drivers/net/arcnet/com20020-pci.c

   1 /*
   2  * Linux ARCnet driver - COM20020 PCI support
   3  * Contemporary Controls PCI20 and SOHARD SH-ARC PCI
   4  *
   5  * Written 1994-1999 by Avery Pennarun,
   6  *    based on an ISA version by David Woodhouse.
   7  * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
   8  * Derived from skeleton.c by Donald Becker.
   9  *
  10  * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
  11  *  for sponsoring the further development of this driver.
  12  *
  13  * **********************
  14  *
  15  * The original copyright of skeleton.c was as follows:
  16  *
  17  * skeleton.c Written 1993 by Donald Becker.
  18  * Copyright 1993 United States Government as represented by the
  19  * Director, National Security Agency.  This software may only be used
  20  * and distributed according to the terms of the GNU General Public License as
  21  * modified by SRC, incorporated herein by reference.
  22  *
  23  * **********************
  24  *
  25  * For more details, see drivers/net/arcnet.c
  26  *
  27  * **********************
  28  */
  29
  30 #define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/kernel.h>
  35 #include <linux/types.h>
  36 #include <linux/ioport.h>
  37 #include <linux/errno.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/init.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/pci.h>
  42 #include <linux/list.h>
  43 #include <linux/io.h>
  44 #include <linux/leds.h>
  45
  46 #include "arcdevice.h"
  47 #include "com20020.h"
  48
  49 /* Module parameters */
  50
  51 static int node;
  52 static char device[9];          /* use eg. device="arc1" to change name */
  53 static int timeout = 3;
  54 static int backplane;
  55 static int clockp;
  56 static int clockm;
  57
  58 module_param(node, int, 0);
  59 module_param_string(device, device, sizeof(device), 0);
  60 module_param(timeout, int, 0);
  61 module_param(backplane, int, 0);
  62 module_param(clockp, int, 0);
  63 module_param(clockm, int, 0);
  64 MODULE_LICENSE("GPL");
  65
  66 static void led_tx_set(struct led_classdev *led_cdev,
  67                              enum led_brightness value)
  68 {
  69         struct com20020_dev *card;
  70         struct com20020_priv *priv;
  71         struct com20020_pci_card_info *ci;
  72
  73         card = container_of(led_cdev, struct com20020_dev, tx_led);
  74
  75         priv = card->pci_priv;
  76         ci = priv->ci;
  77
  78         outb(!!value, priv->misc + ci->leds[card->index].green);
  79 }
  80
  81 static void led_recon_set(struct led_classdev *led_cdev,
  82                              enum led_brightness value)
  83 {
  84         struct com20020_dev *card;
  85         struct com20020_priv *priv;
  86         struct com20020_pci_card_info *ci;
  87
  88         card = container_of(led_cdev, struct com20020_dev, recon_led);
  89
  90         priv = card->pci_priv;
  91         ci = priv->ci;
  92
  93         outb(!!value, priv->misc + ci->leds[card->index].red);
  94 }
  95
  96 static ssize_t backplane_mode_show(struct device *dev,
  97                                    struct device_attribute *attr,
  98                                    char *buf)
  99 {
 100         struct net_device *net_dev = to_net_dev(dev);
 101         struct arcnet_local *lp = netdev_priv(net_dev);
 102
 103         return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
 104 }
 105 static DEVICE_ATTR_RO(backplane_mode);
 106
 107 static struct attribute *com20020_state_attrs[] = {
 108         &dev_attr_backplane_mode.attr,
 109         NULL,
 110 };
 111
 112 static const struct attribute_group com20020_state_group = {
 113         .name = NULL,
 114         .attrs = com20020_state_attrs,
 115 };
 116
 117 static void com20020pci_remove(struct pci_dev *pdev);
 118
 119 static int com20020pci_probe(struct pci_dev *pdev,
 120                              const struct pci_device_id *id)
 121 {
 122         struct com20020_pci_card_info *ci;
 123         struct com20020_pci_channel_map *mm;
 124         struct net_device *dev;
 125         struct arcnet_local *lp;
 126         struct com20020_priv *priv;
 127         int i, ioaddr, ret;
 128         struct resource *r;
 129
 130         ret = 0;
 131
 132         if (pci_enable_device(pdev))
 133                 return -EIO;
 134
 135         priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
 136                             GFP_KERNEL);
 137         if (!priv)
 138                 return -ENOMEM;
 139
 140         ci = (struct com20020_pci_card_info *)id->driver_data;
 141         priv->ci = ci;
 142         mm = &ci->misc_map;
 143
 144         pci_set_drvdata(pdev, priv);
 145
 146         INIT_LIST_HEAD(&priv->list_dev);
 147
 148         if (mm->size) {
 149                 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
 150                 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
 151                                         "com20020-pci");
 152                 if (!r) {
 153                         pr_err("IO region %xh-%xh already allocated.\n",
 154                                ioaddr, ioaddr + mm->size - 1);
 155                         return -EBUSY;
 156                 }
 157                 priv->misc = ioaddr;
 158         }
 159
 160         for (i = 0; i < ci->devcount; i++) {
 161                 struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
 162                 struct com20020_dev *card;
 163                 int dev_id_mask = 0xf;
 164
 165                 dev = alloc_arcdev(device);
 166                 if (!dev) {
 167                         ret = -ENOMEM;
 168                         break;
 169                 }
 170                 dev->dev_port = i;
 171
 172                 dev->netdev_ops = &com20020_netdev_ops;
 173
 174                 lp = netdev_priv(dev);
 175
 176                 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
 177                 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
 178
 179                 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
 180                                         "com20020-pci");
 181                 if (!r) {
 182                         pr_err("IO region %xh-%xh already allocated\n",
 183                                ioaddr, ioaddr + cm->size - 1);
 184                         ret = -EBUSY;
 185                         goto err_free_arcdev;
 186                 }
 187
 188                 /* Dummy access after Reset
 189                  * ARCNET controller needs
 190                  * this access to detect bustype
 191                  */
 192                 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
 193                 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
 194
 195                 SET_NETDEV_DEV(dev, &pdev->dev);
 196                 dev->base_addr = ioaddr;
 197                 dev->dev_addr[0] = node;
 198                 dev->sysfs_groups[0] = &com20020_state_group;
 199                 dev->irq = pdev->irq;
 200                 lp->card_name = "PCI COM20020";
 201                 lp->card_flags = ci->flags;
 202                 lp->backplane = backplane;
 203                 lp->clockp = clockp & 7;
 204                 lp->clockm = clockm & 3;
 205                 lp->timeout = timeout;
 206                 lp->hw.owner = THIS_MODULE;
 207
 208                 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
 209
 210                 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
 211                         lp->backplane = 1;
 212
 213                 /* Get the dev_id from the PLX rotary coder */
 214                 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
 215                         dev_id_mask = 0x3;
 216                 dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
 217
 218                 snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
 219
 220                 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
 221                         pr_err("IO address %Xh is empty!\n", ioaddr);
 222                         ret = -EIO;
 223                         goto err_free_arcdev;
 224                 }
 225                 if (com20020_check(dev)) {
 226                         ret = -EIO;
 227                         goto err_free_arcdev;
 228                 }
 229
 230                 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
 231                                     GFP_KERNEL);
 232                 if (!card) {
 233                         ret = -ENOMEM;
 234                         goto err_free_arcdev;
 235                 }
 236
 237                 card->index = i;
 238                 card->pci_priv = priv;
 239                 card->tx_led.brightness_set = led_tx_set;
 240                 card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
 241                                                 GFP_KERNEL, "arc%d-%d-tx",
 242                                                 dev->dev_id, i);
 243                 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 244                                                 "pci:green:tx:%d-%d",
 245                                                 dev->dev_id, i);
 246
 247                 card->tx_led.dev = &dev->dev;
 248                 card->recon_led.brightness_set = led_recon_set;
 249                 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
 250                                                 GFP_KERNEL, "arc%d-%d-recon",
 251                                                 dev->dev_id, i);
 252                 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 253                                                 "pci:red:recon:%d-%d",
 254                                                 dev->dev_id, i);
 255                 card->recon_led.dev = &dev->dev;
 256                 card->dev = dev;
 257
 258                 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
 259                 if (ret)
 260                         goto err_free_arcdev;
 261
 262                 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
 263                 if (ret)
 264                         goto err_free_arcdev;
 265
 266                 dev_set_drvdata(&dev->dev, card);
 267
 268                 ret = com20020_found(dev, IRQF_SHARED);
 269                 if (ret)
 270                         goto err_free_arcdev;
 271
 272                 devm_arcnet_led_init(dev, dev->dev_id, i);
 273
 274                 list_add(&card->list, &priv->list_dev);
 275                 continue;
 276
 277 err_free_arcdev:
 278                 free_arcdev(dev);
 279                 break;
 280         }
 281         if (ret)
 282                 com20020pci_remove(pdev);
 283         return ret;
 284 }
 285
 286 static void com20020pci_remove(struct pci_dev *pdev)
 287 {
 288         struct com20020_dev *card, *tmpcard;
 289         struct com20020_priv *priv;
 290
 291         priv = pci_get_drvdata(pdev);
 292
 293         list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
 294                 struct net_device *dev = card->dev;
 295
 296                 unregister_netdev(dev);
 297                 free_irq(dev->irq, dev);
 298                 free_arcdev(dev);
 299         }
 300 }
 301
 302 static struct com20020_pci_card_info card_info_10mbit = {
 303         .name = "ARC-PCI",
 304         .devcount = 1,
 305         .chan_map_tbl = {
 306                 {
 307                         .bar = 2,
 308                         .offset = 0x00,
 309                         .size = 0x08,
 310                 },
 311         },
 312         .flags = ARC_CAN_10MBIT,
 313 };
 314
 315 static struct com20020_pci_card_info card_info_5mbit = {
 316         .name = "ARC-PCI",
 317         .devcount = 1,
 318         .chan_map_tbl = {
 319                 {
 320                         .bar = 2,
 321                         .offset = 0x00,
 322                         .size = 0x08,
 323                 },
 324         },
 325         .flags = ARC_IS_5MBIT,
 326 };
 327
 328 static struct com20020_pci_card_info card_info_sohard = {
 329         .name = "PLX-PCI",
 330         .devcount = 1,
 331         /* SOHARD needs PCI base addr 4 */
 332         .chan_map_tbl = {
 333                 {
 334                         .bar = 4,
 335                         .offset = 0x00,
 336                         .size = 0x08
 337                 },
 338         },
 339         .flags = ARC_CAN_10MBIT,
 340 };
 341
 342 static struct com20020_pci_card_info card_info_eae_arc1 = {
 343         .name = "EAE PLX-PCI ARC1",
 344         .devcount = 1,
 345         .chan_map_tbl = {
 346                 {
 347                         .bar = 2,
 348                         .offset = 0x00,
 349                         .size = 0x08,
 350                 },
 351         },
 352         .misc_map = {
 353                 .bar = 2,
 354                 .offset = 0x10,
 355                 .size = 0x04,
 356         },
 357         .leds = {
 358                 {
 359                         .green = 0x0,
 360                         .red = 0x1,
 361                 },
 362         },
 363         .rotary = 0x0,
 364         .flags = ARC_CAN_10MBIT,
 365 };
 366
 367 static struct com20020_pci_card_info card_info_eae_ma1 = {
 368         .name = "EAE PLX-PCI MA1",
 369         .devcount = 2,
 370         .chan_map_tbl = {
 371                 {
 372                         .bar = 2,
 373                         .offset = 0x00,
 374                         .size = 0x08,
 375                 }, {
 376                         .bar = 2,
 377                         .offset = 0x08,
 378                         .size = 0x08,
 379                 }
 380         },
 381         .misc_map = {
 382                 .bar = 2,
 383                 .offset = 0x10,
 384                 .size = 0x04,
 385         },
 386         .leds = {
 387                 {
 388                         .green = 0x0,
 389                         .red = 0x1,
 390                 }, {
 391                         .green = 0x2,
 392                         .red = 0x3,
 393                 },
 394         },
 395         .rotary = 0x0,
 396         .flags = ARC_CAN_10MBIT,
 397 };
 398
 399 static struct com20020_pci_card_info card_info_eae_fb2 = {
 400         .name = "EAE PLX-PCI FB2",
 401         .devcount = 1,
 402         .chan_map_tbl = {
 403                 {
 404                         .bar = 2,
 405                         .offset = 0x00,
 406                         .size = 0x08,
 407                 },
 408         },
 409         .misc_map = {
 410                 .bar = 2,
 411                 .offset = 0x10,
 412                 .size = 0x04,
 413         },
 414         .leds = {
 415                 {
 416                         .green = 0x0,
 417                         .red = 0x1,
 418                 },
 419         },
 420         .rotary = 0x0,
 421         .flags = ARC_CAN_10MBIT,
 422 };
 423
 424 static const struct pci_device_id com20020pci_id_table[] = {
 425         {
 426                 0x1571, 0xa001,
 427                 PCI_ANY_ID, PCI_ANY_ID,
 428                 0, 0,
 429                 0,
 430         },
 431         {
 432                 0x1571, 0xa002,
 433                 PCI_ANY_ID, PCI_ANY_ID,
 434                 0, 0,
 435                 0,
 436         },
 437         {
 438                 0x1571, 0xa003,
 439                 PCI_ANY_ID, PCI_ANY_ID,
 440                 0, 0,
 441                 0
 442         },
 443         {
 444                 0x1571, 0xa004,
 445                 PCI_ANY_ID, PCI_ANY_ID,
 446                 0, 0,
 447                 0,
 448         },
 449         {
 450                 0x1571, 0xa005,
 451                 PCI_ANY_ID, PCI_ANY_ID,
 452                 0, 0,
 453                 0
 454         },
 455         {
 456                 0x1571, 0xa006,
 457                 PCI_ANY_ID, PCI_ANY_ID,
 458                 0, 0,
 459                 0
 460         },
 461         {
 462                 0x1571, 0xa007,
 463                 PCI_ANY_ID, PCI_ANY_ID,
 464                 0, 0,
 465                 0
 466         },
 467         {
 468                 0x1571, 0xa008,
 469                 PCI_ANY_ID, PCI_ANY_ID,
 470                 0, 0,
 471                 0
 472         },
 473         {
 474                 0x1571, 0xa009,
 475                 PCI_ANY_ID, PCI_ANY_ID,
 476                 0, 0,
 477                 (kernel_ulong_t)&card_info_5mbit
 478         },
 479         {
 480                 0x1571, 0xa00a,
 481                 PCI_ANY_ID, PCI_ANY_ID,
 482                 0, 0,
 483                 (kernel_ulong_t)&card_info_5mbit
 484         },
 485         {
 486                 0x1571, 0xa00b,
 487                 PCI_ANY_ID, PCI_ANY_ID,
 488                 0, 0,
 489                 (kernel_ulong_t)&card_info_5mbit
 490         },
 491         {
 492                 0x1571, 0xa00c,
 493                 PCI_ANY_ID, PCI_ANY_ID,
 494                 0, 0,
 495                 (kernel_ulong_t)&card_info_5mbit
 496         },
 497         {
 498                 0x1571, 0xa00d,
 499                 PCI_ANY_ID, PCI_ANY_ID,
 500                 0, 0,
 501                 (kernel_ulong_t)&card_info_5mbit
 502         },
 503         {
 504                 0x1571, 0xa00e,
 505                 PCI_ANY_ID, PCI_ANY_ID,
 506                 0, 0,
 507                 (kernel_ulong_t)&card_info_5mbit
 508         },
 509         {
 510                 0x1571, 0xa201,
 511                 PCI_ANY_ID, PCI_ANY_ID,
 512                 0, 0,
 513                 (kernel_ulong_t)&card_info_10mbit
 514         },
 515         {
 516                 0x1571, 0xa202,
 517                 PCI_ANY_ID, PCI_ANY_ID,
 518                 0, 0,
 519                 (kernel_ulong_t)&card_info_10mbit
 520         },
 521         {
 522                 0x1571, 0xa203,
 523                 PCI_ANY_ID, PCI_ANY_ID,
 524                 0, 0,
 525                 (kernel_ulong_t)&card_info_10mbit
 526         },
 527         {
 528                 0x1571, 0xa204,
 529                 PCI_ANY_ID, PCI_ANY_ID,
 530                 0, 0,
 531                 (kernel_ulong_t)&card_info_10mbit
 532         },
 533         {
 534                 0x1571, 0xa205,
 535                 PCI_ANY_ID, PCI_ANY_ID,
 536                 0, 0,
 537                 (kernel_ulong_t)&card_info_10mbit
 538         },
 539         {
 540                 0x1571, 0xa206,
 541                 PCI_ANY_ID, PCI_ANY_ID,
 542                 0, 0,
 543                 (kernel_ulong_t)&card_info_10mbit
 544         },
 545         {
 546                 0x10B5, 0x9030,
 547                 0x10B5, 0x2978,
 548                 0, 0,
 549                 (kernel_ulong_t)&card_info_sohard
 550         },
 551         {
 552                 0x10B5, 0x9050,
 553                 0x10B5, 0x2273,
 554                 0, 0,
 555                 (kernel_ulong_t)&card_info_sohard
 556         },
 557         {
 558                 0x10B5, 0x9050,
 559                 0x10B5, 0x3263,
 560                 0, 0,
 561                 (kernel_ulong_t)&card_info_eae_arc1
 562         },
 563         {
 564                 0x10B5, 0x9050,
 565                 0x10B5, 0x3292,
 566                 0, 0,
 567                 (kernel_ulong_t)&card_info_eae_ma1
 568         },
 569         {
 570                 0x10B5, 0x9050,
 571                 0x10B5, 0x3294,
 572                 0, 0,
 573                 (kernel_ulong_t)&card_info_eae_fb2
 574         },
 575         {
 576                 0x14BA, 0x6000,
 577                 PCI_ANY_ID, PCI_ANY_ID,
 578                 0, 0,
 579                 (kernel_ulong_t)&card_info_10mbit
 580         },
 581         {
 582                 0x10B5, 0x2200,
 583                 PCI_ANY_ID, PCI_ANY_ID,
 584                 0, 0,
 585                 (kernel_ulong_t)&card_info_10mbit
 586         },
 587         { 0, }
 588 };
 589
 590 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
 591
 592 static struct pci_driver com20020pci_driver = {
 593         .name           = "com20020",
 594         .id_table       = com20020pci_id_table,
 595         .probe          = com20020pci_probe,
 596         .remove         = com20020pci_remove,
 597 };
 598
 599 static int __init com20020pci_init(void)
 600 {
 601         if (BUGLVL(D_NORMAL))
 602                 pr_info("%s\n", "COM20020 PCI support");
 603         return pci_register_driver(&com20020pci_driver);
 604 }
 605
 606 static void __exit com20020pci_cleanup(void)
 607 {
 608         pci_unregister_driver(&com20020pci_driver);
 609 }
 610
 611 module_init(com20020pci_init)
 612 module_exit(com20020pci_cleanup)