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