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