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