1 /* 2 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved. 3 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com> 4 * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com> 5 * 6 * Derived from Intel e1000 driver 7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the Free 11 * Software Foundation; either version 2 of the License, or (at your option) 12 * any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but WITHOUT 15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 17 * more details. 18 * 19 * You should have received a copy of the GNU General Public License along with 20 * this program; if not, write to the Free Software Foundation, Inc., 59 21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * 23 * The full GNU General Public License is included in this distribution in the 24 * file called COPYING. 25 * 26 * Contact Information: 27 * Xiong Huang <xiong.huang@atheros.com> 28 * Jie Yang <jie.yang@atheros.com> 29 * Chris Snook <csnook@redhat.com> 30 * Jay Cliburn <jcliburn@gmail.com> 31 * 32 * This version is adapted from the Attansic reference driver. 33 * 34 * TODO: 35 * Add more ethtool functions. 36 * Fix abstruse irq enable/disable condition described here: 37 * http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2 38 * 39 * NEEDS TESTING: 40 * VLAN 41 * multicast 42 * promiscuous mode 43 * interrupt coalescing 44 * SMP torture testing 45 */ 46 47 #include <linux/atomic.h> 48 #include <asm/byteorder.h> 49 50 #include <linux/compiler.h> 51 #include <linux/crc32.h> 52 #include <linux/delay.h> 53 #include <linux/dma-mapping.h> 54 #include <linux/etherdevice.h> 55 #include <linux/hardirq.h> 56 #include <linux/if_ether.h> 57 #include <linux/if_vlan.h> 58 #include <linux/in.h> 59 #include <linux/interrupt.h> 60 #include <linux/ip.h> 61 #include <linux/irqflags.h> 62 #include <linux/irqreturn.h> 63 #include <linux/jiffies.h> 64 #include <linux/mii.h> 65 #include <linux/module.h> 66 #include <linux/moduleparam.h> 67 #include <linux/net.h> 68 #include <linux/netdevice.h> 69 #include <linux/pci.h> 70 #include <linux/pci_ids.h> 71 #include <linux/pm.h> 72 #include <linux/skbuff.h> 73 #include <linux/slab.h> 74 #include <linux/spinlock.h> 75 #include <linux/string.h> 76 #include <linux/tcp.h> 77 #include <linux/timer.h> 78 #include <linux/types.h> 79 #include <linux/workqueue.h> 80 81 #include <net/checksum.h> 82 83 #include "atl1.h" 84 85 #define ATLX_DRIVER_VERSION "2.1.3" 86 MODULE_AUTHOR("Xiong Huang <xiong.huang@atheros.com>, " 87 "Chris Snook <csnook@redhat.com>, " 88 "Jay Cliburn <jcliburn@gmail.com>"); 89 MODULE_LICENSE("GPL"); 90 MODULE_VERSION(ATLX_DRIVER_VERSION); 91 92 /* Temporary hack for merging atl1 and atl2 */ 93 #include "atlx.c" 94 95 static const struct ethtool_ops atl1_ethtool_ops; 96 97 /* 98 * This is the only thing that needs to be changed to adjust the 99 * maximum number of ports that the driver can manage. 100 */ 101 #define ATL1_MAX_NIC 4 102 103 #define OPTION_UNSET -1 104 #define OPTION_DISABLED 0 105 #define OPTION_ENABLED 1 106 107 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET } 108 109 /* 110 * Interrupt Moderate Timer in units of 2 us 111 * 112 * Valid Range: 10-65535 113 * 114 * Default Value: 100 (200us) 115 */ 116 static int int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT; 117 static unsigned int num_int_mod_timer; 118 module_param_array_named(int_mod_timer, int_mod_timer, int, 119 &num_int_mod_timer, 0); 120 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer"); 121 122 #define DEFAULT_INT_MOD_CNT 100 /* 200us */ 123 #define MAX_INT_MOD_CNT 65000 124 #define MIN_INT_MOD_CNT 50 125 126 struct atl1_option { 127 enum { enable_option, range_option, list_option } type; 128 char *name; 129 char *err; 130 int def; 131 union { 132 struct { /* range_option info */ 133 int min; 134 int max; 135 } r; 136 struct { /* list_option info */ 137 int nr; 138 struct atl1_opt_list { 139 int i; 140 char *str; 141 } *p; 142 } l; 143 } arg; 144 }; 145 146 static int atl1_validate_option(int *value, struct atl1_option *opt, 147 struct pci_dev *pdev) 148 { 149 if (*value == OPTION_UNSET) { 150 *value = opt->def; 151 return 0; 152 } 153 154 switch (opt->type) { 155 case enable_option: 156 switch (*value) { 157 case OPTION_ENABLED: 158 dev_info(&pdev->dev, "%s enabled\n", opt->name); 159 return 0; 160 case OPTION_DISABLED: 161 dev_info(&pdev->dev, "%s disabled\n", opt->name); 162 return 0; 163 } 164 break; 165 case range_option: 166 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) { 167 dev_info(&pdev->dev, "%s set to %i\n", opt->name, 168 *value); 169 return 0; 170 } 171 break; 172 case list_option:{ 173 int i; 174 struct atl1_opt_list *ent; 175 176 for (i = 0; i < opt->arg.l.nr; i++) { 177 ent = &opt->arg.l.p[i]; 178 if (*value == ent->i) { 179 if (ent->str[0] != '\0') 180 dev_info(&pdev->dev, "%s\n", 181 ent->str); 182 return 0; 183 } 184 } 185 } 186 break; 187 188 default: 189 break; 190 } 191 192 dev_info(&pdev->dev, "invalid %s specified (%i) %s\n", 193 opt->name, *value, opt->err); 194 *value = opt->def; 195 return -1; 196 } 197 198 /** 199 * atl1_check_options - Range Checking for Command Line Parameters 200 * @adapter: board private structure 201 * 202 * This routine checks all command line parameters for valid user 203 * input. If an invalid value is given, or if no user specified 204 * value exists, a default value is used. The final value is stored 205 * in a variable in the adapter structure. 206 */ 207 static void atl1_check_options(struct atl1_adapter *adapter) 208 { 209 struct pci_dev *pdev = adapter->pdev; 210 int bd = adapter->bd_number; 211 if (bd >= ATL1_MAX_NIC) { 212 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd); 213 dev_notice(&pdev->dev, "using defaults for all values\n"); 214 } 215 { /* Interrupt Moderate Timer */ 216 struct atl1_option opt = { 217 .type = range_option, 218 .name = "Interrupt Moderator Timer", 219 .err = "using default of " 220 __MODULE_STRING(DEFAULT_INT_MOD_CNT), 221 .def = DEFAULT_INT_MOD_CNT, 222 .arg = {.r = {.min = MIN_INT_MOD_CNT, 223 .max = MAX_INT_MOD_CNT} } 224 }; 225 int val; 226 if (num_int_mod_timer > bd) { 227 val = int_mod_timer[bd]; 228 atl1_validate_option(&val, &opt, pdev); 229 adapter->imt = (u16) val; 230 } else 231 adapter->imt = (u16) (opt.def); 232 } 233 } 234 235 /* 236 * atl1_pci_tbl - PCI Device ID Table 237 */ 238 static DEFINE_PCI_DEVICE_TABLE(atl1_pci_tbl) = { 239 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)}, 240 /* required last entry */ 241 {0,} 242 }; 243 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl); 244 245 static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | 246 NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; 247 248 static int debug = -1; 249 module_param(debug, int, 0); 250 MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)"); 251 252 /* 253 * Reset the transmit and receive units; mask and clear all interrupts. 254 * hw - Struct containing variables accessed by shared code 255 * return : 0 or idle status (if error) 256 */ 257 static s32 atl1_reset_hw(struct atl1_hw *hw) 258 { 259 struct pci_dev *pdev = hw->back->pdev; 260 struct atl1_adapter *adapter = hw->back; 261 u32 icr; 262 int i; 263 264 /* 265 * Clear Interrupt mask to stop board from generating 266 * interrupts & Clear any pending interrupt events 267 */ 268 /* 269 * atlx_irq_disable(adapter); 270 * iowrite32(0xffffffff, hw->hw_addr + REG_ISR); 271 */ 272 273 /* 274 * Issue Soft Reset to the MAC. This will reset the chip's 275 * transmit, receive, DMA. It will not effect 276 * the current PCI configuration. The global reset bit is self- 277 * clearing, and should clear within a microsecond. 278 */ 279 iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL); 280 ioread32(hw->hw_addr + REG_MASTER_CTRL); 281 282 iowrite16(1, hw->hw_addr + REG_PHY_ENABLE); 283 ioread16(hw->hw_addr + REG_PHY_ENABLE); 284 285 /* delay about 1ms */ 286 msleep(1); 287 288 /* Wait at least 10ms for All module to be Idle */ 289 for (i = 0; i < 10; i++) { 290 icr = ioread32(hw->hw_addr + REG_IDLE_STATUS); 291 if (!icr) 292 break; 293 /* delay 1 ms */ 294 msleep(1); 295 /* FIXME: still the right way to do this? */ 296 cpu_relax(); 297 } 298 299 if (icr) { 300 if (netif_msg_hw(adapter)) 301 dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr); 302 return icr; 303 } 304 305 return 0; 306 } 307 308 /* function about EEPROM 309 * 310 * check_eeprom_exist 311 * return 0 if eeprom exist 312 */ 313 static int atl1_check_eeprom_exist(struct atl1_hw *hw) 314 { 315 u32 value; 316 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL); 317 if (value & SPI_FLASH_CTRL_EN_VPD) { 318 value &= ~SPI_FLASH_CTRL_EN_VPD; 319 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL); 320 } 321 322 value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST); 323 return ((value & 0xFF00) == 0x6C00) ? 0 : 1; 324 } 325 326 static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value) 327 { 328 int i; 329 u32 control; 330 331 if (offset & 3) 332 /* address do not align */ 333 return false; 334 335 iowrite32(0, hw->hw_addr + REG_VPD_DATA); 336 control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT; 337 iowrite32(control, hw->hw_addr + REG_VPD_CAP); 338 ioread32(hw->hw_addr + REG_VPD_CAP); 339 340 for (i = 0; i < 10; i++) { 341 msleep(2); 342 control = ioread32(hw->hw_addr + REG_VPD_CAP); 343 if (control & VPD_CAP_VPD_FLAG) 344 break; 345 } 346 if (control & VPD_CAP_VPD_FLAG) { 347 *p_value = ioread32(hw->hw_addr + REG_VPD_DATA); 348 return true; 349 } 350 /* timeout */ 351 return false; 352 } 353 354 /* 355 * Reads the value from a PHY register 356 * hw - Struct containing variables accessed by shared code 357 * reg_addr - address of the PHY register to read 358 */ 359 static s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data) 360 { 361 u32 val; 362 int i; 363 364 val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT | 365 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 << 366 MDIO_CLK_SEL_SHIFT; 367 iowrite32(val, hw->hw_addr + REG_MDIO_CTRL); 368 ioread32(hw->hw_addr + REG_MDIO_CTRL); 369 370 for (i = 0; i < MDIO_WAIT_TIMES; i++) { 371 udelay(2); 372 val = ioread32(hw->hw_addr + REG_MDIO_CTRL); 373 if (!(val & (MDIO_START | MDIO_BUSY))) 374 break; 375 } 376 if (!(val & (MDIO_START | MDIO_BUSY))) { 377 *phy_data = (u16) val; 378 return 0; 379 } 380 return ATLX_ERR_PHY; 381 } 382 383 #define CUSTOM_SPI_CS_SETUP 2 384 #define CUSTOM_SPI_CLK_HI 2 385 #define CUSTOM_SPI_CLK_LO 2 386 #define CUSTOM_SPI_CS_HOLD 2 387 #define CUSTOM_SPI_CS_HI 3 388 389 static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf) 390 { 391 int i; 392 u32 value; 393 394 iowrite32(0, hw->hw_addr + REG_SPI_DATA); 395 iowrite32(addr, hw->hw_addr + REG_SPI_ADDR); 396 397 value = SPI_FLASH_CTRL_WAIT_READY | 398 (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) << 399 SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI & 400 SPI_FLASH_CTRL_CLK_HI_MASK) << 401 SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO & 402 SPI_FLASH_CTRL_CLK_LO_MASK) << 403 SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD & 404 SPI_FLASH_CTRL_CS_HOLD_MASK) << 405 SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI & 406 SPI_FLASH_CTRL_CS_HI_MASK) << 407 SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) << 408 SPI_FLASH_CTRL_INS_SHIFT; 409 410 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL); 411 412 value |= SPI_FLASH_CTRL_START; 413 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL); 414 ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL); 415 416 for (i = 0; i < 10; i++) { 417 msleep(1); 418 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL); 419 if (!(value & SPI_FLASH_CTRL_START)) 420 break; 421 } 422 423 if (value & SPI_FLASH_CTRL_START) 424 return false; 425 426 *buf = ioread32(hw->hw_addr + REG_SPI_DATA); 427 428 return true; 429 } 430 431 /* 432 * get_permanent_address 433 * return 0 if get valid mac address, 434 */ 435 static int atl1_get_permanent_address(struct atl1_hw *hw) 436 { 437 u32 addr[2]; 438 u32 i, control; 439 u16 reg; 440 u8 eth_addr[ETH_ALEN]; 441 bool key_valid; 442 443 if (is_valid_ether_addr(hw->perm_mac_addr)) 444 return 0; 445 446 /* init */ 447 addr[0] = addr[1] = 0; 448 449 if (!atl1_check_eeprom_exist(hw)) { 450 reg = 0; 451 key_valid = false; 452 /* Read out all EEPROM content */ 453 i = 0; 454 while (1) { 455 if (atl1_read_eeprom(hw, i + 0x100, &control)) { 456 if (key_valid) { 457 if (reg == REG_MAC_STA_ADDR) 458 addr[0] = control; 459 else if (reg == (REG_MAC_STA_ADDR + 4)) 460 addr[1] = control; 461 key_valid = false; 462 } else if ((control & 0xff) == 0x5A) { 463 key_valid = true; 464 reg = (u16) (control >> 16); 465 } else 466 break; 467 } else 468 /* read error */ 469 break; 470 i += 4; 471 } 472 473 *(u32 *) ð_addr[2] = swab32(addr[0]); 474 *(u16 *) ð_addr[0] = swab16(*(u16 *) &addr[1]); 475 if (is_valid_ether_addr(eth_addr)) { 476 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN); 477 return 0; 478 } 479 } 480 481 /* see if SPI FLAGS exist ? */ 482 addr[0] = addr[1] = 0; 483 reg = 0; 484 key_valid = false; 485 i = 0; 486 while (1) { 487 if (atl1_spi_read(hw, i + 0x1f000, &control)) { 488 if (key_valid) { 489 if (reg == REG_MAC_STA_ADDR) 490 addr[0] = control; 491 else if (reg == (REG_MAC_STA_ADDR + 4)) 492 addr[1] = control; 493 key_valid = false; 494 } else if ((control & 0xff) == 0x5A) { 495 key_valid = true; 496 reg = (u16) (control >> 16); 497 } else 498 /* data end */ 499 break; 500 } else 501 /* read error */ 502 break; 503 i += 4; 504 } 505 506 *(u32 *) ð_addr[2] = swab32(addr[0]); 507 *(u16 *) ð_addr[0] = swab16(*(u16 *) &addr[1]); 508 if (is_valid_ether_addr(eth_addr)) { 509 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN); 510 return 0; 511 } 512 513 /* 514 * On some motherboards, the MAC address is written by the 515 * BIOS directly to the MAC register during POST, and is 516 * not stored in eeprom. If all else thus far has failed 517 * to fetch the permanent MAC address, try reading it directly. 518 */ 519 addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR); 520 addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4)); 521 *(u32 *) ð_addr[2] = swab32(addr[0]); 522 *(u16 *) ð_addr[0] = swab16(*(u16 *) &addr[1]); 523 if (is_valid_ether_addr(eth_addr)) { 524 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN); 525 return 0; 526 } 527 528 return 1; 529 } 530 531 /* 532 * Reads the adapter's MAC address from the EEPROM 533 * hw - Struct containing variables accessed by shared code 534 */ 535 static s32 atl1_read_mac_addr(struct atl1_hw *hw) 536 { 537 s32 ret = 0; 538 u16 i; 539 540 if (atl1_get_permanent_address(hw)) { 541 eth_random_addr(hw->perm_mac_addr); 542 ret = 1; 543 } 544 545 for (i = 0; i < ETH_ALEN; i++) 546 hw->mac_addr[i] = hw->perm_mac_addr[i]; 547 return ret; 548 } 549 550 /* 551 * Hashes an address to determine its location in the multicast table 552 * hw - Struct containing variables accessed by shared code 553 * mc_addr - the multicast address to hash 554 * 555 * atl1_hash_mc_addr 556 * purpose 557 * set hash value for a multicast address 558 * hash calcu processing : 559 * 1. calcu 32bit CRC for multicast address 560 * 2. reverse crc with MSB to LSB 561 */ 562 static u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr) 563 { 564 u32 crc32, value = 0; 565 int i; 566 567 crc32 = ether_crc_le(6, mc_addr); 568 for (i = 0; i < 32; i++) 569 value |= (((crc32 >> i) & 1) << (31 - i)); 570 571 return value; 572 } 573 574 /* 575 * Sets the bit in the multicast table corresponding to the hash value. 576 * hw - Struct containing variables accessed by shared code 577 * hash_value - Multicast address hash value 578 */ 579 static void atl1_hash_set(struct atl1_hw *hw, u32 hash_value) 580 { 581 u32 hash_bit, hash_reg; 582 u32 mta; 583 584 /* 585 * The HASH Table is a register array of 2 32-bit registers. 586 * It is treated like an array of 64 bits. We want to set 587 * bit BitArray[hash_value]. So we figure out what register 588 * the bit is in, read it, OR in the new bit, then write 589 * back the new value. The register is determined by the 590 * upper 7 bits of the hash value and the bit within that 591 * register are determined by the lower 5 bits of the value. 592 */ 593 hash_reg = (hash_value >> 31) & 0x1; 594 hash_bit = (hash_value >> 26) & 0x1F; 595 mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2)); 596 mta |= (1 << hash_bit); 597 iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2)); 598 } 599 600 /* 601 * Writes a value to a PHY register 602 * hw - Struct containing variables accessed by shared code 603 * reg_addr - address of the PHY register to write 604 * data - data to write to the PHY 605 */ 606 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data) 607 { 608 int i; 609 u32 val; 610 611 val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT | 612 (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT | 613 MDIO_SUP_PREAMBLE | 614 MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT; 615 iowrite32(val, hw->hw_addr + REG_MDIO_CTRL); 616 ioread32(hw->hw_addr + REG_MDIO_CTRL); 617 618 for (i = 0; i < MDIO_WAIT_TIMES; i++) { 619 udelay(2); 620 val = ioread32(hw->hw_addr + REG_MDIO_CTRL); 621 if (!(val & (MDIO_START | MDIO_BUSY))) 622 break; 623 } 624 625 if (!(val & (MDIO_START | MDIO_BUSY))) 626 return 0; 627 628 return ATLX_ERR_PHY; 629 } 630 631 /* 632 * Make L001's PHY out of Power Saving State (bug) 633 * hw - Struct containing variables accessed by shared code 634 * when power on, L001's PHY always on Power saving State 635 * (Gigabit Link forbidden) 636 */ 637 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw) 638 { 639 s32 ret; 640 ret = atl1_write_phy_reg(hw, 29, 0x0029); 641 if (ret) 642 return ret; 643 return atl1_write_phy_reg(hw, 30, 0); 644 } 645 646 /* 647 * Resets the PHY and make all config validate 648 * hw - Struct containing variables accessed by shared code 649 * 650 * Sets bit 15 and 12 of the MII Control regiser (for F001 bug) 651 */ 652 static s32 atl1_phy_reset(struct atl1_hw *hw) 653 { 654 struct pci_dev *pdev = hw->back->pdev; 655 struct atl1_adapter *adapter = hw->back; 656 s32 ret_val; 657 u16 phy_data; 658 659 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 660 hw->media_type == MEDIA_TYPE_1000M_FULL) 661 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN; 662 else { 663 switch (hw->media_type) { 664 case MEDIA_TYPE_100M_FULL: 665 phy_data = 666 MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 | 667 MII_CR_RESET; 668 break; 669 case MEDIA_TYPE_100M_HALF: 670 phy_data = MII_CR_SPEED_100 | MII_CR_RESET; 671 break; 672 case MEDIA_TYPE_10M_FULL: 673 phy_data = 674 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET; 675 break; 676 default: 677 /* MEDIA_TYPE_10M_HALF: */ 678 phy_data = MII_CR_SPEED_10 | MII_CR_RESET; 679 break; 680 } 681 } 682 683 ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data); 684 if (ret_val) { 685 u32 val; 686 int i; 687 /* pcie serdes link may be down! */ 688 if (netif_msg_hw(adapter)) 689 dev_dbg(&pdev->dev, "pcie phy link down\n"); 690 691 for (i = 0; i < 25; i++) { 692 msleep(1); 693 val = ioread32(hw->hw_addr + REG_MDIO_CTRL); 694 if (!(val & (MDIO_START | MDIO_BUSY))) 695 break; 696 } 697 698 if ((val & (MDIO_START | MDIO_BUSY)) != 0) { 699 if (netif_msg_hw(adapter)) 700 dev_warn(&pdev->dev, 701 "pcie link down at least 25ms\n"); 702 return ret_val; 703 } 704 } 705 return 0; 706 } 707 708 /* 709 * Configures PHY autoneg and flow control advertisement settings 710 * hw - Struct containing variables accessed by shared code 711 */ 712 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw) 713 { 714 s32 ret_val; 715 s16 mii_autoneg_adv_reg; 716 s16 mii_1000t_ctrl_reg; 717 718 /* Read the MII Auto-Neg Advertisement Register (Address 4). */ 719 mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK; 720 721 /* Read the MII 1000Base-T Control Register (Address 9). */ 722 mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK; 723 724 /* 725 * First we clear all the 10/100 mb speed bits in the Auto-Neg 726 * Advertisement Register (Address 4) and the 1000 mb speed bits in 727 * the 1000Base-T Control Register (Address 9). 728 */ 729 mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK; 730 mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK; 731 732 /* 733 * Need to parse media_type and set up 734 * the appropriate PHY registers. 735 */ 736 switch (hw->media_type) { 737 case MEDIA_TYPE_AUTO_SENSOR: 738 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS | 739 MII_AR_10T_FD_CAPS | 740 MII_AR_100TX_HD_CAPS | 741 MII_AR_100TX_FD_CAPS); 742 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS; 743 break; 744 745 case MEDIA_TYPE_1000M_FULL: 746 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS; 747 break; 748 749 case MEDIA_TYPE_100M_FULL: 750 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS; 751 break; 752 753 case MEDIA_TYPE_100M_HALF: 754 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS; 755 break; 756 757 case MEDIA_TYPE_10M_FULL: 758 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS; 759 break; 760 761 default: 762 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS; 763 break; 764 } 765 766 /* flow control fixed to enable all */ 767 mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE); 768 769 hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg; 770 hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg; 771 772 ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg); 773 if (ret_val) 774 return ret_val; 775 776 ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg); 777 if (ret_val) 778 return ret_val; 779 780 return 0; 781 } 782 783 /* 784 * Configures link settings. 785 * hw - Struct containing variables accessed by shared code 786 * Assumes the hardware has previously been reset and the 787 * transmitter and receiver are not enabled. 788 */ 789 static s32 atl1_setup_link(struct atl1_hw *hw) 790 { 791 struct pci_dev *pdev = hw->back->pdev; 792 struct atl1_adapter *adapter = hw->back; 793 s32 ret_val; 794 795 /* 796 * Options: 797 * PHY will advertise value(s) parsed from 798 * autoneg_advertised and fc 799 * no matter what autoneg is , We will not wait link result. 800 */ 801 ret_val = atl1_phy_setup_autoneg_adv(hw); 802 if (ret_val) { 803 if (netif_msg_link(adapter)) 804 dev_dbg(&pdev->dev, 805 "error setting up autonegotiation\n"); 806 return ret_val; 807 } 808 /* SW.Reset , En-Auto-Neg if needed */ 809 ret_val = atl1_phy_reset(hw); 810 if (ret_val) { 811 if (netif_msg_link(adapter)) 812 dev_dbg(&pdev->dev, "error resetting phy\n"); 813 return ret_val; 814 } 815 hw->phy_configured = true; 816 return ret_val; 817 } 818 819 static void atl1_init_flash_opcode(struct atl1_hw *hw) 820 { 821 if (hw->flash_vendor >= ARRAY_SIZE(flash_table)) 822 /* Atmel */ 823 hw->flash_vendor = 0; 824 825 /* Init OP table */ 826 iowrite8(flash_table[hw->flash_vendor].cmd_program, 827 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM); 828 iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase, 829 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE); 830 iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase, 831 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE); 832 iowrite8(flash_table[hw->flash_vendor].cmd_rdid, 833 hw->hw_addr + REG_SPI_FLASH_OP_RDID); 834 iowrite8(flash_table[hw->flash_vendor].cmd_wren, 835 hw->hw_addr + REG_SPI_FLASH_OP_WREN); 836 iowrite8(flash_table[hw->flash_vendor].cmd_rdsr, 837 hw->hw_addr + REG_SPI_FLASH_OP_RDSR); 838 iowrite8(flash_table[hw->flash_vendor].cmd_wrsr, 839 hw->hw_addr + REG_SPI_FLASH_OP_WRSR); 840 iowrite8(flash_table[hw->flash_vendor].cmd_read, 841 hw->hw_addr + REG_SPI_FLASH_OP_READ); 842 } 843 844 /* 845 * Performs basic configuration of the adapter. 846 * hw - Struct containing variables accessed by shared code 847 * Assumes that the controller has previously been reset and is in a 848 * post-reset uninitialized state. Initializes multicast table, 849 * and Calls routines to setup link 850 * Leaves the transmit and receive units disabled and uninitialized. 851 */ 852 static s32 atl1_init_hw(struct atl1_hw *hw) 853 { 854 u32 ret_val = 0; 855 856 /* Zero out the Multicast HASH table */ 857 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE); 858 /* clear the old settings from the multicast hash table */ 859 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2)); 860 861 atl1_init_flash_opcode(hw); 862 863 if (!hw->phy_configured) { 864 /* enable GPHY LinkChange Interrupt */ 865 ret_val = atl1_write_phy_reg(hw, 18, 0xC00); 866 if (ret_val) 867 return ret_val; 868 /* make PHY out of power-saving state */ 869 ret_val = atl1_phy_leave_power_saving(hw); 870 if (ret_val) 871 return ret_val; 872 /* Call a subroutine to configure the link */ 873 ret_val = atl1_setup_link(hw); 874 } 875 return ret_val; 876 } 877 878 /* 879 * Detects the current speed and duplex settings of the hardware. 880 * hw - Struct containing variables accessed by shared code 881 * speed - Speed of the connection 882 * duplex - Duplex setting of the connection 883 */ 884 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex) 885 { 886 struct pci_dev *pdev = hw->back->pdev; 887 struct atl1_adapter *adapter = hw->back; 888 s32 ret_val; 889 u16 phy_data; 890 891 /* ; --- Read PHY Specific Status Register (17) */ 892 ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data); 893 if (ret_val) 894 return ret_val; 895 896 if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED)) 897 return ATLX_ERR_PHY_RES; 898 899 switch (phy_data & MII_ATLX_PSSR_SPEED) { 900 case MII_ATLX_PSSR_1000MBS: 901 *speed = SPEED_1000; 902 break; 903 case MII_ATLX_PSSR_100MBS: 904 *speed = SPEED_100; 905 break; 906 case MII_ATLX_PSSR_10MBS: 907 *speed = SPEED_10; 908 break; 909 default: 910 if (netif_msg_hw(adapter)) 911 dev_dbg(&pdev->dev, "error getting speed\n"); 912 return ATLX_ERR_PHY_SPEED; 913 break; 914 } 915 if (phy_data & MII_ATLX_PSSR_DPLX) 916 *duplex = FULL_DUPLEX; 917 else 918 *duplex = HALF_DUPLEX; 919 920 return 0; 921 } 922 923 static void atl1_set_mac_addr(struct atl1_hw *hw) 924 { 925 u32 value; 926 /* 927 * 00-0B-6A-F6-00-DC 928 * 0: 6AF600DC 1: 000B 929 * low dword 930 */ 931 value = (((u32) hw->mac_addr[2]) << 24) | 932 (((u32) hw->mac_addr[3]) << 16) | 933 (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5])); 934 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR); 935 /* high dword */ 936 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1])); 937 iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2)); 938 } 939 940 /** 941 * atl1_sw_init - Initialize general software structures (struct atl1_adapter) 942 * @adapter: board private structure to initialize 943 * 944 * atl1_sw_init initializes the Adapter private data structure. 945 * Fields are initialized based on PCI device information and 946 * OS network device settings (MTU size). 947 */ 948 static int atl1_sw_init(struct atl1_adapter *adapter) 949 { 950 struct atl1_hw *hw = &adapter->hw; 951 struct net_device *netdev = adapter->netdev; 952 953 hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 954 hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; 955 956 adapter->wol = 0; 957 device_set_wakeup_enable(&adapter->pdev->dev, false); 958 adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7; 959 adapter->ict = 50000; /* 100ms */ 960 adapter->link_speed = SPEED_0; /* hardware init */ 961 adapter->link_duplex = FULL_DUPLEX; 962 963 hw->phy_configured = false; 964 hw->preamble_len = 7; 965 hw->ipgt = 0x60; 966 hw->min_ifg = 0x50; 967 hw->ipgr1 = 0x40; 968 hw->ipgr2 = 0x60; 969 hw->max_retry = 0xf; 970 hw->lcol = 0x37; 971 hw->jam_ipg = 7; 972 hw->rfd_burst = 8; 973 hw->rrd_burst = 8; 974 hw->rfd_fetch_gap = 1; 975 hw->rx_jumbo_th = adapter->rx_buffer_len / 8; 976 hw->rx_jumbo_lkah = 1; 977 hw->rrd_ret_timer = 16; 978 hw->tpd_burst = 4; 979 hw->tpd_fetch_th = 16; 980 hw->txf_burst = 0x100; 981 hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3; 982 hw->tpd_fetch_gap = 1; 983 hw->rcb_value = atl1_rcb_64; 984 hw->dma_ord = atl1_dma_ord_enh; 985 hw->dmar_block = atl1_dma_req_256; 986 hw->dmaw_block = atl1_dma_req_256; 987 hw->cmb_rrd = 4; 988 hw->cmb_tpd = 4; 989 hw->cmb_rx_timer = 1; /* about 2us */ 990 hw->cmb_tx_timer = 1; /* about 2us */ 991 hw->smb_timer = 100000; /* about 200ms */ 992 993 spin_lock_init(&adapter->lock); 994 spin_lock_init(&adapter->mb_lock); 995 996 return 0; 997 } 998 999 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num) 1000 { 1001 struct atl1_adapter *adapter = netdev_priv(netdev); 1002 u16 result; 1003 1004 atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result); 1005 1006 return result; 1007 } 1008 1009 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num, 1010 int val) 1011 { 1012 struct atl1_adapter *adapter = netdev_priv(netdev); 1013 1014 atl1_write_phy_reg(&adapter->hw, reg_num, val); 1015 } 1016 1017 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 1018 { 1019 struct atl1_adapter *adapter = netdev_priv(netdev); 1020 unsigned long flags; 1021 int retval; 1022 1023 if (!netif_running(netdev)) 1024 return -EINVAL; 1025 1026 spin_lock_irqsave(&adapter->lock, flags); 1027 retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); 1028 spin_unlock_irqrestore(&adapter->lock, flags); 1029 1030 return retval; 1031 } 1032 1033 /** 1034 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources 1035 * @adapter: board private structure 1036 * 1037 * Return 0 on success, negative on failure 1038 */ 1039 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter) 1040 { 1041 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 1042 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1043 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; 1044 struct atl1_ring_header *ring_header = &adapter->ring_header; 1045 struct pci_dev *pdev = adapter->pdev; 1046 int size; 1047 u8 offset = 0; 1048 1049 size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count); 1050 tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); 1051 if (unlikely(!tpd_ring->buffer_info)) { 1052 if (netif_msg_drv(adapter)) 1053 dev_err(&pdev->dev, "kzalloc failed , size = D%d\n", 1054 size); 1055 goto err_nomem; 1056 } 1057 rfd_ring->buffer_info = 1058 (tpd_ring->buffer_info + tpd_ring->count); 1059 1060 /* 1061 * real ring DMA buffer 1062 * each ring/block may need up to 8 bytes for alignment, hence the 1063 * additional 40 bytes tacked onto the end. 1064 */ 1065 ring_header->size = size = 1066 sizeof(struct tx_packet_desc) * tpd_ring->count 1067 + sizeof(struct rx_free_desc) * rfd_ring->count 1068 + sizeof(struct rx_return_desc) * rrd_ring->count 1069 + sizeof(struct coals_msg_block) 1070 + sizeof(struct stats_msg_block) 1071 + 40; 1072 1073 ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, 1074 &ring_header->dma); 1075 if (unlikely(!ring_header->desc)) { 1076 if (netif_msg_drv(adapter)) 1077 dev_err(&pdev->dev, "pci_alloc_consistent failed\n"); 1078 goto err_nomem; 1079 } 1080 1081 memset(ring_header->desc, 0, ring_header->size); 1082 1083 /* init TPD ring */ 1084 tpd_ring->dma = ring_header->dma; 1085 offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0; 1086 tpd_ring->dma += offset; 1087 tpd_ring->desc = (u8 *) ring_header->desc + offset; 1088 tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count; 1089 1090 /* init RFD ring */ 1091 rfd_ring->dma = tpd_ring->dma + tpd_ring->size; 1092 offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0; 1093 rfd_ring->dma += offset; 1094 rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset); 1095 rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count; 1096 1097 1098 /* init RRD ring */ 1099 rrd_ring->dma = rfd_ring->dma + rfd_ring->size; 1100 offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0; 1101 rrd_ring->dma += offset; 1102 rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset); 1103 rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count; 1104 1105 1106 /* init CMB */ 1107 adapter->cmb.dma = rrd_ring->dma + rrd_ring->size; 1108 offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0; 1109 adapter->cmb.dma += offset; 1110 adapter->cmb.cmb = (struct coals_msg_block *) 1111 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset)); 1112 1113 /* init SMB */ 1114 adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block); 1115 offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0; 1116 adapter->smb.dma += offset; 1117 adapter->smb.smb = (struct stats_msg_block *) 1118 ((u8 *) adapter->cmb.cmb + 1119 (sizeof(struct coals_msg_block) + offset)); 1120 1121 return 0; 1122 1123 err_nomem: 1124 kfree(tpd_ring->buffer_info); 1125 return -ENOMEM; 1126 } 1127 1128 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter) 1129 { 1130 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 1131 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1132 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; 1133 1134 atomic_set(&tpd_ring->next_to_use, 0); 1135 atomic_set(&tpd_ring->next_to_clean, 0); 1136 1137 rfd_ring->next_to_clean = 0; 1138 atomic_set(&rfd_ring->next_to_use, 0); 1139 1140 rrd_ring->next_to_use = 0; 1141 atomic_set(&rrd_ring->next_to_clean, 0); 1142 } 1143 1144 /** 1145 * atl1_clean_rx_ring - Free RFD Buffers 1146 * @adapter: board private structure 1147 */ 1148 static void atl1_clean_rx_ring(struct atl1_adapter *adapter) 1149 { 1150 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1151 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; 1152 struct atl1_buffer *buffer_info; 1153 struct pci_dev *pdev = adapter->pdev; 1154 unsigned long size; 1155 unsigned int i; 1156 1157 /* Free all the Rx ring sk_buffs */ 1158 for (i = 0; i < rfd_ring->count; i++) { 1159 buffer_info = &rfd_ring->buffer_info[i]; 1160 if (buffer_info->dma) { 1161 pci_unmap_page(pdev, buffer_info->dma, 1162 buffer_info->length, PCI_DMA_FROMDEVICE); 1163 buffer_info->dma = 0; 1164 } 1165 if (buffer_info->skb) { 1166 dev_kfree_skb(buffer_info->skb); 1167 buffer_info->skb = NULL; 1168 } 1169 } 1170 1171 size = sizeof(struct atl1_buffer) * rfd_ring->count; 1172 memset(rfd_ring->buffer_info, 0, size); 1173 1174 /* Zero out the descriptor ring */ 1175 memset(rfd_ring->desc, 0, rfd_ring->size); 1176 1177 rfd_ring->next_to_clean = 0; 1178 atomic_set(&rfd_ring->next_to_use, 0); 1179 1180 rrd_ring->next_to_use = 0; 1181 atomic_set(&rrd_ring->next_to_clean, 0); 1182 } 1183 1184 /** 1185 * atl1_clean_tx_ring - Free Tx Buffers 1186 * @adapter: board private structure 1187 */ 1188 static void atl1_clean_tx_ring(struct atl1_adapter *adapter) 1189 { 1190 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 1191 struct atl1_buffer *buffer_info; 1192 struct pci_dev *pdev = adapter->pdev; 1193 unsigned long size; 1194 unsigned int i; 1195 1196 /* Free all the Tx ring sk_buffs */ 1197 for (i = 0; i < tpd_ring->count; i++) { 1198 buffer_info = &tpd_ring->buffer_info[i]; 1199 if (buffer_info->dma) { 1200 pci_unmap_page(pdev, buffer_info->dma, 1201 buffer_info->length, PCI_DMA_TODEVICE); 1202 buffer_info->dma = 0; 1203 } 1204 } 1205 1206 for (i = 0; i < tpd_ring->count; i++) { 1207 buffer_info = &tpd_ring->buffer_info[i]; 1208 if (buffer_info->skb) { 1209 dev_kfree_skb_any(buffer_info->skb); 1210 buffer_info->skb = NULL; 1211 } 1212 } 1213 1214 size = sizeof(struct atl1_buffer) * tpd_ring->count; 1215 memset(tpd_ring->buffer_info, 0, size); 1216 1217 /* Zero out the descriptor ring */ 1218 memset(tpd_ring->desc, 0, tpd_ring->size); 1219 1220 atomic_set(&tpd_ring->next_to_use, 0); 1221 atomic_set(&tpd_ring->next_to_clean, 0); 1222 } 1223 1224 /** 1225 * atl1_free_ring_resources - Free Tx / RX descriptor Resources 1226 * @adapter: board private structure 1227 * 1228 * Free all transmit software resources 1229 */ 1230 static void atl1_free_ring_resources(struct atl1_adapter *adapter) 1231 { 1232 struct pci_dev *pdev = adapter->pdev; 1233 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 1234 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1235 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; 1236 struct atl1_ring_header *ring_header = &adapter->ring_header; 1237 1238 atl1_clean_tx_ring(adapter); 1239 atl1_clean_rx_ring(adapter); 1240 1241 kfree(tpd_ring->buffer_info); 1242 pci_free_consistent(pdev, ring_header->size, ring_header->desc, 1243 ring_header->dma); 1244 1245 tpd_ring->buffer_info = NULL; 1246 tpd_ring->desc = NULL; 1247 tpd_ring->dma = 0; 1248 1249 rfd_ring->buffer_info = NULL; 1250 rfd_ring->desc = NULL; 1251 rfd_ring->dma = 0; 1252 1253 rrd_ring->desc = NULL; 1254 rrd_ring->dma = 0; 1255 1256 adapter->cmb.dma = 0; 1257 adapter->cmb.cmb = NULL; 1258 1259 adapter->smb.dma = 0; 1260 adapter->smb.smb = NULL; 1261 } 1262 1263 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter) 1264 { 1265 u32 value; 1266 struct atl1_hw *hw = &adapter->hw; 1267 struct net_device *netdev = adapter->netdev; 1268 /* Config MAC CTRL Register */ 1269 value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; 1270 /* duplex */ 1271 if (FULL_DUPLEX == adapter->link_duplex) 1272 value |= MAC_CTRL_DUPLX; 1273 /* speed */ 1274 value |= ((u32) ((SPEED_1000 == adapter->link_speed) ? 1275 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << 1276 MAC_CTRL_SPEED_SHIFT); 1277 /* flow control */ 1278 value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); 1279 /* PAD & CRC */ 1280 value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); 1281 /* preamble length */ 1282 value |= (((u32) adapter->hw.preamble_len 1283 & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); 1284 /* vlan */ 1285 __atlx_vlan_mode(netdev->features, &value); 1286 /* rx checksum 1287 if (adapter->rx_csum) 1288 value |= MAC_CTRL_RX_CHKSUM_EN; 1289 */ 1290 /* filter mode */ 1291 value |= MAC_CTRL_BC_EN; 1292 if (netdev->flags & IFF_PROMISC) 1293 value |= MAC_CTRL_PROMIS_EN; 1294 else if (netdev->flags & IFF_ALLMULTI) 1295 value |= MAC_CTRL_MC_ALL_EN; 1296 /* value |= MAC_CTRL_LOOPBACK; */ 1297 iowrite32(value, hw->hw_addr + REG_MAC_CTRL); 1298 } 1299 1300 static u32 atl1_check_link(struct atl1_adapter *adapter) 1301 { 1302 struct atl1_hw *hw = &adapter->hw; 1303 struct net_device *netdev = adapter->netdev; 1304 u32 ret_val; 1305 u16 speed, duplex, phy_data; 1306 int reconfig = 0; 1307 1308 /* MII_BMSR must read twice */ 1309 atl1_read_phy_reg(hw, MII_BMSR, &phy_data); 1310 atl1_read_phy_reg(hw, MII_BMSR, &phy_data); 1311 if (!(phy_data & BMSR_LSTATUS)) { 1312 /* link down */ 1313 if (netif_carrier_ok(netdev)) { 1314 /* old link state: Up */ 1315 if (netif_msg_link(adapter)) 1316 dev_info(&adapter->pdev->dev, "link is down\n"); 1317 adapter->link_speed = SPEED_0; 1318 netif_carrier_off(netdev); 1319 } 1320 return 0; 1321 } 1322 1323 /* Link Up */ 1324 ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex); 1325 if (ret_val) 1326 return ret_val; 1327 1328 switch (hw->media_type) { 1329 case MEDIA_TYPE_1000M_FULL: 1330 if (speed != SPEED_1000 || duplex != FULL_DUPLEX) 1331 reconfig = 1; 1332 break; 1333 case MEDIA_TYPE_100M_FULL: 1334 if (speed != SPEED_100 || duplex != FULL_DUPLEX) 1335 reconfig = 1; 1336 break; 1337 case MEDIA_TYPE_100M_HALF: 1338 if (speed != SPEED_100 || duplex != HALF_DUPLEX) 1339 reconfig = 1; 1340 break; 1341 case MEDIA_TYPE_10M_FULL: 1342 if (speed != SPEED_10 || duplex != FULL_DUPLEX) 1343 reconfig = 1; 1344 break; 1345 case MEDIA_TYPE_10M_HALF: 1346 if (speed != SPEED_10 || duplex != HALF_DUPLEX) 1347 reconfig = 1; 1348 break; 1349 } 1350 1351 /* link result is our setting */ 1352 if (!reconfig) { 1353 if (adapter->link_speed != speed || 1354 adapter->link_duplex != duplex) { 1355 adapter->link_speed = speed; 1356 adapter->link_duplex = duplex; 1357 atl1_setup_mac_ctrl(adapter); 1358 if (netif_msg_link(adapter)) 1359 dev_info(&adapter->pdev->dev, 1360 "%s link is up %d Mbps %s\n", 1361 netdev->name, adapter->link_speed, 1362 adapter->link_duplex == FULL_DUPLEX ? 1363 "full duplex" : "half duplex"); 1364 } 1365 if (!netif_carrier_ok(netdev)) { 1366 /* Link down -> Up */ 1367 netif_carrier_on(netdev); 1368 } 1369 return 0; 1370 } 1371 1372 /* change original link status */ 1373 if (netif_carrier_ok(netdev)) { 1374 adapter->link_speed = SPEED_0; 1375 netif_carrier_off(netdev); 1376 netif_stop_queue(netdev); 1377 } 1378 1379 if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR && 1380 hw->media_type != MEDIA_TYPE_1000M_FULL) { 1381 switch (hw->media_type) { 1382 case MEDIA_TYPE_100M_FULL: 1383 phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 | 1384 MII_CR_RESET; 1385 break; 1386 case MEDIA_TYPE_100M_HALF: 1387 phy_data = MII_CR_SPEED_100 | MII_CR_RESET; 1388 break; 1389 case MEDIA_TYPE_10M_FULL: 1390 phy_data = 1391 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET; 1392 break; 1393 default: 1394 /* MEDIA_TYPE_10M_HALF: */ 1395 phy_data = MII_CR_SPEED_10 | MII_CR_RESET; 1396 break; 1397 } 1398 atl1_write_phy_reg(hw, MII_BMCR, phy_data); 1399 return 0; 1400 } 1401 1402 /* auto-neg, insert timer to re-config phy */ 1403 if (!adapter->phy_timer_pending) { 1404 adapter->phy_timer_pending = true; 1405 mod_timer(&adapter->phy_config_timer, 1406 round_jiffies(jiffies + 3 * HZ)); 1407 } 1408 1409 return 0; 1410 } 1411 1412 static void set_flow_ctrl_old(struct atl1_adapter *adapter) 1413 { 1414 u32 hi, lo, value; 1415 1416 /* RFD Flow Control */ 1417 value = adapter->rfd_ring.count; 1418 hi = value / 16; 1419 if (hi < 2) 1420 hi = 2; 1421 lo = value * 7 / 8; 1422 1423 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | 1424 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); 1425 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH); 1426 1427 /* RRD Flow Control */ 1428 value = adapter->rrd_ring.count; 1429 lo = value / 16; 1430 hi = value * 7 / 8; 1431 if (lo < 2) 1432 lo = 2; 1433 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | 1434 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); 1435 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH); 1436 } 1437 1438 static void set_flow_ctrl_new(struct atl1_hw *hw) 1439 { 1440 u32 hi, lo, value; 1441 1442 /* RXF Flow Control */ 1443 value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN); 1444 lo = value / 16; 1445 if (lo < 192) 1446 lo = 192; 1447 hi = value * 7 / 8; 1448 if (hi < lo) 1449 hi = lo + 16; 1450 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | 1451 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); 1452 iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH); 1453 1454 /* RRD Flow Control */ 1455 value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN); 1456 lo = value / 8; 1457 hi = value * 7 / 8; 1458 if (lo < 2) 1459 lo = 2; 1460 if (hi < lo) 1461 hi = lo + 3; 1462 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | 1463 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); 1464 iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH); 1465 } 1466 1467 /** 1468 * atl1_configure - Configure Transmit&Receive Unit after Reset 1469 * @adapter: board private structure 1470 * 1471 * Configure the Tx /Rx unit of the MAC after a reset. 1472 */ 1473 static u32 atl1_configure(struct atl1_adapter *adapter) 1474 { 1475 struct atl1_hw *hw = &adapter->hw; 1476 u32 value; 1477 1478 /* clear interrupt status */ 1479 iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR); 1480 1481 /* set MAC Address */ 1482 value = (((u32) hw->mac_addr[2]) << 24) | 1483 (((u32) hw->mac_addr[3]) << 16) | 1484 (((u32) hw->mac_addr[4]) << 8) | 1485 (((u32) hw->mac_addr[5])); 1486 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR); 1487 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1])); 1488 iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4)); 1489 1490 /* tx / rx ring */ 1491 1492 /* HI base address */ 1493 iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32), 1494 hw->hw_addr + REG_DESC_BASE_ADDR_HI); 1495 /* LO base address */ 1496 iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL), 1497 hw->hw_addr + REG_DESC_RFD_ADDR_LO); 1498 iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL), 1499 hw->hw_addr + REG_DESC_RRD_ADDR_LO); 1500 iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL), 1501 hw->hw_addr + REG_DESC_TPD_ADDR_LO); 1502 iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL), 1503 hw->hw_addr + REG_DESC_CMB_ADDR_LO); 1504 iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL), 1505 hw->hw_addr + REG_DESC_SMB_ADDR_LO); 1506 1507 /* element count */ 1508 value = adapter->rrd_ring.count; 1509 value <<= 16; 1510 value += adapter->rfd_ring.count; 1511 iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE); 1512 iowrite32(adapter->tpd_ring.count, hw->hw_addr + 1513 REG_DESC_TPD_RING_SIZE); 1514 1515 /* Load Ptr */ 1516 iowrite32(1, hw->hw_addr + REG_LOAD_PTR); 1517 1518 /* config Mailbox */ 1519 value = ((atomic_read(&adapter->tpd_ring.next_to_use) 1520 & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) | 1521 ((atomic_read(&adapter->rrd_ring.next_to_clean) 1522 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) | 1523 ((atomic_read(&adapter->rfd_ring.next_to_use) 1524 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT); 1525 iowrite32(value, hw->hw_addr + REG_MAILBOX); 1526 1527 /* config IPG/IFG */ 1528 value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK) 1529 << MAC_IPG_IFG_IPGT_SHIFT) | 1530 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK) 1531 << MAC_IPG_IFG_MIFG_SHIFT) | 1532 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK) 1533 << MAC_IPG_IFG_IPGR1_SHIFT) | 1534 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK) 1535 << MAC_IPG_IFG_IPGR2_SHIFT); 1536 iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG); 1537 1538 /* config Half-Duplex Control */ 1539 value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) | 1540 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK) 1541 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) | 1542 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN | 1543 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) | 1544 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK) 1545 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT); 1546 iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL); 1547 1548 /* set Interrupt Moderator Timer */ 1549 iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT); 1550 iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL); 1551 1552 /* set Interrupt Clear Timer */ 1553 iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER); 1554 1555 /* set max frame size hw will accept */ 1556 iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU); 1557 1558 /* jumbo size & rrd retirement timer */ 1559 value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) 1560 << RXQ_JMBOSZ_TH_SHIFT) | 1561 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK) 1562 << RXQ_JMBO_LKAH_SHIFT) | 1563 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK) 1564 << RXQ_RRD_TIMER_SHIFT); 1565 iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM); 1566 1567 /* Flow Control */ 1568 switch (hw->dev_rev) { 1569 case 0x8001: 1570 case 0x9001: 1571 case 0x9002: 1572 case 0x9003: 1573 set_flow_ctrl_old(adapter); 1574 break; 1575 default: 1576 set_flow_ctrl_new(hw); 1577 break; 1578 } 1579 1580 /* config TXQ */ 1581 value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK) 1582 << TXQ_CTRL_TPD_BURST_NUM_SHIFT) | 1583 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK) 1584 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) | 1585 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK) 1586 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE | 1587 TXQ_CTRL_EN; 1588 iowrite32(value, hw->hw_addr + REG_TXQ_CTRL); 1589 1590 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */ 1591 value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK) 1592 << TX_JUMBO_TASK_TH_SHIFT) | 1593 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK) 1594 << TX_TPD_MIN_IPG_SHIFT); 1595 iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG); 1596 1597 /* config RXQ */ 1598 value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK) 1599 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) | 1600 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK) 1601 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) | 1602 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK) 1603 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN | 1604 RXQ_CTRL_EN; 1605 iowrite32(value, hw->hw_addr + REG_RXQ_CTRL); 1606 1607 /* config DMA Engine */ 1608 value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) 1609 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) | 1610 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) 1611 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN | 1612 DMA_CTRL_DMAW_EN; 1613 value |= (u32) hw->dma_ord; 1614 if (atl1_rcb_128 == hw->rcb_value) 1615 value |= DMA_CTRL_RCB_VALUE; 1616 iowrite32(value, hw->hw_addr + REG_DMA_CTRL); 1617 1618 /* config CMB / SMB */ 1619 value = (hw->cmb_tpd > adapter->tpd_ring.count) ? 1620 hw->cmb_tpd : adapter->tpd_ring.count; 1621 value <<= 16; 1622 value |= hw->cmb_rrd; 1623 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH); 1624 value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16); 1625 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER); 1626 iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER); 1627 1628 /* --- enable CMB / SMB */ 1629 value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN; 1630 iowrite32(value, hw->hw_addr + REG_CSMB_CTRL); 1631 1632 value = ioread32(adapter->hw.hw_addr + REG_ISR); 1633 if (unlikely((value & ISR_PHY_LINKDOWN) != 0)) 1634 value = 1; /* config failed */ 1635 else 1636 value = 0; 1637 1638 /* clear all interrupt status */ 1639 iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR); 1640 iowrite32(0, adapter->hw.hw_addr + REG_ISR); 1641 return value; 1642 } 1643 1644 /* 1645 * atl1_pcie_patch - Patch for PCIE module 1646 */ 1647 static void atl1_pcie_patch(struct atl1_adapter *adapter) 1648 { 1649 u32 value; 1650 1651 /* much vendor magic here */ 1652 value = 0x6500; 1653 iowrite32(value, adapter->hw.hw_addr + 0x12FC); 1654 /* pcie flow control mode change */ 1655 value = ioread32(adapter->hw.hw_addr + 0x1008); 1656 value |= 0x8000; 1657 iowrite32(value, adapter->hw.hw_addr + 0x1008); 1658 } 1659 1660 /* 1661 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400 1662 * on PCI Command register is disable. 1663 * The function enable this bit. 1664 * Brackett, 2006/03/15 1665 */ 1666 static void atl1_via_workaround(struct atl1_adapter *adapter) 1667 { 1668 unsigned long value; 1669 1670 value = ioread16(adapter->hw.hw_addr + PCI_COMMAND); 1671 if (value & PCI_COMMAND_INTX_DISABLE) 1672 value &= ~PCI_COMMAND_INTX_DISABLE; 1673 iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND); 1674 } 1675 1676 static void atl1_inc_smb(struct atl1_adapter *adapter) 1677 { 1678 struct net_device *netdev = adapter->netdev; 1679 struct stats_msg_block *smb = adapter->smb.smb; 1680 1681 /* Fill out the OS statistics structure */ 1682 adapter->soft_stats.rx_packets += smb->rx_ok; 1683 adapter->soft_stats.tx_packets += smb->tx_ok; 1684 adapter->soft_stats.rx_bytes += smb->rx_byte_cnt; 1685 adapter->soft_stats.tx_bytes += smb->tx_byte_cnt; 1686 adapter->soft_stats.multicast += smb->rx_mcast; 1687 adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 + 1688 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry); 1689 1690 /* Rx Errors */ 1691 adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err + 1692 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov + 1693 smb->rx_rrd_ov + smb->rx_align_err); 1694 adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov; 1695 adapter->soft_stats.rx_length_errors += smb->rx_len_err; 1696 adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err; 1697 adapter->soft_stats.rx_frame_errors += smb->rx_align_err; 1698 adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov + 1699 smb->rx_rxf_ov); 1700 1701 adapter->soft_stats.rx_pause += smb->rx_pause; 1702 adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov; 1703 adapter->soft_stats.rx_trunc += smb->rx_sz_ov; 1704 1705 /* Tx Errors */ 1706 adapter->soft_stats.tx_errors += (smb->tx_late_col + 1707 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc); 1708 adapter->soft_stats.tx_fifo_errors += smb->tx_underrun; 1709 adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col; 1710 adapter->soft_stats.tx_window_errors += smb->tx_late_col; 1711 1712 adapter->soft_stats.excecol += smb->tx_abort_col; 1713 adapter->soft_stats.deffer += smb->tx_defer; 1714 adapter->soft_stats.scc += smb->tx_1_col; 1715 adapter->soft_stats.mcc += smb->tx_2_col; 1716 adapter->soft_stats.latecol += smb->tx_late_col; 1717 adapter->soft_stats.tx_underun += smb->tx_underrun; 1718 adapter->soft_stats.tx_trunc += smb->tx_trunc; 1719 adapter->soft_stats.tx_pause += smb->tx_pause; 1720 1721 netdev->stats.rx_packets = adapter->soft_stats.rx_packets; 1722 netdev->stats.tx_packets = adapter->soft_stats.tx_packets; 1723 netdev->stats.rx_bytes = adapter->soft_stats.rx_bytes; 1724 netdev->stats.tx_bytes = adapter->soft_stats.tx_bytes; 1725 netdev->stats.multicast = adapter->soft_stats.multicast; 1726 netdev->stats.collisions = adapter->soft_stats.collisions; 1727 netdev->stats.rx_errors = adapter->soft_stats.rx_errors; 1728 netdev->stats.rx_over_errors = 1729 adapter->soft_stats.rx_missed_errors; 1730 netdev->stats.rx_length_errors = 1731 adapter->soft_stats.rx_length_errors; 1732 netdev->stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors; 1733 netdev->stats.rx_frame_errors = 1734 adapter->soft_stats.rx_frame_errors; 1735 netdev->stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors; 1736 netdev->stats.rx_missed_errors = 1737 adapter->soft_stats.rx_missed_errors; 1738 netdev->stats.tx_errors = adapter->soft_stats.tx_errors; 1739 netdev->stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors; 1740 netdev->stats.tx_aborted_errors = 1741 adapter->soft_stats.tx_aborted_errors; 1742 netdev->stats.tx_window_errors = 1743 adapter->soft_stats.tx_window_errors; 1744 netdev->stats.tx_carrier_errors = 1745 adapter->soft_stats.tx_carrier_errors; 1746 } 1747 1748 static void atl1_update_mailbox(struct atl1_adapter *adapter) 1749 { 1750 unsigned long flags; 1751 u32 tpd_next_to_use; 1752 u32 rfd_next_to_use; 1753 u32 rrd_next_to_clean; 1754 u32 value; 1755 1756 spin_lock_irqsave(&adapter->mb_lock, flags); 1757 1758 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); 1759 rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use); 1760 rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean); 1761 1762 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << 1763 MB_RFD_PROD_INDX_SHIFT) | 1764 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << 1765 MB_RRD_CONS_INDX_SHIFT) | 1766 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << 1767 MB_TPD_PROD_INDX_SHIFT); 1768 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); 1769 1770 spin_unlock_irqrestore(&adapter->mb_lock, flags); 1771 } 1772 1773 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter, 1774 struct rx_return_desc *rrd, u16 offset) 1775 { 1776 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1777 1778 while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) { 1779 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0; 1780 if (++rfd_ring->next_to_clean == rfd_ring->count) { 1781 rfd_ring->next_to_clean = 0; 1782 } 1783 } 1784 } 1785 1786 static void atl1_update_rfd_index(struct atl1_adapter *adapter, 1787 struct rx_return_desc *rrd) 1788 { 1789 u16 num_buf; 1790 1791 num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) / 1792 adapter->rx_buffer_len; 1793 if (rrd->num_buf == num_buf) 1794 /* clean alloc flag for bad rrd */ 1795 atl1_clean_alloc_flag(adapter, rrd, num_buf); 1796 } 1797 1798 static void atl1_rx_checksum(struct atl1_adapter *adapter, 1799 struct rx_return_desc *rrd, struct sk_buff *skb) 1800 { 1801 struct pci_dev *pdev = adapter->pdev; 1802 1803 /* 1804 * The L1 hardware contains a bug that erroneously sets the 1805 * PACKET_FLAG_ERR and ERR_FLAG_L4_CHKSUM bits whenever a 1806 * fragmented IP packet is received, even though the packet 1807 * is perfectly valid and its checksum is correct. There's 1808 * no way to distinguish between one of these good packets 1809 * and a packet that actually contains a TCP/UDP checksum 1810 * error, so all we can do is allow it to be handed up to 1811 * the higher layers and let it be sorted out there. 1812 */ 1813 1814 skb_checksum_none_assert(skb); 1815 1816 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) { 1817 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC | 1818 ERR_FLAG_CODE | ERR_FLAG_OV)) { 1819 adapter->hw_csum_err++; 1820 if (netif_msg_rx_err(adapter)) 1821 dev_printk(KERN_DEBUG, &pdev->dev, 1822 "rx checksum error\n"); 1823 return; 1824 } 1825 } 1826 1827 /* not IPv4 */ 1828 if (!(rrd->pkt_flg & PACKET_FLAG_IPV4)) 1829 /* checksum is invalid, but it's not an IPv4 pkt, so ok */ 1830 return; 1831 1832 /* IPv4 packet */ 1833 if (likely(!(rrd->err_flg & 1834 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) { 1835 skb->ip_summed = CHECKSUM_UNNECESSARY; 1836 adapter->hw_csum_good++; 1837 return; 1838 } 1839 } 1840 1841 /** 1842 * atl1_alloc_rx_buffers - Replace used receive buffers 1843 * @adapter: address of board private structure 1844 */ 1845 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter) 1846 { 1847 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1848 struct pci_dev *pdev = adapter->pdev; 1849 struct page *page; 1850 unsigned long offset; 1851 struct atl1_buffer *buffer_info, *next_info; 1852 struct sk_buff *skb; 1853 u16 num_alloc = 0; 1854 u16 rfd_next_to_use, next_next; 1855 struct rx_free_desc *rfd_desc; 1856 1857 next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use); 1858 if (++next_next == rfd_ring->count) 1859 next_next = 0; 1860 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; 1861 next_info = &rfd_ring->buffer_info[next_next]; 1862 1863 while (!buffer_info->alloced && !next_info->alloced) { 1864 if (buffer_info->skb) { 1865 buffer_info->alloced = 1; 1866 goto next; 1867 } 1868 1869 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use); 1870 1871 skb = netdev_alloc_skb_ip_align(adapter->netdev, 1872 adapter->rx_buffer_len); 1873 if (unlikely(!skb)) { 1874 /* Better luck next round */ 1875 adapter->netdev->stats.rx_dropped++; 1876 break; 1877 } 1878 1879 buffer_info->alloced = 1; 1880 buffer_info->skb = skb; 1881 buffer_info->length = (u16) adapter->rx_buffer_len; 1882 page = virt_to_page(skb->data); 1883 offset = (unsigned long)skb->data & ~PAGE_MASK; 1884 buffer_info->dma = pci_map_page(pdev, page, offset, 1885 adapter->rx_buffer_len, 1886 PCI_DMA_FROMDEVICE); 1887 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); 1888 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len); 1889 rfd_desc->coalese = 0; 1890 1891 next: 1892 rfd_next_to_use = next_next; 1893 if (unlikely(++next_next == rfd_ring->count)) 1894 next_next = 0; 1895 1896 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; 1897 next_info = &rfd_ring->buffer_info[next_next]; 1898 num_alloc++; 1899 } 1900 1901 if (num_alloc) { 1902 /* 1903 * Force memory writes to complete before letting h/w 1904 * know there are new descriptors to fetch. (Only 1905 * applicable for weak-ordered memory model archs, 1906 * such as IA-64). 1907 */ 1908 wmb(); 1909 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use); 1910 } 1911 return num_alloc; 1912 } 1913 1914 static int atl1_intr_rx(struct atl1_adapter *adapter, int budget) 1915 { 1916 int i, count; 1917 u16 length; 1918 u16 rrd_next_to_clean; 1919 u32 value; 1920 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; 1921 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; 1922 struct atl1_buffer *buffer_info; 1923 struct rx_return_desc *rrd; 1924 struct sk_buff *skb; 1925 1926 count = 0; 1927 1928 rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean); 1929 1930 while (count < budget) { 1931 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean); 1932 i = 1; 1933 if (likely(rrd->xsz.valid)) { /* packet valid */ 1934 chk_rrd: 1935 /* check rrd status */ 1936 if (likely(rrd->num_buf == 1)) 1937 goto rrd_ok; 1938 else if (netif_msg_rx_err(adapter)) { 1939 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1940 "unexpected RRD buffer count\n"); 1941 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1942 "rx_buf_len = %d\n", 1943 adapter->rx_buffer_len); 1944 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1945 "RRD num_buf = %d\n", 1946 rrd->num_buf); 1947 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1948 "RRD pkt_len = %d\n", 1949 rrd->xsz.xsum_sz.pkt_size); 1950 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1951 "RRD pkt_flg = 0x%08X\n", 1952 rrd->pkt_flg); 1953 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1954 "RRD err_flg = 0x%08X\n", 1955 rrd->err_flg); 1956 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1957 "RRD vlan_tag = 0x%08X\n", 1958 rrd->vlan_tag); 1959 } 1960 1961 /* rrd seems to be bad */ 1962 if (unlikely(i-- > 0)) { 1963 /* rrd may not be DMAed completely */ 1964 udelay(1); 1965 goto chk_rrd; 1966 } 1967 /* bad rrd */ 1968 if (netif_msg_rx_err(adapter)) 1969 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 1970 "bad RRD\n"); 1971 /* see if update RFD index */ 1972 if (rrd->num_buf > 1) 1973 atl1_update_rfd_index(adapter, rrd); 1974 1975 /* update rrd */ 1976 rrd->xsz.valid = 0; 1977 if (++rrd_next_to_clean == rrd_ring->count) 1978 rrd_next_to_clean = 0; 1979 count++; 1980 continue; 1981 } else { /* current rrd still not be updated */ 1982 1983 break; 1984 } 1985 rrd_ok: 1986 /* clean alloc flag for bad rrd */ 1987 atl1_clean_alloc_flag(adapter, rrd, 0); 1988 1989 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx]; 1990 if (++rfd_ring->next_to_clean == rfd_ring->count) 1991 rfd_ring->next_to_clean = 0; 1992 1993 /* update rrd next to clean */ 1994 if (++rrd_next_to_clean == rrd_ring->count) 1995 rrd_next_to_clean = 0; 1996 count++; 1997 1998 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) { 1999 if (!(rrd->err_flg & 2000 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM 2001 | ERR_FLAG_LEN))) { 2002 /* packet error, don't need upstream */ 2003 buffer_info->alloced = 0; 2004 rrd->xsz.valid = 0; 2005 continue; 2006 } 2007 } 2008 2009 /* Good Receive */ 2010 pci_unmap_page(adapter->pdev, buffer_info->dma, 2011 buffer_info->length, PCI_DMA_FROMDEVICE); 2012 buffer_info->dma = 0; 2013 skb = buffer_info->skb; 2014 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size); 2015 2016 skb_put(skb, length - ETH_FCS_LEN); 2017 2018 /* Receive Checksum Offload */ 2019 atl1_rx_checksum(adapter, rrd, skb); 2020 skb->protocol = eth_type_trans(skb, adapter->netdev); 2021 2022 if (rrd->pkt_flg & PACKET_FLAG_VLAN_INS) { 2023 u16 vlan_tag = (rrd->vlan_tag >> 4) | 2024 ((rrd->vlan_tag & 7) << 13) | 2025 ((rrd->vlan_tag & 8) << 9); 2026 2027 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag); 2028 } 2029 netif_receive_skb(skb); 2030 2031 /* let protocol layer free skb */ 2032 buffer_info->skb = NULL; 2033 buffer_info->alloced = 0; 2034 rrd->xsz.valid = 0; 2035 } 2036 2037 atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean); 2038 2039 atl1_alloc_rx_buffers(adapter); 2040 2041 /* update mailbox ? */ 2042 if (count) { 2043 u32 tpd_next_to_use; 2044 u32 rfd_next_to_use; 2045 2046 spin_lock(&adapter->mb_lock); 2047 2048 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); 2049 rfd_next_to_use = 2050 atomic_read(&adapter->rfd_ring.next_to_use); 2051 rrd_next_to_clean = 2052 atomic_read(&adapter->rrd_ring.next_to_clean); 2053 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << 2054 MB_RFD_PROD_INDX_SHIFT) | 2055 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << 2056 MB_RRD_CONS_INDX_SHIFT) | 2057 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << 2058 MB_TPD_PROD_INDX_SHIFT); 2059 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); 2060 spin_unlock(&adapter->mb_lock); 2061 } 2062 2063 return count; 2064 } 2065 2066 static int atl1_intr_tx(struct atl1_adapter *adapter) 2067 { 2068 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 2069 struct atl1_buffer *buffer_info; 2070 u16 sw_tpd_next_to_clean; 2071 u16 cmb_tpd_next_to_clean; 2072 int count = 0; 2073 2074 sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean); 2075 cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx); 2076 2077 while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) { 2078 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean]; 2079 if (buffer_info->dma) { 2080 pci_unmap_page(adapter->pdev, buffer_info->dma, 2081 buffer_info->length, PCI_DMA_TODEVICE); 2082 buffer_info->dma = 0; 2083 } 2084 2085 if (buffer_info->skb) { 2086 dev_kfree_skb_irq(buffer_info->skb); 2087 buffer_info->skb = NULL; 2088 } 2089 2090 if (++sw_tpd_next_to_clean == tpd_ring->count) 2091 sw_tpd_next_to_clean = 0; 2092 2093 count++; 2094 } 2095 atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean); 2096 2097 if (netif_queue_stopped(adapter->netdev) && 2098 netif_carrier_ok(adapter->netdev)) 2099 netif_wake_queue(adapter->netdev); 2100 2101 return count; 2102 } 2103 2104 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring) 2105 { 2106 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); 2107 u16 next_to_use = atomic_read(&tpd_ring->next_to_use); 2108 return (next_to_clean > next_to_use) ? 2109 next_to_clean - next_to_use - 1 : 2110 tpd_ring->count + next_to_clean - next_to_use - 1; 2111 } 2112 2113 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb, 2114 struct tx_packet_desc *ptpd) 2115 { 2116 u8 hdr_len, ip_off; 2117 u32 real_len; 2118 int err; 2119 2120 if (skb_shinfo(skb)->gso_size) { 2121 if (skb_header_cloned(skb)) { 2122 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); 2123 if (unlikely(err)) 2124 return -1; 2125 } 2126 2127 if (skb->protocol == htons(ETH_P_IP)) { 2128 struct iphdr *iph = ip_hdr(skb); 2129 2130 real_len = (((unsigned char *)iph - skb->data) + 2131 ntohs(iph->tot_len)); 2132 if (real_len < skb->len) 2133 pskb_trim(skb, real_len); 2134 hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); 2135 if (skb->len == hdr_len) { 2136 iph->check = 0; 2137 tcp_hdr(skb)->check = 2138 ~csum_tcpudp_magic(iph->saddr, 2139 iph->daddr, tcp_hdrlen(skb), 2140 IPPROTO_TCP, 0); 2141 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) << 2142 TPD_IPHL_SHIFT; 2143 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) & 2144 TPD_TCPHDRLEN_MASK) << 2145 TPD_TCPHDRLEN_SHIFT; 2146 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT; 2147 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT; 2148 return 1; 2149 } 2150 2151 iph->check = 0; 2152 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, 2153 iph->daddr, 0, IPPROTO_TCP, 0); 2154 ip_off = (unsigned char *)iph - 2155 (unsigned char *) skb_network_header(skb); 2156 if (ip_off == 8) /* 802.3-SNAP frame */ 2157 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; 2158 else if (ip_off != 0) 2159 return -2; 2160 2161 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) << 2162 TPD_IPHL_SHIFT; 2163 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) & 2164 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT; 2165 ptpd->word3 |= (skb_shinfo(skb)->gso_size & 2166 TPD_MSS_MASK) << TPD_MSS_SHIFT; 2167 ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; 2168 return 3; 2169 } 2170 } 2171 return false; 2172 } 2173 2174 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb, 2175 struct tx_packet_desc *ptpd) 2176 { 2177 u8 css, cso; 2178 2179 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { 2180 css = skb_checksum_start_offset(skb); 2181 cso = css + (u8) skb->csum_offset; 2182 if (unlikely(css & 0x1)) { 2183 /* L1 hardware requires an even number here */ 2184 if (netif_msg_tx_err(adapter)) 2185 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 2186 "payload offset not an even number\n"); 2187 return -1; 2188 } 2189 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) << 2190 TPD_PLOADOFFSET_SHIFT; 2191 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) << 2192 TPD_CCSUMOFFSET_SHIFT; 2193 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT; 2194 return true; 2195 } 2196 return 0; 2197 } 2198 2199 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb, 2200 struct tx_packet_desc *ptpd) 2201 { 2202 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 2203 struct atl1_buffer *buffer_info; 2204 u16 buf_len = skb->len; 2205 struct page *page; 2206 unsigned long offset; 2207 unsigned int nr_frags; 2208 unsigned int f; 2209 int retval; 2210 u16 next_to_use; 2211 u16 data_len; 2212 u8 hdr_len; 2213 2214 buf_len -= skb->data_len; 2215 nr_frags = skb_shinfo(skb)->nr_frags; 2216 next_to_use = atomic_read(&tpd_ring->next_to_use); 2217 buffer_info = &tpd_ring->buffer_info[next_to_use]; 2218 BUG_ON(buffer_info->skb); 2219 /* put skb in last TPD */ 2220 buffer_info->skb = NULL; 2221 2222 retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK; 2223 if (retval) { 2224 /* TSO */ 2225 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 2226 buffer_info->length = hdr_len; 2227 page = virt_to_page(skb->data); 2228 offset = (unsigned long)skb->data & ~PAGE_MASK; 2229 buffer_info->dma = pci_map_page(adapter->pdev, page, 2230 offset, hdr_len, 2231 PCI_DMA_TODEVICE); 2232 2233 if (++next_to_use == tpd_ring->count) 2234 next_to_use = 0; 2235 2236 if (buf_len > hdr_len) { 2237 int i, nseg; 2238 2239 data_len = buf_len - hdr_len; 2240 nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) / 2241 ATL1_MAX_TX_BUF_LEN; 2242 for (i = 0; i < nseg; i++) { 2243 buffer_info = 2244 &tpd_ring->buffer_info[next_to_use]; 2245 buffer_info->skb = NULL; 2246 buffer_info->length = 2247 (ATL1_MAX_TX_BUF_LEN >= 2248 data_len) ? ATL1_MAX_TX_BUF_LEN : data_len; 2249 data_len -= buffer_info->length; 2250 page = virt_to_page(skb->data + 2251 (hdr_len + i * ATL1_MAX_TX_BUF_LEN)); 2252 offset = (unsigned long)(skb->data + 2253 (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) & 2254 ~PAGE_MASK; 2255 buffer_info->dma = pci_map_page(adapter->pdev, 2256 page, offset, buffer_info->length, 2257 PCI_DMA_TODEVICE); 2258 if (++next_to_use == tpd_ring->count) 2259 next_to_use = 0; 2260 } 2261 } 2262 } else { 2263 /* not TSO */ 2264 buffer_info->length = buf_len; 2265 page = virt_to_page(skb->data); 2266 offset = (unsigned long)skb->data & ~PAGE_MASK; 2267 buffer_info->dma = pci_map_page(adapter->pdev, page, 2268 offset, buf_len, PCI_DMA_TODEVICE); 2269 if (++next_to_use == tpd_ring->count) 2270 next_to_use = 0; 2271 } 2272 2273 for (f = 0; f < nr_frags; f++) { 2274 const struct skb_frag_struct *frag; 2275 u16 i, nseg; 2276 2277 frag = &skb_shinfo(skb)->frags[f]; 2278 buf_len = skb_frag_size(frag); 2279 2280 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) / 2281 ATL1_MAX_TX_BUF_LEN; 2282 for (i = 0; i < nseg; i++) { 2283 buffer_info = &tpd_ring->buffer_info[next_to_use]; 2284 BUG_ON(buffer_info->skb); 2285 2286 buffer_info->skb = NULL; 2287 buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ? 2288 ATL1_MAX_TX_BUF_LEN : buf_len; 2289 buf_len -= buffer_info->length; 2290 buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev, 2291 frag, i * ATL1_MAX_TX_BUF_LEN, 2292 buffer_info->length, DMA_TO_DEVICE); 2293 2294 if (++next_to_use == tpd_ring->count) 2295 next_to_use = 0; 2296 } 2297 } 2298 2299 /* last tpd's buffer-info */ 2300 buffer_info->skb = skb; 2301 } 2302 2303 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count, 2304 struct tx_packet_desc *ptpd) 2305 { 2306 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 2307 struct atl1_buffer *buffer_info; 2308 struct tx_packet_desc *tpd; 2309 u16 j; 2310 u32 val; 2311 u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use); 2312 2313 for (j = 0; j < count; j++) { 2314 buffer_info = &tpd_ring->buffer_info[next_to_use]; 2315 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use); 2316 if (tpd != ptpd) 2317 memcpy(tpd, ptpd, sizeof(struct tx_packet_desc)); 2318 tpd->buffer_addr = cpu_to_le64(buffer_info->dma); 2319 tpd->word2 &= ~(TPD_BUFLEN_MASK << TPD_BUFLEN_SHIFT); 2320 tpd->word2 |= (cpu_to_le16(buffer_info->length) & 2321 TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT; 2322 2323 /* 2324 * if this is the first packet in a TSO chain, set 2325 * TPD_HDRFLAG, otherwise, clear it. 2326 */ 2327 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & 2328 TPD_SEGMENT_EN_MASK; 2329 if (val) { 2330 if (!j) 2331 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT; 2332 else 2333 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT); 2334 } 2335 2336 if (j == (count - 1)) 2337 tpd->word3 |= 1 << TPD_EOP_SHIFT; 2338 2339 if (++next_to_use == tpd_ring->count) 2340 next_to_use = 0; 2341 } 2342 /* 2343 * Force memory writes to complete before letting h/w 2344 * know there are new descriptors to fetch. (Only 2345 * applicable for weak-ordered memory model archs, 2346 * such as IA-64). 2347 */ 2348 wmb(); 2349 2350 atomic_set(&tpd_ring->next_to_use, next_to_use); 2351 } 2352 2353 static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb, 2354 struct net_device *netdev) 2355 { 2356 struct atl1_adapter *adapter = netdev_priv(netdev); 2357 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; 2358 int len; 2359 int tso; 2360 int count = 1; 2361 int ret_val; 2362 struct tx_packet_desc *ptpd; 2363 u16 vlan_tag; 2364 unsigned int nr_frags = 0; 2365 unsigned int mss = 0; 2366 unsigned int f; 2367 unsigned int proto_hdr_len; 2368 2369 len = skb_headlen(skb); 2370 2371 if (unlikely(skb->len <= 0)) { 2372 dev_kfree_skb_any(skb); 2373 return NETDEV_TX_OK; 2374 } 2375 2376 nr_frags = skb_shinfo(skb)->nr_frags; 2377 for (f = 0; f < nr_frags; f++) { 2378 unsigned int f_size = skb_frag_size(&skb_shinfo(skb)->frags[f]); 2379 count += (f_size + ATL1_MAX_TX_BUF_LEN - 1) / 2380 ATL1_MAX_TX_BUF_LEN; 2381 } 2382 2383 mss = skb_shinfo(skb)->gso_size; 2384 if (mss) { 2385 if (skb->protocol == htons(ETH_P_IP)) { 2386 proto_hdr_len = (skb_transport_offset(skb) + 2387 tcp_hdrlen(skb)); 2388 if (unlikely(proto_hdr_len > len)) { 2389 dev_kfree_skb_any(skb); 2390 return NETDEV_TX_OK; 2391 } 2392 /* need additional TPD ? */ 2393 if (proto_hdr_len != len) 2394 count += (len - proto_hdr_len + 2395 ATL1_MAX_TX_BUF_LEN - 1) / 2396 ATL1_MAX_TX_BUF_LEN; 2397 } 2398 } 2399 2400 if (atl1_tpd_avail(&adapter->tpd_ring) < count) { 2401 /* not enough descriptors */ 2402 netif_stop_queue(netdev); 2403 if (netif_msg_tx_queued(adapter)) 2404 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 2405 "tx busy\n"); 2406 return NETDEV_TX_BUSY; 2407 } 2408 2409 ptpd = ATL1_TPD_DESC(tpd_ring, 2410 (u16) atomic_read(&tpd_ring->next_to_use)); 2411 memset(ptpd, 0, sizeof(struct tx_packet_desc)); 2412 2413 if (vlan_tx_tag_present(skb)) { 2414 vlan_tag = vlan_tx_tag_get(skb); 2415 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) | 2416 ((vlan_tag >> 9) & 0x8); 2417 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT; 2418 ptpd->word2 |= (vlan_tag & TPD_VLANTAG_MASK) << 2419 TPD_VLANTAG_SHIFT; 2420 } 2421 2422 tso = atl1_tso(adapter, skb, ptpd); 2423 if (tso < 0) { 2424 dev_kfree_skb_any(skb); 2425 return NETDEV_TX_OK; 2426 } 2427 2428 if (!tso) { 2429 ret_val = atl1_tx_csum(adapter, skb, ptpd); 2430 if (ret_val < 0) { 2431 dev_kfree_skb_any(skb); 2432 return NETDEV_TX_OK; 2433 } 2434 } 2435 2436 atl1_tx_map(adapter, skb, ptpd); 2437 atl1_tx_queue(adapter, count, ptpd); 2438 atl1_update_mailbox(adapter); 2439 mmiowb(); 2440 return NETDEV_TX_OK; 2441 } 2442 2443 static int atl1_rings_clean(struct napi_struct *napi, int budget) 2444 { 2445 struct atl1_adapter *adapter = container_of(napi, struct atl1_adapter, napi); 2446 int work_done = atl1_intr_rx(adapter, budget); 2447 2448 if (atl1_intr_tx(adapter)) 2449 work_done = budget; 2450 2451 /* Let's come again to process some more packets */ 2452 if (work_done >= budget) 2453 return work_done; 2454 2455 napi_complete(napi); 2456 /* re-enable Interrupt */ 2457 if (likely(adapter->int_enabled)) 2458 atlx_imr_set(adapter, IMR_NORMAL_MASK); 2459 return work_done; 2460 } 2461 2462 static inline int atl1_sched_rings_clean(struct atl1_adapter* adapter) 2463 { 2464 if (!napi_schedule_prep(&adapter->napi)) 2465 /* It is possible in case even the RX/TX ints are disabled via IMR 2466 * register the ISR bits are set anyway (but do not produce IRQ). 2467 * To handle such situation the napi functions used to check is 2468 * something scheduled or not. 2469 */ 2470 return 0; 2471 2472 __napi_schedule(&adapter->napi); 2473 2474 /* 2475 * Disable RX/TX ints via IMR register if it is 2476 * allowed. NAPI handler must reenable them in same 2477 * way. 2478 */ 2479 if (!adapter->int_enabled) 2480 return 1; 2481 2482 atlx_imr_set(adapter, IMR_NORXTX_MASK); 2483 return 1; 2484 } 2485 2486 /** 2487 * atl1_intr - Interrupt Handler 2488 * @irq: interrupt number 2489 * @data: pointer to a network interface device structure 2490 */ 2491 static irqreturn_t atl1_intr(int irq, void *data) 2492 { 2493 struct atl1_adapter *adapter = netdev_priv(data); 2494 u32 status; 2495 2496 status = adapter->cmb.cmb->int_stats; 2497 if (!status) 2498 return IRQ_NONE; 2499 2500 /* clear CMB interrupt status at once, 2501 * but leave rx/tx interrupt status in case it should be dropped 2502 * only if rx/tx processing queued. In other case interrupt 2503 * can be lost. 2504 */ 2505 adapter->cmb.cmb->int_stats = status & (ISR_CMB_TX | ISR_CMB_RX); 2506 2507 if (status & ISR_GPHY) /* clear phy status */ 2508 atlx_clear_phy_int(adapter); 2509 2510 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */ 2511 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR); 2512 2513 /* check if SMB intr */ 2514 if (status & ISR_SMB) 2515 atl1_inc_smb(adapter); 2516 2517 /* check if PCIE PHY Link down */ 2518 if (status & ISR_PHY_LINKDOWN) { 2519 if (netif_msg_intr(adapter)) 2520 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 2521 "pcie phy link down %x\n", status); 2522 if (netif_running(adapter->netdev)) { /* reset MAC */ 2523 atlx_irq_disable(adapter); 2524 schedule_work(&adapter->reset_dev_task); 2525 return IRQ_HANDLED; 2526 } 2527 } 2528 2529 /* check if DMA read/write error ? */ 2530 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { 2531 if (netif_msg_intr(adapter)) 2532 dev_printk(KERN_DEBUG, &adapter->pdev->dev, 2533 "pcie DMA r/w error (status = 0x%x)\n", 2534 status); 2535 atlx_irq_disable(adapter); 2536 schedule_work(&adapter->reset_dev_task); 2537 return IRQ_HANDLED; 2538 } 2539 2540 /* link event */ 2541 if (status & ISR_GPHY) { 2542 adapter->soft_stats.tx_carrier_errors++; 2543 atl1_check_for_link(adapter); 2544 } 2545 2546 /* transmit or receive event */ 2547 if (status & (ISR_CMB_TX | ISR_CMB_RX) && 2548 atl1_sched_rings_clean(adapter)) 2549 adapter->cmb.cmb->int_stats = adapter->cmb.cmb->int_stats & 2550 ~(ISR_CMB_TX | ISR_CMB_RX); 2551 2552 /* rx exception */ 2553 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN | 2554 ISR_RRD_OV | ISR_HOST_RFD_UNRUN | 2555 ISR_HOST_RRD_OV))) { 2556 if (netif_msg_intr(adapter)) 2557 dev_printk(KERN_DEBUG, 2558 &adapter->pdev->dev, 2559 "rx exception, ISR = 0x%x\n", 2560 status); 2561 atl1_sched_rings_clean(adapter); 2562 } 2563 2564 /* re-enable Interrupt */ 2565 iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR); 2566 return IRQ_HANDLED; 2567 } 2568 2569 2570 /** 2571 * atl1_phy_config - Timer Call-back 2572 * @data: pointer to netdev cast into an unsigned long 2573 */ 2574 static void atl1_phy_config(unsigned long data) 2575 { 2576 struct atl1_adapter *adapter = (struct atl1_adapter *)data; 2577 struct atl1_hw *hw = &adapter->hw; 2578 unsigned long flags; 2579 2580 spin_lock_irqsave(&adapter->lock, flags); 2581 adapter->phy_timer_pending = false; 2582 atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg); 2583 atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg); 2584 atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN); 2585 spin_unlock_irqrestore(&adapter->lock, flags); 2586 } 2587 2588 /* 2589 * Orphaned vendor comment left intact here: 2590 * <vendor comment> 2591 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT 2592 * will assert. We do soft reset <0x1400=1> according 2593 * with the SPEC. BUT, it seemes that PCIE or DMA 2594 * state-machine will not be reset. DMAR_TO_INT will 2595 * assert again and again. 2596 * </vendor comment> 2597 */ 2598 2599 static int atl1_reset(struct atl1_adapter *adapter) 2600 { 2601 int ret; 2602 ret = atl1_reset_hw(&adapter->hw); 2603 if (ret) 2604 return ret; 2605 return atl1_init_hw(&adapter->hw); 2606 } 2607 2608 static s32 atl1_up(struct atl1_adapter *adapter) 2609 { 2610 struct net_device *netdev = adapter->netdev; 2611 int err; 2612 int irq_flags = 0; 2613 2614 /* hardware has been reset, we need to reload some things */ 2615 atlx_set_multi(netdev); 2616 atl1_init_ring_ptrs(adapter); 2617 atlx_restore_vlan(adapter); 2618 err = atl1_alloc_rx_buffers(adapter); 2619 if (unlikely(!err)) 2620 /* no RX BUFFER allocated */ 2621 return -ENOMEM; 2622 2623 if (unlikely(atl1_configure(adapter))) { 2624 err = -EIO; 2625 goto err_up; 2626 } 2627 2628 err = pci_enable_msi(adapter->pdev); 2629 if (err) { 2630 if (netif_msg_ifup(adapter)) 2631 dev_info(&adapter->pdev->dev, 2632 "Unable to enable MSI: %d\n", err); 2633 irq_flags |= IRQF_SHARED; 2634 } 2635 2636 err = request_irq(adapter->pdev->irq, atl1_intr, irq_flags, 2637 netdev->name, netdev); 2638 if (unlikely(err)) 2639 goto err_up; 2640 2641 napi_enable(&adapter->napi); 2642 atlx_irq_enable(adapter); 2643 atl1_check_link(adapter); 2644 netif_start_queue(netdev); 2645 return 0; 2646 2647 err_up: 2648 pci_disable_msi(adapter->pdev); 2649 /* free rx_buffers */ 2650 atl1_clean_rx_ring(adapter); 2651 return err; 2652 } 2653 2654 static void atl1_down(struct atl1_adapter *adapter) 2655 { 2656 struct net_device *netdev = adapter->netdev; 2657 2658 napi_disable(&adapter->napi); 2659 netif_stop_queue(netdev); 2660 del_timer_sync(&adapter->phy_config_timer); 2661 adapter->phy_timer_pending = false; 2662 2663 atlx_irq_disable(adapter); 2664 free_irq(adapter->pdev->irq, netdev); 2665 pci_disable_msi(adapter->pdev); 2666 atl1_reset_hw(&adapter->hw); 2667 adapter->cmb.cmb->int_stats = 0; 2668 2669 adapter->link_speed = SPEED_0; 2670 adapter->link_duplex = -1; 2671 netif_carrier_off(netdev); 2672 2673 atl1_clean_tx_ring(adapter); 2674 atl1_clean_rx_ring(adapter); 2675 } 2676 2677 static void atl1_reset_dev_task(struct work_struct *work) 2678 { 2679 struct atl1_adapter *adapter = 2680 container_of(work, struct atl1_adapter, reset_dev_task); 2681 struct net_device *netdev = adapter->netdev; 2682 2683 netif_device_detach(netdev); 2684 atl1_down(adapter); 2685 atl1_up(adapter); 2686 netif_device_attach(netdev); 2687 } 2688 2689 /** 2690 * atl1_change_mtu - Change the Maximum Transfer Unit 2691 * @netdev: network interface device structure 2692 * @new_mtu: new value for maximum frame size 2693 * 2694 * Returns 0 on success, negative on failure 2695 */ 2696 static int atl1_change_mtu(struct net_device *netdev, int new_mtu) 2697 { 2698 struct atl1_adapter *adapter = netdev_priv(netdev); 2699 int old_mtu = netdev->mtu; 2700 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 2701 2702 if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || 2703 (max_frame > MAX_JUMBO_FRAME_SIZE)) { 2704 if (netif_msg_link(adapter)) 2705 dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); 2706 return -EINVAL; 2707 } 2708 2709 adapter->hw.max_frame_size = max_frame; 2710 adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3; 2711 adapter->rx_buffer_len = (max_frame + 7) & ~7; 2712 adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8; 2713 2714 netdev->mtu = new_mtu; 2715 if ((old_mtu != new_mtu) && netif_running(netdev)) { 2716 atl1_down(adapter); 2717 atl1_up(adapter); 2718 } 2719 2720 return 0; 2721 } 2722 2723 /** 2724 * atl1_open - Called when a network interface is made active 2725 * @netdev: network interface device structure 2726 * 2727 * Returns 0 on success, negative value on failure 2728 * 2729 * The open entry point is called when a network interface is made 2730 * active by the system (IFF_UP). At this point all resources needed 2731 * for transmit and receive operations are allocated, the interrupt 2732 * handler is registered with the OS, the watchdog timer is started, 2733 * and the stack is notified that the interface is ready. 2734 */ 2735 static int atl1_open(struct net_device *netdev) 2736 { 2737 struct atl1_adapter *adapter = netdev_priv(netdev); 2738 int err; 2739 2740 netif_carrier_off(netdev); 2741 2742 /* allocate transmit descriptors */ 2743 err = atl1_setup_ring_resources(adapter); 2744 if (err) 2745 return err; 2746 2747 err = atl1_up(adapter); 2748 if (err) 2749 goto err_up; 2750 2751 return 0; 2752 2753 err_up: 2754 atl1_reset(adapter); 2755 return err; 2756 } 2757 2758 /** 2759 * atl1_close - Disables a network interface 2760 * @netdev: network interface device structure 2761 * 2762 * Returns 0, this is not allowed to fail 2763 * 2764 * The close entry point is called when an interface is de-activated 2765 * by the OS. The hardware is still under the drivers control, but 2766 * needs to be disabled. A global MAC reset is issued to stop the 2767 * hardware, and all transmit and receive resources are freed. 2768 */ 2769 static int atl1_close(struct net_device *netdev) 2770 { 2771 struct atl1_adapter *adapter = netdev_priv(netdev); 2772 atl1_down(adapter); 2773 atl1_free_ring_resources(adapter); 2774 return 0; 2775 } 2776 2777 #ifdef CONFIG_PM_SLEEP 2778 static int atl1_suspend(struct device *dev) 2779 { 2780 struct pci_dev *pdev = to_pci_dev(dev); 2781 struct net_device *netdev = pci_get_drvdata(pdev); 2782 struct atl1_adapter *adapter = netdev_priv(netdev); 2783 struct atl1_hw *hw = &adapter->hw; 2784 u32 ctrl = 0; 2785 u32 wufc = adapter->wol; 2786 u32 val; 2787 u16 speed; 2788 u16 duplex; 2789 2790 netif_device_detach(netdev); 2791 if (netif_running(netdev)) 2792 atl1_down(adapter); 2793 2794 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); 2795 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); 2796 val = ctrl & BMSR_LSTATUS; 2797 if (val) 2798 wufc &= ~ATLX_WUFC_LNKC; 2799 if (!wufc) 2800 goto disable_wol; 2801 2802 if (val) { 2803 val = atl1_get_speed_and_duplex(hw, &speed, &duplex); 2804 if (val) { 2805 if (netif_msg_ifdown(adapter)) 2806 dev_printk(KERN_DEBUG, &pdev->dev, 2807 "error getting speed/duplex\n"); 2808 goto disable_wol; 2809 } 2810 2811 ctrl = 0; 2812 2813 /* enable magic packet WOL */ 2814 if (wufc & ATLX_WUFC_MAG) 2815 ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN); 2816 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL); 2817 ioread32(hw->hw_addr + REG_WOL_CTRL); 2818 2819 /* configure the mac */ 2820 ctrl = MAC_CTRL_RX_EN; 2821 ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 : 2822 MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT); 2823 if (duplex == FULL_DUPLEX) 2824 ctrl |= MAC_CTRL_DUPLX; 2825 ctrl |= (((u32)adapter->hw.preamble_len & 2826 MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); 2827 __atlx_vlan_mode(netdev->features, &ctrl); 2828 if (wufc & ATLX_WUFC_MAG) 2829 ctrl |= MAC_CTRL_BC_EN; 2830 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL); 2831 ioread32(hw->hw_addr + REG_MAC_CTRL); 2832 2833 /* poke the PHY */ 2834 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC); 2835 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; 2836 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC); 2837 ioread32(hw->hw_addr + REG_PCIE_PHYMISC); 2838 } else { 2839 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN); 2840 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL); 2841 ioread32(hw->hw_addr + REG_WOL_CTRL); 2842 iowrite32(0, hw->hw_addr + REG_MAC_CTRL); 2843 ioread32(hw->hw_addr + REG_MAC_CTRL); 2844 hw->phy_configured = false; 2845 } 2846 2847 return 0; 2848 2849 disable_wol: 2850 iowrite32(0, hw->hw_addr + REG_WOL_CTRL); 2851 ioread32(hw->hw_addr + REG_WOL_CTRL); 2852 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC); 2853 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; 2854 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC); 2855 ioread32(hw->hw_addr + REG_PCIE_PHYMISC); 2856 hw->phy_configured = false; 2857 2858 return 0; 2859 } 2860 2861 static int atl1_resume(struct device *dev) 2862 { 2863 struct pci_dev *pdev = to_pci_dev(dev); 2864 struct net_device *netdev = pci_get_drvdata(pdev); 2865 struct atl1_adapter *adapter = netdev_priv(netdev); 2866 2867 iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL); 2868 2869 atl1_reset_hw(&adapter->hw); 2870 2871 if (netif_running(netdev)) { 2872 adapter->cmb.cmb->int_stats = 0; 2873 atl1_up(adapter); 2874 } 2875 netif_device_attach(netdev); 2876 2877 return 0; 2878 } 2879 #endif 2880 2881 static SIMPLE_DEV_PM_OPS(atl1_pm_ops, atl1_suspend, atl1_resume); 2882 2883 static void atl1_shutdown(struct pci_dev *pdev) 2884 { 2885 struct net_device *netdev = pci_get_drvdata(pdev); 2886 struct atl1_adapter *adapter = netdev_priv(netdev); 2887 2888 #ifdef CONFIG_PM_SLEEP 2889 atl1_suspend(&pdev->dev); 2890 #endif 2891 pci_wake_from_d3(pdev, adapter->wol); 2892 pci_set_power_state(pdev, PCI_D3hot); 2893 } 2894 2895 #ifdef CONFIG_NET_POLL_CONTROLLER 2896 static void atl1_poll_controller(struct net_device *netdev) 2897 { 2898 disable_irq(netdev->irq); 2899 atl1_intr(netdev->irq, netdev); 2900 enable_irq(netdev->irq); 2901 } 2902 #endif 2903 2904 static const struct net_device_ops atl1_netdev_ops = { 2905 .ndo_open = atl1_open, 2906 .ndo_stop = atl1_close, 2907 .ndo_start_xmit = atl1_xmit_frame, 2908 .ndo_set_rx_mode = atlx_set_multi, 2909 .ndo_validate_addr = eth_validate_addr, 2910 .ndo_set_mac_address = atl1_set_mac, 2911 .ndo_change_mtu = atl1_change_mtu, 2912 .ndo_fix_features = atlx_fix_features, 2913 .ndo_set_features = atlx_set_features, 2914 .ndo_do_ioctl = atlx_ioctl, 2915 .ndo_tx_timeout = atlx_tx_timeout, 2916 #ifdef CONFIG_NET_POLL_CONTROLLER 2917 .ndo_poll_controller = atl1_poll_controller, 2918 #endif 2919 }; 2920 2921 /** 2922 * atl1_probe - Device Initialization Routine 2923 * @pdev: PCI device information struct 2924 * @ent: entry in atl1_pci_tbl 2925 * 2926 * Returns 0 on success, negative on failure 2927 * 2928 * atl1_probe initializes an adapter identified by a pci_dev structure. 2929 * The OS initialization, configuring of the adapter private structure, 2930 * and a hardware reset occur. 2931 */ 2932 static int atl1_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2933 { 2934 struct net_device *netdev; 2935 struct atl1_adapter *adapter; 2936 static int cards_found = 0; 2937 int err; 2938 2939 err = pci_enable_device(pdev); 2940 if (err) 2941 return err; 2942 2943 /* 2944 * The atl1 chip can DMA to 64-bit addresses, but it uses a single 2945 * shared register for the high 32 bits, so only a single, aligned, 2946 * 4 GB physical address range can be used at a time. 2947 * 2948 * Supporting 64-bit DMA on this hardware is more trouble than it's 2949 * worth. It is far easier to limit to 32-bit DMA than update 2950 * various kernel subsystems to support the mechanics required by a 2951 * fixed-high-32-bit system. 2952 */ 2953 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 2954 if (err) { 2955 dev_err(&pdev->dev, "no usable DMA configuration\n"); 2956 goto err_dma; 2957 } 2958 /* 2959 * Mark all PCI regions associated with PCI device 2960 * pdev as being reserved by owner atl1_driver_name 2961 */ 2962 err = pci_request_regions(pdev, ATLX_DRIVER_NAME); 2963 if (err) 2964 goto err_request_regions; 2965 2966 /* 2967 * Enables bus-mastering on the device and calls 2968 * pcibios_set_master to do the needed arch specific settings 2969 */ 2970 pci_set_master(pdev); 2971 2972 netdev = alloc_etherdev(sizeof(struct atl1_adapter)); 2973 if (!netdev) { 2974 err = -ENOMEM; 2975 goto err_alloc_etherdev; 2976 } 2977 SET_NETDEV_DEV(netdev, &pdev->dev); 2978 2979 pci_set_drvdata(pdev, netdev); 2980 adapter = netdev_priv(netdev); 2981 adapter->netdev = netdev; 2982 adapter->pdev = pdev; 2983 adapter->hw.back = adapter; 2984 adapter->msg_enable = netif_msg_init(debug, atl1_default_msg); 2985 2986 adapter->hw.hw_addr = pci_iomap(pdev, 0, 0); 2987 if (!adapter->hw.hw_addr) { 2988 err = -EIO; 2989 goto err_pci_iomap; 2990 } 2991 /* get device revision number */ 2992 adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr + 2993 (REG_MASTER_CTRL + 2)); 2994 if (netif_msg_probe(adapter)) 2995 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION); 2996 2997 /* set default ring resource counts */ 2998 adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD; 2999 adapter->tpd_ring.count = ATL1_DEFAULT_TPD; 3000 3001 adapter->mii.dev = netdev; 3002 adapter->mii.mdio_read = mdio_read; 3003 adapter->mii.mdio_write = mdio_write; 3004 adapter->mii.phy_id_mask = 0x1f; 3005 adapter->mii.reg_num_mask = 0x1f; 3006 3007 netdev->netdev_ops = &atl1_netdev_ops; 3008 netdev->watchdog_timeo = 5 * HZ; 3009 netif_napi_add(netdev, &adapter->napi, atl1_rings_clean, 64); 3010 3011 netdev->ethtool_ops = &atl1_ethtool_ops; 3012 adapter->bd_number = cards_found; 3013 3014 /* setup the private structure */ 3015 err = atl1_sw_init(adapter); 3016 if (err) 3017 goto err_common; 3018 3019 netdev->features = NETIF_F_HW_CSUM; 3020 netdev->features |= NETIF_F_SG; 3021 netdev->features |= (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); 3022 3023 netdev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_TSO | 3024 NETIF_F_HW_VLAN_CTAG_RX; 3025 3026 /* is this valid? see atl1_setup_mac_ctrl() */ 3027 netdev->features |= NETIF_F_RXCSUM; 3028 3029 /* 3030 * patch for some L1 of old version, 3031 * the final version of L1 may not need these 3032 * patches 3033 */ 3034 /* atl1_pcie_patch(adapter); */ 3035 3036 /* really reset GPHY core */ 3037 iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE); 3038 3039 /* 3040 * reset the controller to 3041 * put the device in a known good starting state 3042 */ 3043 if (atl1_reset_hw(&adapter->hw)) { 3044 err = -EIO; 3045 goto err_common; 3046 } 3047 3048 /* copy the MAC address out of the EEPROM */ 3049 if (atl1_read_mac_addr(&adapter->hw)) { 3050 /* mark random mac */ 3051 netdev->addr_assign_type = NET_ADDR_RANDOM; 3052 } 3053 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); 3054 3055 if (!is_valid_ether_addr(netdev->dev_addr)) { 3056 err = -EIO; 3057 goto err_common; 3058 } 3059 3060 atl1_check_options(adapter); 3061 3062 /* pre-init the MAC, and setup link */ 3063 err = atl1_init_hw(&adapter->hw); 3064 if (err) { 3065 err = -EIO; 3066 goto err_common; 3067 } 3068 3069 atl1_pcie_patch(adapter); 3070 /* assume we have no link for now */ 3071 netif_carrier_off(netdev); 3072 3073 setup_timer(&adapter->phy_config_timer, atl1_phy_config, 3074 (unsigned long)adapter); 3075 adapter->phy_timer_pending = false; 3076 3077 INIT_WORK(&adapter->reset_dev_task, atl1_reset_dev_task); 3078 3079 INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task); 3080 3081 err = register_netdev(netdev); 3082 if (err) 3083 goto err_common; 3084 3085 cards_found++; 3086 atl1_via_workaround(adapter); 3087 return 0; 3088 3089 err_common: 3090 pci_iounmap(pdev, adapter->hw.hw_addr); 3091 err_pci_iomap: 3092 free_netdev(netdev); 3093 err_alloc_etherdev: 3094 pci_release_regions(pdev); 3095 err_dma: 3096 err_request_regions: 3097 pci_disable_device(pdev); 3098 return err; 3099 } 3100 3101 /** 3102 * atl1_remove - Device Removal Routine 3103 * @pdev: PCI device information struct 3104 * 3105 * atl1_remove is called by the PCI subsystem to alert the driver 3106 * that it should release a PCI device. The could be caused by a 3107 * Hot-Plug event, or because the driver is going to be removed from 3108 * memory. 3109 */ 3110 static void atl1_remove(struct pci_dev *pdev) 3111 { 3112 struct net_device *netdev = pci_get_drvdata(pdev); 3113 struct atl1_adapter *adapter; 3114 /* Device not available. Return. */ 3115 if (!netdev) 3116 return; 3117 3118 adapter = netdev_priv(netdev); 3119 3120 /* 3121 * Some atl1 boards lack persistent storage for their MAC, and get it 3122 * from the BIOS during POST. If we've been messing with the MAC 3123 * address, we need to save the permanent one. 3124 */ 3125 if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) { 3126 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, 3127 ETH_ALEN); 3128 atl1_set_mac_addr(&adapter->hw); 3129 } 3130 3131 iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE); 3132 unregister_netdev(netdev); 3133 pci_iounmap(pdev, adapter->hw.hw_addr); 3134 pci_release_regions(pdev); 3135 free_netdev(netdev); 3136 pci_disable_device(pdev); 3137 } 3138 3139 static struct pci_driver atl1_driver = { 3140 .name = ATLX_DRIVER_NAME, 3141 .id_table = atl1_pci_tbl, 3142 .probe = atl1_probe, 3143 .remove = atl1_remove, 3144 .shutdown = atl1_shutdown, 3145 .driver.pm = &atl1_pm_ops, 3146 }; 3147 3148 struct atl1_stats { 3149 char stat_string[ETH_GSTRING_LEN]; 3150 int sizeof_stat; 3151 int stat_offset; 3152 }; 3153 3154 #define ATL1_STAT(m) \ 3155 sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m) 3156 3157 static struct atl1_stats atl1_gstrings_stats[] = { 3158 {"rx_packets", ATL1_STAT(soft_stats.rx_packets)}, 3159 {"tx_packets", ATL1_STAT(soft_stats.tx_packets)}, 3160 {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)}, 3161 {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)}, 3162 {"rx_errors", ATL1_STAT(soft_stats.rx_errors)}, 3163 {"tx_errors", ATL1_STAT(soft_stats.tx_errors)}, 3164 {"multicast", ATL1_STAT(soft_stats.multicast)}, 3165 {"collisions", ATL1_STAT(soft_stats.collisions)}, 3166 {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)}, 3167 {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)}, 3168 {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)}, 3169 {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)}, 3170 {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)}, 3171 {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)}, 3172 {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)}, 3173 {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)}, 3174 {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)}, 3175 {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)}, 3176 {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)}, 3177 {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)}, 3178 {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)}, 3179 {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)}, 3180 {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)}, 3181 {"tx_underun", ATL1_STAT(soft_stats.tx_underun)}, 3182 {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)}, 3183 {"tx_pause", ATL1_STAT(soft_stats.tx_pause)}, 3184 {"rx_pause", ATL1_STAT(soft_stats.rx_pause)}, 3185 {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)}, 3186 {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)} 3187 }; 3188 3189 static void atl1_get_ethtool_stats(struct net_device *netdev, 3190 struct ethtool_stats *stats, u64 *data) 3191 { 3192 struct atl1_adapter *adapter = netdev_priv(netdev); 3193 int i; 3194 char *p; 3195 3196 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) { 3197 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset; 3198 data[i] = (atl1_gstrings_stats[i].sizeof_stat == 3199 sizeof(u64)) ? *(u64 *)p : *(u32 *)p; 3200 } 3201 3202 } 3203 3204 static int atl1_get_sset_count(struct net_device *netdev, int sset) 3205 { 3206 switch (sset) { 3207 case ETH_SS_STATS: 3208 return ARRAY_SIZE(atl1_gstrings_stats); 3209 default: 3210 return -EOPNOTSUPP; 3211 } 3212 } 3213 3214 static int atl1_get_settings(struct net_device *netdev, 3215 struct ethtool_cmd *ecmd) 3216 { 3217 struct atl1_adapter *adapter = netdev_priv(netdev); 3218 struct atl1_hw *hw = &adapter->hw; 3219 3220 ecmd->supported = (SUPPORTED_10baseT_Half | 3221 SUPPORTED_10baseT_Full | 3222 SUPPORTED_100baseT_Half | 3223 SUPPORTED_100baseT_Full | 3224 SUPPORTED_1000baseT_Full | 3225 SUPPORTED_Autoneg | SUPPORTED_TP); 3226 ecmd->advertising = ADVERTISED_TP; 3227 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3228 hw->media_type == MEDIA_TYPE_1000M_FULL) { 3229 ecmd->advertising |= ADVERTISED_Autoneg; 3230 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) { 3231 ecmd->advertising |= ADVERTISED_Autoneg; 3232 ecmd->advertising |= 3233 (ADVERTISED_10baseT_Half | 3234 ADVERTISED_10baseT_Full | 3235 ADVERTISED_100baseT_Half | 3236 ADVERTISED_100baseT_Full | 3237 ADVERTISED_1000baseT_Full); 3238 } else 3239 ecmd->advertising |= (ADVERTISED_1000baseT_Full); 3240 } 3241 ecmd->port = PORT_TP; 3242 ecmd->phy_address = 0; 3243 ecmd->transceiver = XCVR_INTERNAL; 3244 3245 if (netif_carrier_ok(adapter->netdev)) { 3246 u16 link_speed, link_duplex; 3247 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex); 3248 ethtool_cmd_speed_set(ecmd, link_speed); 3249 if (link_duplex == FULL_DUPLEX) 3250 ecmd->duplex = DUPLEX_FULL; 3251 else 3252 ecmd->duplex = DUPLEX_HALF; 3253 } else { 3254 ethtool_cmd_speed_set(ecmd, -1); 3255 ecmd->duplex = -1; 3256 } 3257 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3258 hw->media_type == MEDIA_TYPE_1000M_FULL) 3259 ecmd->autoneg = AUTONEG_ENABLE; 3260 else 3261 ecmd->autoneg = AUTONEG_DISABLE; 3262 3263 return 0; 3264 } 3265 3266 static int atl1_set_settings(struct net_device *netdev, 3267 struct ethtool_cmd *ecmd) 3268 { 3269 struct atl1_adapter *adapter = netdev_priv(netdev); 3270 struct atl1_hw *hw = &adapter->hw; 3271 u16 phy_data; 3272 int ret_val = 0; 3273 u16 old_media_type = hw->media_type; 3274 3275 if (netif_running(adapter->netdev)) { 3276 if (netif_msg_link(adapter)) 3277 dev_dbg(&adapter->pdev->dev, 3278 "ethtool shutting down adapter\n"); 3279 atl1_down(adapter); 3280 } 3281 3282 if (ecmd->autoneg == AUTONEG_ENABLE) 3283 hw->media_type = MEDIA_TYPE_AUTO_SENSOR; 3284 else { 3285 u32 speed = ethtool_cmd_speed(ecmd); 3286 if (speed == SPEED_1000) { 3287 if (ecmd->duplex != DUPLEX_FULL) { 3288 if (netif_msg_link(adapter)) 3289 dev_warn(&adapter->pdev->dev, 3290 "1000M half is invalid\n"); 3291 ret_val = -EINVAL; 3292 goto exit_sset; 3293 } 3294 hw->media_type = MEDIA_TYPE_1000M_FULL; 3295 } else if (speed == SPEED_100) { 3296 if (ecmd->duplex == DUPLEX_FULL) 3297 hw->media_type = MEDIA_TYPE_100M_FULL; 3298 else 3299 hw->media_type = MEDIA_TYPE_100M_HALF; 3300 } else { 3301 if (ecmd->duplex == DUPLEX_FULL) 3302 hw->media_type = MEDIA_TYPE_10M_FULL; 3303 else 3304 hw->media_type = MEDIA_TYPE_10M_HALF; 3305 } 3306 } 3307 switch (hw->media_type) { 3308 case MEDIA_TYPE_AUTO_SENSOR: 3309 ecmd->advertising = 3310 ADVERTISED_10baseT_Half | 3311 ADVERTISED_10baseT_Full | 3312 ADVERTISED_100baseT_Half | 3313 ADVERTISED_100baseT_Full | 3314 ADVERTISED_1000baseT_Full | 3315 ADVERTISED_Autoneg | ADVERTISED_TP; 3316 break; 3317 case MEDIA_TYPE_1000M_FULL: 3318 ecmd->advertising = 3319 ADVERTISED_1000baseT_Full | 3320 ADVERTISED_Autoneg | ADVERTISED_TP; 3321 break; 3322 default: 3323 ecmd->advertising = 0; 3324 break; 3325 } 3326 if (atl1_phy_setup_autoneg_adv(hw)) { 3327 ret_val = -EINVAL; 3328 if (netif_msg_link(adapter)) 3329 dev_warn(&adapter->pdev->dev, 3330 "invalid ethtool speed/duplex setting\n"); 3331 goto exit_sset; 3332 } 3333 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3334 hw->media_type == MEDIA_TYPE_1000M_FULL) 3335 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN; 3336 else { 3337 switch (hw->media_type) { 3338 case MEDIA_TYPE_100M_FULL: 3339 phy_data = 3340 MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 | 3341 MII_CR_RESET; 3342 break; 3343 case MEDIA_TYPE_100M_HALF: 3344 phy_data = MII_CR_SPEED_100 | MII_CR_RESET; 3345 break; 3346 case MEDIA_TYPE_10M_FULL: 3347 phy_data = 3348 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET; 3349 break; 3350 default: 3351 /* MEDIA_TYPE_10M_HALF: */ 3352 phy_data = MII_CR_SPEED_10 | MII_CR_RESET; 3353 break; 3354 } 3355 } 3356 atl1_write_phy_reg(hw, MII_BMCR, phy_data); 3357 exit_sset: 3358 if (ret_val) 3359 hw->media_type = old_media_type; 3360 3361 if (netif_running(adapter->netdev)) { 3362 if (netif_msg_link(adapter)) 3363 dev_dbg(&adapter->pdev->dev, 3364 "ethtool starting adapter\n"); 3365 atl1_up(adapter); 3366 } else if (!ret_val) { 3367 if (netif_msg_link(adapter)) 3368 dev_dbg(&adapter->pdev->dev, 3369 "ethtool resetting adapter\n"); 3370 atl1_reset(adapter); 3371 } 3372 return ret_val; 3373 } 3374 3375 static void atl1_get_drvinfo(struct net_device *netdev, 3376 struct ethtool_drvinfo *drvinfo) 3377 { 3378 struct atl1_adapter *adapter = netdev_priv(netdev); 3379 3380 strlcpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver)); 3381 strlcpy(drvinfo->version, ATLX_DRIVER_VERSION, 3382 sizeof(drvinfo->version)); 3383 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 3384 sizeof(drvinfo->bus_info)); 3385 drvinfo->eedump_len = ATL1_EEDUMP_LEN; 3386 } 3387 3388 static void atl1_get_wol(struct net_device *netdev, 3389 struct ethtool_wolinfo *wol) 3390 { 3391 struct atl1_adapter *adapter = netdev_priv(netdev); 3392 3393 wol->supported = WAKE_MAGIC; 3394 wol->wolopts = 0; 3395 if (adapter->wol & ATLX_WUFC_MAG) 3396 wol->wolopts |= WAKE_MAGIC; 3397 } 3398 3399 static int atl1_set_wol(struct net_device *netdev, 3400 struct ethtool_wolinfo *wol) 3401 { 3402 struct atl1_adapter *adapter = netdev_priv(netdev); 3403 3404 if (wol->wolopts & (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | 3405 WAKE_ARP | WAKE_MAGICSECURE)) 3406 return -EOPNOTSUPP; 3407 adapter->wol = 0; 3408 if (wol->wolopts & WAKE_MAGIC) 3409 adapter->wol |= ATLX_WUFC_MAG; 3410 3411 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 3412 3413 return 0; 3414 } 3415 3416 static u32 atl1_get_msglevel(struct net_device *netdev) 3417 { 3418 struct atl1_adapter *adapter = netdev_priv(netdev); 3419 return adapter->msg_enable; 3420 } 3421 3422 static void atl1_set_msglevel(struct net_device *netdev, u32 value) 3423 { 3424 struct atl1_adapter *adapter = netdev_priv(netdev); 3425 adapter->msg_enable = value; 3426 } 3427 3428 static int atl1_get_regs_len(struct net_device *netdev) 3429 { 3430 return ATL1_REG_COUNT * sizeof(u32); 3431 } 3432 3433 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs, 3434 void *p) 3435 { 3436 struct atl1_adapter *adapter = netdev_priv(netdev); 3437 struct atl1_hw *hw = &adapter->hw; 3438 unsigned int i; 3439 u32 *regbuf = p; 3440 3441 for (i = 0; i < ATL1_REG_COUNT; i++) { 3442 /* 3443 * This switch statement avoids reserved regions 3444 * of register space. 3445 */ 3446 switch (i) { 3447 case 6 ... 9: 3448 case 14: 3449 case 29 ... 31: 3450 case 34 ... 63: 3451 case 75 ... 127: 3452 case 136 ... 1023: 3453 case 1027 ... 1087: 3454 case 1091 ... 1151: 3455 case 1194 ... 1195: 3456 case 1200 ... 1201: 3457 case 1206 ... 1213: 3458 case 1216 ... 1279: 3459 case 1290 ... 1311: 3460 case 1323 ... 1343: 3461 case 1358 ... 1359: 3462 case 1368 ... 1375: 3463 case 1378 ... 1383: 3464 case 1388 ... 1391: 3465 case 1393 ... 1395: 3466 case 1402 ... 1403: 3467 case 1410 ... 1471: 3468 case 1522 ... 1535: 3469 /* reserved region; don't read it */ 3470 regbuf[i] = 0; 3471 break; 3472 default: 3473 /* unreserved region */ 3474 regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32))); 3475 } 3476 } 3477 } 3478 3479 static void atl1_get_ringparam(struct net_device *netdev, 3480 struct ethtool_ringparam *ring) 3481 { 3482 struct atl1_adapter *adapter = netdev_priv(netdev); 3483 struct atl1_tpd_ring *txdr = &adapter->tpd_ring; 3484 struct atl1_rfd_ring *rxdr = &adapter->rfd_ring; 3485 3486 ring->rx_max_pending = ATL1_MAX_RFD; 3487 ring->tx_max_pending = ATL1_MAX_TPD; 3488 ring->rx_pending = rxdr->count; 3489 ring->tx_pending = txdr->count; 3490 } 3491 3492 static int atl1_set_ringparam(struct net_device *netdev, 3493 struct ethtool_ringparam *ring) 3494 { 3495 struct atl1_adapter *adapter = netdev_priv(netdev); 3496 struct atl1_tpd_ring *tpdr = &adapter->tpd_ring; 3497 struct atl1_rrd_ring *rrdr = &adapter->rrd_ring; 3498 struct atl1_rfd_ring *rfdr = &adapter->rfd_ring; 3499 3500 struct atl1_tpd_ring tpd_old, tpd_new; 3501 struct atl1_rfd_ring rfd_old, rfd_new; 3502 struct atl1_rrd_ring rrd_old, rrd_new; 3503 struct atl1_ring_header rhdr_old, rhdr_new; 3504 struct atl1_smb smb; 3505 struct atl1_cmb cmb; 3506 int err; 3507 3508 tpd_old = adapter->tpd_ring; 3509 rfd_old = adapter->rfd_ring; 3510 rrd_old = adapter->rrd_ring; 3511 rhdr_old = adapter->ring_header; 3512 3513 if (netif_running(adapter->netdev)) 3514 atl1_down(adapter); 3515 3516 rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD); 3517 rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD : 3518 rfdr->count; 3519 rfdr->count = (rfdr->count + 3) & ~3; 3520 rrdr->count = rfdr->count; 3521 3522 tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD); 3523 tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD : 3524 tpdr->count; 3525 tpdr->count = (tpdr->count + 3) & ~3; 3526 3527 if (netif_running(adapter->netdev)) { 3528 /* try to get new resources before deleting old */ 3529 err = atl1_setup_ring_resources(adapter); 3530 if (err) 3531 goto err_setup_ring; 3532 3533 /* 3534 * save the new, restore the old in order to free it, 3535 * then restore the new back again 3536 */ 3537 3538 rfd_new = adapter->rfd_ring; 3539 rrd_new = adapter->rrd_ring; 3540 tpd_new = adapter->tpd_ring; 3541 rhdr_new = adapter->ring_header; 3542 adapter->rfd_ring = rfd_old; 3543 adapter->rrd_ring = rrd_old; 3544 adapter->tpd_ring = tpd_old; 3545 adapter->ring_header = rhdr_old; 3546 /* 3547 * Save SMB and CMB, since atl1_free_ring_resources 3548 * will clear them. 3549 */ 3550 smb = adapter->smb; 3551 cmb = adapter->cmb; 3552 atl1_free_ring_resources(adapter); 3553 adapter->rfd_ring = rfd_new; 3554 adapter->rrd_ring = rrd_new; 3555 adapter->tpd_ring = tpd_new; 3556 adapter->ring_header = rhdr_new; 3557 adapter->smb = smb; 3558 adapter->cmb = cmb; 3559 3560 err = atl1_up(adapter); 3561 if (err) 3562 return err; 3563 } 3564 return 0; 3565 3566 err_setup_ring: 3567 adapter->rfd_ring = rfd_old; 3568 adapter->rrd_ring = rrd_old; 3569 adapter->tpd_ring = tpd_old; 3570 adapter->ring_header = rhdr_old; 3571 atl1_up(adapter); 3572 return err; 3573 } 3574 3575 static void atl1_get_pauseparam(struct net_device *netdev, 3576 struct ethtool_pauseparam *epause) 3577 { 3578 struct atl1_adapter *adapter = netdev_priv(netdev); 3579 struct atl1_hw *hw = &adapter->hw; 3580 3581 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3582 hw->media_type == MEDIA_TYPE_1000M_FULL) { 3583 epause->autoneg = AUTONEG_ENABLE; 3584 } else { 3585 epause->autoneg = AUTONEG_DISABLE; 3586 } 3587 epause->rx_pause = 1; 3588 epause->tx_pause = 1; 3589 } 3590 3591 static int atl1_set_pauseparam(struct net_device *netdev, 3592 struct ethtool_pauseparam *epause) 3593 { 3594 struct atl1_adapter *adapter = netdev_priv(netdev); 3595 struct atl1_hw *hw = &adapter->hw; 3596 3597 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3598 hw->media_type == MEDIA_TYPE_1000M_FULL) { 3599 epause->autoneg = AUTONEG_ENABLE; 3600 } else { 3601 epause->autoneg = AUTONEG_DISABLE; 3602 } 3603 3604 epause->rx_pause = 1; 3605 epause->tx_pause = 1; 3606 3607 return 0; 3608 } 3609 3610 static void atl1_get_strings(struct net_device *netdev, u32 stringset, 3611 u8 *data) 3612 { 3613 u8 *p = data; 3614 int i; 3615 3616 switch (stringset) { 3617 case ETH_SS_STATS: 3618 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) { 3619 memcpy(p, atl1_gstrings_stats[i].stat_string, 3620 ETH_GSTRING_LEN); 3621 p += ETH_GSTRING_LEN; 3622 } 3623 break; 3624 } 3625 } 3626 3627 static int atl1_nway_reset(struct net_device *netdev) 3628 { 3629 struct atl1_adapter *adapter = netdev_priv(netdev); 3630 struct atl1_hw *hw = &adapter->hw; 3631 3632 if (netif_running(netdev)) { 3633 u16 phy_data; 3634 atl1_down(adapter); 3635 3636 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR || 3637 hw->media_type == MEDIA_TYPE_1000M_FULL) { 3638 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN; 3639 } else { 3640 switch (hw->media_type) { 3641 case MEDIA_TYPE_100M_FULL: 3642 phy_data = MII_CR_FULL_DUPLEX | 3643 MII_CR_SPEED_100 | MII_CR_RESET; 3644 break; 3645 case MEDIA_TYPE_100M_HALF: 3646 phy_data = MII_CR_SPEED_100 | MII_CR_RESET; 3647 break; 3648 case MEDIA_TYPE_10M_FULL: 3649 phy_data = MII_CR_FULL_DUPLEX | 3650 MII_CR_SPEED_10 | MII_CR_RESET; 3651 break; 3652 default: 3653 /* MEDIA_TYPE_10M_HALF */ 3654 phy_data = MII_CR_SPEED_10 | MII_CR_RESET; 3655 } 3656 } 3657 atl1_write_phy_reg(hw, MII_BMCR, phy_data); 3658 atl1_up(adapter); 3659 } 3660 return 0; 3661 } 3662 3663 static const struct ethtool_ops atl1_ethtool_ops = { 3664 .get_settings = atl1_get_settings, 3665 .set_settings = atl1_set_settings, 3666 .get_drvinfo = atl1_get_drvinfo, 3667 .get_wol = atl1_get_wol, 3668 .set_wol = atl1_set_wol, 3669 .get_msglevel = atl1_get_msglevel, 3670 .set_msglevel = atl1_set_msglevel, 3671 .get_regs_len = atl1_get_regs_len, 3672 .get_regs = atl1_get_regs, 3673 .get_ringparam = atl1_get_ringparam, 3674 .set_ringparam = atl1_set_ringparam, 3675 .get_pauseparam = atl1_get_pauseparam, 3676 .set_pauseparam = atl1_set_pauseparam, 3677 .get_link = ethtool_op_get_link, 3678 .get_strings = atl1_get_strings, 3679 .nway_reset = atl1_nway_reset, 3680 .get_ethtool_stats = atl1_get_ethtool_stats, 3681 .get_sset_count = atl1_get_sset_count, 3682 }; 3683 3684 module_pci_driver(atl1_driver); 3685