev, USB_CFG0, &buf); 1333 if (unlikely(ret < 0)) { 1334 wol->supported = 0; 1335 wol->wolopts = 0; 1336 } else { 1337 if (buf & USB_CFG_RMT_WKP_) { 1338 wol->supported = WAKE_ALL; 1339 wol->wolopts = pdata->wol; 1340 } else { 1341 wol->supported = 0; 1342 wol->wolopts = 0; 1343 } 1344 } 1345 1346 usb_autopm_put_interface(dev->intf); 1347 } 1348 1349 static int lan78xx_set_wol(struct net_device *netdev, 1350 struct ethtool_wolinfo *wol) 1351 { 1352 struct lan78xx_net *dev = netdev_priv(netdev); 1353 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 1354 int ret; 1355 1356 ret = usb_autopm_get_interface(dev->intf); 1357 if (ret < 0) 1358 return ret; 1359 1360 pdata->wol = 0; 1361 if (wol->wolopts & WAKE_UCAST) 1362 pdata->wol |= WAKE_UCAST; 1363 if (wol->wolopts & WAKE_MCAST) 1364 pdata->wol |= WAKE_MCAST; 1365 if (wol->wolopts & WAKE_BCAST) 1366 pdata->wol |= WAKE_BCAST; 1367 if (wol->wolopts & WAKE_MAGIC) 1368 pdata->wol |= WAKE_MAGIC; 1369 if (wol->wolopts & WAKE_PHY) 1370 pdata->wol |= WAKE_PHY; 1371 if (wol->wolopts & WAKE_ARP) 1372 pdata->wol |= WAKE_ARP; 1373 1374 device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts); 1375 1376 phy_ethtool_set_wol(netdev->phydev, wol); 1377 1378 usb_autopm_put_interface(dev->intf); 1379 1380 return ret; 1381 } 1382 1383 static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata) 1384 { 1385 struct lan78xx_net *dev = netdev_priv(net); 1386 struct phy_device *phydev = net->phydev; 1387 int ret; 1388 u32 buf; 1389 1390 ret = usb_autopm_get_interface(dev->intf); 1391 if (ret < 0) 1392 return ret; 1393 1394 ret = phy_ethtool_get_eee(phydev, edata); 1395 if (ret < 0) 1396 goto exit; 1397 1398 ret = lan78xx_read_reg(dev, MAC_CR, &buf); 1399 if (buf & MAC_CR_EEE_EN_) { 1400 edata->eee_enabled = true; 1401 edata->eee_active = !!(edata->advertised & 1402 edata->lp_advertised); 1403 edata->tx_lpi_enabled = true; 1404 /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ 1405 ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf); 1406 edata->tx_lpi_timer = buf; 1407 } else { 1408 edata->eee_enabled = false; 1409 edata->eee_active = false; 1410 edata->tx_lpi_enabled = false; 1411 edata->tx_lpi_timer = 0; 1412 } 1413 1414 ret = 0; 1415 exit: 1416 usb_autopm_put_interface(dev->intf); 1417 1418 return ret; 1419 } 1420 1421 static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata) 1422 { 1423 struct lan78xx_net *dev = netdev_priv(net); 1424 int ret; 1425 u32 buf; 1426 1427 ret = usb_autopm_get_interface(dev->intf); 1428 if (ret < 0) 1429 return ret; 1430 1431 if (edata->eee_enabled) { 1432 ret = lan78xx_read_reg(dev, MAC_CR, &buf); 1433 buf |= MAC_CR_EEE_EN_; 1434 ret = lan78xx_write_reg(dev, MAC_CR, buf); 1435 1436 phy_ethtool_set_eee(net->phydev, edata); 1437 1438 buf = (u32)edata->tx_lpi_timer; 1439 ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf); 1440 } else { 1441 ret = lan78xx_read_reg(dev, MAC_CR, &buf); 1442 buf &= ~MAC_CR_EEE_EN_; 1443 ret = lan78xx_write_reg(dev, MAC_CR, buf); 1444 } 1445 1446 usb_autopm_put_interface(dev->intf); 1447 1448 return 0; 1449 } 1450 1451 static u32 lan78xx_get_link(struct net_device *net) 1452 { 1453 phy_read_status(net->phydev); 1454 1455 return net->phydev->link; 1456 } 1457 1458 static void lan78xx_get_drvinfo(struct net_device *net, 1459 struct ethtool_drvinfo *info) 1460 { 1461 struct lan78xx_net *dev = netdev_priv(net); 1462 1463 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); 1464 strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); 1465 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); 1466 } 1467 1468 static u32 lan78xx_get_msglevel(struct net_device *net) 1469 { 1470 struct lan78xx_net *dev = netdev_priv(net); 1471 1472 return dev->msg_enable; 1473 } 1474 1475 static void lan78xx_set_msglevel(struct net_device *net, u32 level) 1476 { 1477 struct lan78xx_net *dev = netdev_priv(net); 1478 1479 dev->msg_enable = level; 1480 } 1481 1482 static int lan78xx_get_link_ksettings(struct net_device *net, 1483 struct ethtool_link_ksettings *cmd) 1484 { 1485 struct lan78xx_net *dev = netdev_priv(net); 1486 struct phy_device *phydev = net->phydev; 1487 int ret; 1488 1489 ret = usb_autopm_get_interface(dev->intf); 1490 if (ret < 0) 1491 return ret; 1492 1493 phy_ethtool_ksettings_get(phydev, cmd); 1494 1495 usb_autopm_put_interface(dev->intf); 1496 1497 return ret; 1498 } 1499 1500 static int lan78xx_set_link_ksettings(struct net_device *net, 1501 const struct ethtool_link_ksettings *cmd) 1502 { 1503 struct lan78xx_net *dev = netdev_priv(net); 1504 struct phy_device *phydev = net->phydev; 1505 int ret = 0; 1506 int temp; 1507 1508 ret = usb_autopm_get_interface(dev->intf); 1509 if (ret < 0) 1510 return ret; 1511 1512 /* change speed & duplex */ 1513 ret = phy_ethtool_ksettings_set(phydev, cmd); 1514 1515 if (!cmd->base.autoneg) { 1516 /* force link down */ 1517 temp = phy_read(phydev, MII_BMCR); 1518 phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK); 1519 mdelay(1); 1520 phy_write(phydev, MII_BMCR, temp); 1521 } 1522 1523 usb_autopm_put_interface(dev->intf); 1524 1525 return ret; 1526 } 1527 1528 static void lan78xx_get_pause(struct net_device *net, 1529 struct ethtool_pauseparam *pause) 1530 { 1531 struct lan78xx_net *dev = netdev_priv(net); 1532 struct phy_device *phydev = net->phydev; 1533 struct ethtool_link_ksettings ecmd; 1534 1535 phy_ethtool_ksettings_get(phydev, &ecmd); 1536 1537 pause->autoneg = dev->fc_autoneg; 1538 1539 if (dev->fc_request_control & FLOW_CTRL_TX) 1540 pause->tx_pause = 1; 1541 1542 if (dev->fc_request_control & FLOW_CTRL_RX) 1543 pause->rx_pause = 1; 1544 } 1545 1546 static int lan78xx_set_pause(struct net_device *net, 1547 struct ethtool_pauseparam *pause) 1548 { 1549 struct lan78xx_net *dev = netdev_priv(net); 1550 struct phy_device *phydev = net->phydev; 1551 struct ethtool_link_ksettings ecmd; 1552 int ret; 1553 1554 phy_ethtool_ksettings_get(phydev, &ecmd); 1555 1556 if (pause->autoneg && !ecmd.base.autoneg) { 1557 ret = -EINVAL; 1558 goto exit; 1559 } 1560 1561 dev->fc_request_control = 0; 1562 if (pause->rx_pause) 1563 dev->fc_request_control |= FLOW_CTRL_RX; 1564 1565 if (pause->tx_pause) 1566 dev->fc_request_control |= FLOW_CTRL_TX; 1567 1568 if (ecmd.base.autoneg) { 1569 u32 mii_adv; 1570 u32 advertising; 1571 1572 ethtool_convert_link_mode_to_legacy_u32( 1573 &advertising, ecmd.link_modes.advertising); 1574 1575 advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); 1576 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); 1577 advertising |= mii_adv_to_ethtool_adv_t(mii_adv); 1578 1579 ethtool_convert_legacy_u32_to_link_mode( 1580 ecmd.link_modes.advertising, advertising); 1581 1582 phy_ethtool_ksettings_set(phydev, &ecmd); 1583 } 1584 1585 dev->fc_autoneg = pause->autoneg; 1586 1587 ret = 0; 1588 exit: 1589 return ret; 1590 } 1591 1592 static const struct ethtool_ops lan78xx_ethtool_ops = { 1593 .get_link = lan78xx_get_link, 1594 .nway_reset = phy_ethtool_nway_reset, 1595 .get_drvinfo = lan78xx_get_drvinfo, 1596 .get_msglevel = lan78xx_get_msglevel, 1597 .set_msglevel = lan78xx_set_msglevel, 1598 .get_eeprom_len = lan78xx_ethtool_get_eeprom_len, 1599 .get_eeprom = lan78xx_ethtool_get_eeprom, 1600 .set_eeprom = lan78xx_ethtool_set_eeprom, 1601 .get_ethtool_stats = lan78xx_get_stats, 1602 .get_sset_count = lan78xx_get_sset_count, 1603 .get_strings = lan78xx_get_strings, 1604 .get_wol = lan78xx_get_wol, 1605 .set_wol = lan78xx_set_wol, 1606 .get_eee = lan78xx_get_eee, 1607 .set_eee = lan78xx_set_eee, 1608 .get_pauseparam = lan78xx_get_pause, 1609 .set_pauseparam = lan78xx_set_pause, 1610 .get_link_ksettings = lan78xx_get_link_ksettings, 1611 .set_link_ksettings = lan78xx_set_link_ksettings, 1612 }; 1613 1614 static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 1615 { 1616 if (!netif_running(netdev)) 1617 return -EINVAL; 1618 1619 return phy_mii_ioctl(netdev->phydev, rq, cmd); 1620 } 1621 1622 static void lan78xx_init_mac_address(struct lan78xx_net *dev) 1623 { 1624 u32 addr_lo, addr_hi; 1625 int ret; 1626 u8 addr[6]; 1627 1628 ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); 1629 ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi); 1630 1631 addr[0] = addr_lo & 0xFF; 1632 addr[1] = (addr_lo >> 8) & 0xFF; 1633 addr[2] = (addr_lo >> 16) & 0xFF; 1634 addr[3] = (addr_lo >> 24) & 0xFF; 1635 addr[4] = addr_hi & 0xFF; 1636 addr[5] = (addr_hi >> 8) & 0xFF; 1637 1638 if (!is_valid_ether_addr(addr)) { 1639 /* reading mac address from EEPROM or OTP */ 1640 if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 1641 addr) == 0) || 1642 (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN, 1643 addr) == 0)) { 1644 if (is_valid_ether_addr(addr)) { 1645 /* eeprom values are valid so use them */ 1646 netif_dbg(dev, ifup, dev->net, 1647 "MAC address read from EEPROM"); 1648 } else { 1649 /* generate random MAC */ 1650 random_ether_addr(addr); 1651 netif_dbg(dev, ifup, dev->net, 1652 "MAC address set to random addr"); 1653 } 1654 1655 addr_lo = addr[0] | (addr[1] << 8) | 1656 (addr[2] << 16) | (addr[3] << 24); 1657 addr_hi = addr[4] | (addr[5] << 8); 1658 1659 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); 1660 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); 1661 } else { 1662 /* generate random MAC */ 1663 random_ether_addr(addr); 1664 netif_dbg(dev, ifup, dev->net, 1665 "MAC address set to random addr"); 1666 } 1667 } 1668 1669 ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); 1670 ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); 1671 1672 ether_addr_copy(dev->net->dev_addr, addr); 1673 } 1674 1675 /* MDIO read and write wrappers for phylib */ 1676 static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) 1677 { 1678 struct lan78xx_net *dev = bus->priv; 1679 u32 val, addr; 1680 int ret; 1681 1682 ret = usb_autopm_get_interface(dev->intf); 1683 if (ret < 0) 1684 return ret; 1685 1686 mutex_lock(&dev->phy_mutex); 1687 1688 /* confirm MII not busy */ 1689 ret = lan78xx_phy_wait_not_busy(dev); 1690 if (ret < 0) 1691 goto done; 1692 1693 /* set the address, index & direction (read from PHY) */ 1694 addr = mii_access(phy_id, idx, MII_READ); 1695 ret = lan78xx_write_reg(dev, MII_ACC, addr); 1696 1697 ret = lan78xx_phy_wait_not_busy(dev); 1698 if (ret < 0) 1699 goto done; 1700 1701 ret = lan78xx_read_reg(dev, MII_DATA, &val); 1702 1703 ret = (int)(val & 0xFFFF); 1704 1705 done: 1706 mutex_unlock(&dev->phy_mutex); 1707 usb_autopm_put_interface(dev->intf); 1708 1709 return ret; 1710 } 1711 1712 static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, 1713 u16 regval) 1714 { 1715 struct lan78xx_net *dev = bus->priv; 1716 u32 val, addr; 1717 int ret; 1718 1719 ret = usb_autopm_get_interface(dev->intf); 1720 if (ret < 0) 1721 return ret; 1722 1723 mutex_lock(&dev->phy_mutex); 1724 1725 /* confirm MII not busy */ 1726 ret = lan78xx_phy_wait_not_busy(dev); 1727 if (ret < 0) 1728 goto done; 1729 1730 val = (u32)regval; 1731 ret = lan78xx_write_reg(dev, MII_DATA, val); 1732 1733 /* set the address, index & direction (write to PHY) */ 1734 addr = mii_access(phy_id, idx, MII_WRITE); 1735 ret = lan78xx_write_reg(dev, MII_ACC, addr); 1736 1737 ret = lan78xx_phy_wait_not_busy(dev); 1738 if (ret < 0) 1739 goto done; 1740 1741 done: 1742 mutex_unlock(&dev->phy_mutex); 1743 usb_autopm_put_interface(dev->intf); 1744 return 0; 1745 } 1746 1747 static int lan78xx_mdio_init(struct lan78xx_net *dev) 1748 { 1749 int ret; 1750 1751 dev->mdiobus = mdiobus_alloc(); 1752 if (!dev->mdiobus) { 1753 netdev_err(dev->net, "can't allocate MDIO bus\n"); 1754 return -ENOMEM; 1755 } 1756 1757 dev->mdiobus->priv = (void *)dev; 1758 dev->mdiobus->read = lan78xx_mdiobus_read; 1759 dev->mdiobus->write = lan78xx_mdiobus_write; 1760 dev->mdiobus->name = "lan78xx-mdiobus"; 1761 1762 snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", 1763 dev->udev->bus->busnum, dev->udev->devnum); 1764 1765 switch (dev->chipid) { 1766 case ID_REV_CHIP_ID_7800_: 1767 case ID_REV_CHIP_ID_7850_: 1768 /* set to internal PHY id */ 1769 dev->mdiobus->phy_mask = ~(1 << 1); 1770 break; 1771 case ID_REV_CHIP_ID_7801_: 1772 /* scan thru PHYAD[2..0] */ 1773 dev->mdiobus->phy_mask = ~(0xFF); 1774 break; 1775 } 1776 1777 ret = mdiobus_register(dev->mdiobus); 1778 if (ret) { 1779 netdev_err(dev->net, "can't register MDIO bus\n"); 1780 goto exit1; 1781 } 1782 1783 netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id); 1784 return 0; 1785 exit1: 1786 mdiobus_free(dev->mdiobus); 1787 return ret; 1788 } 1789 1790 static void lan78xx_remove_mdio(struct lan78xx_net *dev) 1791 { 1792 mdiobus_unregister(dev->mdiobus); 1793 mdiobus_free(dev->mdiobus); 1794 } 1795 1796 static void lan78xx_link_status_change(struct net_device *net) 1797 { 1798 struct phy_device *phydev = net->phydev; 1799 int ret, temp; 1800 1801 /* At forced 100 F/H mode, chip may fail to set mode correctly 1802 * when cable is switched between long(~50+m) and short one. 1803 * As workaround, set to 10 before setting to 100 1804 * at forced 100 F/H mode. 1805 */ 1806 if (!phydev->autoneg && (phydev->speed == 100)) { 1807 /* disable phy interrupt */ 1808 temp = phy_read(phydev, LAN88XX_INT_MASK); 1809 temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_; 1810 ret = phy_write(phydev, LAN88XX_INT_MASK, temp); 1811 1812 temp = phy_read(phydev, MII_BMCR); 1813 temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000); 1814 phy_write(phydev, MII_BMCR, temp); /* set to 10 first */ 1815 temp |= BMCR_SPEED100; 1816 phy_write(phydev, MII_BMCR, temp); /* set to 100 later */ 1817 1818 /* clear pending interrupt generated while workaround */ 1819 temp = phy_read(phydev, LAN88XX_INT_STS); 1820 1821 /* enable phy interrupt back */ 1822 temp = phy_read(phydev, LAN88XX_INT_MASK); 1823 temp |= LAN88XX_INT_MASK_MDINTPIN_EN_; 1824 ret = phy_write(phydev, LAN88XX_INT_MASK, temp); 1825 } 1826 } 1827 1828 static int irq_map(struct irq_domain *d, unsigned int irq, 1829 irq_hw_number_t hwirq) 1830 { 1831 struct irq_domain_data *data = d->host_data; 1832 1833 irq_set_chip_data(irq, data); 1834 irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler); 1835 irq_set_noprobe(irq); 1836 1837 return 0; 1838 } 1839 1840 static void irq_unmap(struct irq_domain *d, unsigned int irq) 1841 { 1842 irq_set_chip_and_handler(irq, NULL, NULL); 1843 irq_set_chip_data(irq, NULL); 1844 } 1845 1846 static const struct irq_domain_ops chip_domain_ops = { 1847 .map = irq_map, 1848 .unmap = irq_unmap, 1849 }; 1850 1851 static void lan78xx_irq_mask(struct irq_data *irqd) 1852 { 1853 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); 1854 1855 data->irqenable &= ~BIT(irqd_to_hwirq(irqd)); 1856 } 1857 1858 static void lan78xx_irq_unmask(struct irq_data *irqd) 1859 { 1860 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); 1861 1862 data->irqenable |= BIT(irqd_to_hwirq(irqd)); 1863 } 1864 1865 static void lan78xx_irq_bus_lock(struct irq_data *irqd) 1866 { 1867 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); 1868 1869 mutex_lock(&data->irq_lock); 1870 } 1871 1872 static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) 1873 { 1874 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); 1875 struct lan78xx_net *dev = 1876 container_of(data, struct lan78xx_net, domain_data); 1877 u32 buf; 1878 int ret; 1879 1880 /* call register access here because irq_bus_lock & irq_bus_sync_unlock 1881 * are only two callbacks executed in non-atomic contex. 1882 */ 1883 ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf); 1884 if (buf != data->irqenable) 1885 ret = lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); 1886 1887 mutex_unlock(&data->irq_lock); 1888 } 1889 1890 static struct irq_chip lan78xx_irqchip = { 1891 .name = "lan78xx-irqs", 1892 .irq_mask = lan78xx_irq_mask, 1893 .irq_unmask = lan78xx_irq_unmask, 1894 .irq_bus_lock = lan78xx_irq_bus_lock, 1895 .irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock, 1896 }; 1897 1898 static int lan78xx_setup_irq_domain(struct lan78xx_net *dev) 1899 { 1900 struct device_node *of_node; 1901 struct irq_domain *irqdomain; 1902 unsigned int irqmap = 0; 1903 u32 buf; 1904 int ret = 0; 1905 1906 of_node = dev->udev->dev.parent->of_node; 1907 1908 mutex_init(&dev->domain_data.irq_lock); 1909 1910 lan78xx_read_reg(dev, INT_EP_CTL, &buf); 1911 dev->domain_data.irqenable = buf; 1912 1913 dev->domain_data.irqchip = &lan78xx_irqchip; 1914 dev->domain_data.irq_handler = handle_simple_irq; 1915 1916 irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0, 1917 &chip_domain_ops, &dev->domain_data); 1918 if (irqdomain) { 1919 /* create mapping for PHY interrupt */ 1920 irqmap = irq_create_mapping(irqdomain, INT_EP_PHY); 1921 if (!irqmap) { 1922 irq_domain_remove(irqdomain); 1923 1924 irqdomain = NULL; 1925 ret = -EINVAL; 1926 } 1927 } else { 1928 ret = -EINVAL; 1929 } 1930 1931 dev->domain_data.irqdomain = irqdomain; 1932 dev->domain_data.phyirq = irqmap; 1933 1934 return ret; 1935 } 1936 1937 static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) 1938 { 1939 if (dev->domain_data.phyirq > 0) { 1940 irq_dispose_mapping(dev->domain_data.phyirq); 1941 1942 if (dev->domain_data.irqdomain) 1943 irq_domain_remove(dev->domain_data.irqdomain); 1944 } 1945 dev->domain_data.phyirq = 0; 1946 dev->domain_data.irqdomain = NULL; 1947 } 1948 1949 static int lan8835_fixup(struct phy_device *phydev) 1950 { 1951 int buf; 1952 int ret; 1953 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); 1954 1955 /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */ 1956 buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010); 1957 buf &= ~0x1800; 1958 buf |= 0x0800; 1959 phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf); 1960 1961 /* RGMII MAC TXC Delay Enable */ 1962 ret = lan78xx_write_reg(dev, MAC_RGMII_ID, 1963 MAC_RGMII_ID_TXC_DELAY_EN_); 1964 1965 /* RGMII TX DLL Tune Adjust */ 1966 ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); 1967 1968 dev->interface = PHY_INTERFACE_MODE_RGMII_TXID; 1969 1970 return 1; 1971 } 1972 1973 static int ksz9031rnx_fixup(struct phy_device *phydev) 1974 { 1975 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); 1976 1977 /* Micrel9301RNX PHY configuration */ 1978 /* RGMII Control Signal Pad Skew */ 1979 phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077); 1980 /* RGMII RX Data Pad Skew */ 1981 phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777); 1982 /* RGMII RX Clock Pad Skew */ 1983 phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF); 1984 1985 dev->interface = PHY_INTERFACE_MODE_RGMII_RXID; 1986 1987 return 1; 1988 } 1989 1990 static int lan78xx_phy_init(struct lan78xx_net *dev) 1991 { 1992 int ret; 1993 u32 mii_adv; 1994 struct phy_device *phydev = dev->net->phydev; 1995 1996 phydev = phy_find_first(dev->mdiobus); 1997 if (!phydev) { 1998 netdev_err(dev->net, "no PHY found\n"); 1999 return -EIO; 2000 } 2001 2002 if ((dev->chipid == ID_REV_CHIP_ID_7800_) || 2003 (dev->chipid == ID_REV_CHIP_ID_7850_)) { 2004 phydev->is_internal = true; 2005 dev->interface = PHY_INTERFACE_MODE_GMII; 2006 2007 } else if (dev->chipid == ID_REV_CHIP_ID_7801_) { 2008 if (!phydev->drv) { 2009 netdev_err(dev->net, "no PHY driver found\n"); 2010 return -EIO; 2011 } 2012 2013 dev->interface = PHY_INTERFACE_MODE_RGMII; 2014 2015 /* external PHY fixup for KSZ9031RNX */ 2016 ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0, 2017 ksz9031rnx_fixup); 2018 if (ret < 0) { 2019 netdev_err(dev->net, "fail to register fixup\n"); 2020 return ret; 2021 } 2022 /* external PHY fixup for LAN8835 */ 2023 ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0, 2024 lan8835_fixup); 2025 if (ret < 0) { 2026 netdev_err(dev->net, "fail to register fixup\n"); 2027 return ret; 2028 } 2029 /* add more external PHY fixup here if needed */ 2030 2031 phydev->is_internal = false; 2032 } else { 2033 netdev_err(dev->net, "unknown ID found\n"); 2034 ret = -EIO; 2035 goto error; 2036 } 2037 2038 /* if phyirq is not set, use polling mode in phylib */ 2039 if (dev->domain_data.phyirq > 0) 2040 phydev->irq = dev->domain_data.phyirq; 2041 else 2042 phydev->irq = 0; 2043 netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq); 2044 2045 /* set to AUTOMDIX */ 2046 phydev->mdix = ETH_TP_MDI_AUTO; 2047 2048 ret = phy_connect_direct(dev->net, phydev, 2049 lan78xx_link_status_change, 2050 dev->interface); 2051 if (ret) { 2052 netdev_err(dev->net, "can't attach PHY to %s\n", 2053 dev->mdiobus->id); 2054 return -EIO; 2055 } 2056 2057 /* MAC doesn't support 1000T Half */ 2058 phydev->supported &= ~SUPPORTED_1000baseT_Half; 2059 2060 /* support both flow controls */ 2061 dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 2062 phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); 2063 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); 2064 phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv); 2065 2066 genphy_config_aneg(phydev); 2067 2068 dev->fc_autoneg = phydev->autoneg; 2069 2070 phy_start(phydev); 2071 2072 netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); 2073 2074 return 0; 2075 2076 error: 2077 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); 2078 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); 2079 2080 return ret; 2081 } 2082 2083 static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) 2084 { 2085 int ret = 0; 2086 u32 buf; 2087 bool rxenabled; 2088 2089 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 2090 2091 rxenabled = ((buf & MAC_RX_RXEN_) != 0); 2092 2093 if (rxenabled) { 2094 buf &= ~MAC_RX_RXEN_; 2095 ret = lan78xx_write_reg(dev, MAC_RX, buf); 2096 } 2097 2098 /* add 4 to size for FCS */ 2099 buf &= ~MAC_RX_MAX_SIZE_MASK_; 2100 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); 2101 2102 ret = lan78xx_write_reg(dev, MAC_RX, buf); 2103 2104 if (rxenabled) { 2105 buf |= MAC_RX_RXEN_; 2106 ret = lan78xx_write_reg(dev, MAC_RX, buf); 2107 } 2108 2109 return 0; 2110 } 2111 2112 static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) 2113 { 2114 struct sk_buff *skb; 2115 unsigned long flags; 2116 int count = 0; 2117 2118 spin_lock_irqsave(&q->lock, flags); 2119 while (!skb_queue_empty(q)) { 2120 struct skb_data *entry; 2121 struct urb *urb; 2122 int ret; 2123 2124 skb_queue_walk(q, skb) { 2125 entry = (struct skb_data *)skb->cb; 2126 if (entry->state != unlink_start) 2127 goto found; 2128 } 2129 break; 2130 found: 2131 entry->state = unlink_start; 2132 urb = entry->urb; 2133 2134 /* Get reference count of the URB to avoid it to be 2135 * freed during usb_unlink_urb, which may trigger 2136 * use-after-free problem inside usb_unlink_urb since 2137 * usb_unlink_urb is always racing with .complete 2138 * handler(include defer_bh). 2139 */ 2140 usb_get_urb(urb); 2141 spin_unlock_irqrestore(&q->lock, flags); 2142 /* during some PM-driven resume scenarios, 2143 * these (async) unlinks complete immediately 2144 */ 2145 ret = usb_unlink_urb(urb); 2146 if (ret != -EINPROGRESS && ret != 0) 2147 netdev_dbg(dev->net, "unlink urb err, %d\n", ret); 2148 else 2149 count++; 2150 usb_put_urb(urb); 2151 spin_lock_irqsave(&q->lock, flags); 2152 } 2153 spin_unlock_irqrestore(&q->lock, flags); 2154 return count; 2155 } 2156 2157 static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) 2158 { 2159 struct lan78xx_net *dev = netdev_priv(netdev); 2160 int ll_mtu = new_mtu + netdev->hard_header_len; 2161 int old_hard_mtu = dev->hard_mtu; 2162 int old_rx_urb_size = dev->rx_urb_size; 2163 int ret; 2164 2165 /* no second zero-length packet read wanted after mtu-sized packets */ 2166 if ((ll_mtu % dev->maxpacket) == 0) 2167 return -EDOM; 2168 2169 ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); 2170 2171 netdev->mtu = new_mtu; 2172 2173 dev->hard_mtu = netdev->mtu + netdev->hard_header_len; 2174 if (dev->rx_urb_size == old_hard_mtu) { 2175 dev->rx_urb_size = dev->hard_mtu; 2176 if (dev->rx_urb_size > old_rx_urb_size) { 2177 if (netif_running(dev->net)) { 2178 unlink_urbs(dev, &dev->rxq); 2179 tasklet_schedule(&dev->bh); 2180 } 2181 } 2182 } 2183 2184 return 0; 2185 } 2186 2187 static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) 2188 { 2189 struct lan78xx_net *dev = netdev_priv(netdev); 2190 struct sockaddr *addr = p; 2191 u32 addr_lo, addr_hi; 2192 int ret; 2193 2194 if (netif_running(netdev)) 2195 return -EBUSY; 2196 2197 if (!is_valid_ether_addr(addr->sa_data)) 2198 return -EADDRNOTAVAIL; 2199 2200 ether_addr_copy(netdev->dev_addr, addr->sa_data); 2201 2202 addr_lo = netdev->dev_addr[0] | 2203 netdev->dev_addr[1] << 8 | 2204 netdev->dev_addr[2] << 16 | 2205 netdev->dev_addr[3] << 24; 2206 addr_hi = netdev->dev_addr[4] | 2207 netdev->dev_addr[5] << 8; 2208 2209 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); 2210 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); 2211 2212 return 0; 2213 } 2214 2215 /* Enable or disable Rx checksum offload engine */ 2216 static int lan78xx_set_features(struct net_device *netdev, 2217 netdev_features_t features) 2218 { 2219 struct lan78xx_net *dev = netdev_priv(netdev); 2220 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 2221 unsigned long flags; 2222 int ret; 2223 2224 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); 2225 2226 if (features & NETIF_F_RXCSUM) { 2227 pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_; 2228 pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_; 2229 } else { 2230 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_); 2231 pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); 2232 } 2233 2234 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2235 pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; 2236 else 2237 pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; 2238 2239 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); 2240 2241 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 2242 2243 return 0; 2244 } 2245 2246 static void lan78xx_deferred_vlan_write(struct work_struct *param) 2247 { 2248 struct lan78xx_priv *pdata = 2249 container_of(param, struct lan78xx_priv, set_vlan); 2250 struct lan78xx_net *dev = pdata->dev; 2251 2252 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0, 2253 DP_SEL_VHF_VLAN_LEN, pdata->vlan_table); 2254 } 2255 2256 static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, 2257 __be16 proto, u16 vid) 2258 { 2259 struct lan78xx_net *dev = netdev_priv(netdev); 2260 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 2261 u16 vid_bit_index; 2262 u16 vid_dword_index; 2263 2264 vid_dword_index = (vid >> 5) & 0x7F; 2265 vid_bit_index = vid & 0x1F; 2266 2267 pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index); 2268 2269 /* defer register writes to a sleepable context */ 2270 schedule_work(&pdata->set_vlan); 2271 2272 return 0; 2273 } 2274 2275 static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, 2276 __be16 proto, u16 vid) 2277 { 2278 struct lan78xx_net *dev = netdev_priv(netdev); 2279 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 2280 u16 vid_bit_index; 2281 u16 vid_dword_index; 2282 2283 vid_dword_index = (vid >> 5) & 0x7F; 2284 vid_bit_index = vid & 0x1F; 2285 2286 pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index); 2287 2288 /* defer register writes to a sleepable context */ 2289 schedule_work(&pdata->set_vlan); 2290 2291 return 0; 2292 } 2293 2294 static void lan78xx_init_ltm(struct lan78xx_net *dev) 2295 { 2296 int ret; 2297 u32 buf; 2298 u32 regs[6] = { 0 }; 2299 2300 ret = lan78xx_read_reg(dev, USB_CFG1, &buf); 2301 if (buf & USB_CFG1_LTM_ENABLE_) { 2302 u8 temp[2]; 2303 /* Get values from EEPROM first */ 2304 if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) { 2305 if (temp[0] == 24) { 2306 ret = lan78xx_read_raw_eeprom(dev, 2307 temp[1] * 2, 2308 24, 2309 (u8 *)regs); 2310 if (ret < 0) 2311 return; 2312 } 2313 } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) { 2314 if (temp[0] == 24) { 2315 ret = lan78xx_read_raw_otp(dev, 2316 temp[1] * 2, 2317 24, 2318 (u8 *)regs); 2319 if (ret < 0) 2320 return; 2321 } 2322 } 2323 } 2324 2325 lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]); 2326 lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]); 2327 lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]); 2328 lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]); 2329 lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]); 2330 lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]); 2331 } 2332 2333 static int lan78xx_reset(struct lan78xx_net *dev) 2334 { 2335 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 2336 u32 buf; 2337 int ret = 0; 2338 unsigned long timeout; 2339 2340 ret = lan78xx_read_reg(dev, HW_CFG, &buf); 2341 buf |= HW_CFG_LRST_; 2342 ret = lan78xx_write_reg(dev, HW_CFG, buf); 2343 2344 timeout = jiffies + HZ; 2345 do { 2346 mdelay(1); 2347 ret = lan78xx_read_reg(dev, HW_CFG, &buf); 2348 if (time_after(jiffies, timeout)) { 2349 netdev_warn(dev->net, 2350 "timeout on completion of LiteReset"); 2351 return -EIO; 2352 } 2353 } while (buf & HW_CFG_LRST_); 2354 2355 lan78xx_init_mac_address(dev); 2356 2357 /* save DEVID for later usage */ 2358 ret = lan78xx_read_reg(dev, ID_REV, &buf); 2359 dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16; 2360 dev->chiprev = buf & ID_REV_CHIP_REV_MASK_; 2361 2362 /* Respond to the IN token with a NAK */ 2363 ret = lan78xx_read_reg(dev, USB_CFG0, &buf); 2364 buf |= USB_CFG_BIR_; 2365 ret = lan78xx_write_reg(dev, USB_CFG0, buf); 2366 2367 /* Init LTM */ 2368 lan78xx_init_ltm(dev); 2369 2370 dev->net->hard_header_len += TX_OVERHEAD; 2371 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; 2372 2373 if (dev->udev->speed == USB_SPEED_SUPER) { 2374 buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE; 2375 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; 2376 dev->rx_qlen = 4; 2377 dev->tx_qlen = 4; 2378 } else if (dev->udev->speed == USB_SPEED_HIGH) { 2379 buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE; 2380 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; 2381 dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size; 2382 dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu; 2383 } else { 2384 buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; 2385 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; 2386 dev->rx_qlen = 4; 2387 } 2388 2389 ret = lan78xx_write_reg(dev, BURST_CAP, buf); 2390 ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); 2391 2392 ret = lan78xx_read_reg(dev, HW_CFG, &buf); 2393 buf |= HW_CFG_MEF_; 2394 ret = lan78xx_write_reg(dev, HW_CFG, buf); 2395 2396 ret = lan78xx_read_reg(dev, USB_CFG0, &buf); 2397 buf |= USB_CFG_BCE_; 2398 ret = lan78xx_write_reg(dev, USB_CFG0, buf); 2399 2400 /* set FIFO sizes */ 2401 buf = (MAX_RX_FIFO_SIZE - 512) / 512; 2402 ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf); 2403 2404 buf = (MAX_TX_FIFO_SIZE - 512) / 512; 2405 ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf); 2406 2407 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); 2408 ret = lan78xx_write_reg(dev, FLOW, 0); 2409 ret = lan78xx_write_reg(dev, FCT_FLOW, 0); 2410 2411 /* Don't need rfe_ctl_lock during initialisation */ 2412 ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); 2413 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_; 2414 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); 2415 2416 /* Enable or disable checksum offload engines */ 2417 lan78xx_set_features(dev->net, dev->net->features); 2418 2419 lan78xx_set_multicast(dev->net); 2420 2421 /* reset PHY */ 2422 ret = lan78xx_read_reg(dev, PMT_CTL, &buf); 2423 buf |= PMT_CTL_PHY_RST_; 2424 ret = lan78xx_write_reg(dev, PMT_CTL, buf); 2425 2426 timeout = jiffies + HZ; 2427 do { 2428 mdelay(1); 2429 ret = lan78xx_read_reg(dev, PMT_CTL, &buf); 2430 if (time_after(jiffies, timeout)) { 2431 netdev_warn(dev->net, "timeout waiting for PHY Reset"); 2432 return -EIO; 2433 } 2434 } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); 2435 2436 ret = lan78xx_read_reg(dev, MAC_CR, &buf); 2437 /* LAN7801 only has RGMII mode */ 2438 if (dev->chipid == ID_REV_CHIP_ID_7801_) 2439 buf &= ~MAC_CR_GMII_EN_; 2440 buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; 2441 ret = lan78xx_write_reg(dev, MAC_CR, buf); 2442 2443 ret = lan78xx_read_reg(dev, MAC_TX, &buf); 2444 buf |= MAC_TX_TXEN_; 2445 ret = lan78xx_write_reg(dev, MAC_TX, buf); 2446 2447 ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf); 2448 buf |= FCT_TX_CTL_EN_; 2449 ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf); 2450 2451 ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); 2452 2453 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 2454 buf |= MAC_RX_RXEN_; 2455 ret = lan78xx_write_reg(dev, MAC_RX, buf); 2456 2457 ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf); 2458 buf |= FCT_RX_CTL_EN_; 2459 ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf); 2460 2461 return 0; 2462 } 2463 2464 static void lan78xx_init_stats(struct lan78xx_net *dev) 2465 { 2466 u32 *p; 2467 int i; 2468 2469 /* initialize for stats update 2470 * some counters are 20bits and some are 32bits 2471 */ 2472 p = (u32 *)&dev->stats.rollover_max; 2473 for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++) 2474 p[i] = 0xFFFFF; 2475 2476 dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF; 2477 dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF; 2478 dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF; 2479 dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF; 2480 dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF; 2481 dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF; 2482 dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF; 2483 dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF; 2484 dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF; 2485 dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF; 2486 2487 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); 2488 } 2489 2490 static int lan78xx_open(struct net_device *net) 2491 { 2492 struct lan78xx_net *dev = netdev_priv(net); 2493 int ret; 2494 2495 ret = usb_autopm_get_interface(dev->intf); 2496 if (ret < 0) 2497 goto out; 2498 2499 ret = lan78xx_reset(dev); 2500 if (ret < 0) 2501 goto done; 2502 2503 ret = lan78xx_phy_init(dev); 2504 if (ret < 0) 2505 goto done; 2506 2507 /* for Link Check */ 2508 if (dev->urb_intr) { 2509 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); 2510 if (ret < 0) { 2511 netif_err(dev, ifup, dev->net, 2512 "intr submit %d\n", ret); 2513 goto done; 2514 } 2515 } 2516 2517 lan78xx_init_stats(dev); 2518 2519 set_bit(EVENT_DEV_OPEN, &dev->flags); 2520 2521 netif_start_queue(net); 2522 2523 dev->link_on = false; 2524 2525 lan78xx_defer_kevent(dev, EVENT_LINK_RESET); 2526 done: 2527 usb_autopm_put_interface(dev->intf); 2528 2529 out: 2530 return ret; 2531 } 2532 2533 static void lan78xx_terminate_urbs(struct lan78xx_net *dev) 2534 { 2535 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup); 2536 DECLARE_WAITQUEUE(wait, current); 2537 int temp; 2538 2539 /* ensure there are no more active urbs */ 2540 add_wait_queue(&unlink_wakeup, &wait); 2541 set_current_state(TASK_UNINTERRUPTIBLE); 2542 dev->wait = &unlink_wakeup; 2543 temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq); 2544 2545 /* maybe wait for deletions to finish. */ 2546 while (!skb_queue_empty(&dev->rxq) && 2547 !skb_queue_empty(&dev->txq) && 2548 !skb_queue_empty(&dev->done)) { 2549 schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS)); 2550 set_current_state(TASK_UNINTERRUPTIBLE); 2551 netif_dbg(dev, ifdown, dev->net, 2552 "waited for %d urb completions\n", temp); 2553 } 2554 set_current_state(TASK_RUNNING); 2555 dev->wait = NULL; 2556 remove_wait_queue(&unlink_wakeup, &wait); 2557 } 2558 2559 static int lan78xx_stop(struct net_device *net) 2560 { 2561 struct lan78xx_net *dev = netdev_priv(net); 2562 2563 if (timer_pending(&dev->stat_monitor)) 2564 del_timer_sync(&dev->stat_monitor); 2565 2566 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); 2567 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); 2568 2569 phy_stop(net->phydev); 2570 phy_disconnect(net->phydev); 2571 2572 net->phydev = NULL; 2573 2574 clear_bit(EVENT_DEV_OPEN, &dev->flags); 2575 netif_stop_queue(net); 2576 2577 netif_info(dev, ifdown, dev->net, 2578 "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n", 2579 net->stats.rx_packets, net->stats.tx_packets, 2580 net->stats.rx_errors, net->stats.tx_errors); 2581 2582 lan78xx_terminate_urbs(dev); 2583 2584 usb_kill_urb(dev->urb_intr); 2585 2586 skb_queue_purge(&dev->rxq_pause); 2587 2588 /* deferred work (task, timer, softirq) must also stop. 2589 * can't flush_scheduled_work() until we drop rtnl (later), 2590 * else workers could deadlock; so make workers a NOP. 2591 */ 2592 dev->flags = 0; 2593 cancel_delayed_work_sync(&dev->wq); 2594 tasklet_kill(&dev->bh); 2595 2596 usb_autopm_put_interface(dev->intf); 2597 2598 return 0; 2599 } 2600 2601 static int lan78xx_linearize(struct sk_buff *skb) 2602 { 2603 return skb_linearize(skb); 2604 } 2605 2606 static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, 2607 struct sk_buff *skb, gfp_t flags) 2608 { 2609 u32 tx_cmd_a, tx_cmd_b; 2610 2611 if (skb_cow_head(skb, TX_OVERHEAD)) { 2612 dev_kfree_skb_any(skb); 2613 return NULL; 2614 } 2615 2616 if (lan78xx_linearize(skb) < 0) 2617 return NULL; 2618 2619 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_; 2620 2621 if (skb->ip_summed == CHECKSUM_PARTIAL) 2622 tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_; 2623 2624 tx_cmd_b = 0; 2625 if (skb_is_gso(skb)) { 2626 u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_); 2627 2628 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_; 2629 2630 tx_cmd_a |= TX_CMD_A_LSO_; 2631 } 2632 2633 if (skb_vlan_tag_present(skb)) { 2634 tx_cmd_a |= TX_CMD_A_IVTG_; 2635 tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_; 2636 } 2637 2638 skb_push(skb, 4); 2639 cpu_to_le32s(&tx_cmd_b); 2640 memcpy(skb->data, &tx_cmd_b, 4); 2641 2642 skb_push(skb, 4); 2643 cpu_to_le32s(&tx_cmd_a); 2644 memcpy(skb->data, &tx_cmd_a, 4); 2645 2646 return skb; 2647 } 2648 2649 static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, 2650 struct sk_buff_head *list, enum skb_state state) 2651 { 2652 unsigned long flags; 2653 enum skb_state old_state; 2654 struct skb_data *entry = (struct skb_data *)skb->cb; 2655 2656 spin_lock_irqsave(&list->lock, flags); 2657 old_state = entry->state; 2658 entry->state = state; 2659 2660 __skb_unlink(skb, list); 2661 spin_unlock(&list->lock); 2662 spin_lock(&dev->done.lock); 2663 2664 __skb_queue_tail(&dev->done, skb); 2665 if (skb_queue_len(&dev->done) == 1) 2666 tasklet_schedule(&dev->bh); 2667 spin_unlock_irqrestore(&dev->done.lock, flags); 2668 2669 return old_state; 2670 } 2671 2672 static void tx_complete(struct urb *urb) 2673 { 2674 struct sk_buff *skb = (struct sk_buff *)urb->context; 2675 struct skb_data *entry = (struct skb_data *)skb->cb; 2676 struct lan78xx_net *dev = entry->dev; 2677 2678 if (urb->status == 0) { 2679 dev->net->stats.tx_packets += entry->num_of_packet; 2680 dev->net->stats.tx_bytes += entry->length; 2681 } else { 2682 dev->net->stats.tx_errors++; 2683 2684 switch (urb->status) { 2685 case -EPIPE: 2686 lan78xx_defer_kevent(dev, EVENT_TX_HALT); 2687 break; 2688 2689 /* software-driven interface shutdown */ 2690 case -ECONNRESET: 2691 case -ESHUTDOWN: 2692 break; 2693 2694 case -EPROTO: 2695 case -ETIME: 2696 case -EILSEQ: 2697 netif_stop_queue(dev->net); 2698 break; 2699 default: 2700 netif_dbg(dev, tx_err, dev->net, 2701 "tx err %d\n", entry->urb->status); 2702 break; 2703 } 2704 } 2705 2706 usb_autopm_put_interface_async(dev->intf); 2707 2708 defer_bh(dev, skb, &dev->txq, tx_done); 2709 } 2710 2711 static void lan78xx_queue_skb(struct sk_buff_head *list, 2712 struct sk_buff *newsk, enum skb_state state) 2713 { 2714 struct skb_data *entry = (struct skb_data *)newsk->cb; 2715 2716 __skb_queue_tail(list, newsk); 2717 entry->state = state; 2718 } 2719 2720 static netdev_tx_t 2721 lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) 2722 { 2723 struct lan78xx_net *dev = netdev_priv(net); 2724 struct sk_buff *skb2 = NULL; 2725 2726 if (skb) { 2727 skb_tx_timestamp(skb); 2728 skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC); 2729 } 2730 2731 if (skb2) { 2732 skb_queue_tail(&dev->txq_pend, skb2); 2733 2734 /* throttle TX patch at slower than SUPER SPEED USB */ 2735 if ((dev->udev->speed < USB_SPEED_SUPER) && 2736 (skb_queue_len(&dev->txq_pend) > 10)) 2737 netif_stop_queue(net); 2738 } else { 2739 netif_dbg(dev, tx_err, dev->net, 2740 "lan78xx_tx_prep return NULL\n"); 2741 dev->net->stats.tx_errors++; 2742 dev->net->stats.tx_dropped++; 2743 } 2744 2745 tasklet_schedule(&dev->bh); 2746 2747 return NETDEV_TX_OK; 2748 } 2749 2750 static int 2751 lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf) 2752 { 2753 int tmp; 2754 struct usb_host_interface *alt = NULL; 2755 struct usb_host_endpoint *in = NULL, *out = NULL; 2756 struct usb_host_endpoint *status = NULL; 2757 2758 for (tmp = 0; tmp < intf->num_altsetting; tmp++) { 2759 unsigned ep; 2760 2761 in = NULL; 2762 out = NULL; 2763 status = NULL; 2764 alt = intf->altsetting + tmp; 2765 2766 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { 2767 struct usb_host_endpoint *e; 2768 int intr = 0; 2769 2770 e = alt->endpoint + ep; 2771 switch (e->desc.bmAttributes) { 2772 case USB_ENDPOINT_XFER_INT: 2773 if (!usb_endpoint_dir_in(&e->desc)) 2774 continue; 2775 intr = 1; 2776 /* FALLTHROUGH */ 2777 case USB_ENDPOINT_XFER_BULK: 2778 break; 2779 default: 2780 continue; 2781 } 2782 if (usb_endpoint_dir_in(&e->desc)) { 2783 if (!intr && !in) 2784 in = e; 2785 else if (intr && !status) 2786 status = e; 2787 } else { 2788 if (!out) 2789 out = e; 2790 } 2791 } 2792 if (in && out) 2793 break; 2794 } 2795 if (!alt || !in || !out) 2796 return -EINVAL; 2797 2798 dev->pipe_in = usb_rcvbulkpipe(dev->udev, 2799 in->desc.bEndpointAddress & 2800 USB_ENDPOINT_NUMBER_MASK); 2801 dev->pipe_out = usb_sndbulkpipe(dev->udev, 2802 out->desc.bEndpointAddress & 2803 USB_ENDPOINT_NUMBER_MASK); 2804 dev->ep_intr = status; 2805 2806 return 0; 2807 } 2808 2809 static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) 2810 { 2811 struct lan78xx_priv *pdata = NULL; 2812 int ret; 2813 int i; 2814 2815 ret = lan78xx_get_endpoints(dev, intf); 2816 2817 dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL); 2818 2819 pdata = (struct lan78xx_priv *)(dev->data[0]); 2820 if (!pdata) { 2821 netdev_warn(dev->net, "Unable to allocate lan78xx_priv"); 2822 return -ENOMEM; 2823 } 2824 2825 pdata->dev = dev; 2826 2827 spin_lock_init(&pdata->rfe_ctl_lock); 2828 mutex_init(&pdata->dataport_mutex); 2829 2830 INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write); 2831 2832 for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++) 2833 pdata->vlan_table[i] = 0; 2834 2835 INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write); 2836 2837 dev->net->features = 0; 2838 2839 if (DEFAULT_TX_CSUM_ENABLE) 2840 dev->net->features |= NETIF_F_HW_CSUM; 2841 2842 if (DEFAULT_RX_CSUM_ENABLE) 2843 dev->net->features |= NETIF_F_RXCSUM; 2844 2845 if (DEFAULT_TSO_CSUM_ENABLE) 2846 dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; 2847 2848 dev->net->hw_features = dev->net->features; 2849 2850 ret = lan78xx_setup_irq_domain(dev); 2851 if (ret < 0) { 2852 netdev_warn(dev->net, 2853 "lan78xx_setup_irq_domain() failed : %d", ret); 2854 kfree(pdata); 2855 return ret; 2856 } 2857 2858 /* Init all registers */ 2859 ret = lan78xx_reset(dev); 2860 2861 lan78xx_mdio_init(dev); 2862 2863 dev->net->flags |= IFF_MULTICAST; 2864 2865 pdata->wol = WAKE_MAGIC; 2866 2867 return 0; 2868 } 2869 2870 static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) 2871 { 2872 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 2873 2874 lan78xx_remove_irq_domain(dev); 2875 2876 lan78xx_remove_mdio(dev); 2877 2878 if (pdata) { 2879 netif_dbg(dev, ifdown, dev->net, "free pdata"); 2880 kfree(pdata); 2881 pdata = NULL; 2882 dev->data[0] = 0; 2883 } 2884 } 2885 2886 static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, 2887 struct sk_buff *skb, 2888 u32 rx_cmd_a, u32 rx_cmd_b) 2889 { 2890 if (!(dev->net->features & NETIF_F_RXCSUM) || 2891 unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) { 2892 skb->ip_summed = CHECKSUM_NONE; 2893 } else { 2894 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); 2895 skb->ip_summed = CHECKSUM_COMPLETE; 2896 } 2897 } 2898 2899 static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) 2900 { 2901 int status; 2902 2903 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) { 2904 skb_queue_tail(&dev->rxq_pause, skb); 2905 return; 2906 } 2907 2908 dev->net->stats.rx_packets++; 2909 dev->net->stats.rx_bytes += skb->len; 2910 2911 skb->protocol = eth_type_trans(skb, dev->net); 2912 2913 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", 2914 skb->len + sizeof(struct ethhdr), skb->protocol); 2915 memset(skb->cb, 0, sizeof(struct skb_data)); 2916 2917 if (skb_defer_rx_timestamp(skb)) 2918 return; 2919 2920 status = netif_rx(skb); 2921 if (status != NET_RX_SUCCESS) 2922 netif_dbg(dev, rx_err, dev->net, 2923 "netif_rx status %d\n", status); 2924 } 2925 2926 static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb) 2927 { 2928 if (skb->len < dev->net->hard_header_len) 2929 return 0; 2930 2931 while (skb->len > 0) { 2932 u32 rx_cmd_a, rx_cmd_b, align_count, size; 2933 u16 rx_cmd_c; 2934 struct sk_buff *skb2; 2935 unsigned char *packet; 2936 2937 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); 2938 le32_to_cpus(&rx_cmd_a); 2939 skb_pull(skb, sizeof(rx_cmd_a)); 2940 2941 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); 2942 le32_to_cpus(&rx_cmd_b); 2943 skb_pull(skb, sizeof(rx_cmd_b)); 2944 2945 memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c)); 2946 le16_to_cpus(&rx_cmd_c); 2947 skb_pull(skb, sizeof(rx_cmd_c)); 2948 2949 packet = skb->data; 2950 2951 /* get the packet length */ 2952 size = (rx_cmd_a & RX_CMD_A_LEN_MASK_); 2953 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; 2954 2955 if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) { 2956 netif_dbg(dev, rx_err, dev->net, 2957 "Error rx_cmd_a=0x%08x", rx_cmd_a); 2958 } else { 2959 /* last frame in this batch */ 2960 if (skb->len == size) { 2961 lan78xx_rx_csum_offload(dev, skb, 2962 rx_cmd_a, rx_cmd_b); 2963 2964 skb_trim(skb, skb->len - 4); /* remove fcs */ 2965 skb->truesize = size + sizeof(struct sk_buff); 2966 2967 return 1; 2968 } 2969 2970 skb2 = skb_clone(skb, GFP_ATOMIC); 2971 if (unlikely(!skb2)) { 2972 netdev_warn(dev->net, "Error allocating skb"); 2973 return 0; 2974 } 2975 2976 skb2->len = size; 2977 skb2->data = packet; 2978 skb_set_tail_pointer(skb2, size); 2979 2980 lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); 2981 2982 skb_trim(skb2, skb2->len - 4); /* remove fcs */ 2983 skb2->truesize = size + sizeof(struct sk_buff); 2984 2985 lan78xx_skb_return(dev, skb2); 2986 } 2987 2988 skb_pull(skb, size); 2989 2990 /* padding bytes before the next frame starts */ 2991 if (skb->len) 2992 skb_pull(skb, align_count); 2993 } 2994 2995 return 1; 2996 } 2997 2998 static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb) 2999 { 3000 if (!lan78xx_rx(dev, skb)) { 3001 dev->net->stats.rx_errors++; 3002 goto done; 3003 } 3004 3005 if (skb->len) { 3006 lan78xx_skb_return(dev, skb); 3007 return; 3008 } 3009 3010 netif_dbg(dev, rx_err, dev->net, "drop\n"); 3011 dev->net->stats.rx_errors++; 3012 done: 3013 skb_queue_tail(&dev->done, skb); 3014 } 3015 3016 static void rx_complete(struct urb *urb); 3017 3018 static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags) 3019 { 3020 struct sk_buff *skb; 3021 struct skb_data *entry; 3022 unsigned long lockflags; 3023 size_t size = dev->rx_urb_size; 3024 int ret = 0; 3025 3026 skb = netdev_alloc_skb_ip_align(dev->net, size); 3027 if (!skb) { 3028 usb_free_urb(urb); 3029 return -ENOMEM; 3030 } 3031 3032 entry = (struct skb_data *)skb->cb; 3033 entry->urb = urb; 3034 entry->dev = dev; 3035 entry->length = 0; 3036 3037 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in, 3038 skb->data, size, rx_complete, skb); 3039 3040 spin_lock_irqsave(&dev->rxq.lock, lockflags); 3041 3042 if (netif_device_present(dev->net) && 3043 netif_running(dev->net) && 3044 !test_bit(EVENT_RX_HALT, &dev->flags) && 3045 !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { 3046 ret = usb_submit_urb(urb, GFP_ATOMIC); 3047 switch (ret) { 3048 case 0: 3049 lan78xx_queue_skb(&dev->rxq, skb, rx_start); 3050 break; 3051 case -EPIPE: 3052 lan78xx_defer_kevent(dev, EVENT_RX_HALT); 3053 break; 3054 case -ENODEV: 3055 netif_dbg(dev, ifdown, dev->net, "device gone\n"); 3056 netif_device_detach(dev->net); 3057 break; 3058 case -EHOSTUNREACH: 3059 ret = -ENOLINK; 3060 break; 3061 default: 3062 netif_dbg(dev, rx_err, dev->net, 3063 "rx submit, %d\n", ret); 3064 tasklet_schedule(&dev->bh); 3065 } 3066 } else { 3067 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); 3068 ret = -ENOLINK; 3069 } 3070 spin_unlock_irqrestore(&dev->rxq.lock, lockflags); 3071 if (ret) { 3072 dev_kfree_skb_any(skb); 3073 usb_free_urb(urb); 3074 } 3075 return ret; 3076 } 3077 3078 static void rx_complete(struct urb *urb) 3079 { 3080 struct sk_buff *skb = (struct sk_buff *)urb->context; 3081 struct skb_data *entry = (struct skb_data *)skb->cb; 3082 struct lan78xx_net *dev = entry->dev; 3083 int urb_status = urb->status; 3084 enum skb_state state; 3085 3086 skb_put(skb, urb->actual_length); 3087 state = rx_done; 3088 entry->urb = NULL; 3089 3090 switch (urb_status) { 3091 case 0: 3092 if (skb->len < dev->net->hard_header_len) { 3093 state = rx_cleanup; 3094 dev->net->stats.rx_errors++; 3095 dev->net->stats.rx_length_errors++; 3096 netif_dbg(dev, rx_err, dev->net, 3097 "rx length %d\n", skb->len); 3098 } 3099 usb_mark_last_busy(dev->udev); 3100 break; 3101 case -EPIPE: 3102 dev->net->stats.rx_errors++; 3103 lan78xx_defer_kevent(dev, EVENT_RX_HALT); 3104 /* FALLTHROUGH */ 3105 case -ECONNRESET: /* async unlink */ 3106 case -ESHUTDOWN: /* hardware gone */ 3107 netif_dbg(dev, ifdown, dev->net, 3108 "rx shutdown, code %d\n", urb_status); 3109 state = rx_cleanup; 3110 entry->urb = urb; 3111 urb = NULL; 3112 break; 3113 case -EPROTO: 3114 case -ETIME: 3115 case -EILSEQ: 3116 dev->net->stats.rx_errors++; 3117 state = rx_cleanup; 3118 entry->urb = urb; 3119 urb = NULL; 3120 break; 3121 3122 /* data overrun ... flush fifo? */ 3123 case -EOVERFLOW: 3124 dev->net->stats.rx_over_errors++; 3125 /* FALLTHROUGH */ 3126 3127 default: 3128 state = rx_cleanup; 3129 dev->net->stats.rx_errors++; 3130 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); 3131 break; 3132 } 3133 3134 state = defer_bh(dev, skb, &dev->rxq, state); 3135 3136 if (urb) { 3137 if (netif_running(dev->net) && 3138 !test_bit(EVENT_RX_HALT, &dev->flags) && 3139 state != unlink_start) { 3140 rx_submit(dev, urb, GFP_ATOMIC); 3141 return; 3142 } 3143 usb_free_urb(urb); 3144 } 3145 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); 3146 } 3147 3148 static void lan78xx_tx_bh(struct lan78xx_net *dev) 3149 { 3150 int length; 3151 struct urb *urb = NULL; 3152 struct skb_data *entry; 3153 unsigned long flags; 3154 struct sk_buff_head *tqp = &dev->txq_pend; 3155 struct sk_buff *skb, *skb2; 3156 int ret; 3157 int count, pos; 3158 int skb_totallen, pkt_cnt; 3159 3160 skb_totallen = 0; 3161 pkt_cnt = 0; 3162 count = 0; 3163 length = 0; 3164 for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) { 3165 if (skb_is_gso(skb)) { 3166 if (pkt_cnt) { 3167 /* handle previous packets first */ 3168 break; 3169 } 3170 count = 1; 3171 length = skb->len - TX_OVERHEAD; 3172 skb2 = skb_dequeue(tqp); 3173 goto gso_skb; 3174 } 3175 3176 if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) 3177 break; 3178 skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); 3179 pkt_cnt++; 3180 } 3181 3182 /* copy to a single skb */ 3183 skb = alloc_skb(skb_totallen, GFP_ATOMIC); 3184 if (!skb) 3185 goto drop; 3186 3187 skb_put(skb, skb_totallen); 3188 3189 for (count = pos = 0; count < pkt_cnt; count++) { 3190 skb2 = skb_dequeue(tqp); 3191 if (skb2) { 3192 length += (skb2->len - TX_OVERHEAD); 3193 memcpy(skb->data + pos, skb2->data, skb2->len); 3194 pos += roundup(skb2->len, sizeof(u32)); 3195 dev_kfree_skb(skb2); 3196 } 3197 } 3198 3199 gso_skb: 3200 urb = usb_alloc_urb(0, GFP_ATOMIC); 3201 if (!urb) 3202 goto drop; 3203 3204 entry = (struct skb_data *)skb->cb; 3205 entry->urb = urb; 3206 entry->dev = dev; 3207 entry->length = length; 3208 entry->num_of_packet = count; 3209 3210 spin_lock_irqsave(&dev->txq.lock, flags); 3211 ret = usb_autopm_get_interface_async(dev->intf); 3212 if (ret < 0) { 3213 spin_unlock_irqrestore(&dev->txq.lock, flags); 3214 goto drop; 3215 } 3216 3217 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out, 3218 skb->data, skb->len, tx_complete, skb); 3219 3220 if (length % dev->maxpacket == 0) { 3221 /* send USB_ZERO_PACKET */ 3222 urb->transfer_flags |= URB_ZERO_PACKET; 3223 } 3224 3225 #ifdef CONFIG_PM 3226 /* if this triggers the device is still a sleep */ 3227 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { 3228 /* transmission will be done in resume */ 3229 usb_anchor_urb(urb, &dev->deferred); 3230 /* no use to process more packets */ 3231 netif_stop_queue(dev->net); 3232 usb_put_urb(urb); 3233 spin_unlock_irqrestore(&dev->txq.lock, flags); 3234 netdev_dbg(dev->net, "Delaying transmission for resumption\n"); 3235 return; 3236 } 3237 #endif 3238 3239 ret = usb_submit_urb(urb, GFP_ATOMIC); 3240 switch (ret) { 3241 case 0: 3242 netif_trans_update(dev->net); 3243 lan78xx_queue_skb(&dev->txq, skb, tx_start); 3244 if (skb_queue_len(&dev->txq) >= dev->tx_qlen) 3245 netif_stop_queue(dev->net); 3246 break; 3247 case -EPIPE: 3248 netif_stop_queue(dev->net); 3249 lan78xx_defer_kevent(dev, EVENT_TX_HALT); 3250 usb_autopm_put_interface_async(dev->intf); 3251 break; 3252 default: 3253 usb_autopm_put_interface_async(dev->intf); 3254 netif_dbg(dev, tx_err, dev->net, 3255 "tx: submit urb err %d\n", ret); 3256 break; 3257 } 3258 3259 spin_unlock_irqrestore(&dev->txq.lock, flags); 3260 3261 if (ret) { 3262 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret); 3263 drop: 3264 dev->net->stats.tx_dropped++; 3265 if (skb) 3266 dev_kfree_skb_any(skb); 3267 usb_free_urb(urb); 3268 } else 3269 netif_dbg(dev, tx_queued, dev->net, 3270 "> tx, len %d, type 0x%x\n", length, skb->protocol); 3271 } 3272 3273 static void lan78xx_rx_bh(struct lan78xx_net *dev) 3274 { 3275 struct urb *urb; 3276 int i; 3277 3278 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) { 3279 for (i = 0; i < 10; i++) { 3280 if (skb_queue_len(&dev->rxq) >= dev->rx_qlen) 3281 break; 3282 urb = usb_alloc_urb(0, GFP_ATOMIC); 3283 if (urb) 3284 if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK) 3285 return; 3286 } 3287 3288 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) 3289 tasklet_schedule(&dev->bh); 3290 } 3291 if (skb_queue_len(&dev->txq) < dev->tx_qlen) 3292 netif_wake_queue(dev->net); 3293 } 3294 3295 static void lan78xx_bh(unsigned long param) 3296 { 3297 struct lan78xx_net *dev = (struct lan78xx_net *)param; 3298 struct sk_buff *skb; 3299 struct skb_data *entry; 3300 3301 while ((skb = skb_dequeue(&dev->done))) { 3302 entry = (struct skb_data *)(skb->cb); 3303 switch (entry->state) { 3304 case rx_done: 3305 entry->state = rx_cleanup; 3306 rx_process(dev, skb); 3307 continue; 3308 case tx_done: 3309 usb_free_urb(entry->urb); 3310 dev_kfree_skb(skb); 3311 continue; 3312 case rx_cleanup: 3313 usb_free_urb(entry->urb); 3314 dev_kfree_skb(skb); 3315 continue; 3316 default: 3317 netdev_dbg(dev->net, "skb state %d\n", entry->state); 3318 return; 3319 } 3320 } 3321 3322 if (netif_device_present(dev->net) && netif_running(dev->net)) { 3323 /* reset update timer delta */ 3324 if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) { 3325 dev->delta = 1; 3326 mod_timer(&dev->stat_monitor, 3327 jiffies + STAT_UPDATE_TIMER); 3328 } 3329 3330 if (!skb_queue_empty(&dev->txq_pend)) 3331 lan78xx_tx_bh(dev); 3332 3333 if (!timer_pending(&dev->delay) && 3334 !test_bit(EVENT_RX_HALT, &dev->flags)) 3335 lan78xx_rx_bh(dev); 3336 } 3337 } 3338 3339 static void lan78xx_delayedwork(struct work_struct *work) 3340 { 3341 int status; 3342 struct lan78xx_net *dev; 3343 3344 dev = container_of(work, struct lan78xx_net, wq.work); 3345 3346 if (test_bit(EVENT_TX_HALT, &dev->flags)) { 3347 unlink_urbs(dev, &dev->txq); 3348 status = usb_autopm_get_interface(dev->intf); 3349 if (status < 0) 3350 goto fail_pipe; 3351 status = usb_clear_halt(dev->udev, dev->pipe_out); 3352 usb_autopm_put_interface(dev->intf); 3353 if (status < 0 && 3354 status != -EPIPE && 3355 status != -ESHUTDOWN) { 3356 if (netif_msg_tx_err(dev)) 3357 fail_pipe: 3358 netdev_err(dev->net, 3359 "can't clear tx halt, status %d\n", 3360 status); 3361 } else { 3362 clear_bit(EVENT_TX_HALT, &dev->flags); 3363 if (status != -ESHUTDOWN) 3364 netif_wake_queue(dev->net); 3365 } 3366 } 3367 if (test_bit(EVENT_RX_HALT, &dev->flags)) { 3368 unlink_urbs(dev, &dev->rxq); 3369 status = usb_autopm_get_interface(dev->intf); 3370 if (status < 0) 3371 goto fail_halt; 3372 status = usb_clear_halt(dev->udev, dev->pipe_in); 3373 usb_autopm_put_interface(dev->intf); 3374 if (status < 0 && 3375 status != -EPIPE && 3376 status != -ESHUTDOWN) { 3377 if (netif_msg_rx_err(dev)) 3378 fail_halt: 3379 netdev_err(dev->net, 3380 "can't clear rx halt, status %d\n", 3381 status); 3382 } else { 3383 clear_bit(EVENT_RX_HALT, &dev->flags); 3384 tasklet_schedule(&dev->bh); 3385 } 3386 } 3387 3388 if (test_bit(EVENT_LINK_RESET, &dev->flags)) { 3389 int ret = 0; 3390 3391 clear_bit(EVENT_LINK_RESET, &dev->flags); 3392 status = usb_autopm_get_interface(dev->intf); 3393 if (status < 0) 3394 goto skip_reset; 3395 if (lan78xx_link_reset(dev) < 0) { 3396 usb_autopm_put_interface(dev->intf); 3397 skip_reset: 3398 netdev_info(dev->net, "link reset failed (%d)\n", 3399 ret); 3400 } else { 3401 usb_autopm_put_interface(dev->intf); 3402 } 3403 } 3404 3405 if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) { 3406 lan78xx_update_stats(dev); 3407 3408 clear_bit(EVENT_STAT_UPDATE, &dev->flags); 3409 3410 mod_timer(&dev->stat_monitor, 3411 jiffies + (STAT_UPDATE_TIMER * dev->delta)); 3412 3413 dev->delta = min((dev->delta * 2), 50); 3414 } 3415 } 3416 3417 static void intr_complete(struct urb *urb) 3418 { 3419 struct lan78xx_net *dev = urb->context; 3420 int status = urb->status; 3421 3422 switch (status) { 3423 /* success */ 3424 case 0: 3425 lan78xx_status(dev, urb); 3426 break; 3427 3428 /* software-driven interface shutdown */ 3429 case -ENOENT: /* urb killed */ 3430 case -ESHUTDOWN: /* hardware gone */ 3431 netif_dbg(dev, ifdown, dev->net, 3432 "intr shutdown, code %d\n", status); 3433 return; 3434 3435 /* NOTE: not throttling like RX/TX, since this endpoint 3436 * already polls infrequently 3437 */ 3438 default: 3439 netdev_dbg(dev->net, "intr status %d\n", status); 3440 break; 3441 } 3442 3443 if (!netif_running(dev->net)) 3444 return; 3445 3446 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); 3447 status = usb_submit_urb(urb, GFP_ATOMIC); 3448 if (status != 0) 3449 netif_err(dev, timer, dev->net, 3450 "intr resubmit --> %d\n", status); 3451 } 3452 3453 static void lan78xx_disconnect(struct usb_interface *intf) 3454 { 3455 struct lan78xx_net *dev; 3456 struct usb_device *udev; 3457 struct net_device *net; 3458 3459 dev = usb_get_intfdata(intf); 3460 usb_set_intfdata(intf, NULL); 3461 if (!dev) 3462 return; 3463 3464 udev = interface_to_usbdev(intf); 3465 3466 net = dev->net; 3467 unregister_netdev(net); 3468 3469 cancel_delayed_work_sync(&dev->wq); 3470 3471 usb_scuttle_anchored_urbs(&dev->deferred); 3472 3473 lan78xx_unbind(dev, intf); 3474 3475 usb_kill_urb(dev->urb_intr); 3476 usb_free_urb(dev->urb_intr); 3477 3478 free_netdev(net); 3479 usb_put_dev(udev); 3480 } 3481 3482 static void lan78xx_tx_timeout(struct net_device *net) 3483 { 3484 struct lan78xx_net *dev = netdev_priv(net); 3485 3486 unlink_urbs(dev, &dev->txq); 3487 tasklet_schedule(&dev->bh); 3488 } 3489 3490 static const struct net_device_ops lan78xx_netdev_ops = { 3491 .ndo_open = lan78xx_open, 3492 .ndo_stop = lan78xx_stop, 3493 .ndo_start_xmit = lan78xx_start_xmit, 3494 .ndo_tx_timeout = lan78xx_tx_timeout, 3495 .ndo_change_mtu = lan78xx_change_mtu, 3496 .ndo_set_mac_address = lan78xx_set_mac_addr, 3497 .ndo_validate_addr = eth_validate_addr, 3498 .ndo_do_ioctl = lan78xx_ioctl, 3499 .ndo_set_rx_mode = lan78xx_set_multicast, 3500 .ndo_set_features = lan78xx_set_features, 3501 .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid, 3502 .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid, 3503 }; 3504 3505 static void lan78xx_stat_monitor(unsigned long param) 3506 { 3507 struct lan78xx_net *dev; 3508 3509 dev = (struct lan78xx_net *)param; 3510 3511 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); 3512 } 3513 3514 static int lan78xx_probe(struct usb_interface *intf, 3515 const struct usb_device_id *id) 3516 { 3517 struct lan78xx_net *dev; 3518 struct net_device *netdev; 3519 struct usb_device *udev; 3520 int ret; 3521 unsigned maxp; 3522 unsigned period; 3523 u8 *buf = NULL; 3524 3525 udev = interface_to_usbdev(intf); 3526 udev = usb_get_dev(udev); 3527 3528 ret = -ENOMEM; 3529 netdev = alloc_etherdev(sizeof(struct lan78xx_net)); 3530 if (!netdev) { 3531 dev_err(&intf->dev, "Error: OOM\n"); 3532 goto out1; 3533 } 3534 3535 /* netdev_printk() needs this */ 3536 SET_NETDEV_DEV(netdev, &intf->dev); 3537 3538 dev = netdev_priv(netdev); 3539 dev->udev = udev; 3540 dev->intf = intf; 3541 dev->net = netdev; 3542 dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 3543 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 3544 3545 skb_queue_head_init(&dev->rxq); 3546 skb_queue_head_init(&dev->txq); 3547 skb_queue_head_init(&dev->done); 3548 skb_queue_head_init(&dev->rxq_pause); 3549 skb_queue_head_init(&dev->txq_pend); 3550 mutex_init(&dev->phy_mutex); 3551 3552 tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev); 3553 INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork); 3554 init_usb_anchor(&dev->deferred); 3555 3556 netdev->netdev_ops = &lan78xx_netdev_ops; 3557 netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES; 3558 netdev->ethtool_ops = &lan78xx_ethtool_ops; 3559 3560 dev->stat_monitor.function = lan78xx_stat_monitor; 3561 dev->stat_monitor.data = (unsigned long)dev; 3562 dev->delta = 1; 3563 init_timer(&dev->stat_monitor); 3564 3565 mutex_init(&dev->stats.access_lock); 3566 3567 ret = lan78xx_bind(dev, intf); 3568 if (ret < 0) 3569 goto out2; 3570 strcpy(netdev->name, "eth%d"); 3571 3572 if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) 3573 netdev->mtu = dev->hard_mtu - netdev->hard_header_len; 3574 3575 /* MTU range: 68 - 9000 */ 3576 netdev->max_mtu = MAX_SINGLE_PACKET_SIZE; 3577 3578 dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0; 3579 dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1; 3580 dev->ep_intr = (intf->cur_altsetting)->endpoint + 2; 3581 3582 dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); 3583 dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); 3584 3585 dev->pipe_intr = usb_rcvintpipe(dev->udev, 3586 dev->ep_intr->desc.bEndpointAddress & 3587 USB_ENDPOINT_NUMBER_MASK); 3588 period = dev->ep_intr->desc.bInterval; 3589 3590 maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); 3591 buf = kmalloc(maxp, GFP_KERNEL); 3592 if (buf) { 3593 dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL); 3594 if (!dev->urb_intr) { 3595 ret = -ENOMEM; 3596 kfree(buf); 3597 goto out3; 3598 } else { 3599 usb_fill_int_urb(dev->urb_intr, dev->udev, 3600 dev->pipe_intr, buf, maxp, 3601 intr_complete, dev, period); 3602 } 3603 } 3604 3605 dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); 3606 3607 /* driver requires remote-wakeup capability during autosuspend. */ 3608 intf->needs_remote_wakeup = 1; 3609 3610 ret = register_netdev(netdev); 3611 if (ret != 0) { 3612 netif_err(dev, probe, netdev, "couldn't register the device\n"); 3613 goto out2; 3614 } 3615 3616 usb_set_intfdata(intf, dev); 3617 3618 ret = device_set_wakeup_enable(&udev->dev, true); 3619 3620 /* Default delay of 2sec has more overhead than advantage. 3621 * Set to 10sec as default. 3622 */ 3623 pm_runtime_set_autosuspend_delay(&udev->dev, 3624 DEFAULT_AUTOSUSPEND_DELAY); 3625 3626 return 0; 3627 3628 out3: 3629 lan78xx_unbind(dev, intf); 3630 out2: 3631 free_netdev(netdev); 3632 out1: 3633 usb_put_dev(udev); 3634 3635 return ret; 3636 } 3637 3638 static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) 3639 { 3640 const u16 crc16poly = 0x8005; 3641 int i; 3642 u16 bit, crc, msb; 3643 u8 data; 3644 3645 crc = 0xFFFF; 3646 for (i = 0; i < len; i++) { 3647 data = *buf++; 3648 for (bit = 0; bit < 8; bit++) { 3649 msb = crc >> 15; 3650 crc <<= 1; 3651 3652 if (msb ^ (u16)(data & 1)) { 3653 crc ^= crc16poly; 3654 crc |= (u16)0x0001U; 3655 } 3656 data >>= 1; 3657 } 3658 } 3659 3660 return crc; 3661 } 3662 3663 static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) 3664 { 3665 u32 buf; 3666 int ret; 3667 int mask_index; 3668 u16 crc; 3669 u32 temp_wucsr; 3670 u32 temp_pmt_ctl; 3671 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 3672 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 3673 const u8 arp_type[2] = { 0x08, 0x06 }; 3674 3675 ret = lan78xx_read_reg(dev, MAC_TX, &buf); 3676 buf &= ~MAC_TX_TXEN_; 3677 ret = lan78xx_write_reg(dev, MAC_TX, buf); 3678 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 3679 buf &= ~MAC_RX_RXEN_; 3680 ret = lan78xx_write_reg(dev, MAC_RX, buf); 3681 3682 ret = lan78xx_write_reg(dev, WUCSR, 0); 3683 ret = lan78xx_write_reg(dev, WUCSR2, 0); 3684 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); 3685 3686 temp_wucsr = 0; 3687 3688 temp_pmt_ctl = 0; 3689 ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl); 3690 temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_; 3691 temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_; 3692 3693 for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) 3694 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0); 3695 3696 mask_index = 0; 3697 if (wol & WAKE_PHY) { 3698 temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_; 3699 3700 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3701 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3702 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3703 } 3704 if (wol & WAKE_MAGIC) { 3705 temp_wucsr |= WUCSR_MPEN_; 3706 3707 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3708 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3709 temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_; 3710 } 3711 if (wol & WAKE_BCAST) { 3712 temp_wucsr |= WUCSR_BCST_EN_; 3713 3714 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3715 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3716 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3717 } 3718 if (wol & WAKE_MCAST) { 3719 temp_wucsr |= WUCSR_WAKE_EN_; 3720 3721 /* set WUF_CFG & WUF_MASK for IPv4 Multicast */ 3722 crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3); 3723 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 3724 WUF_CFGX_EN_ | 3725 WUF_CFGX_TYPE_MCAST_ | 3726 (0 << WUF_CFGX_OFFSET_SHIFT_) | 3727 (crc & WUF_CFGX_CRC16_MASK_)); 3728 3729 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); 3730 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); 3731 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); 3732 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); 3733 mask_index++; 3734 3735 /* for IPv6 Multicast */ 3736 crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); 3737 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 3738 WUF_CFGX_EN_ | 3739 WUF_CFGX_TYPE_MCAST_ | 3740 (0 << WUF_CFGX_OFFSET_SHIFT_) | 3741 (crc & WUF_CFGX_CRC16_MASK_)); 3742 3743 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); 3744 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); 3745 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); 3746 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); 3747 mask_index++; 3748 3749 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3750 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3751 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3752 } 3753 if (wol & WAKE_UCAST) { 3754 temp_wucsr |= WUCSR_PFDA_EN_; 3755 3756 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3757 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3758 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3759 } 3760 if (wol & WAKE_ARP) { 3761 temp_wucsr |= WUCSR_WAKE_EN_; 3762 3763 /* set WUF_CFG & WUF_MASK 3764 * for packettype (offset 12,13) = ARP (0x0806) 3765 */ 3766 crc = lan78xx_wakeframe_crc16(arp_type, 2); 3767 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 3768 WUF_CFGX_EN_ | 3769 WUF_CFGX_TYPE_ALL_ | 3770 (0 << WUF_CFGX_OFFSET_SHIFT_) | 3771 (crc & WUF_CFGX_CRC16_MASK_)); 3772 3773 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); 3774 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); 3775 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); 3776 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); 3777 mask_index++; 3778 3779 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3780 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3781 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3782 } 3783 3784 ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr); 3785 3786 /* when multiple WOL bits are set */ 3787 if (hweight_long((unsigned long)wol) > 1) { 3788 temp_pmt_ctl |= PMT_CTL_WOL_EN_; 3789 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; 3790 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; 3791 } 3792 ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); 3793 3794 /* clear WUPS */ 3795 ret = lan78xx_read_reg(dev, PMT_CTL, &buf); 3796 buf |= PMT_CTL_WUPS_MASK_; 3797 ret = lan78xx_write_reg(dev, PMT_CTL, buf); 3798 3799 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 3800 buf |= MAC_RX_RXEN_; 3801 ret = lan78xx_write_reg(dev, MAC_RX, buf); 3802 3803 return 0; 3804 } 3805 3806 static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) 3807 { 3808 struct lan78xx_net *dev = usb_get_intfdata(intf); 3809 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); 3810 u32 buf; 3811 int ret; 3812 int event; 3813 3814 event = message.event; 3815 3816 if (!dev->suspend_count++) { 3817 spin_lock_irq(&dev->txq.lock); 3818 /* don't autosuspend while transmitting */ 3819 if ((skb_queue_len(&dev->txq) || 3820 skb_queue_len(&dev->txq_pend)) && 3821 PMSG_IS_AUTO(message)) { 3822 spin_unlock_irq(&dev->txq.lock); 3823 ret = -EBUSY; 3824 goto out; 3825 } else { 3826 set_bit(EVENT_DEV_ASLEEP, &dev->flags); 3827 spin_unlock_irq(&dev->txq.lock); 3828 } 3829 3830 /* stop TX & RX */ 3831 ret = lan78xx_read_reg(dev, MAC_TX, &buf); 3832 buf &= ~MAC_TX_TXEN_; 3833 ret = lan78xx_write_reg(dev, MAC_TX, buf); 3834 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 3835 buf &= ~MAC_RX_RXEN_; 3836 ret = lan78xx_write_reg(dev, MAC_RX, buf); 3837 3838 /* empty out the rx and queues */ 3839 netif_device_detach(dev->net); 3840 lan78xx_terminate_urbs(dev); 3841 usb_kill_urb(dev->urb_intr); 3842 3843 /* reattach */ 3844 netif_device_attach(dev->net); 3845 } 3846 3847 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { 3848 del_timer(&dev->stat_monitor); 3849 3850 if (PMSG_IS_AUTO(message)) { 3851 /* auto suspend (selective suspend) */ 3852 ret = lan78xx_read_reg(dev, MAC_TX, &buf); 3853 buf &= ~MAC_TX_TXEN_; 3854 ret = lan78xx_write_reg(dev, MAC_TX, buf); 3855 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 3856 buf &= ~MAC_RX_RXEN_; 3857 ret = lan78xx_write_reg(dev, MAC_RX, buf); 3858 3859 ret = lan78xx_write_reg(dev, WUCSR, 0); 3860 ret = lan78xx_write_reg(dev, WUCSR2, 0); 3861 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); 3862 3863 /* set goodframe wakeup */ 3864 ret = lan78xx_read_reg(dev, WUCSR, &buf); 3865 3866 buf |= WUCSR_RFE_WAKE_EN_; 3867 buf |= WUCSR_STORE_WAKE_; 3868 3869 ret = lan78xx_write_reg(dev, WUCSR, buf); 3870 3871 ret = lan78xx_read_reg(dev, PMT_CTL, &buf); 3872 3873 buf &= ~PMT_CTL_RES_CLR_WKP_EN_; 3874 buf |= PMT_CTL_RES_CLR_WKP_STS_; 3875 3876 buf |= PMT_CTL_PHY_WAKE_EN_; 3877 buf |= PMT_CTL_WOL_EN_; 3878 buf &= ~PMT_CTL_SUS_MODE_MASK_; 3879 buf |= PMT_CTL_SUS_MODE_3_; 3880 3881 ret = lan78xx_write_reg(dev, PMT_CTL, buf); 3882 3883 ret = lan78xx_read_reg(dev, PMT_CTL, &buf); 3884 3885 buf |= PMT_CTL_WUPS_MASK_; 3886 3887 ret = lan78xx_write_reg(dev, PMT_CTL, buf); 3888 3889 ret = lan78xx_read_reg(dev, MAC_RX, &buf); 3890 buf |= MAC_RX_RXEN_; 3891 ret = lan78xx_write_reg(dev, MAC_RX, buf); 3892 } else { 3893 lan78xx_set_suspend(dev, pdata->wol); 3894 } 3895 } 3896 3897 ret = 0; 3898 out: 3899 return ret; 3900 } 3901 3902 static int lan78xx_resume(struct usb_interface *intf) 3903 { 3904 struct lan78xx_net *dev = usb_get_intfdata(intf); 3905 struct sk_buff *skb; 3906 struct urb *res; 3907 int ret; 3908 u32 buf; 3909 3910 if (!timer_pending(&dev->stat_monitor)) { 3911 dev->delta = 1; 3912 mod_timer(&dev->stat_monitor, 3913 jiffies + STAT_UPDATE_TIMER); 3914 } 3915 3916 if (!--dev->suspend_count) { 3917 /* resume interrupt URBs */ 3918 if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags)) 3919 usb_submit_urb(dev->urb_intr, GFP_NOIO); 3920 3921 spin_lock_irq(&dev->txq.lock); 3922 while ((res = usb_get_from_anchor(&dev->deferred))) { 3923 skb = (struct sk_buff *)res->context; 3924 ret = usb_submit_urb(res, GFP_ATOMIC); 3925 if (ret < 0) { 3926 dev_kfree_skb_any(skb); 3927 usb_free_urb(res); 3928 usb_autopm_put_interface_async(dev->intf); 3929 } else { 3930 netif_trans_update(dev->net); 3931 lan78xx_queue_skb(&dev->txq, skb, tx_start); 3932 } 3933 } 3934 3935 clear_bit(EVENT_DEV_ASLEEP, &dev->flags); 3936 spin_unlock_irq(&dev->txq.lock); 3937 3938 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { 3939 if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen)) 3940 netif_start_queue(dev->net); 3941 tasklet_schedule(&dev->bh); 3942 } 3943 } 3944 3945 ret = lan78xx_write_reg(dev, WUCSR2, 0); 3946 ret = lan78xx_write_reg(dev, WUCSR, 0); 3947 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); 3948 3949 ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ | 3950 WUCSR2_ARP_RCD_ | 3951 WUCSR2_IPV6_TCPSYN_RCD_ | 3952 WUCSR2_IPV4_TCPSYN_RCD_); 3953 3954 ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ | 3955 WUCSR_EEE_RX_WAKE_ | 3956 WUCSR_PFDA_FR_ | 3957 WUCSR_RFE_WAKE_FR_ | 3958 WUCSR_WUFR_ | 3959 WUCSR_MPR_ | 3960 WUCSR_BCST_FR_); 3961 3962 ret = lan78xx_read_reg(dev, MAC_TX, &buf); 3963 buf |= MAC_TX_TXEN_; 3964 ret = lan78xx_write_reg(dev, MAC_TX, buf); 3965 3966 return 0; 3967 } 3968 3969 static int lan78xx_reset_resume(struct usb_interface *intf) 3970 { 3971 struct lan78xx_net *dev = usb_get_intfdata(intf); 3972 3973 lan78xx_reset(dev); 3974 3975 lan78xx_phy_init(dev); 3976 3977 return lan78xx_resume(intf); 3978 } 3979 3980 static const struct usb_device_id products[] = { 3981 { 3982 /* LAN7800 USB Gigabit Ethernet Device */ 3983 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID), 3984 }, 3985 { 3986 /* LAN7850 USB Gigabit Ethernet Device */ 3987 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), 3988 }, 3989 { 3990 /* LAN7801 USB Gigabit Ethernet Device */ 3991 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID), 3992 }, 3993 {}, 3994 }; 3995 MODULE_DEVICE_TABLE(usb, products); 3996 3997 static struct usb_driver lan78xx_driver = { 3998 .name = DRIVER_NAME, 3999 .id_table = products, 4000 .probe = lan78xx_probe, 4001 .disconnect = lan78xx_disconnect, 4002 .suspend = lan78xx_suspend, 4003 .resume = lan78xx_resume, 4004 .reset_resume = lan78xx_reset_resume, 4005 .supports_autosuspend = 1, 4006 .disable_hub_initiated_lpm = 1, 4007 }; 4008 4009 module_usb_driver(lan78xx_driver); 4010 4011 MODULE_AUTHOR(DRIVER_AUTHOR); 4012 MODULE_DESCRIPTION(DRIVER_DESC); 4013 MODULE_LICENSE("GPL"); 4014