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_DESCRIPTION("ARCnet COM20020 chipset PCI driver");
  65 MODULE_LICENSE("GPL");
  66
  67 static void led_tx_set(struct led_classdev *led_cdev,
  68                              enum led_brightness value)
  69 {
  70         struct com20020_dev *card;
  71         struct com20020_priv *priv;
  72         struct com20020_pci_card_info *ci;
  73
  74         card = container_of(led_cdev, struct com20020_dev, tx_led);
  75
  76         priv = card->pci_priv;
  77         ci = priv->ci;
  78
  79         outb(!!value, priv->misc + ci->leds[card->index].green);
  80 }
  81
  82 static void led_recon_set(struct led_classdev *led_cdev,
  83                              enum led_brightness value)
  84 {
  85         struct com20020_dev *card;
  86         struct com20020_priv *priv;
  87         struct com20020_pci_card_info *ci;
  88
  89         card = container_of(led_cdev, struct com20020_dev, recon_led);
  90
  91         priv = card->pci_priv;
  92         ci = priv->ci;
  93
  94         outb(!!value, priv->misc + ci->leds[card->index].red);
  95 }
  96
  97 static ssize_t backplane_mode_show(struct device *dev,
  98                                    struct device_attribute *attr,
  99                                    char *buf)
 100 {
 101         struct net_device *net_dev = to_net_dev(dev);
 102         struct arcnet_local *lp = netdev_priv(net_dev);
 103
 104         return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
 105 }
 106 static DEVICE_ATTR_RO(backplane_mode);
 107
 108 static struct attribute *com20020_state_attrs[] = {
 109         &dev_attr_backplane_mode.attr,
 110         NULL,
 111 };
 112
 113 static const struct attribute_group com20020_state_group = {
 114         .name = NULL,
 115         .attrs = com20020_state_attrs,
 116 };
 117
 118 static void com20020pci_remove(struct pci_dev *pdev);
 119
 120 static int com20020pci_probe(struct pci_dev *pdev,
 121                              const struct pci_device_id *id)
 122 {
 123         struct com20020_pci_card_info *ci;
 124         struct com20020_pci_channel_map *mm;
 125         struct net_device *dev;
 126         struct arcnet_local *lp;
 127         struct com20020_priv *priv;
 128         int i, ioaddr, ret;
 129         struct resource *r;
 130
 131         ret = 0;
 132
 133         if (pci_enable_device(pdev))
 134                 return -EIO;
 135
 136         priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
 137                             GFP_KERNEL);
 138         if (!priv)
 139                 return -ENOMEM;
 140
 141         ci = (struct com20020_pci_card_info *)id->driver_data;
 142         if (!ci)
 143                 return -EINVAL;
 144
 145         priv->ci = ci;
 146         mm = &ci->misc_map;
 147
 148         pci_set_drvdata(pdev, priv);
 149
 150         INIT_LIST_HEAD(&priv->list_dev);
 151
 152         if (mm->size) {
 153                 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
 154                 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
 155                                         "com20020-pci");
 156                 if (!r) {
 157                         pr_err("IO region %xh-%xh already allocated.\n",
 158                                ioaddr, ioaddr + mm->size - 1);
 159                         return -EBUSY;
 160                 }
 161                 priv->misc = ioaddr;
 162         }
 163
 164         for (i = 0; i < ci->devcount; i++) {
 165                 struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
 166                 struct com20020_dev *card;
 167                 int dev_id_mask = 0xf;
 168
 169                 dev = alloc_arcdev(device);
 170                 if (!dev) {
 171                         ret = -ENOMEM;
 172                         break;
 173                 }
 174                 dev->dev_port = i;
 175
 176                 dev->netdev_ops = &com20020_netdev_ops;
 177
 178                 lp = netdev_priv(dev);
 179
 180                 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
 181                 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
 182
 183                 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
 184                                         "com20020-pci");
 185                 if (!r) {
 186                         pr_err("IO region %xh-%xh already allocated\n",
 187                                ioaddr, ioaddr + cm->size - 1);
 188                         ret = -EBUSY;
 189                         goto err_free_arcdev;
 190                 }
 191
 192                 /* Dummy access after Reset
 193                  * ARCNET controller needs
 194                  * this access to detect bustype
 195                  */
 196                 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
 197                 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
 198
 199                 SET_NETDEV_DEV(dev, &pdev->dev);
 200                 dev->base_addr = ioaddr;
 201                 arcnet_set_addr(dev, node);
 202                 dev->sysfs_groups[0] = &com20020_state_group;
 203                 dev->irq = pdev->irq;
 204                 lp->card_name = "PCI COM20020";
 205                 lp->card_flags = ci->flags;
 206                 lp->backplane = backplane;
 207                 lp->clockp = clockp & 7;
 208                 lp->clockm = clockm & 3;
 209                 lp->timeout = timeout;
 210                 lp->hw.owner = THIS_MODULE;
 211
 212                 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
 213
 214                 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
 215                         lp->backplane = 1;
 216
 217                 if (ci->flags & ARC_HAS_ROTARY) {
 218                         /* Get the dev_id from the PLX rotary coder */
 219                         if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
 220                                 dev_id_mask = 0x3;
 221                         dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
 222                         snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
 223                 }
 224
 225                 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
 226                         pr_err("IO address %Xh is empty!\n", ioaddr);
 227                         ret = -EIO;
 228                         goto err_free_arcdev;
 229                 }
 230                 if (com20020_check(dev)) {
 231                         ret = -EIO;
 232                         goto err_free_arcdev;
 233                 }
 234
 235                 ret = com20020_found(dev, IRQF_SHARED);
 236                 if (ret)
 237                         goto err_free_arcdev;
 238
 239                 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
 240                                     GFP_KERNEL);
 241                 if (!card) {
 242                         ret = -ENOMEM;
 243                         goto err_free_arcdev;
 244                 }
 245
 246                 card->index = i;
 247                 card->pci_priv = priv;
 248
 249                 if (ci->flags & ARC_HAS_LED) {
 250                         card->tx_led.brightness_set = led_tx_set;
 251                         card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
 252                                                         GFP_KERNEL, "arc%d-%d-tx",
 253                                                         dev->dev_id, i);
 254                         card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 255                                                         "pci:green:tx:%d-%d",
 256                                                         dev->dev_id, i);
 257
 258                         card->tx_led.dev = &dev->dev;
 259                         card->recon_led.brightness_set = led_recon_set;
 260                         card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
 261                                                         GFP_KERNEL, "arc%d-%d-recon",
 262                                                         dev->dev_id, i);
 263                         card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 264                                                         "pci:red:recon:%d-%d",
 265                                                         dev->dev_id, i);
 266                         card->recon_led.dev = &dev->dev;
 267
 268                         ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
 269                         if (ret)
 270                                 goto err_free_arcdev;
 271
 272                         ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
 273                         if (ret)
 274                                 goto err_free_arcdev;
 275
 276                         dev_set_drvdata(&dev->dev, card);
 277                         devm_arcnet_led_init(dev, dev->dev_id, i);
 278                 }
 279
 280                 card->dev = dev;
 281                 list_add(&card->list, &priv->list_dev);
 282                 continue;
 283
 284 err_free_arcdev:
 285                 free_arcdev(dev);
 286                 break;
 287         }
 288         if (ret)
 289                 com20020pci_remove(pdev);
 290         return ret;
 291 }
 292
 293 static void com20020pci_remove(struct pci_dev *pdev)
 294 {
 295         struct com20020_dev *card, *tmpcard;
 296         struct com20020_priv *priv;
 297
 298         priv = pci_get_drvdata(pdev);
 299
 300         list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
 301                 struct net_device *dev = card->dev;
 302
 303                 unregister_netdev(dev);
 304                 free_irq(dev->irq, dev);
 305                 free_arcdev(dev);
 306         }
 307 }
 308
 309 static struct com20020_pci_card_info card_info_10mbit = {
 310         .name = "ARC-PCI",
 311         .devcount = 1,
 312         .chan_map_tbl = {
 313                 {
 314                         .bar = 2,
 315                         .offset = 0x00,
 316                         .size = 0x08,
 317                 },
 318         },
 319         .flags = ARC_CAN_10MBIT,
 320 };
 321
 322 static struct com20020_pci_card_info card_info_5mbit = {
 323         .name = "ARC-PCI",
 324         .devcount = 1,
 325         .chan_map_tbl = {
 326                 {
 327                         .bar = 2,
 328                         .offset = 0x00,
 329                         .size = 0x08,
 330                 },
 331         },
 332         .flags = ARC_IS_5MBIT,
 333 };
 334
 335 static struct com20020_pci_card_info card_info_sohard = {
 336         .name = "SOHARD SH ARC-PCI",
 337         .devcount = 1,
 338         /* SOHARD needs PCI base addr 4 */
 339         .chan_map_tbl = {
 340                 {
 341                         .bar = 4,
 342                         .offset = 0x00,
 343                         .size = 0x08
 344                 },
 345         },
 346         .flags = ARC_CAN_10MBIT,
 347 };
 348
 349 static struct com20020_pci_card_info card_info_eae_arc1 = {
 350         .name = "EAE PLX-PCI ARC1",
 351         .devcount = 1,
 352         .chan_map_tbl = {
 353                 {
 354                         .bar = 2,
 355                         .offset = 0x00,
 356                         .size = 0x08,
 357                 },
 358         },
 359         .misc_map = {
 360                 .bar = 2,
 361                 .offset = 0x10,
 362                 .size = 0x04,
 363         },
 364         .leds = {
 365                 {
 366                         .green = 0x0,
 367                         .red = 0x1,
 368                 },
 369         },
 370         .rotary = 0x0,
 371         .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
 372 };
 373
 374 static struct com20020_pci_card_info card_info_eae_ma1 = {
 375         .name = "EAE PLX-PCI MA1",
 376         .devcount = 2,
 377         .chan_map_tbl = {
 378                 {
 379                         .bar = 2,
 380                         .offset = 0x00,
 381                         .size = 0x08,
 382                 }, {
 383                         .bar = 2,
 384                         .offset = 0x08,
 385                         .size = 0x08,
 386                 }
 387         },
 388         .misc_map = {
 389                 .bar = 2,
 390                 .offset = 0x10,
 391                 .size = 0x04,
 392         },
 393         .leds = {
 394                 {
 395                         .green = 0x0,
 396                         .red = 0x1,
 397                 }, {
 398                         .green = 0x2,
 399                         .red = 0x3,
 400                 },
 401         },
 402         .rotary = 0x0,
 403         .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
 404 };
 405
 406 static struct com20020_pci_card_info card_info_eae_fb2 = {
 407         .name = "EAE PLX-PCI FB2",
 408         .devcount = 1,
 409         .chan_map_tbl = {
 410                 {
 411                         .bar = 2,
 412                         .offset = 0x00,
 413                         .size = 0x08,
 414                 },
 415         },
 416         .misc_map = {
 417                 .bar = 2,
 418                 .offset = 0x10,
 419                 .size = 0x04,
 420         },
 421         .leds = {
 422                 {
 423                         .green = 0x0,
 424                         .red = 0x1,
 425                 },
 426         },
 427         .rotary = 0x0,
 428         .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
 429 };
 430
 431 static const struct pci_device_id com20020pci_id_table[] = {
 432         {
 433                 0x1571, 0xa001,
 434                 PCI_ANY_ID, PCI_ANY_ID,
 435                 0, 0,
 436                 0,
 437         },
 438         {
 439                 0x1571, 0xa002,
 440                 PCI_ANY_ID, PCI_ANY_ID,
 441                 0, 0,
 442                 0,
 443         },
 444         {
 445                 0x1571, 0xa003,
 446                 PCI_ANY_ID, PCI_ANY_ID,
 447                 0, 0,
 448                 0
 449         },
 450         {
 451                 0x1571, 0xa004,
 452                 PCI_ANY_ID, PCI_ANY_ID,
 453                 0, 0,
 454                 0,
 455         },
 456         {
 457                 0x1571, 0xa005,
 458                 PCI_ANY_ID, PCI_ANY_ID,
 459                 0, 0,
 460                 0
 461         },
 462         {
 463                 0x1571, 0xa006,
 464                 PCI_ANY_ID, PCI_ANY_ID,
 465                 0, 0,
 466                 0
 467         },
 468         {
 469                 0x1571, 0xa007,
 470                 PCI_ANY_ID, PCI_ANY_ID,
 471                 0, 0,
 472                 0
 473         },
 474         {
 475                 0x1571, 0xa008,
 476                 PCI_ANY_ID, PCI_ANY_ID,
 477                 0, 0,
 478                 0
 479         },
 480         {
 481                 0x1571, 0xa009,
 482                 PCI_ANY_ID, PCI_ANY_ID,
 483                 0, 0,
 484                 (kernel_ulong_t)&card_info_5mbit
 485         },
 486         {
 487                 0x1571, 0xa00a,
 488                 PCI_ANY_ID, PCI_ANY_ID,
 489                 0, 0,
 490                 (kernel_ulong_t)&card_info_5mbit
 491         },
 492         {
 493                 0x1571, 0xa00b,
 494                 PCI_ANY_ID, PCI_ANY_ID,
 495                 0, 0,
 496                 (kernel_ulong_t)&card_info_5mbit
 497         },
 498         {
 499                 0x1571, 0xa00c,
 500                 PCI_ANY_ID, PCI_ANY_ID,
 501                 0, 0,
 502                 (kernel_ulong_t)&card_info_5mbit
 503         },
 504         {
 505                 0x1571, 0xa00d,
 506                 PCI_ANY_ID, PCI_ANY_ID,
 507                 0, 0,
 508                 (kernel_ulong_t)&card_info_5mbit
 509         },
 510         {
 511                 0x1571, 0xa00e,
 512                 PCI_ANY_ID, PCI_ANY_ID,
 513                 0, 0,
 514                 (kernel_ulong_t)&card_info_5mbit
 515         },
 516         {
 517                 0x1571, 0xa201,
 518                 PCI_ANY_ID, PCI_ANY_ID,
 519                 0, 0,
 520                 (kernel_ulong_t)&card_info_10mbit
 521         },
 522         {
 523                 0x1571, 0xa202,
 524                 PCI_ANY_ID, PCI_ANY_ID,
 525                 0, 0,
 526                 (kernel_ulong_t)&card_info_10mbit
 527         },
 528         {
 529                 0x1571, 0xa203,
 530                 PCI_ANY_ID, PCI_ANY_ID,
 531                 0, 0,
 532                 (kernel_ulong_t)&card_info_10mbit
 533         },
 534         {
 535                 0x1571, 0xa204,
 536                 PCI_ANY_ID, PCI_ANY_ID,
 537                 0, 0,
 538                 (kernel_ulong_t)&card_info_10mbit
 539         },
 540         {
 541                 0x1571, 0xa205,
 542                 PCI_ANY_ID, PCI_ANY_ID,
 543                 0, 0,
 544                 (kernel_ulong_t)&card_info_10mbit
 545         },
 546         {
 547                 0x1571, 0xa206,
 548                 PCI_ANY_ID, PCI_ANY_ID,
 549                 0, 0,
 550                 (kernel_ulong_t)&card_info_10mbit
 551         },
 552         {
 553                 0x10B5, 0x9030,
 554                 0x10B5, 0x2978,
 555                 0, 0,
 556                 (kernel_ulong_t)&card_info_sohard
 557         },
 558         {
 559                 0x10B5, 0x9050,
 560                 0x10B5, 0x2273,
 561                 0, 0,
 562                 (kernel_ulong_t)&card_info_sohard
 563         },
 564         {
 565                 0x10B5, 0x9050,
 566                 0x10B5, 0x3263,
 567                 0, 0,
 568                 (kernel_ulong_t)&card_info_eae_arc1
 569         },
 570         {
 571                 0x10B5, 0x9050,
 572                 0x10B5, 0x3292,
 573                 0, 0,
 574                 (kernel_ulong_t)&card_info_eae_ma1
 575         },
 576         {
 577                 0x10B5, 0x9050,
 578                 0x10B5, 0x3294,
 579                 0, 0,
 580                 (kernel_ulong_t)&card_info_eae_fb2
 581         },
 582         {
 583                 0x14BA, 0x6000,
 584                 PCI_ANY_ID, PCI_ANY_ID,
 585                 0, 0,
 586                 (kernel_ulong_t)&card_info_10mbit
 587         },
 588         {
 589                 0x10B5, 0x2200,
 590                 PCI_ANY_ID, PCI_ANY_ID,
 591                 0, 0,
 592                 (kernel_ulong_t)&card_info_10mbit
 593         },
 594         { 0, }
 595 };
 596
 597 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
 598
 599 static struct pci_driver com20020pci_driver = {
 600         .name           = "com20020",
 601         .id_table       = com20020pci_id_table,
 602         .probe          = com20020pci_probe,
 603         .remove         = com20020pci_remove,
 604 };
 605
 606 static int __init com20020pci_init(void)
 607 {
 608         if (BUGLVL(D_NORMAL))
 609                 pr_info("%s\n", "COM20020 PCI support");
 610         return pci_register_driver(&com20020pci_driver);
 611 }
 612
 613 static void __exit com20020pci_cleanup(void)
 614 {
 615         pci_unregister_driver(&com20020pci_driver);
 616 }
 617
 618 module_init(com20020pci_init)
 619 module_exit(com20020pci_cleanup)