1 /* 2 * This code is derived from the VIA reference driver (copyright message 3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for 4 * addition to the Linux kernel. 5 * 6 * The code has been merged into one source file, cleaned up to follow 7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned 8 * for 64bit hardware platforms. 9 * 10 * TODO 11 * rx_copybreak/alignment 12 * More testing 13 * 14 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk> 15 * Additional fixes and clean up: Francois Romieu 16 * 17 * This source has not been verified for use in safety critical systems. 18 * 19 * Please direct queries about the revamped driver to the linux-kernel 20 * list not VIA. 21 * 22 * Original code: 23 * 24 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. 25 * All rights reserved. 26 * 27 * This software may be redistributed and/or modified under 28 * the terms of the GNU General Public License as published by the Free 29 * Software Foundation; either version 2 of the License, or 30 * any later version. 31 * 32 * This program is distributed in the hope that it will be useful, but 33 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 34 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 35 * for more details. 36 * 37 * Author: Chuang Liang-Shing, AJ Jiang 38 * 39 * Date: Jan 24, 2003 40 * 41 * MODULE_LICENSE("GPL"); 42 * 43 */ 44 45 #include <linux/module.h> 46 #include <linux/types.h> 47 #include <linux/bitops.h> 48 #include <linux/init.h> 49 #include <linux/mm.h> 50 #include <linux/errno.h> 51 #include <linux/ioport.h> 52 #include <linux/pci.h> 53 #include <linux/kernel.h> 54 #include <linux/netdevice.h> 55 #include <linux/etherdevice.h> 56 #include <linux/skbuff.h> 57 #include <linux/delay.h> 58 #include <linux/timer.h> 59 #include <linux/slab.h> 60 #include <linux/interrupt.h> 61 #include <linux/string.h> 62 #include <linux/wait.h> 63 #include <linux/io.h> 64 #include <linux/if.h> 65 #include <linux/uaccess.h> 66 #include <linux/proc_fs.h> 67 #include <linux/inetdevice.h> 68 #include <linux/reboot.h> 69 #include <linux/ethtool.h> 70 #include <linux/mii.h> 71 #include <linux/in.h> 72 #include <linux/if_arp.h> 73 #include <linux/if_vlan.h> 74 #include <linux/ip.h> 75 #include <linux/tcp.h> 76 #include <linux/udp.h> 77 #include <linux/crc-ccitt.h> 78 #include <linux/crc32.h> 79 80 #include "via-velocity.h" 81 82 83 static int velocity_nics; 84 static int msglevel = MSG_LEVEL_INFO; 85 86 /** 87 * mac_get_cam_mask - Read a CAM mask 88 * @regs: register block for this velocity 89 * @mask: buffer to store mask 90 * 91 * Fetch the mask bits of the selected CAM and store them into the 92 * provided mask buffer. 93 */ 94 static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask) 95 { 96 int i; 97 98 /* Select CAM mask */ 99 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 100 101 writeb(0, ®s->CAMADDR); 102 103 /* read mask */ 104 for (i = 0; i < 8; i++) 105 *mask++ = readb(&(regs->MARCAM[i])); 106 107 /* disable CAMEN */ 108 writeb(0, ®s->CAMADDR); 109 110 /* Select mar */ 111 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 112 } 113 114 /** 115 * mac_set_cam_mask - Set a CAM mask 116 * @regs: register block for this velocity 117 * @mask: CAM mask to load 118 * 119 * Store a new mask into a CAM 120 */ 121 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask) 122 { 123 int i; 124 /* Select CAM mask */ 125 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 126 127 writeb(CAMADDR_CAMEN, ®s->CAMADDR); 128 129 for (i = 0; i < 8; i++) 130 writeb(*mask++, &(regs->MARCAM[i])); 131 132 /* disable CAMEN */ 133 writeb(0, ®s->CAMADDR); 134 135 /* Select mar */ 136 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 137 } 138 139 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask) 140 { 141 int i; 142 /* Select CAM mask */ 143 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 144 145 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR); 146 147 for (i = 0; i < 8; i++) 148 writeb(*mask++, &(regs->MARCAM[i])); 149 150 /* disable CAMEN */ 151 writeb(0, ®s->CAMADDR); 152 153 /* Select mar */ 154 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 155 } 156 157 /** 158 * mac_set_cam - set CAM data 159 * @regs: register block of this velocity 160 * @idx: Cam index 161 * @addr: 2 or 6 bytes of CAM data 162 * 163 * Load an address or vlan tag into a CAM 164 */ 165 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr) 166 { 167 int i; 168 169 /* Select CAM mask */ 170 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 171 172 idx &= (64 - 1); 173 174 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR); 175 176 for (i = 0; i < 6; i++) 177 writeb(*addr++, &(regs->MARCAM[i])); 178 179 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR); 180 181 udelay(10); 182 183 writeb(0, ®s->CAMADDR); 184 185 /* Select mar */ 186 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 187 } 188 189 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx, 190 const u8 *addr) 191 { 192 193 /* Select CAM mask */ 194 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 195 196 idx &= (64 - 1); 197 198 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR); 199 writew(*((u16 *) addr), ®s->MARCAM[0]); 200 201 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR); 202 203 udelay(10); 204 205 writeb(0, ®s->CAMADDR); 206 207 /* Select mar */ 208 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); 209 } 210 211 212 /** 213 * mac_wol_reset - reset WOL after exiting low power 214 * @regs: register block of this velocity 215 * 216 * Called after we drop out of wake on lan mode in order to 217 * reset the Wake on lan features. This function doesn't restore 218 * the rest of the logic from the result of sleep/wakeup 219 */ 220 static void mac_wol_reset(struct mac_regs __iomem *regs) 221 { 222 223 /* Turn off SWPTAG right after leaving power mode */ 224 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW); 225 /* clear sticky bits */ 226 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW); 227 228 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR); 229 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR); 230 /* disable force PME-enable */ 231 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr); 232 /* disable power-event config bit */ 233 writew(0xFFFF, ®s->WOLCRClr); 234 /* clear power status */ 235 writew(0xFFFF, ®s->WOLSRClr); 236 } 237 238 static const struct ethtool_ops velocity_ethtool_ops; 239 240 /* 241 Define module options 242 */ 243 244 MODULE_AUTHOR("VIA Networking Technologies, Inc."); 245 MODULE_LICENSE("GPL"); 246 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver"); 247 248 #define VELOCITY_PARAM(N, D) \ 249 static int N[MAX_UNITS] = OPTION_DEFAULT;\ 250 module_param_array(N, int, NULL, 0); \ 251 MODULE_PARM_DESC(N, D); 252 253 #define RX_DESC_MIN 64 254 #define RX_DESC_MAX 255 255 #define RX_DESC_DEF 64 256 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors"); 257 258 #define TX_DESC_MIN 16 259 #define TX_DESC_MAX 256 260 #define TX_DESC_DEF 64 261 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors"); 262 263 #define RX_THRESH_MIN 0 264 #define RX_THRESH_MAX 3 265 #define RX_THRESH_DEF 0 266 /* rx_thresh[] is used for controlling the receive fifo threshold. 267 0: indicate the rxfifo threshold is 128 bytes. 268 1: indicate the rxfifo threshold is 512 bytes. 269 2: indicate the rxfifo threshold is 1024 bytes. 270 3: indicate the rxfifo threshold is store & forward. 271 */ 272 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold"); 273 274 #define DMA_LENGTH_MIN 0 275 #define DMA_LENGTH_MAX 7 276 #define DMA_LENGTH_DEF 6 277 278 /* DMA_length[] is used for controlling the DMA length 279 0: 8 DWORDs 280 1: 16 DWORDs 281 2: 32 DWORDs 282 3: 64 DWORDs 283 4: 128 DWORDs 284 5: 256 DWORDs 285 6: SF(flush till emply) 286 7: SF(flush till emply) 287 */ 288 VELOCITY_PARAM(DMA_length, "DMA length"); 289 290 #define IP_ALIG_DEF 0 291 /* IP_byte_align[] is used for IP header DWORD byte aligned 292 0: indicate the IP header won't be DWORD byte aligned.(Default) . 293 1: indicate the IP header will be DWORD byte aligned. 294 In some environment, the IP header should be DWORD byte aligned, 295 or the packet will be droped when we receive it. (eg: IPVS) 296 */ 297 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned"); 298 299 #define FLOW_CNTL_DEF 1 300 #define FLOW_CNTL_MIN 1 301 #define FLOW_CNTL_MAX 5 302 303 /* flow_control[] is used for setting the flow control ability of NIC. 304 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR. 305 2: enable TX flow control. 306 3: enable RX flow control. 307 4: enable RX/TX flow control. 308 5: disable 309 */ 310 VELOCITY_PARAM(flow_control, "Enable flow control ability"); 311 312 #define MED_LNK_DEF 0 313 #define MED_LNK_MIN 0 314 #define MED_LNK_MAX 5 315 /* speed_duplex[] is used for setting the speed and duplex mode of NIC. 316 0: indicate autonegotiation for both speed and duplex mode 317 1: indicate 100Mbps half duplex mode 318 2: indicate 100Mbps full duplex mode 319 3: indicate 10Mbps half duplex mode 320 4: indicate 10Mbps full duplex mode 321 5: indicate 1000Mbps full duplex mode 322 323 Note: 324 if EEPROM have been set to the force mode, this option is ignored 325 by driver. 326 */ 327 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode"); 328 329 #define VAL_PKT_LEN_DEF 0 330 /* ValPktLen[] is used for setting the checksum offload ability of NIC. 331 0: Receive frame with invalid layer 2 length (Default) 332 1: Drop frame with invalid layer 2 length 333 */ 334 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame"); 335 336 #define WOL_OPT_DEF 0 337 #define WOL_OPT_MIN 0 338 #define WOL_OPT_MAX 7 339 /* wol_opts[] is used for controlling wake on lan behavior. 340 0: Wake up if recevied a magic packet. (Default) 341 1: Wake up if link status is on/off. 342 2: Wake up if recevied an arp packet. 343 4: Wake up if recevied any unicast packet. 344 Those value can be sumed up to support more than one option. 345 */ 346 VELOCITY_PARAM(wol_opts, "Wake On Lan options"); 347 348 static int rx_copybreak = 200; 349 module_param(rx_copybreak, int, 0644); 350 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames"); 351 352 /* 353 * Internal board variants. At the moment we have only one 354 */ 355 static struct velocity_info_tbl chip_info_table[] = { 356 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL}, 357 { } 358 }; 359 360 /* 361 * Describe the PCI device identifiers that we support in this 362 * device driver. Used for hotplug autoloading. 363 */ 364 static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = { 365 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) }, 366 { } 367 }; 368 369 MODULE_DEVICE_TABLE(pci, velocity_id_table); 370 371 /** 372 * get_chip_name - identifier to name 373 * @id: chip identifier 374 * 375 * Given a chip identifier return a suitable description. Returns 376 * a pointer a static string valid while the driver is loaded. 377 */ 378 static const char *get_chip_name(enum chip_type chip_id) 379 { 380 int i; 381 for (i = 0; chip_info_table[i].name != NULL; i++) 382 if (chip_info_table[i].chip_id == chip_id) 383 break; 384 return chip_info_table[i].name; 385 } 386 387 /** 388 * velocity_remove1 - device unplug 389 * @pdev: PCI device being removed 390 * 391 * Device unload callback. Called on an unplug or on module 392 * unload for each active device that is present. Disconnects 393 * the device from the network layer and frees all the resources 394 */ 395 static void velocity_remove1(struct pci_dev *pdev) 396 { 397 struct net_device *dev = pci_get_drvdata(pdev); 398 struct velocity_info *vptr = netdev_priv(dev); 399 400 unregister_netdev(dev); 401 iounmap(vptr->mac_regs); 402 pci_release_regions(pdev); 403 pci_disable_device(pdev); 404 pci_set_drvdata(pdev, NULL); 405 free_netdev(dev); 406 407 velocity_nics--; 408 } 409 410 /** 411 * velocity_set_int_opt - parser for integer options 412 * @opt: pointer to option value 413 * @val: value the user requested (or -1 for default) 414 * @min: lowest value allowed 415 * @max: highest value allowed 416 * @def: default value 417 * @name: property name 418 * @dev: device name 419 * 420 * Set an integer property in the module options. This function does 421 * all the verification and checking as well as reporting so that 422 * we don't duplicate code for each option. 423 */ 424 static void velocity_set_int_opt(int *opt, int val, int min, int max, int def, 425 char *name, const char *devname) 426 { 427 if (val == -1) 428 *opt = def; 429 else if (val < min || val > max) { 430 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n", 431 devname, name, min, max); 432 *opt = def; 433 } else { 434 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n", 435 devname, name, val); 436 *opt = val; 437 } 438 } 439 440 /** 441 * velocity_set_bool_opt - parser for boolean options 442 * @opt: pointer to option value 443 * @val: value the user requested (or -1 for default) 444 * @def: default value (yes/no) 445 * @flag: numeric value to set for true. 446 * @name: property name 447 * @dev: device name 448 * 449 * Set a boolean property in the module options. This function does 450 * all the verification and checking as well as reporting so that 451 * we don't duplicate code for each option. 452 */ 453 static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, 454 char *name, const char *devname) 455 { 456 (*opt) &= (~flag); 457 if (val == -1) 458 *opt |= (def ? flag : 0); 459 else if (val < 0 || val > 1) { 460 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n", 461 devname, name); 462 *opt |= (def ? flag : 0); 463 } else { 464 printk(KERN_INFO "%s: set parameter %s to %s\n", 465 devname, name, val ? "TRUE" : "FALSE"); 466 *opt |= (val ? flag : 0); 467 } 468 } 469 470 /** 471 * velocity_get_options - set options on device 472 * @opts: option structure for the device 473 * @index: index of option to use in module options array 474 * @devname: device name 475 * 476 * Turn the module and command options into a single structure 477 * for the current device 478 */ 479 static void velocity_get_options(struct velocity_opt *opts, int index, 480 const char *devname) 481 { 482 483 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname); 484 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname); 485 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname); 486 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname); 487 488 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname); 489 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname); 490 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname); 491 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname); 492 velocity_set_int_opt(&opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname); 493 opts->numrx = (opts->numrx & ~3); 494 } 495 496 /** 497 * velocity_init_cam_filter - initialise CAM 498 * @vptr: velocity to program 499 * 500 * Initialize the content addressable memory used for filters. Load 501 * appropriately according to the presence of VLAN 502 */ 503 static void velocity_init_cam_filter(struct velocity_info *vptr) 504 { 505 struct mac_regs __iomem *regs = vptr->mac_regs; 506 unsigned int vid, i = 0; 507 508 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */ 509 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG); 510 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG); 511 512 /* Disable all CAMs */ 513 memset(vptr->vCAMmask, 0, sizeof(u8) * 8); 514 memset(vptr->mCAMmask, 0, sizeof(u8) * 8); 515 mac_set_vlan_cam_mask(regs, vptr->vCAMmask); 516 mac_set_cam_mask(regs, vptr->mCAMmask); 517 518 /* Enable VCAMs */ 519 for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) { 520 mac_set_vlan_cam(regs, i, (u8 *) &vid); 521 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8); 522 if (++i >= VCAM_SIZE) 523 break; 524 } 525 mac_set_vlan_cam_mask(regs, vptr->vCAMmask); 526 } 527 528 static int velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 529 { 530 struct velocity_info *vptr = netdev_priv(dev); 531 532 spin_lock_irq(&vptr->lock); 533 set_bit(vid, vptr->active_vlans); 534 velocity_init_cam_filter(vptr); 535 spin_unlock_irq(&vptr->lock); 536 return 0; 537 } 538 539 static int velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 540 { 541 struct velocity_info *vptr = netdev_priv(dev); 542 543 spin_lock_irq(&vptr->lock); 544 clear_bit(vid, vptr->active_vlans); 545 velocity_init_cam_filter(vptr); 546 spin_unlock_irq(&vptr->lock); 547 return 0; 548 } 549 550 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr) 551 { 552 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0; 553 } 554 555 /** 556 * velocity_rx_reset - handle a receive reset 557 * @vptr: velocity we are resetting 558 * 559 * Reset the ownership and status for the receive ring side. 560 * Hand all the receive queue to the NIC. 561 */ 562 static void velocity_rx_reset(struct velocity_info *vptr) 563 { 564 565 struct mac_regs __iomem *regs = vptr->mac_regs; 566 int i; 567 568 velocity_init_rx_ring_indexes(vptr); 569 570 /* 571 * Init state, all RD entries belong to the NIC 572 */ 573 for (i = 0; i < vptr->options.numrx; ++i) 574 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC; 575 576 writew(vptr->options.numrx, ®s->RBRDU); 577 writel(vptr->rx.pool_dma, ®s->RDBaseLo); 578 writew(0, ®s->RDIdx); 579 writew(vptr->options.numrx - 1, ®s->RDCSize); 580 } 581 582 /** 583 * velocity_get_opt_media_mode - get media selection 584 * @vptr: velocity adapter 585 * 586 * Get the media mode stored in EEPROM or module options and load 587 * mii_status accordingly. The requested link state information 588 * is also returned. 589 */ 590 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr) 591 { 592 u32 status = 0; 593 594 switch (vptr->options.spd_dpx) { 595 case SPD_DPX_AUTO: 596 status = VELOCITY_AUTONEG_ENABLE; 597 break; 598 case SPD_DPX_100_FULL: 599 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL; 600 break; 601 case SPD_DPX_10_FULL: 602 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL; 603 break; 604 case SPD_DPX_100_HALF: 605 status = VELOCITY_SPEED_100; 606 break; 607 case SPD_DPX_10_HALF: 608 status = VELOCITY_SPEED_10; 609 break; 610 case SPD_DPX_1000_FULL: 611 status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL; 612 break; 613 } 614 vptr->mii_status = status; 615 return status; 616 } 617 618 /** 619 * safe_disable_mii_autopoll - autopoll off 620 * @regs: velocity registers 621 * 622 * Turn off the autopoll and wait for it to disable on the chip 623 */ 624 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs) 625 { 626 u16 ww; 627 628 /* turn off MAUTO */ 629 writeb(0, ®s->MIICR); 630 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { 631 udelay(1); 632 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) 633 break; 634 } 635 } 636 637 /** 638 * enable_mii_autopoll - turn on autopolling 639 * @regs: velocity registers 640 * 641 * Enable the MII link status autopoll feature on the Velocity 642 * hardware. Wait for it to enable. 643 */ 644 static void enable_mii_autopoll(struct mac_regs __iomem *regs) 645 { 646 int ii; 647 648 writeb(0, &(regs->MIICR)); 649 writeb(MIIADR_SWMPL, ®s->MIIADR); 650 651 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) { 652 udelay(1); 653 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) 654 break; 655 } 656 657 writeb(MIICR_MAUTO, ®s->MIICR); 658 659 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) { 660 udelay(1); 661 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) 662 break; 663 } 664 665 } 666 667 /** 668 * velocity_mii_read - read MII data 669 * @regs: velocity registers 670 * @index: MII register index 671 * @data: buffer for received data 672 * 673 * Perform a single read of an MII 16bit register. Returns zero 674 * on success or -ETIMEDOUT if the PHY did not respond. 675 */ 676 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data) 677 { 678 u16 ww; 679 680 /* 681 * Disable MIICR_MAUTO, so that mii addr can be set normally 682 */ 683 safe_disable_mii_autopoll(regs); 684 685 writeb(index, ®s->MIIADR); 686 687 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR); 688 689 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { 690 if (!(readb(®s->MIICR) & MIICR_RCMD)) 691 break; 692 } 693 694 *data = readw(®s->MIIDATA); 695 696 enable_mii_autopoll(regs); 697 if (ww == W_MAX_TIMEOUT) 698 return -ETIMEDOUT; 699 return 0; 700 } 701 702 /** 703 * mii_check_media_mode - check media state 704 * @regs: velocity registers 705 * 706 * Check the current MII status and determine the link status 707 * accordingly 708 */ 709 static u32 mii_check_media_mode(struct mac_regs __iomem *regs) 710 { 711 u32 status = 0; 712 u16 ANAR; 713 714 if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs)) 715 status |= VELOCITY_LINK_FAIL; 716 717 if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs)) 718 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL; 719 else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs)) 720 status |= (VELOCITY_SPEED_1000); 721 else { 722 velocity_mii_read(regs, MII_ADVERTISE, &ANAR); 723 if (ANAR & ADVERTISE_100FULL) 724 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL); 725 else if (ANAR & ADVERTISE_100HALF) 726 status |= VELOCITY_SPEED_100; 727 else if (ANAR & ADVERTISE_10FULL) 728 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL); 729 else 730 status |= (VELOCITY_SPEED_10); 731 } 732 733 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) { 734 velocity_mii_read(regs, MII_ADVERTISE, &ANAR); 735 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) 736 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) { 737 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs)) 738 status |= VELOCITY_AUTONEG_ENABLE; 739 } 740 } 741 742 return status; 743 } 744 745 /** 746 * velocity_mii_write - write MII data 747 * @regs: velocity registers 748 * @index: MII register index 749 * @data: 16bit data for the MII register 750 * 751 * Perform a single write to an MII 16bit register. Returns zero 752 * on success or -ETIMEDOUT if the PHY did not respond. 753 */ 754 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data) 755 { 756 u16 ww; 757 758 /* 759 * Disable MIICR_MAUTO, so that mii addr can be set normally 760 */ 761 safe_disable_mii_autopoll(regs); 762 763 /* MII reg offset */ 764 writeb(mii_addr, ®s->MIIADR); 765 /* set MII data */ 766 writew(data, ®s->MIIDATA); 767 768 /* turn on MIICR_WCMD */ 769 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR); 770 771 /* W_MAX_TIMEOUT is the timeout period */ 772 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { 773 udelay(5); 774 if (!(readb(®s->MIICR) & MIICR_WCMD)) 775 break; 776 } 777 enable_mii_autopoll(regs); 778 779 if (ww == W_MAX_TIMEOUT) 780 return -ETIMEDOUT; 781 return 0; 782 } 783 784 /** 785 * set_mii_flow_control - flow control setup 786 * @vptr: velocity interface 787 * 788 * Set up the flow control on this interface according to 789 * the supplied user/eeprom options. 790 */ 791 static void set_mii_flow_control(struct velocity_info *vptr) 792 { 793 /*Enable or Disable PAUSE in ANAR */ 794 switch (vptr->options.flow_cntl) { 795 case FLOW_CNTL_TX: 796 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); 797 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); 798 break; 799 800 case FLOW_CNTL_RX: 801 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); 802 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); 803 break; 804 805 case FLOW_CNTL_TX_RX: 806 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); 807 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); 808 break; 809 810 case FLOW_CNTL_DISABLE: 811 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); 812 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); 813 break; 814 default: 815 break; 816 } 817 } 818 819 /** 820 * mii_set_auto_on - autonegotiate on 821 * @vptr: velocity 822 * 823 * Enable autonegotation on this interface 824 */ 825 static void mii_set_auto_on(struct velocity_info *vptr) 826 { 827 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs)) 828 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs); 829 else 830 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); 831 } 832 833 static u32 check_connection_type(struct mac_regs __iomem *regs) 834 { 835 u32 status = 0; 836 u8 PHYSR0; 837 u16 ANAR; 838 PHYSR0 = readb(®s->PHYSR0); 839 840 /* 841 if (!(PHYSR0 & PHYSR0_LINKGD)) 842 status|=VELOCITY_LINK_FAIL; 843 */ 844 845 if (PHYSR0 & PHYSR0_FDPX) 846 status |= VELOCITY_DUPLEX_FULL; 847 848 if (PHYSR0 & PHYSR0_SPDG) 849 status |= VELOCITY_SPEED_1000; 850 else if (PHYSR0 & PHYSR0_SPD10) 851 status |= VELOCITY_SPEED_10; 852 else 853 status |= VELOCITY_SPEED_100; 854 855 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) { 856 velocity_mii_read(regs, MII_ADVERTISE, &ANAR); 857 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) 858 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) { 859 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs)) 860 status |= VELOCITY_AUTONEG_ENABLE; 861 } 862 } 863 864 return status; 865 } 866 867 /** 868 * velocity_set_media_mode - set media mode 869 * @mii_status: old MII link state 870 * 871 * Check the media link state and configure the flow control 872 * PHY and also velocity hardware setup accordingly. In particular 873 * we need to set up CD polling and frame bursting. 874 */ 875 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status) 876 { 877 u32 curr_status; 878 struct mac_regs __iomem *regs = vptr->mac_regs; 879 880 vptr->mii_status = mii_check_media_mode(vptr->mac_regs); 881 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL); 882 883 /* Set mii link status */ 884 set_mii_flow_control(vptr); 885 886 /* 887 Check if new status is consistent with current status 888 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) || 889 (mii_status==curr_status)) { 890 vptr->mii_status=mii_check_media_mode(vptr->mac_regs); 891 vptr->mii_status=check_connection_type(vptr->mac_regs); 892 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n"); 893 return 0; 894 } 895 */ 896 897 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) 898 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs); 899 900 /* 901 * If connection type is AUTO 902 */ 903 if (mii_status & VELOCITY_AUTONEG_ENABLE) { 904 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n"); 905 /* clear force MAC mode bit */ 906 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR); 907 /* set duplex mode of MAC according to duplex mode of MII */ 908 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs); 909 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs); 910 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); 911 912 /* enable AUTO-NEGO mode */ 913 mii_set_auto_on(vptr); 914 } else { 915 u16 CTRL1000; 916 u16 ANAR; 917 u8 CHIPGCR; 918 919 /* 920 * 1. if it's 3119, disable frame bursting in halfduplex mode 921 * and enable it in fullduplex mode 922 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR 923 * 3. only enable CD heart beat counter in 10HD mode 924 */ 925 926 /* set force MAC mode bit */ 927 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR); 928 929 CHIPGCR = readb(®s->CHIPGCR); 930 931 if (mii_status & VELOCITY_SPEED_1000) 932 CHIPGCR |= CHIPGCR_FCGMII; 933 else 934 CHIPGCR &= ~CHIPGCR_FCGMII; 935 936 if (mii_status & VELOCITY_DUPLEX_FULL) { 937 CHIPGCR |= CHIPGCR_FCFDX; 938 writeb(CHIPGCR, ®s->CHIPGCR); 939 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n"); 940 if (vptr->rev_id < REV_ID_VT3216_A0) 941 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR); 942 } else { 943 CHIPGCR &= ~CHIPGCR_FCFDX; 944 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n"); 945 writeb(CHIPGCR, ®s->CHIPGCR); 946 if (vptr->rev_id < REV_ID_VT3216_A0) 947 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR); 948 } 949 950 velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000); 951 CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); 952 if ((mii_status & VELOCITY_SPEED_1000) && 953 (mii_status & VELOCITY_DUPLEX_FULL)) { 954 CTRL1000 |= ADVERTISE_1000FULL; 955 } 956 velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000); 957 958 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) 959 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG); 960 else 961 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG); 962 963 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */ 964 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR); 965 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)); 966 if (mii_status & VELOCITY_SPEED_100) { 967 if (mii_status & VELOCITY_DUPLEX_FULL) 968 ANAR |= ADVERTISE_100FULL; 969 else 970 ANAR |= ADVERTISE_100HALF; 971 } else if (mii_status & VELOCITY_SPEED_10) { 972 if (mii_status & VELOCITY_DUPLEX_FULL) 973 ANAR |= ADVERTISE_10FULL; 974 else 975 ANAR |= ADVERTISE_10HALF; 976 } 977 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR); 978 /* enable AUTO-NEGO mode */ 979 mii_set_auto_on(vptr); 980 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */ 981 } 982 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */ 983 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */ 984 return VELOCITY_LINK_CHANGE; 985 } 986 987 /** 988 * velocity_print_link_status - link status reporting 989 * @vptr: velocity to report on 990 * 991 * Turn the link status of the velocity card into a kernel log 992 * description of the new link state, detailing speed and duplex 993 * status 994 */ 995 static void velocity_print_link_status(struct velocity_info *vptr) 996 { 997 998 if (vptr->mii_status & VELOCITY_LINK_FAIL) { 999 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name); 1000 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) { 1001 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name); 1002 1003 if (vptr->mii_status & VELOCITY_SPEED_1000) 1004 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps"); 1005 else if (vptr->mii_status & VELOCITY_SPEED_100) 1006 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps"); 1007 else 1008 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps"); 1009 1010 if (vptr->mii_status & VELOCITY_DUPLEX_FULL) 1011 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n"); 1012 else 1013 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n"); 1014 } else { 1015 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name); 1016 switch (vptr->options.spd_dpx) { 1017 case SPD_DPX_1000_FULL: 1018 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n"); 1019 break; 1020 case SPD_DPX_100_HALF: 1021 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n"); 1022 break; 1023 case SPD_DPX_100_FULL: 1024 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n"); 1025 break; 1026 case SPD_DPX_10_HALF: 1027 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n"); 1028 break; 1029 case SPD_DPX_10_FULL: 1030 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n"); 1031 break; 1032 default: 1033 break; 1034 } 1035 } 1036 } 1037 1038 /** 1039 * enable_flow_control_ability - flow control 1040 * @vptr: veloity to configure 1041 * 1042 * Set up flow control according to the flow control options 1043 * determined by the eeprom/configuration. 1044 */ 1045 static void enable_flow_control_ability(struct velocity_info *vptr) 1046 { 1047 1048 struct mac_regs __iomem *regs = vptr->mac_regs; 1049 1050 switch (vptr->options.flow_cntl) { 1051 1052 case FLOW_CNTL_DEFAULT: 1053 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0)) 1054 writel(CR0_FDXRFCEN, ®s->CR0Set); 1055 else 1056 writel(CR0_FDXRFCEN, ®s->CR0Clr); 1057 1058 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0)) 1059 writel(CR0_FDXTFCEN, ®s->CR0Set); 1060 else 1061 writel(CR0_FDXTFCEN, ®s->CR0Clr); 1062 break; 1063 1064 case FLOW_CNTL_TX: 1065 writel(CR0_FDXTFCEN, ®s->CR0Set); 1066 writel(CR0_FDXRFCEN, ®s->CR0Clr); 1067 break; 1068 1069 case FLOW_CNTL_RX: 1070 writel(CR0_FDXRFCEN, ®s->CR0Set); 1071 writel(CR0_FDXTFCEN, ®s->CR0Clr); 1072 break; 1073 1074 case FLOW_CNTL_TX_RX: 1075 writel(CR0_FDXTFCEN, ®s->CR0Set); 1076 writel(CR0_FDXRFCEN, ®s->CR0Set); 1077 break; 1078 1079 case FLOW_CNTL_DISABLE: 1080 writel(CR0_FDXRFCEN, ®s->CR0Clr); 1081 writel(CR0_FDXTFCEN, ®s->CR0Clr); 1082 break; 1083 1084 default: 1085 break; 1086 } 1087 1088 } 1089 1090 /** 1091 * velocity_soft_reset - soft reset 1092 * @vptr: velocity to reset 1093 * 1094 * Kick off a soft reset of the velocity adapter and then poll 1095 * until the reset sequence has completed before returning. 1096 */ 1097 static int velocity_soft_reset(struct velocity_info *vptr) 1098 { 1099 struct mac_regs __iomem *regs = vptr->mac_regs; 1100 int i = 0; 1101 1102 writel(CR0_SFRST, ®s->CR0Set); 1103 1104 for (i = 0; i < W_MAX_TIMEOUT; i++) { 1105 udelay(5); 1106 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set)) 1107 break; 1108 } 1109 1110 if (i == W_MAX_TIMEOUT) { 1111 writel(CR0_FORSRST, ®s->CR0Set); 1112 /* FIXME: PCI POSTING */ 1113 /* delay 2ms */ 1114 mdelay(2); 1115 } 1116 return 0; 1117 } 1118 1119 /** 1120 * velocity_set_multi - filter list change callback 1121 * @dev: network device 1122 * 1123 * Called by the network layer when the filter lists need to change 1124 * for a velocity adapter. Reload the CAMs with the new address 1125 * filter ruleset. 1126 */ 1127 static void velocity_set_multi(struct net_device *dev) 1128 { 1129 struct velocity_info *vptr = netdev_priv(dev); 1130 struct mac_regs __iomem *regs = vptr->mac_regs; 1131 u8 rx_mode; 1132 int i; 1133 struct netdev_hw_addr *ha; 1134 1135 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ 1136 writel(0xffffffff, ®s->MARCAM[0]); 1137 writel(0xffffffff, ®s->MARCAM[4]); 1138 rx_mode = (RCR_AM | RCR_AB | RCR_PROM); 1139 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) || 1140 (dev->flags & IFF_ALLMULTI)) { 1141 writel(0xffffffff, ®s->MARCAM[0]); 1142 writel(0xffffffff, ®s->MARCAM[4]); 1143 rx_mode = (RCR_AM | RCR_AB); 1144 } else { 1145 int offset = MCAM_SIZE - vptr->multicast_limit; 1146 mac_get_cam_mask(regs, vptr->mCAMmask); 1147 1148 i = 0; 1149 netdev_for_each_mc_addr(ha, dev) { 1150 mac_set_cam(regs, i + offset, ha->addr); 1151 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7); 1152 i++; 1153 } 1154 1155 mac_set_cam_mask(regs, vptr->mCAMmask); 1156 rx_mode = RCR_AM | RCR_AB | RCR_AP; 1157 } 1158 if (dev->mtu > 1500) 1159 rx_mode |= RCR_AL; 1160 1161 BYTE_REG_BITS_ON(rx_mode, ®s->RCR); 1162 1163 } 1164 1165 /* 1166 * MII access , media link mode setting functions 1167 */ 1168 1169 /** 1170 * mii_init - set up MII 1171 * @vptr: velocity adapter 1172 * @mii_status: links tatus 1173 * 1174 * Set up the PHY for the current link state. 1175 */ 1176 static void mii_init(struct velocity_info *vptr, u32 mii_status) 1177 { 1178 u16 BMCR; 1179 1180 switch (PHYID_GET_PHY_ID(vptr->phy_id)) { 1181 case PHYID_CICADA_CS8201: 1182 /* 1183 * Reset to hardware default 1184 */ 1185 MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); 1186 /* 1187 * Turn on ECHODIS bit in NWay-forced full mode and turn it 1188 * off it in NWay-forced half mode for NWay-forced v.s. 1189 * legacy-forced issue. 1190 */ 1191 if (vptr->mii_status & VELOCITY_DUPLEX_FULL) 1192 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); 1193 else 1194 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); 1195 /* 1196 * Turn on Link/Activity LED enable bit for CIS8201 1197 */ 1198 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs); 1199 break; 1200 case PHYID_VT3216_32BIT: 1201 case PHYID_VT3216_64BIT: 1202 /* 1203 * Reset to hardware default 1204 */ 1205 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); 1206 /* 1207 * Turn on ECHODIS bit in NWay-forced full mode and turn it 1208 * off it in NWay-forced half mode for NWay-forced v.s. 1209 * legacy-forced issue 1210 */ 1211 if (vptr->mii_status & VELOCITY_DUPLEX_FULL) 1212 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); 1213 else 1214 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); 1215 break; 1216 1217 case PHYID_MARVELL_1000: 1218 case PHYID_MARVELL_1000S: 1219 /* 1220 * Assert CRS on Transmit 1221 */ 1222 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs); 1223 /* 1224 * Reset to hardware default 1225 */ 1226 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); 1227 break; 1228 default: 1229 ; 1230 } 1231 velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR); 1232 if (BMCR & BMCR_ISOLATE) { 1233 BMCR &= ~BMCR_ISOLATE; 1234 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR); 1235 } 1236 } 1237 1238 /** 1239 * setup_queue_timers - Setup interrupt timers 1240 * 1241 * Setup interrupt frequency during suppression (timeout if the frame 1242 * count isn't filled). 1243 */ 1244 static void setup_queue_timers(struct velocity_info *vptr) 1245 { 1246 /* Only for newer revisions */ 1247 if (vptr->rev_id >= REV_ID_VT3216_A0) { 1248 u8 txqueue_timer = 0; 1249 u8 rxqueue_timer = 0; 1250 1251 if (vptr->mii_status & (VELOCITY_SPEED_1000 | 1252 VELOCITY_SPEED_100)) { 1253 txqueue_timer = vptr->options.txqueue_timer; 1254 rxqueue_timer = vptr->options.rxqueue_timer; 1255 } 1256 1257 writeb(txqueue_timer, &vptr->mac_regs->TQETMR); 1258 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR); 1259 } 1260 } 1261 1262 /** 1263 * setup_adaptive_interrupts - Setup interrupt suppression 1264 * 1265 * @vptr velocity adapter 1266 * 1267 * The velocity is able to suppress interrupt during high interrupt load. 1268 * This function turns on that feature. 1269 */ 1270 static void setup_adaptive_interrupts(struct velocity_info *vptr) 1271 { 1272 struct mac_regs __iomem *regs = vptr->mac_regs; 1273 u16 tx_intsup = vptr->options.tx_intsup; 1274 u16 rx_intsup = vptr->options.rx_intsup; 1275 1276 /* Setup default interrupt mask (will be changed below) */ 1277 vptr->int_mask = INT_MASK_DEF; 1278 1279 /* Set Tx Interrupt Suppression Threshold */ 1280 writeb(CAMCR_PS0, ®s->CAMCR); 1281 if (tx_intsup != 0) { 1282 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I | 1283 ISR_PTX2I | ISR_PTX3I); 1284 writew(tx_intsup, ®s->ISRCTL); 1285 } else 1286 writew(ISRCTL_TSUPDIS, ®s->ISRCTL); 1287 1288 /* Set Rx Interrupt Suppression Threshold */ 1289 writeb(CAMCR_PS1, ®s->CAMCR); 1290 if (rx_intsup != 0) { 1291 vptr->int_mask &= ~ISR_PRXI; 1292 writew(rx_intsup, ®s->ISRCTL); 1293 } else 1294 writew(ISRCTL_RSUPDIS, ®s->ISRCTL); 1295 1296 /* Select page to interrupt hold timer */ 1297 writeb(0, ®s->CAMCR); 1298 } 1299 1300 /** 1301 * velocity_init_registers - initialise MAC registers 1302 * @vptr: velocity to init 1303 * @type: type of initialisation (hot or cold) 1304 * 1305 * Initialise the MAC on a reset or on first set up on the 1306 * hardware. 1307 */ 1308 static void velocity_init_registers(struct velocity_info *vptr, 1309 enum velocity_init_type type) 1310 { 1311 struct mac_regs __iomem *regs = vptr->mac_regs; 1312 int i, mii_status; 1313 1314 mac_wol_reset(regs); 1315 1316 switch (type) { 1317 case VELOCITY_INIT_RESET: 1318 case VELOCITY_INIT_WOL: 1319 1320 netif_stop_queue(vptr->dev); 1321 1322 /* 1323 * Reset RX to prevent RX pointer not on the 4X location 1324 */ 1325 velocity_rx_reset(vptr); 1326 mac_rx_queue_run(regs); 1327 mac_rx_queue_wake(regs); 1328 1329 mii_status = velocity_get_opt_media_mode(vptr); 1330 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) { 1331 velocity_print_link_status(vptr); 1332 if (!(vptr->mii_status & VELOCITY_LINK_FAIL)) 1333 netif_wake_queue(vptr->dev); 1334 } 1335 1336 enable_flow_control_ability(vptr); 1337 1338 mac_clear_isr(regs); 1339 writel(CR0_STOP, ®s->CR0Clr); 1340 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), 1341 ®s->CR0Set); 1342 1343 break; 1344 1345 case VELOCITY_INIT_COLD: 1346 default: 1347 /* 1348 * Do reset 1349 */ 1350 velocity_soft_reset(vptr); 1351 mdelay(5); 1352 1353 mac_eeprom_reload(regs); 1354 for (i = 0; i < 6; i++) 1355 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i])); 1356 1357 /* 1358 * clear Pre_ACPI bit. 1359 */ 1360 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA)); 1361 mac_set_rx_thresh(regs, vptr->options.rx_thresh); 1362 mac_set_dma_length(regs, vptr->options.DMA_length); 1363 1364 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet); 1365 /* 1366 * Back off algorithm use original IEEE standard 1367 */ 1368 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB); 1369 1370 /* 1371 * Init CAM filter 1372 */ 1373 velocity_init_cam_filter(vptr); 1374 1375 /* 1376 * Set packet filter: Receive directed and broadcast address 1377 */ 1378 velocity_set_multi(vptr->dev); 1379 1380 /* 1381 * Enable MII auto-polling 1382 */ 1383 enable_mii_autopoll(regs); 1384 1385 setup_adaptive_interrupts(vptr); 1386 1387 writel(vptr->rx.pool_dma, ®s->RDBaseLo); 1388 writew(vptr->options.numrx - 1, ®s->RDCSize); 1389 mac_rx_queue_run(regs); 1390 mac_rx_queue_wake(regs); 1391 1392 writew(vptr->options.numtx - 1, ®s->TDCSize); 1393 1394 for (i = 0; i < vptr->tx.numq; i++) { 1395 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]); 1396 mac_tx_queue_run(regs, i); 1397 } 1398 1399 init_flow_control_register(vptr); 1400 1401 writel(CR0_STOP, ®s->CR0Clr); 1402 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set); 1403 1404 mii_status = velocity_get_opt_media_mode(vptr); 1405 netif_stop_queue(vptr->dev); 1406 1407 mii_init(vptr, mii_status); 1408 1409 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) { 1410 velocity_print_link_status(vptr); 1411 if (!(vptr->mii_status & VELOCITY_LINK_FAIL)) 1412 netif_wake_queue(vptr->dev); 1413 } 1414 1415 enable_flow_control_ability(vptr); 1416 mac_hw_mibs_init(regs); 1417 mac_write_int_mask(vptr->int_mask, regs); 1418 mac_clear_isr(regs); 1419 1420 } 1421 } 1422 1423 static void velocity_give_many_rx_descs(struct velocity_info *vptr) 1424 { 1425 struct mac_regs __iomem *regs = vptr->mac_regs; 1426 int avail, dirty, unusable; 1427 1428 /* 1429 * RD number must be equal to 4X per hardware spec 1430 * (programming guide rev 1.20, p.13) 1431 */ 1432 if (vptr->rx.filled < 4) 1433 return; 1434 1435 wmb(); 1436 1437 unusable = vptr->rx.filled & 0x0003; 1438 dirty = vptr->rx.dirty - unusable; 1439 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) { 1440 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1; 1441 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC; 1442 } 1443 1444 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU); 1445 vptr->rx.filled = unusable; 1446 } 1447 1448 /** 1449 * velocity_init_dma_rings - set up DMA rings 1450 * @vptr: Velocity to set up 1451 * 1452 * Allocate PCI mapped DMA rings for the receive and transmit layer 1453 * to use. 1454 */ 1455 static int velocity_init_dma_rings(struct velocity_info *vptr) 1456 { 1457 struct velocity_opt *opt = &vptr->options; 1458 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc); 1459 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc); 1460 struct pci_dev *pdev = vptr->pdev; 1461 dma_addr_t pool_dma; 1462 void *pool; 1463 unsigned int i; 1464 1465 /* 1466 * Allocate all RD/TD rings a single pool. 1467 * 1468 * pci_alloc_consistent() fulfills the requirement for 64 bytes 1469 * alignment 1470 */ 1471 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq + 1472 rx_ring_size, &pool_dma); 1473 if (!pool) { 1474 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n", 1475 vptr->dev->name); 1476 return -ENOMEM; 1477 } 1478 1479 vptr->rx.ring = pool; 1480 vptr->rx.pool_dma = pool_dma; 1481 1482 pool += rx_ring_size; 1483 pool_dma += rx_ring_size; 1484 1485 for (i = 0; i < vptr->tx.numq; i++) { 1486 vptr->tx.rings[i] = pool; 1487 vptr->tx.pool_dma[i] = pool_dma; 1488 pool += tx_ring_size; 1489 pool_dma += tx_ring_size; 1490 } 1491 1492 return 0; 1493 } 1494 1495 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu) 1496 { 1497 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32; 1498 } 1499 1500 /** 1501 * velocity_alloc_rx_buf - allocate aligned receive buffer 1502 * @vptr: velocity 1503 * @idx: ring index 1504 * 1505 * Allocate a new full sized buffer for the reception of a frame and 1506 * map it into PCI space for the hardware to use. The hardware 1507 * requires *64* byte alignment of the buffer which makes life 1508 * less fun than would be ideal. 1509 */ 1510 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx) 1511 { 1512 struct rx_desc *rd = &(vptr->rx.ring[idx]); 1513 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]); 1514 1515 rd_info->skb = netdev_alloc_skb(vptr->dev, vptr->rx.buf_sz + 64); 1516 if (rd_info->skb == NULL) 1517 return -ENOMEM; 1518 1519 /* 1520 * Do the gymnastics to get the buffer head for data at 1521 * 64byte alignment. 1522 */ 1523 skb_reserve(rd_info->skb, 1524 64 - ((unsigned long) rd_info->skb->data & 63)); 1525 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, 1526 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE); 1527 1528 /* 1529 * Fill in the descriptor to match 1530 */ 1531 1532 *((u32 *) & (rd->rdesc0)) = 0; 1533 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN; 1534 rd->pa_low = cpu_to_le32(rd_info->skb_dma); 1535 rd->pa_high = 0; 1536 return 0; 1537 } 1538 1539 1540 static int velocity_rx_refill(struct velocity_info *vptr) 1541 { 1542 int dirty = vptr->rx.dirty, done = 0; 1543 1544 do { 1545 struct rx_desc *rd = vptr->rx.ring + dirty; 1546 1547 /* Fine for an all zero Rx desc at init time as well */ 1548 if (rd->rdesc0.len & OWNED_BY_NIC) 1549 break; 1550 1551 if (!vptr->rx.info[dirty].skb) { 1552 if (velocity_alloc_rx_buf(vptr, dirty) < 0) 1553 break; 1554 } 1555 done++; 1556 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0; 1557 } while (dirty != vptr->rx.curr); 1558 1559 if (done) { 1560 vptr->rx.dirty = dirty; 1561 vptr->rx.filled += done; 1562 } 1563 1564 return done; 1565 } 1566 1567 /** 1568 * velocity_free_rd_ring - free receive ring 1569 * @vptr: velocity to clean up 1570 * 1571 * Free the receive buffers for each ring slot and any 1572 * attached socket buffers that need to go away. 1573 */ 1574 static void velocity_free_rd_ring(struct velocity_info *vptr) 1575 { 1576 int i; 1577 1578 if (vptr->rx.info == NULL) 1579 return; 1580 1581 for (i = 0; i < vptr->options.numrx; i++) { 1582 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]); 1583 struct rx_desc *rd = vptr->rx.ring + i; 1584 1585 memset(rd, 0, sizeof(*rd)); 1586 1587 if (!rd_info->skb) 1588 continue; 1589 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz, 1590 PCI_DMA_FROMDEVICE); 1591 rd_info->skb_dma = 0; 1592 1593 dev_kfree_skb(rd_info->skb); 1594 rd_info->skb = NULL; 1595 } 1596 1597 kfree(vptr->rx.info); 1598 vptr->rx.info = NULL; 1599 } 1600 1601 /** 1602 * velocity_init_rd_ring - set up receive ring 1603 * @vptr: velocity to configure 1604 * 1605 * Allocate and set up the receive buffers for each ring slot and 1606 * assign them to the network adapter. 1607 */ 1608 static int velocity_init_rd_ring(struct velocity_info *vptr) 1609 { 1610 int ret = -ENOMEM; 1611 1612 vptr->rx.info = kcalloc(vptr->options.numrx, 1613 sizeof(struct velocity_rd_info), GFP_KERNEL); 1614 if (!vptr->rx.info) 1615 goto out; 1616 1617 velocity_init_rx_ring_indexes(vptr); 1618 1619 if (velocity_rx_refill(vptr) != vptr->options.numrx) { 1620 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR 1621 "%s: failed to allocate RX buffer.\n", vptr->dev->name); 1622 velocity_free_rd_ring(vptr); 1623 goto out; 1624 } 1625 1626 ret = 0; 1627 out: 1628 return ret; 1629 } 1630 1631 /** 1632 * velocity_init_td_ring - set up transmit ring 1633 * @vptr: velocity 1634 * 1635 * Set up the transmit ring and chain the ring pointers together. 1636 * Returns zero on success or a negative posix errno code for 1637 * failure. 1638 */ 1639 static int velocity_init_td_ring(struct velocity_info *vptr) 1640 { 1641 int j; 1642 1643 /* Init the TD ring entries */ 1644 for (j = 0; j < vptr->tx.numq; j++) { 1645 1646 vptr->tx.infos[j] = kcalloc(vptr->options.numtx, 1647 sizeof(struct velocity_td_info), 1648 GFP_KERNEL); 1649 if (!vptr->tx.infos[j]) { 1650 while (--j >= 0) 1651 kfree(vptr->tx.infos[j]); 1652 return -ENOMEM; 1653 } 1654 1655 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0; 1656 } 1657 return 0; 1658 } 1659 1660 /** 1661 * velocity_free_dma_rings - free PCI ring pointers 1662 * @vptr: Velocity to free from 1663 * 1664 * Clean up the PCI ring buffers allocated to this velocity. 1665 */ 1666 static void velocity_free_dma_rings(struct velocity_info *vptr) 1667 { 1668 const int size = vptr->options.numrx * sizeof(struct rx_desc) + 1669 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq; 1670 1671 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma); 1672 } 1673 1674 static int velocity_init_rings(struct velocity_info *vptr, int mtu) 1675 { 1676 int ret; 1677 1678 velocity_set_rxbufsize(vptr, mtu); 1679 1680 ret = velocity_init_dma_rings(vptr); 1681 if (ret < 0) 1682 goto out; 1683 1684 ret = velocity_init_rd_ring(vptr); 1685 if (ret < 0) 1686 goto err_free_dma_rings_0; 1687 1688 ret = velocity_init_td_ring(vptr); 1689 if (ret < 0) 1690 goto err_free_rd_ring_1; 1691 out: 1692 return ret; 1693 1694 err_free_rd_ring_1: 1695 velocity_free_rd_ring(vptr); 1696 err_free_dma_rings_0: 1697 velocity_free_dma_rings(vptr); 1698 goto out; 1699 } 1700 1701 /** 1702 * velocity_free_tx_buf - free transmit buffer 1703 * @vptr: velocity 1704 * @tdinfo: buffer 1705 * 1706 * Release an transmit buffer. If the buffer was preallocated then 1707 * recycle it, if not then unmap the buffer. 1708 */ 1709 static void velocity_free_tx_buf(struct velocity_info *vptr, 1710 struct velocity_td_info *tdinfo, struct tx_desc *td) 1711 { 1712 struct sk_buff *skb = tdinfo->skb; 1713 1714 /* 1715 * Don't unmap the pre-allocated tx_bufs 1716 */ 1717 if (tdinfo->skb_dma) { 1718 int i; 1719 1720 for (i = 0; i < tdinfo->nskb_dma; i++) { 1721 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN); 1722 1723 /* For scatter-gather */ 1724 if (skb_shinfo(skb)->nr_frags > 0) 1725 pktlen = max_t(size_t, pktlen, 1726 td->td_buf[i].size & ~TD_QUEUE); 1727 1728 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], 1729 le16_to_cpu(pktlen), PCI_DMA_TODEVICE); 1730 } 1731 } 1732 dev_kfree_skb_irq(skb); 1733 tdinfo->skb = NULL; 1734 } 1735 1736 /* 1737 * FIXME: could we merge this with velocity_free_tx_buf ? 1738 */ 1739 static void velocity_free_td_ring_entry(struct velocity_info *vptr, 1740 int q, int n) 1741 { 1742 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]); 1743 int i; 1744 1745 if (td_info == NULL) 1746 return; 1747 1748 if (td_info->skb) { 1749 for (i = 0; i < td_info->nskb_dma; i++) { 1750 if (td_info->skb_dma[i]) { 1751 pci_unmap_single(vptr->pdev, td_info->skb_dma[i], 1752 td_info->skb->len, PCI_DMA_TODEVICE); 1753 td_info->skb_dma[i] = 0; 1754 } 1755 } 1756 dev_kfree_skb(td_info->skb); 1757 td_info->skb = NULL; 1758 } 1759 } 1760 1761 /** 1762 * velocity_free_td_ring - free td ring 1763 * @vptr: velocity 1764 * 1765 * Free up the transmit ring for this particular velocity adapter. 1766 * We free the ring contents but not the ring itself. 1767 */ 1768 static void velocity_free_td_ring(struct velocity_info *vptr) 1769 { 1770 int i, j; 1771 1772 for (j = 0; j < vptr->tx.numq; j++) { 1773 if (vptr->tx.infos[j] == NULL) 1774 continue; 1775 for (i = 0; i < vptr->options.numtx; i++) 1776 velocity_free_td_ring_entry(vptr, j, i); 1777 1778 kfree(vptr->tx.infos[j]); 1779 vptr->tx.infos[j] = NULL; 1780 } 1781 } 1782 1783 static void velocity_free_rings(struct velocity_info *vptr) 1784 { 1785 velocity_free_td_ring(vptr); 1786 velocity_free_rd_ring(vptr); 1787 velocity_free_dma_rings(vptr); 1788 } 1789 1790 /** 1791 * velocity_error - handle error from controller 1792 * @vptr: velocity 1793 * @status: card status 1794 * 1795 * Process an error report from the hardware and attempt to recover 1796 * the card itself. At the moment we cannot recover from some 1797 * theoretically impossible errors but this could be fixed using 1798 * the pci_device_failed logic to bounce the hardware 1799 * 1800 */ 1801 static void velocity_error(struct velocity_info *vptr, int status) 1802 { 1803 1804 if (status & ISR_TXSTLI) { 1805 struct mac_regs __iomem *regs = vptr->mac_regs; 1806 1807 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0])); 1808 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR); 1809 writew(TRDCSR_RUN, ®s->TDCSRClr); 1810 netif_stop_queue(vptr->dev); 1811 1812 /* FIXME: port over the pci_device_failed code and use it 1813 here */ 1814 } 1815 1816 if (status & ISR_SRCI) { 1817 struct mac_regs __iomem *regs = vptr->mac_regs; 1818 int linked; 1819 1820 if (vptr->options.spd_dpx == SPD_DPX_AUTO) { 1821 vptr->mii_status = check_connection_type(regs); 1822 1823 /* 1824 * If it is a 3119, disable frame bursting in 1825 * halfduplex mode and enable it in fullduplex 1826 * mode 1827 */ 1828 if (vptr->rev_id < REV_ID_VT3216_A0) { 1829 if (vptr->mii_status & VELOCITY_DUPLEX_FULL) 1830 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR); 1831 else 1832 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR); 1833 } 1834 /* 1835 * Only enable CD heart beat counter in 10HD mode 1836 */ 1837 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) 1838 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG); 1839 else 1840 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG); 1841 1842 setup_queue_timers(vptr); 1843 } 1844 /* 1845 * Get link status from PHYSR0 1846 */ 1847 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD; 1848 1849 if (linked) { 1850 vptr->mii_status &= ~VELOCITY_LINK_FAIL; 1851 netif_carrier_on(vptr->dev); 1852 } else { 1853 vptr->mii_status |= VELOCITY_LINK_FAIL; 1854 netif_carrier_off(vptr->dev); 1855 } 1856 1857 velocity_print_link_status(vptr); 1858 enable_flow_control_ability(vptr); 1859 1860 /* 1861 * Re-enable auto-polling because SRCI will disable 1862 * auto-polling 1863 */ 1864 1865 enable_mii_autopoll(regs); 1866 1867 if (vptr->mii_status & VELOCITY_LINK_FAIL) 1868 netif_stop_queue(vptr->dev); 1869 else 1870 netif_wake_queue(vptr->dev); 1871 1872 } 1873 if (status & ISR_MIBFI) 1874 velocity_update_hw_mibs(vptr); 1875 if (status & ISR_LSTEI) 1876 mac_rx_queue_wake(vptr->mac_regs); 1877 } 1878 1879 /** 1880 * tx_srv - transmit interrupt service 1881 * @vptr; Velocity 1882 * 1883 * Scan the queues looking for transmitted packets that 1884 * we can complete and clean up. Update any statistics as 1885 * necessary/ 1886 */ 1887 static int velocity_tx_srv(struct velocity_info *vptr) 1888 { 1889 struct tx_desc *td; 1890 int qnum; 1891 int full = 0; 1892 int idx; 1893 int works = 0; 1894 struct velocity_td_info *tdinfo; 1895 struct net_device_stats *stats = &vptr->dev->stats; 1896 1897 for (qnum = 0; qnum < vptr->tx.numq; qnum++) { 1898 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0; 1899 idx = (idx + 1) % vptr->options.numtx) { 1900 1901 /* 1902 * Get Tx Descriptor 1903 */ 1904 td = &(vptr->tx.rings[qnum][idx]); 1905 tdinfo = &(vptr->tx.infos[qnum][idx]); 1906 1907 if (td->tdesc0.len & OWNED_BY_NIC) 1908 break; 1909 1910 if ((works++ > 15)) 1911 break; 1912 1913 if (td->tdesc0.TSR & TSR0_TERR) { 1914 stats->tx_errors++; 1915 stats->tx_dropped++; 1916 if (td->tdesc0.TSR & TSR0_CDH) 1917 stats->tx_heartbeat_errors++; 1918 if (td->tdesc0.TSR & TSR0_CRS) 1919 stats->tx_carrier_errors++; 1920 if (td->tdesc0.TSR & TSR0_ABT) 1921 stats->tx_aborted_errors++; 1922 if (td->tdesc0.TSR & TSR0_OWC) 1923 stats->tx_window_errors++; 1924 } else { 1925 stats->tx_packets++; 1926 stats->tx_bytes += tdinfo->skb->len; 1927 } 1928 velocity_free_tx_buf(vptr, tdinfo, td); 1929 vptr->tx.used[qnum]--; 1930 } 1931 vptr->tx.tail[qnum] = idx; 1932 1933 if (AVAIL_TD(vptr, qnum) < 1) 1934 full = 1; 1935 } 1936 /* 1937 * Look to see if we should kick the transmit network 1938 * layer for more work. 1939 */ 1940 if (netif_queue_stopped(vptr->dev) && (full == 0) && 1941 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) { 1942 netif_wake_queue(vptr->dev); 1943 } 1944 return works; 1945 } 1946 1947 /** 1948 * velocity_rx_csum - checksum process 1949 * @rd: receive packet descriptor 1950 * @skb: network layer packet buffer 1951 * 1952 * Process the status bits for the received packet and determine 1953 * if the checksum was computed and verified by the hardware 1954 */ 1955 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb) 1956 { 1957 skb_checksum_none_assert(skb); 1958 1959 if (rd->rdesc1.CSM & CSM_IPKT) { 1960 if (rd->rdesc1.CSM & CSM_IPOK) { 1961 if ((rd->rdesc1.CSM & CSM_TCPKT) || 1962 (rd->rdesc1.CSM & CSM_UDPKT)) { 1963 if (!(rd->rdesc1.CSM & CSM_TUPOK)) 1964 return; 1965 } 1966 skb->ip_summed = CHECKSUM_UNNECESSARY; 1967 } 1968 } 1969 } 1970 1971 /** 1972 * velocity_rx_copy - in place Rx copy for small packets 1973 * @rx_skb: network layer packet buffer candidate 1974 * @pkt_size: received data size 1975 * @rd: receive packet descriptor 1976 * @dev: network device 1977 * 1978 * Replace the current skb that is scheduled for Rx processing by a 1979 * shorter, immediately allocated skb, if the received packet is small 1980 * enough. This function returns a negative value if the received 1981 * packet is too big or if memory is exhausted. 1982 */ 1983 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size, 1984 struct velocity_info *vptr) 1985 { 1986 int ret = -1; 1987 if (pkt_size < rx_copybreak) { 1988 struct sk_buff *new_skb; 1989 1990 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size); 1991 if (new_skb) { 1992 new_skb->ip_summed = rx_skb[0]->ip_summed; 1993 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size); 1994 *rx_skb = new_skb; 1995 ret = 0; 1996 } 1997 1998 } 1999 return ret; 2000 } 2001 2002 /** 2003 * velocity_iph_realign - IP header alignment 2004 * @vptr: velocity we are handling 2005 * @skb: network layer packet buffer 2006 * @pkt_size: received data size 2007 * 2008 * Align IP header on a 2 bytes boundary. This behavior can be 2009 * configured by the user. 2010 */ 2011 static inline void velocity_iph_realign(struct velocity_info *vptr, 2012 struct sk_buff *skb, int pkt_size) 2013 { 2014 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) { 2015 memmove(skb->data + 2, skb->data, pkt_size); 2016 skb_reserve(skb, 2); 2017 } 2018 } 2019 2020 /** 2021 * velocity_receive_frame - received packet processor 2022 * @vptr: velocity we are handling 2023 * @idx: ring index 2024 * 2025 * A packet has arrived. We process the packet and if appropriate 2026 * pass the frame up the network stack 2027 */ 2028 static int velocity_receive_frame(struct velocity_info *vptr, int idx) 2029 { 2030 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int); 2031 struct net_device_stats *stats = &vptr->dev->stats; 2032 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]); 2033 struct rx_desc *rd = &(vptr->rx.ring[idx]); 2034 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff; 2035 struct sk_buff *skb; 2036 2037 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) { 2038 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name); 2039 stats->rx_length_errors++; 2040 return -EINVAL; 2041 } 2042 2043 if (rd->rdesc0.RSR & RSR_MAR) 2044 stats->multicast++; 2045 2046 skb = rd_info->skb; 2047 2048 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma, 2049 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE); 2050 2051 /* 2052 * Drop frame not meeting IEEE 802.3 2053 */ 2054 2055 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) { 2056 if (rd->rdesc0.RSR & RSR_RL) { 2057 stats->rx_length_errors++; 2058 return -EINVAL; 2059 } 2060 } 2061 2062 pci_action = pci_dma_sync_single_for_device; 2063 2064 velocity_rx_csum(rd, skb); 2065 2066 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) { 2067 velocity_iph_realign(vptr, skb, pkt_len); 2068 pci_action = pci_unmap_single; 2069 rd_info->skb = NULL; 2070 } 2071 2072 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz, 2073 PCI_DMA_FROMDEVICE); 2074 2075 skb_put(skb, pkt_len - 4); 2076 skb->protocol = eth_type_trans(skb, vptr->dev); 2077 2078 if (rd->rdesc0.RSR & RSR_DETAG) { 2079 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG)); 2080 2081 __vlan_hwaccel_put_tag(skb, vid); 2082 } 2083 netif_rx(skb); 2084 2085 stats->rx_bytes += pkt_len; 2086 stats->rx_packets++; 2087 2088 return 0; 2089 } 2090 2091 /** 2092 * velocity_rx_srv - service RX interrupt 2093 * @vptr: velocity 2094 * 2095 * Walk the receive ring of the velocity adapter and remove 2096 * any received packets from the receive queue. Hand the ring 2097 * slots back to the adapter for reuse. 2098 */ 2099 static int velocity_rx_srv(struct velocity_info *vptr, int budget_left) 2100 { 2101 struct net_device_stats *stats = &vptr->dev->stats; 2102 int rd_curr = vptr->rx.curr; 2103 int works = 0; 2104 2105 while (works < budget_left) { 2106 struct rx_desc *rd = vptr->rx.ring + rd_curr; 2107 2108 if (!vptr->rx.info[rd_curr].skb) 2109 break; 2110 2111 if (rd->rdesc0.len & OWNED_BY_NIC) 2112 break; 2113 2114 rmb(); 2115 2116 /* 2117 * Don't drop CE or RL error frame although RXOK is off 2118 */ 2119 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) { 2120 if (velocity_receive_frame(vptr, rd_curr) < 0) 2121 stats->rx_dropped++; 2122 } else { 2123 if (rd->rdesc0.RSR & RSR_CRC) 2124 stats->rx_crc_errors++; 2125 if (rd->rdesc0.RSR & RSR_FAE) 2126 stats->rx_frame_errors++; 2127 2128 stats->rx_dropped++; 2129 } 2130 2131 rd->size |= RX_INTEN; 2132 2133 rd_curr++; 2134 if (rd_curr >= vptr->options.numrx) 2135 rd_curr = 0; 2136 works++; 2137 } 2138 2139 vptr->rx.curr = rd_curr; 2140 2141 if ((works > 0) && (velocity_rx_refill(vptr) > 0)) 2142 velocity_give_many_rx_descs(vptr); 2143 2144 VAR_USED(stats); 2145 return works; 2146 } 2147 2148 static int velocity_poll(struct napi_struct *napi, int budget) 2149 { 2150 struct velocity_info *vptr = container_of(napi, 2151 struct velocity_info, napi); 2152 unsigned int rx_done; 2153 unsigned long flags; 2154 2155 spin_lock_irqsave(&vptr->lock, flags); 2156 /* 2157 * Do rx and tx twice for performance (taken from the VIA 2158 * out-of-tree driver). 2159 */ 2160 rx_done = velocity_rx_srv(vptr, budget / 2); 2161 velocity_tx_srv(vptr); 2162 rx_done += velocity_rx_srv(vptr, budget - rx_done); 2163 velocity_tx_srv(vptr); 2164 2165 /* If budget not fully consumed, exit the polling mode */ 2166 if (rx_done < budget) { 2167 napi_complete(napi); 2168 mac_enable_int(vptr->mac_regs); 2169 } 2170 spin_unlock_irqrestore(&vptr->lock, flags); 2171 2172 return rx_done; 2173 } 2174 2175 /** 2176 * velocity_intr - interrupt callback 2177 * @irq: interrupt number 2178 * @dev_instance: interrupting device 2179 * 2180 * Called whenever an interrupt is generated by the velocity 2181 * adapter IRQ line. We may not be the source of the interrupt 2182 * and need to identify initially if we are, and if not exit as 2183 * efficiently as possible. 2184 */ 2185 static irqreturn_t velocity_intr(int irq, void *dev_instance) 2186 { 2187 struct net_device *dev = dev_instance; 2188 struct velocity_info *vptr = netdev_priv(dev); 2189 u32 isr_status; 2190 2191 spin_lock(&vptr->lock); 2192 isr_status = mac_read_isr(vptr->mac_regs); 2193 2194 /* Not us ? */ 2195 if (isr_status == 0) { 2196 spin_unlock(&vptr->lock); 2197 return IRQ_NONE; 2198 } 2199 2200 /* Ack the interrupt */ 2201 mac_write_isr(vptr->mac_regs, isr_status); 2202 2203 if (likely(napi_schedule_prep(&vptr->napi))) { 2204 mac_disable_int(vptr->mac_regs); 2205 __napi_schedule(&vptr->napi); 2206 } 2207 2208 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI))) 2209 velocity_error(vptr, isr_status); 2210 2211 spin_unlock(&vptr->lock); 2212 2213 return IRQ_HANDLED; 2214 } 2215 2216 /** 2217 * velocity_open - interface activation callback 2218 * @dev: network layer device to open 2219 * 2220 * Called when the network layer brings the interface up. Returns 2221 * a negative posix error code on failure, or zero on success. 2222 * 2223 * All the ring allocation and set up is done on open for this 2224 * adapter to minimise memory usage when inactive 2225 */ 2226 static int velocity_open(struct net_device *dev) 2227 { 2228 struct velocity_info *vptr = netdev_priv(dev); 2229 int ret; 2230 2231 ret = velocity_init_rings(vptr, dev->mtu); 2232 if (ret < 0) 2233 goto out; 2234 2235 /* Ensure chip is running */ 2236 pci_set_power_state(vptr->pdev, PCI_D0); 2237 2238 velocity_init_registers(vptr, VELOCITY_INIT_COLD); 2239 2240 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED, 2241 dev->name, dev); 2242 if (ret < 0) { 2243 /* Power down the chip */ 2244 pci_set_power_state(vptr->pdev, PCI_D3hot); 2245 velocity_free_rings(vptr); 2246 goto out; 2247 } 2248 2249 velocity_give_many_rx_descs(vptr); 2250 2251 mac_enable_int(vptr->mac_regs); 2252 netif_start_queue(dev); 2253 napi_enable(&vptr->napi); 2254 vptr->flags |= VELOCITY_FLAGS_OPENED; 2255 out: 2256 return ret; 2257 } 2258 2259 /** 2260 * velocity_shutdown - shut down the chip 2261 * @vptr: velocity to deactivate 2262 * 2263 * Shuts down the internal operations of the velocity and 2264 * disables interrupts, autopolling, transmit and receive 2265 */ 2266 static void velocity_shutdown(struct velocity_info *vptr) 2267 { 2268 struct mac_regs __iomem *regs = vptr->mac_regs; 2269 mac_disable_int(regs); 2270 writel(CR0_STOP, ®s->CR0Set); 2271 writew(0xFFFF, ®s->TDCSRClr); 2272 writeb(0xFF, ®s->RDCSRClr); 2273 safe_disable_mii_autopoll(regs); 2274 mac_clear_isr(regs); 2275 } 2276 2277 /** 2278 * velocity_change_mtu - MTU change callback 2279 * @dev: network device 2280 * @new_mtu: desired MTU 2281 * 2282 * Handle requests from the networking layer for MTU change on 2283 * this interface. It gets called on a change by the network layer. 2284 * Return zero for success or negative posix error code. 2285 */ 2286 static int velocity_change_mtu(struct net_device *dev, int new_mtu) 2287 { 2288 struct velocity_info *vptr = netdev_priv(dev); 2289 int ret = 0; 2290 2291 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) { 2292 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n", 2293 vptr->dev->name); 2294 ret = -EINVAL; 2295 goto out_0; 2296 } 2297 2298 if (!netif_running(dev)) { 2299 dev->mtu = new_mtu; 2300 goto out_0; 2301 } 2302 2303 if (dev->mtu != new_mtu) { 2304 struct velocity_info *tmp_vptr; 2305 unsigned long flags; 2306 struct rx_info rx; 2307 struct tx_info tx; 2308 2309 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL); 2310 if (!tmp_vptr) { 2311 ret = -ENOMEM; 2312 goto out_0; 2313 } 2314 2315 tmp_vptr->dev = dev; 2316 tmp_vptr->pdev = vptr->pdev; 2317 tmp_vptr->options = vptr->options; 2318 tmp_vptr->tx.numq = vptr->tx.numq; 2319 2320 ret = velocity_init_rings(tmp_vptr, new_mtu); 2321 if (ret < 0) 2322 goto out_free_tmp_vptr_1; 2323 2324 spin_lock_irqsave(&vptr->lock, flags); 2325 2326 netif_stop_queue(dev); 2327 velocity_shutdown(vptr); 2328 2329 rx = vptr->rx; 2330 tx = vptr->tx; 2331 2332 vptr->rx = tmp_vptr->rx; 2333 vptr->tx = tmp_vptr->tx; 2334 2335 tmp_vptr->rx = rx; 2336 tmp_vptr->tx = tx; 2337 2338 dev->mtu = new_mtu; 2339 2340 velocity_init_registers(vptr, VELOCITY_INIT_COLD); 2341 2342 velocity_give_many_rx_descs(vptr); 2343 2344 mac_enable_int(vptr->mac_regs); 2345 netif_start_queue(dev); 2346 2347 spin_unlock_irqrestore(&vptr->lock, flags); 2348 2349 velocity_free_rings(tmp_vptr); 2350 2351 out_free_tmp_vptr_1: 2352 kfree(tmp_vptr); 2353 } 2354 out_0: 2355 return ret; 2356 } 2357 2358 /** 2359 * velocity_mii_ioctl - MII ioctl handler 2360 * @dev: network device 2361 * @ifr: the ifreq block for the ioctl 2362 * @cmd: the command 2363 * 2364 * Process MII requests made via ioctl from the network layer. These 2365 * are used by tools like kudzu to interrogate the link state of the 2366 * hardware 2367 */ 2368 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2369 { 2370 struct velocity_info *vptr = netdev_priv(dev); 2371 struct mac_regs __iomem *regs = vptr->mac_regs; 2372 unsigned long flags; 2373 struct mii_ioctl_data *miidata = if_mii(ifr); 2374 int err; 2375 2376 switch (cmd) { 2377 case SIOCGMIIPHY: 2378 miidata->phy_id = readb(®s->MIIADR) & 0x1f; 2379 break; 2380 case SIOCGMIIREG: 2381 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0) 2382 return -ETIMEDOUT; 2383 break; 2384 case SIOCSMIIREG: 2385 spin_lock_irqsave(&vptr->lock, flags); 2386 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in); 2387 spin_unlock_irqrestore(&vptr->lock, flags); 2388 check_connection_type(vptr->mac_regs); 2389 if (err) 2390 return err; 2391 break; 2392 default: 2393 return -EOPNOTSUPP; 2394 } 2395 return 0; 2396 } 2397 2398 /** 2399 * velocity_ioctl - ioctl entry point 2400 * @dev: network device 2401 * @rq: interface request ioctl 2402 * @cmd: command code 2403 * 2404 * Called when the user issues an ioctl request to the network 2405 * device in question. The velocity interface supports MII. 2406 */ 2407 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2408 { 2409 struct velocity_info *vptr = netdev_priv(dev); 2410 int ret; 2411 2412 /* If we are asked for information and the device is power 2413 saving then we need to bring the device back up to talk to it */ 2414 2415 if (!netif_running(dev)) 2416 pci_set_power_state(vptr->pdev, PCI_D0); 2417 2418 switch (cmd) { 2419 case SIOCGMIIPHY: /* Get address of MII PHY in use. */ 2420 case SIOCGMIIREG: /* Read MII PHY register. */ 2421 case SIOCSMIIREG: /* Write to MII PHY register. */ 2422 ret = velocity_mii_ioctl(dev, rq, cmd); 2423 break; 2424 2425 default: 2426 ret = -EOPNOTSUPP; 2427 } 2428 if (!netif_running(dev)) 2429 pci_set_power_state(vptr->pdev, PCI_D3hot); 2430 2431 2432 return ret; 2433 } 2434 2435 /** 2436 * velocity_get_status - statistics callback 2437 * @dev: network device 2438 * 2439 * Callback from the network layer to allow driver statistics 2440 * to be resynchronized with hardware collected state. In the 2441 * case of the velocity we need to pull the MIB counters from 2442 * the hardware into the counters before letting the network 2443 * layer display them. 2444 */ 2445 static struct net_device_stats *velocity_get_stats(struct net_device *dev) 2446 { 2447 struct velocity_info *vptr = netdev_priv(dev); 2448 2449 /* If the hardware is down, don't touch MII */ 2450 if (!netif_running(dev)) 2451 return &dev->stats; 2452 2453 spin_lock_irq(&vptr->lock); 2454 velocity_update_hw_mibs(vptr); 2455 spin_unlock_irq(&vptr->lock); 2456 2457 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts]; 2458 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts]; 2459 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors]; 2460 2461 // unsigned long rx_dropped; /* no space in linux buffers */ 2462 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions]; 2463 /* detailed rx_errors: */ 2464 // unsigned long rx_length_errors; 2465 // unsigned long rx_over_errors; /* receiver ring buff overflow */ 2466 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE]; 2467 // unsigned long rx_frame_errors; /* recv'd frame alignment error */ 2468 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */ 2469 // unsigned long rx_missed_errors; /* receiver missed packet */ 2470 2471 /* detailed tx_errors */ 2472 // unsigned long tx_fifo_errors; 2473 2474 return &dev->stats; 2475 } 2476 2477 /** 2478 * velocity_close - close adapter callback 2479 * @dev: network device 2480 * 2481 * Callback from the network layer when the velocity is being 2482 * deactivated by the network layer 2483 */ 2484 static int velocity_close(struct net_device *dev) 2485 { 2486 struct velocity_info *vptr = netdev_priv(dev); 2487 2488 napi_disable(&vptr->napi); 2489 netif_stop_queue(dev); 2490 velocity_shutdown(vptr); 2491 2492 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) 2493 velocity_get_ip(vptr); 2494 2495 free_irq(vptr->pdev->irq, dev); 2496 2497 velocity_free_rings(vptr); 2498 2499 vptr->flags &= (~VELOCITY_FLAGS_OPENED); 2500 return 0; 2501 } 2502 2503 /** 2504 * velocity_xmit - transmit packet callback 2505 * @skb: buffer to transmit 2506 * @dev: network device 2507 * 2508 * Called by the networ layer to request a packet is queued to 2509 * the velocity. Returns zero on success. 2510 */ 2511 static netdev_tx_t velocity_xmit(struct sk_buff *skb, 2512 struct net_device *dev) 2513 { 2514 struct velocity_info *vptr = netdev_priv(dev); 2515 int qnum = 0; 2516 struct tx_desc *td_ptr; 2517 struct velocity_td_info *tdinfo; 2518 unsigned long flags; 2519 int pktlen; 2520 int index, prev; 2521 int i = 0; 2522 2523 if (skb_padto(skb, ETH_ZLEN)) 2524 goto out; 2525 2526 /* The hardware can handle at most 7 memory segments, so merge 2527 * the skb if there are more */ 2528 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) { 2529 kfree_skb(skb); 2530 return NETDEV_TX_OK; 2531 } 2532 2533 pktlen = skb_shinfo(skb)->nr_frags == 0 ? 2534 max_t(unsigned int, skb->len, ETH_ZLEN) : 2535 skb_headlen(skb); 2536 2537 spin_lock_irqsave(&vptr->lock, flags); 2538 2539 index = vptr->tx.curr[qnum]; 2540 td_ptr = &(vptr->tx.rings[qnum][index]); 2541 tdinfo = &(vptr->tx.infos[qnum][index]); 2542 2543 td_ptr->tdesc1.TCR = TCR0_TIC; 2544 td_ptr->td_buf[0].size &= ~TD_QUEUE; 2545 2546 /* 2547 * Map the linear network buffer into PCI space and 2548 * add it to the transmit ring. 2549 */ 2550 tdinfo->skb = skb; 2551 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE); 2552 td_ptr->tdesc0.len = cpu_to_le16(pktlen); 2553 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]); 2554 td_ptr->td_buf[0].pa_high = 0; 2555 td_ptr->td_buf[0].size = cpu_to_le16(pktlen); 2556 2557 /* Handle fragments */ 2558 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 2559 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 2560 2561 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(&vptr->pdev->dev, 2562 frag, 0, 2563 skb_frag_size(frag), 2564 DMA_TO_DEVICE); 2565 2566 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]); 2567 td_ptr->td_buf[i + 1].pa_high = 0; 2568 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag)); 2569 } 2570 tdinfo->nskb_dma = i + 1; 2571 2572 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16; 2573 2574 if (vlan_tx_tag_present(skb)) { 2575 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb)); 2576 td_ptr->tdesc1.TCR |= TCR0_VETAG; 2577 } 2578 2579 /* 2580 * Handle hardware checksum 2581 */ 2582 if (skb->ip_summed == CHECKSUM_PARTIAL) { 2583 const struct iphdr *ip = ip_hdr(skb); 2584 if (ip->protocol == IPPROTO_TCP) 2585 td_ptr->tdesc1.TCR |= TCR0_TCPCK; 2586 else if (ip->protocol == IPPROTO_UDP) 2587 td_ptr->tdesc1.TCR |= (TCR0_UDPCK); 2588 td_ptr->tdesc1.TCR |= TCR0_IPCK; 2589 } 2590 2591 prev = index - 1; 2592 if (prev < 0) 2593 prev = vptr->options.numtx - 1; 2594 td_ptr->tdesc0.len |= OWNED_BY_NIC; 2595 vptr->tx.used[qnum]++; 2596 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx; 2597 2598 if (AVAIL_TD(vptr, qnum) < 1) 2599 netif_stop_queue(dev); 2600 2601 td_ptr = &(vptr->tx.rings[qnum][prev]); 2602 td_ptr->td_buf[0].size |= TD_QUEUE; 2603 mac_tx_queue_wake(vptr->mac_regs, qnum); 2604 2605 spin_unlock_irqrestore(&vptr->lock, flags); 2606 out: 2607 return NETDEV_TX_OK; 2608 } 2609 2610 static const struct net_device_ops velocity_netdev_ops = { 2611 .ndo_open = velocity_open, 2612 .ndo_stop = velocity_close, 2613 .ndo_start_xmit = velocity_xmit, 2614 .ndo_get_stats = velocity_get_stats, 2615 .ndo_validate_addr = eth_validate_addr, 2616 .ndo_set_mac_address = eth_mac_addr, 2617 .ndo_set_rx_mode = velocity_set_multi, 2618 .ndo_change_mtu = velocity_change_mtu, 2619 .ndo_do_ioctl = velocity_ioctl, 2620 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid, 2621 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid, 2622 }; 2623 2624 /** 2625 * velocity_init_info - init private data 2626 * @pdev: PCI device 2627 * @vptr: Velocity info 2628 * @info: Board type 2629 * 2630 * Set up the initial velocity_info struct for the device that has been 2631 * discovered. 2632 */ 2633 static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr, 2634 const struct velocity_info_tbl *info) 2635 { 2636 memset(vptr, 0, sizeof(struct velocity_info)); 2637 2638 vptr->pdev = pdev; 2639 vptr->chip_id = info->chip_id; 2640 vptr->tx.numq = info->txqueue; 2641 vptr->multicast_limit = MCAM_SIZE; 2642 spin_lock_init(&vptr->lock); 2643 } 2644 2645 /** 2646 * velocity_get_pci_info - retrieve PCI info for device 2647 * @vptr: velocity device 2648 * @pdev: PCI device it matches 2649 * 2650 * Retrieve the PCI configuration space data that interests us from 2651 * the kernel PCI layer 2652 */ 2653 static int velocity_get_pci_info(struct velocity_info *vptr, 2654 struct pci_dev *pdev) 2655 { 2656 vptr->rev_id = pdev->revision; 2657 2658 pci_set_master(pdev); 2659 2660 vptr->ioaddr = pci_resource_start(pdev, 0); 2661 vptr->memaddr = pci_resource_start(pdev, 1); 2662 2663 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) { 2664 dev_err(&pdev->dev, 2665 "region #0 is not an I/O resource, aborting.\n"); 2666 return -EINVAL; 2667 } 2668 2669 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) { 2670 dev_err(&pdev->dev, 2671 "region #1 is an I/O resource, aborting.\n"); 2672 return -EINVAL; 2673 } 2674 2675 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) { 2676 dev_err(&pdev->dev, "region #1 is too small.\n"); 2677 return -EINVAL; 2678 } 2679 vptr->pdev = pdev; 2680 2681 return 0; 2682 } 2683 2684 /** 2685 * velocity_print_info - per driver data 2686 * @vptr: velocity 2687 * 2688 * Print per driver data as the kernel driver finds Velocity 2689 * hardware 2690 */ 2691 static void velocity_print_info(struct velocity_info *vptr) 2692 { 2693 struct net_device *dev = vptr->dev; 2694 2695 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id)); 2696 printk(KERN_INFO "%s: Ethernet Address: %pM\n", 2697 dev->name, dev->dev_addr); 2698 } 2699 2700 static u32 velocity_get_link(struct net_device *dev) 2701 { 2702 struct velocity_info *vptr = netdev_priv(dev); 2703 struct mac_regs __iomem *regs = vptr->mac_regs; 2704 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0; 2705 } 2706 2707 /** 2708 * velocity_found1 - set up discovered velocity card 2709 * @pdev: PCI device 2710 * @ent: PCI device table entry that matched 2711 * 2712 * Configure a discovered adapter from scratch. Return a negative 2713 * errno error code on failure paths. 2714 */ 2715 static int velocity_found1(struct pci_dev *pdev, 2716 const struct pci_device_id *ent) 2717 { 2718 static int first = 1; 2719 struct net_device *dev; 2720 int i; 2721 const char *drv_string; 2722 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data]; 2723 struct velocity_info *vptr; 2724 struct mac_regs __iomem *regs; 2725 int ret = -ENOMEM; 2726 2727 /* FIXME: this driver, like almost all other ethernet drivers, 2728 * can support more than MAX_UNITS. 2729 */ 2730 if (velocity_nics >= MAX_UNITS) { 2731 dev_notice(&pdev->dev, "already found %d NICs.\n", 2732 velocity_nics); 2733 return -ENODEV; 2734 } 2735 2736 dev = alloc_etherdev(sizeof(struct velocity_info)); 2737 if (!dev) 2738 goto out; 2739 2740 /* Chain it all together */ 2741 2742 SET_NETDEV_DEV(dev, &pdev->dev); 2743 vptr = netdev_priv(dev); 2744 2745 2746 if (first) { 2747 printk(KERN_INFO "%s Ver. %s\n", 2748 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION); 2749 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n"); 2750 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n"); 2751 first = 0; 2752 } 2753 2754 velocity_init_info(pdev, vptr, info); 2755 2756 vptr->dev = dev; 2757 2758 ret = pci_enable_device(pdev); 2759 if (ret < 0) 2760 goto err_free_dev; 2761 2762 ret = velocity_get_pci_info(vptr, pdev); 2763 if (ret < 0) { 2764 /* error message already printed */ 2765 goto err_disable; 2766 } 2767 2768 ret = pci_request_regions(pdev, VELOCITY_NAME); 2769 if (ret < 0) { 2770 dev_err(&pdev->dev, "No PCI resources.\n"); 2771 goto err_disable; 2772 } 2773 2774 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE); 2775 if (regs == NULL) { 2776 ret = -EIO; 2777 goto err_release_res; 2778 } 2779 2780 vptr->mac_regs = regs; 2781 2782 mac_wol_reset(regs); 2783 2784 for (i = 0; i < 6; i++) 2785 dev->dev_addr[i] = readb(®s->PAR[i]); 2786 2787 2788 drv_string = dev_driver_string(&pdev->dev); 2789 2790 velocity_get_options(&vptr->options, velocity_nics, drv_string); 2791 2792 /* 2793 * Mask out the options cannot be set to the chip 2794 */ 2795 2796 vptr->options.flags &= info->flags; 2797 2798 /* 2799 * Enable the chip specified capbilities 2800 */ 2801 2802 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL); 2803 2804 vptr->wol_opts = vptr->options.wol_opts; 2805 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; 2806 2807 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs); 2808 2809 dev->netdev_ops = &velocity_netdev_ops; 2810 dev->ethtool_ops = &velocity_ethtool_ops; 2811 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT); 2812 2813 dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HW_VLAN_TX; 2814 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | 2815 NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM; 2816 2817 ret = register_netdev(dev); 2818 if (ret < 0) 2819 goto err_iounmap; 2820 2821 if (!velocity_get_link(dev)) { 2822 netif_carrier_off(dev); 2823 vptr->mii_status |= VELOCITY_LINK_FAIL; 2824 } 2825 2826 velocity_print_info(vptr); 2827 pci_set_drvdata(pdev, dev); 2828 2829 /* and leave the chip powered down */ 2830 2831 pci_set_power_state(pdev, PCI_D3hot); 2832 velocity_nics++; 2833 out: 2834 return ret; 2835 2836 err_iounmap: 2837 iounmap(regs); 2838 err_release_res: 2839 pci_release_regions(pdev); 2840 err_disable: 2841 pci_disable_device(pdev); 2842 err_free_dev: 2843 free_netdev(dev); 2844 goto out; 2845 } 2846 2847 #ifdef CONFIG_PM 2848 /** 2849 * wol_calc_crc - WOL CRC 2850 * @pattern: data pattern 2851 * @mask_pattern: mask 2852 * 2853 * Compute the wake on lan crc hashes for the packet header 2854 * we are interested in. 2855 */ 2856 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern) 2857 { 2858 u16 crc = 0xFFFF; 2859 u8 mask; 2860 int i, j; 2861 2862 for (i = 0; i < size; i++) { 2863 mask = mask_pattern[i]; 2864 2865 /* Skip this loop if the mask equals to zero */ 2866 if (mask == 0x00) 2867 continue; 2868 2869 for (j = 0; j < 8; j++) { 2870 if ((mask & 0x01) == 0) { 2871 mask >>= 1; 2872 continue; 2873 } 2874 mask >>= 1; 2875 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1); 2876 } 2877 } 2878 /* Finally, invert the result once to get the correct data */ 2879 crc = ~crc; 2880 return bitrev32(crc) >> 16; 2881 } 2882 2883 /** 2884 * velocity_set_wol - set up for wake on lan 2885 * @vptr: velocity to set WOL status on 2886 * 2887 * Set a card up for wake on lan either by unicast or by 2888 * ARP packet. 2889 * 2890 * FIXME: check static buffer is safe here 2891 */ 2892 static int velocity_set_wol(struct velocity_info *vptr) 2893 { 2894 struct mac_regs __iomem *regs = vptr->mac_regs; 2895 enum speed_opt spd_dpx = vptr->options.spd_dpx; 2896 static u8 buf[256]; 2897 int i; 2898 2899 static u32 mask_pattern[2][4] = { 2900 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */ 2901 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */ 2902 }; 2903 2904 writew(0xFFFF, ®s->WOLCRClr); 2905 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet); 2906 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet); 2907 2908 /* 2909 if (vptr->wol_opts & VELOCITY_WOL_PHY) 2910 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet); 2911 */ 2912 2913 if (vptr->wol_opts & VELOCITY_WOL_UCAST) 2914 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet); 2915 2916 if (vptr->wol_opts & VELOCITY_WOL_ARP) { 2917 struct arp_packet *arp = (struct arp_packet *) buf; 2918 u16 crc; 2919 memset(buf, 0, sizeof(struct arp_packet) + 7); 2920 2921 for (i = 0; i < 4; i++) 2922 writel(mask_pattern[0][i], ®s->ByteMask[0][i]); 2923 2924 arp->type = htons(ETH_P_ARP); 2925 arp->ar_op = htons(1); 2926 2927 memcpy(arp->ar_tip, vptr->ip_addr, 4); 2928 2929 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf, 2930 (u8 *) & mask_pattern[0][0]); 2931 2932 writew(crc, ®s->PatternCRC[0]); 2933 writew(WOLCR_ARP_EN, ®s->WOLCRSet); 2934 } 2935 2936 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet); 2937 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet); 2938 2939 writew(0x0FFF, ®s->WOLSRClr); 2940 2941 if (spd_dpx == SPD_DPX_1000_FULL) 2942 goto mac_done; 2943 2944 if (spd_dpx != SPD_DPX_AUTO) 2945 goto advertise_done; 2946 2947 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) { 2948 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) 2949 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs); 2950 2951 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs); 2952 } 2953 2954 if (vptr->mii_status & VELOCITY_SPEED_1000) 2955 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs); 2956 2957 advertise_done: 2958 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR); 2959 2960 { 2961 u8 GCR; 2962 GCR = readb(®s->CHIPGCR); 2963 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX; 2964 writeb(GCR, ®s->CHIPGCR); 2965 } 2966 2967 mac_done: 2968 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR); 2969 /* Turn on SWPTAG just before entering power mode */ 2970 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW); 2971 /* Go to bed ..... */ 2972 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW); 2973 2974 return 0; 2975 } 2976 2977 /** 2978 * velocity_save_context - save registers 2979 * @vptr: velocity 2980 * @context: buffer for stored context 2981 * 2982 * Retrieve the current configuration from the velocity hardware 2983 * and stash it in the context structure, for use by the context 2984 * restore functions. This allows us to save things we need across 2985 * power down states 2986 */ 2987 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context) 2988 { 2989 struct mac_regs __iomem *regs = vptr->mac_regs; 2990 u16 i; 2991 u8 __iomem *ptr = (u8 __iomem *)regs; 2992 2993 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4) 2994 *((u32 *) (context->mac_reg + i)) = readl(ptr + i); 2995 2996 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4) 2997 *((u32 *) (context->mac_reg + i)) = readl(ptr + i); 2998 2999 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) 3000 *((u32 *) (context->mac_reg + i)) = readl(ptr + i); 3001 3002 } 3003 3004 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state) 3005 { 3006 struct net_device *dev = pci_get_drvdata(pdev); 3007 struct velocity_info *vptr = netdev_priv(dev); 3008 unsigned long flags; 3009 3010 if (!netif_running(vptr->dev)) 3011 return 0; 3012 3013 netif_device_detach(vptr->dev); 3014 3015 spin_lock_irqsave(&vptr->lock, flags); 3016 pci_save_state(pdev); 3017 3018 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) { 3019 velocity_get_ip(vptr); 3020 velocity_save_context(vptr, &vptr->context); 3021 velocity_shutdown(vptr); 3022 velocity_set_wol(vptr); 3023 pci_enable_wake(pdev, PCI_D3hot, 1); 3024 pci_set_power_state(pdev, PCI_D3hot); 3025 } else { 3026 velocity_save_context(vptr, &vptr->context); 3027 velocity_shutdown(vptr); 3028 pci_disable_device(pdev); 3029 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 3030 } 3031 3032 spin_unlock_irqrestore(&vptr->lock, flags); 3033 return 0; 3034 } 3035 3036 /** 3037 * velocity_restore_context - restore registers 3038 * @vptr: velocity 3039 * @context: buffer for stored context 3040 * 3041 * Reload the register configuration from the velocity context 3042 * created by velocity_save_context. 3043 */ 3044 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context) 3045 { 3046 struct mac_regs __iomem *regs = vptr->mac_regs; 3047 int i; 3048 u8 __iomem *ptr = (u8 __iomem *)regs; 3049 3050 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) 3051 writel(*((u32 *) (context->mac_reg + i)), ptr + i); 3052 3053 /* Just skip cr0 */ 3054 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) { 3055 /* Clear */ 3056 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4); 3057 /* Set */ 3058 writeb(*((u8 *) (context->mac_reg + i)), ptr + i); 3059 } 3060 3061 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) 3062 writel(*((u32 *) (context->mac_reg + i)), ptr + i); 3063 3064 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) 3065 writel(*((u32 *) (context->mac_reg + i)), ptr + i); 3066 3067 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) 3068 writeb(*((u8 *) (context->mac_reg + i)), ptr + i); 3069 } 3070 3071 static int velocity_resume(struct pci_dev *pdev) 3072 { 3073 struct net_device *dev = pci_get_drvdata(pdev); 3074 struct velocity_info *vptr = netdev_priv(dev); 3075 unsigned long flags; 3076 int i; 3077 3078 if (!netif_running(vptr->dev)) 3079 return 0; 3080 3081 pci_set_power_state(pdev, PCI_D0); 3082 pci_enable_wake(pdev, 0, 0); 3083 pci_restore_state(pdev); 3084 3085 mac_wol_reset(vptr->mac_regs); 3086 3087 spin_lock_irqsave(&vptr->lock, flags); 3088 velocity_restore_context(vptr, &vptr->context); 3089 velocity_init_registers(vptr, VELOCITY_INIT_WOL); 3090 mac_disable_int(vptr->mac_regs); 3091 3092 velocity_tx_srv(vptr); 3093 3094 for (i = 0; i < vptr->tx.numq; i++) { 3095 if (vptr->tx.used[i]) 3096 mac_tx_queue_wake(vptr->mac_regs, i); 3097 } 3098 3099 mac_enable_int(vptr->mac_regs); 3100 spin_unlock_irqrestore(&vptr->lock, flags); 3101 netif_device_attach(vptr->dev); 3102 3103 return 0; 3104 } 3105 #endif 3106 3107 /* 3108 * Definition for our device driver. The PCI layer interface 3109 * uses this to handle all our card discover and plugging 3110 */ 3111 static struct pci_driver velocity_driver = { 3112 .name = VELOCITY_NAME, 3113 .id_table = velocity_id_table, 3114 .probe = velocity_found1, 3115 .remove = velocity_remove1, 3116 #ifdef CONFIG_PM 3117 .suspend = velocity_suspend, 3118 .resume = velocity_resume, 3119 #endif 3120 }; 3121 3122 3123 /** 3124 * velocity_ethtool_up - pre hook for ethtool 3125 * @dev: network device 3126 * 3127 * Called before an ethtool operation. We need to make sure the 3128 * chip is out of D3 state before we poke at it. 3129 */ 3130 static int velocity_ethtool_up(struct net_device *dev) 3131 { 3132 struct velocity_info *vptr = netdev_priv(dev); 3133 if (!netif_running(dev)) 3134 pci_set_power_state(vptr->pdev, PCI_D0); 3135 return 0; 3136 } 3137 3138 /** 3139 * velocity_ethtool_down - post hook for ethtool 3140 * @dev: network device 3141 * 3142 * Called after an ethtool operation. Restore the chip back to D3 3143 * state if it isn't running. 3144 */ 3145 static void velocity_ethtool_down(struct net_device *dev) 3146 { 3147 struct velocity_info *vptr = netdev_priv(dev); 3148 if (!netif_running(dev)) 3149 pci_set_power_state(vptr->pdev, PCI_D3hot); 3150 } 3151 3152 static int velocity_get_settings(struct net_device *dev, 3153 struct ethtool_cmd *cmd) 3154 { 3155 struct velocity_info *vptr = netdev_priv(dev); 3156 struct mac_regs __iomem *regs = vptr->mac_regs; 3157 u32 status; 3158 status = check_connection_type(vptr->mac_regs); 3159 3160 cmd->supported = SUPPORTED_TP | 3161 SUPPORTED_Autoneg | 3162 SUPPORTED_10baseT_Half | 3163 SUPPORTED_10baseT_Full | 3164 SUPPORTED_100baseT_Half | 3165 SUPPORTED_100baseT_Full | 3166 SUPPORTED_1000baseT_Half | 3167 SUPPORTED_1000baseT_Full; 3168 3169 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg; 3170 if (vptr->options.spd_dpx == SPD_DPX_AUTO) { 3171 cmd->advertising |= 3172 ADVERTISED_10baseT_Half | 3173 ADVERTISED_10baseT_Full | 3174 ADVERTISED_100baseT_Half | 3175 ADVERTISED_100baseT_Full | 3176 ADVERTISED_1000baseT_Half | 3177 ADVERTISED_1000baseT_Full; 3178 } else { 3179 switch (vptr->options.spd_dpx) { 3180 case SPD_DPX_1000_FULL: 3181 cmd->advertising |= ADVERTISED_1000baseT_Full; 3182 break; 3183 case SPD_DPX_100_HALF: 3184 cmd->advertising |= ADVERTISED_100baseT_Half; 3185 break; 3186 case SPD_DPX_100_FULL: 3187 cmd->advertising |= ADVERTISED_100baseT_Full; 3188 break; 3189 case SPD_DPX_10_HALF: 3190 cmd->advertising |= ADVERTISED_10baseT_Half; 3191 break; 3192 case SPD_DPX_10_FULL: 3193 cmd->advertising |= ADVERTISED_10baseT_Full; 3194 break; 3195 default: 3196 break; 3197 } 3198 } 3199 3200 if (status & VELOCITY_SPEED_1000) 3201 ethtool_cmd_speed_set(cmd, SPEED_1000); 3202 else if (status & VELOCITY_SPEED_100) 3203 ethtool_cmd_speed_set(cmd, SPEED_100); 3204 else 3205 ethtool_cmd_speed_set(cmd, SPEED_10); 3206 3207 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE; 3208 cmd->port = PORT_TP; 3209 cmd->transceiver = XCVR_INTERNAL; 3210 cmd->phy_address = readb(®s->MIIADR) & 0x1F; 3211 3212 if (status & VELOCITY_DUPLEX_FULL) 3213 cmd->duplex = DUPLEX_FULL; 3214 else 3215 cmd->duplex = DUPLEX_HALF; 3216 3217 return 0; 3218 } 3219 3220 static int velocity_set_settings(struct net_device *dev, 3221 struct ethtool_cmd *cmd) 3222 { 3223 struct velocity_info *vptr = netdev_priv(dev); 3224 u32 speed = ethtool_cmd_speed(cmd); 3225 u32 curr_status; 3226 u32 new_status = 0; 3227 int ret = 0; 3228 3229 curr_status = check_connection_type(vptr->mac_regs); 3230 curr_status &= (~VELOCITY_LINK_FAIL); 3231 3232 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0); 3233 new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0); 3234 new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0); 3235 new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0); 3236 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0); 3237 3238 if ((new_status & VELOCITY_AUTONEG_ENABLE) && 3239 (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) { 3240 ret = -EINVAL; 3241 } else { 3242 enum speed_opt spd_dpx; 3243 3244 if (new_status & VELOCITY_AUTONEG_ENABLE) 3245 spd_dpx = SPD_DPX_AUTO; 3246 else if ((new_status & VELOCITY_SPEED_1000) && 3247 (new_status & VELOCITY_DUPLEX_FULL)) { 3248 spd_dpx = SPD_DPX_1000_FULL; 3249 } else if (new_status & VELOCITY_SPEED_100) 3250 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ? 3251 SPD_DPX_100_FULL : SPD_DPX_100_HALF; 3252 else if (new_status & VELOCITY_SPEED_10) 3253 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ? 3254 SPD_DPX_10_FULL : SPD_DPX_10_HALF; 3255 else 3256 return -EOPNOTSUPP; 3257 3258 vptr->options.spd_dpx = spd_dpx; 3259 3260 velocity_set_media_mode(vptr, new_status); 3261 } 3262 3263 return ret; 3264 } 3265 3266 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 3267 { 3268 struct velocity_info *vptr = netdev_priv(dev); 3269 strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver)); 3270 strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version)); 3271 strlcpy(info->bus_info, pci_name(vptr->pdev), sizeof(info->bus_info)); 3272 } 3273 3274 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 3275 { 3276 struct velocity_info *vptr = netdev_priv(dev); 3277 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP; 3278 wol->wolopts |= WAKE_MAGIC; 3279 /* 3280 if (vptr->wol_opts & VELOCITY_WOL_PHY) 3281 wol.wolopts|=WAKE_PHY; 3282 */ 3283 if (vptr->wol_opts & VELOCITY_WOL_UCAST) 3284 wol->wolopts |= WAKE_UCAST; 3285 if (vptr->wol_opts & VELOCITY_WOL_ARP) 3286 wol->wolopts |= WAKE_ARP; 3287 memcpy(&wol->sopass, vptr->wol_passwd, 6); 3288 } 3289 3290 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 3291 { 3292 struct velocity_info *vptr = netdev_priv(dev); 3293 3294 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP))) 3295 return -EFAULT; 3296 vptr->wol_opts = VELOCITY_WOL_MAGIC; 3297 3298 /* 3299 if (wol.wolopts & WAKE_PHY) { 3300 vptr->wol_opts|=VELOCITY_WOL_PHY; 3301 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED; 3302 } 3303 */ 3304 3305 if (wol->wolopts & WAKE_MAGIC) { 3306 vptr->wol_opts |= VELOCITY_WOL_MAGIC; 3307 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; 3308 } 3309 if (wol->wolopts & WAKE_UCAST) { 3310 vptr->wol_opts |= VELOCITY_WOL_UCAST; 3311 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; 3312 } 3313 if (wol->wolopts & WAKE_ARP) { 3314 vptr->wol_opts |= VELOCITY_WOL_ARP; 3315 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; 3316 } 3317 memcpy(vptr->wol_passwd, wol->sopass, 6); 3318 return 0; 3319 } 3320 3321 static u32 velocity_get_msglevel(struct net_device *dev) 3322 { 3323 return msglevel; 3324 } 3325 3326 static void velocity_set_msglevel(struct net_device *dev, u32 value) 3327 { 3328 msglevel = value; 3329 } 3330 3331 static int get_pending_timer_val(int val) 3332 { 3333 int mult_bits = val >> 6; 3334 int mult = 1; 3335 3336 switch (mult_bits) 3337 { 3338 case 1: 3339 mult = 4; break; 3340 case 2: 3341 mult = 16; break; 3342 case 3: 3343 mult = 64; break; 3344 case 0: 3345 default: 3346 break; 3347 } 3348 3349 return (val & 0x3f) * mult; 3350 } 3351 3352 static void set_pending_timer_val(int *val, u32 us) 3353 { 3354 u8 mult = 0; 3355 u8 shift = 0; 3356 3357 if (us >= 0x3f) { 3358 mult = 1; /* mult with 4 */ 3359 shift = 2; 3360 } 3361 if (us >= 0x3f * 4) { 3362 mult = 2; /* mult with 16 */ 3363 shift = 4; 3364 } 3365 if (us >= 0x3f * 16) { 3366 mult = 3; /* mult with 64 */ 3367 shift = 6; 3368 } 3369 3370 *val = (mult << 6) | ((us >> shift) & 0x3f); 3371 } 3372 3373 3374 static int velocity_get_coalesce(struct net_device *dev, 3375 struct ethtool_coalesce *ecmd) 3376 { 3377 struct velocity_info *vptr = netdev_priv(dev); 3378 3379 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup; 3380 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup; 3381 3382 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer); 3383 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer); 3384 3385 return 0; 3386 } 3387 3388 static int velocity_set_coalesce(struct net_device *dev, 3389 struct ethtool_coalesce *ecmd) 3390 { 3391 struct velocity_info *vptr = netdev_priv(dev); 3392 int max_us = 0x3f * 64; 3393 unsigned long flags; 3394 3395 /* 6 bits of */ 3396 if (ecmd->tx_coalesce_usecs > max_us) 3397 return -EINVAL; 3398 if (ecmd->rx_coalesce_usecs > max_us) 3399 return -EINVAL; 3400 3401 if (ecmd->tx_max_coalesced_frames > 0xff) 3402 return -EINVAL; 3403 if (ecmd->rx_max_coalesced_frames > 0xff) 3404 return -EINVAL; 3405 3406 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames; 3407 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames; 3408 3409 set_pending_timer_val(&vptr->options.rxqueue_timer, 3410 ecmd->rx_coalesce_usecs); 3411 set_pending_timer_val(&vptr->options.txqueue_timer, 3412 ecmd->tx_coalesce_usecs); 3413 3414 /* Setup the interrupt suppression and queue timers */ 3415 spin_lock_irqsave(&vptr->lock, flags); 3416 mac_disable_int(vptr->mac_regs); 3417 setup_adaptive_interrupts(vptr); 3418 setup_queue_timers(vptr); 3419 3420 mac_write_int_mask(vptr->int_mask, vptr->mac_regs); 3421 mac_clear_isr(vptr->mac_regs); 3422 mac_enable_int(vptr->mac_regs); 3423 spin_unlock_irqrestore(&vptr->lock, flags); 3424 3425 return 0; 3426 } 3427 3428 static const char velocity_gstrings[][ETH_GSTRING_LEN] = { 3429 "rx_all", 3430 "rx_ok", 3431 "tx_ok", 3432 "rx_error", 3433 "rx_runt_ok", 3434 "rx_runt_err", 3435 "rx_64", 3436 "tx_64", 3437 "rx_65_to_127", 3438 "tx_65_to_127", 3439 "rx_128_to_255", 3440 "tx_128_to_255", 3441 "rx_256_to_511", 3442 "tx_256_to_511", 3443 "rx_512_to_1023", 3444 "tx_512_to_1023", 3445 "rx_1024_to_1518", 3446 "tx_1024_to_1518", 3447 "tx_ether_collisions", 3448 "rx_crc_errors", 3449 "rx_jumbo", 3450 "tx_jumbo", 3451 "rx_mac_control_frames", 3452 "tx_mac_control_frames", 3453 "rx_frame_alignement_errors", 3454 "rx_long_ok", 3455 "rx_long_err", 3456 "tx_sqe_errors", 3457 "rx_no_buf", 3458 "rx_symbol_errors", 3459 "in_range_length_errors", 3460 "late_collisions" 3461 }; 3462 3463 static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data) 3464 { 3465 switch (sset) { 3466 case ETH_SS_STATS: 3467 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings)); 3468 break; 3469 } 3470 } 3471 3472 static int velocity_get_sset_count(struct net_device *dev, int sset) 3473 { 3474 switch (sset) { 3475 case ETH_SS_STATS: 3476 return ARRAY_SIZE(velocity_gstrings); 3477 default: 3478 return -EOPNOTSUPP; 3479 } 3480 } 3481 3482 static void velocity_get_ethtool_stats(struct net_device *dev, 3483 struct ethtool_stats *stats, u64 *data) 3484 { 3485 if (netif_running(dev)) { 3486 struct velocity_info *vptr = netdev_priv(dev); 3487 u32 *p = vptr->mib_counter; 3488 int i; 3489 3490 spin_lock_irq(&vptr->lock); 3491 velocity_update_hw_mibs(vptr); 3492 spin_unlock_irq(&vptr->lock); 3493 3494 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++) 3495 *data++ = *p++; 3496 } 3497 } 3498 3499 static const struct ethtool_ops velocity_ethtool_ops = { 3500 .get_settings = velocity_get_settings, 3501 .set_settings = velocity_set_settings, 3502 .get_drvinfo = velocity_get_drvinfo, 3503 .get_wol = velocity_ethtool_get_wol, 3504 .set_wol = velocity_ethtool_set_wol, 3505 .get_msglevel = velocity_get_msglevel, 3506 .set_msglevel = velocity_set_msglevel, 3507 .get_link = velocity_get_link, 3508 .get_strings = velocity_get_strings, 3509 .get_sset_count = velocity_get_sset_count, 3510 .get_ethtool_stats = velocity_get_ethtool_stats, 3511 .get_coalesce = velocity_get_coalesce, 3512 .set_coalesce = velocity_set_coalesce, 3513 .begin = velocity_ethtool_up, 3514 .complete = velocity_ethtool_down 3515 }; 3516 3517 #if defined(CONFIG_PM) && defined(CONFIG_INET) 3518 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr) 3519 { 3520 struct in_ifaddr *ifa = ptr; 3521 struct net_device *dev = ifa->ifa_dev->dev; 3522 3523 if (dev_net(dev) == &init_net && 3524 dev->netdev_ops == &velocity_netdev_ops) 3525 velocity_get_ip(netdev_priv(dev)); 3526 3527 return NOTIFY_DONE; 3528 } 3529 3530 static struct notifier_block velocity_inetaddr_notifier = { 3531 .notifier_call = velocity_netdev_event, 3532 }; 3533 3534 static void velocity_register_notifier(void) 3535 { 3536 register_inetaddr_notifier(&velocity_inetaddr_notifier); 3537 } 3538 3539 static void velocity_unregister_notifier(void) 3540 { 3541 unregister_inetaddr_notifier(&velocity_inetaddr_notifier); 3542 } 3543 3544 #else 3545 3546 #define velocity_register_notifier() do {} while (0) 3547 #define velocity_unregister_notifier() do {} while (0) 3548 3549 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */ 3550 3551 /** 3552 * velocity_init_module - load time function 3553 * 3554 * Called when the velocity module is loaded. The PCI driver 3555 * is registered with the PCI layer, and in turn will call 3556 * the probe functions for each velocity adapter installed 3557 * in the system. 3558 */ 3559 static int __init velocity_init_module(void) 3560 { 3561 int ret; 3562 3563 velocity_register_notifier(); 3564 ret = pci_register_driver(&velocity_driver); 3565 if (ret < 0) 3566 velocity_unregister_notifier(); 3567 return ret; 3568 } 3569 3570 /** 3571 * velocity_cleanup - module unload 3572 * 3573 * When the velocity hardware is unloaded this function is called. 3574 * It will clean up the notifiers and the unregister the PCI 3575 * driver interface for this hardware. This in turn cleans up 3576 * all discovered interfaces before returning from the function 3577 */ 3578 static void __exit velocity_cleanup_module(void) 3579 { 3580 velocity_unregister_notifier(); 3581 pci_unregister_driver(&velocity_driver); 3582 } 3583 3584 module_init(velocity_init_module); 3585 module_exit(velocity_cleanup_module); 3586