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 int dev_id_mask = 0xf; 160 161 dev = alloc_arcdev(device); 162 if (!dev) { 163 ret = -ENOMEM; 164 goto out_port; 165 } 166 dev->dev_port = i; 167 168 dev->netdev_ops = &com20020_netdev_ops; 169 170 lp = netdev_priv(dev); 171 172 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name); 173 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset; 174 175 r = devm_request_region(&pdev->dev, ioaddr, cm->size, 176 "com20020-pci"); 177 if (!r) { 178 pr_err("IO region %xh-%xh already allocated\n", 179 ioaddr, ioaddr + cm->size - 1); 180 ret = -EBUSY; 181 goto out_port; 182 } 183 184 /* Dummy access after Reset 185 * ARCNET controller needs 186 * this access to detect bustype 187 */ 188 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND); 189 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT); 190 191 SET_NETDEV_DEV(dev, &pdev->dev); 192 dev->base_addr = ioaddr; 193 dev->dev_addr[0] = node; 194 dev->sysfs_groups[0] = &com20020_state_group; 195 dev->irq = pdev->irq; 196 lp->card_name = "PCI COM20020"; 197 lp->card_flags = ci->flags; 198 lp->backplane = backplane; 199 lp->clockp = clockp & 7; 200 lp->clockm = clockm & 3; 201 lp->timeout = timeout; 202 lp->hw.owner = THIS_MODULE; 203 204 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1; 205 206 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15)) 207 lp->backplane = 1; 208 209 /* Get the dev_id from the PLX rotary coder */ 210 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15)) 211 dev_id_mask = 0x3; 212 dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask; 213 214 snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i); 215 216 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) { 217 pr_err("IO address %Xh is empty!\n", ioaddr); 218 ret = -EIO; 219 goto out_port; 220 } 221 if (com20020_check(dev)) { 222 ret = -EIO; 223 goto out_port; 224 } 225 226 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev), 227 GFP_KERNEL); 228 if (!card) 229 return -ENOMEM; 230 231 card->index = i; 232 card->pci_priv = priv; 233 card->tx_led.brightness_set = led_tx_set; 234 card->tx_led.default_trigger = devm_kasprintf(&pdev->dev, 235 GFP_KERNEL, "arc%d-%d-tx", 236 dev->dev_id, i); 237 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, 238 "pci:green:tx:%d-%d", 239 dev->dev_id, i); 240 241 card->tx_led.dev = &dev->dev; 242 card->recon_led.brightness_set = led_recon_set; 243 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev, 244 GFP_KERNEL, "arc%d-%d-recon", 245 dev->dev_id, i); 246 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, 247 "pci:red:recon:%d-%d", 248 dev->dev_id, i); 249 card->recon_led.dev = &dev->dev; 250 card->dev = dev; 251 252 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led); 253 if (ret) 254 goto out_port; 255 256 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led); 257 if (ret) 258 goto out_port; 259 260 dev_set_drvdata(&dev->dev, card); 261 262 ret = com20020_found(dev, IRQF_SHARED); 263 if (ret) 264 goto out_port; 265 266 devm_arcnet_led_init(dev, dev->dev_id, i); 267 268 list_add(&card->list, &priv->list_dev); 269 } 270 271 pci_set_drvdata(pdev, priv); 272 273 return 0; 274 275 out_port: 276 com20020pci_remove(pdev); 277 return ret; 278 } 279 280 static void com20020pci_remove(struct pci_dev *pdev) 281 { 282 struct com20020_dev *card, *tmpcard; 283 struct com20020_priv *priv; 284 285 priv = pci_get_drvdata(pdev); 286 287 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) { 288 struct net_device *dev = card->dev; 289 290 unregister_netdev(dev); 291 free_irq(dev->irq, dev); 292 free_netdev(dev); 293 } 294 } 295 296 static struct com20020_pci_card_info card_info_10mbit = { 297 .name = "ARC-PCI", 298 .devcount = 1, 299 .chan_map_tbl = { 300 { 301 .bar = 2, 302 .offset = 0x00, 303 .size = 0x08, 304 }, 305 }, 306 .flags = ARC_CAN_10MBIT, 307 }; 308 309 static struct com20020_pci_card_info card_info_5mbit = { 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_IS_5MBIT, 320 }; 321 322 static struct com20020_pci_card_info card_info_sohard = { 323 .name = "PLX-PCI", 324 .devcount = 1, 325 /* SOHARD needs PCI base addr 4 */ 326 .chan_map_tbl = { 327 { 328 .bar = 4, 329 .offset = 0x00, 330 .size = 0x08 331 }, 332 }, 333 .flags = ARC_CAN_10MBIT, 334 }; 335 336 static struct com20020_pci_card_info card_info_eae_arc1 = { 337 .name = "EAE PLX-PCI ARC1", 338 .devcount = 1, 339 .chan_map_tbl = { 340 { 341 .bar = 2, 342 .offset = 0x00, 343 .size = 0x08, 344 }, 345 }, 346 .misc_map = { 347 .bar = 2, 348 .offset = 0x10, 349 .size = 0x04, 350 }, 351 .leds = { 352 { 353 .green = 0x0, 354 .red = 0x1, 355 }, 356 }, 357 .rotary = 0x0, 358 .flags = ARC_CAN_10MBIT, 359 }; 360 361 static struct com20020_pci_card_info card_info_eae_ma1 = { 362 .name = "EAE PLX-PCI MA1", 363 .devcount = 2, 364 .chan_map_tbl = { 365 { 366 .bar = 2, 367 .offset = 0x00, 368 .size = 0x08, 369 }, { 370 .bar = 2, 371 .offset = 0x08, 372 .size = 0x08, 373 } 374 }, 375 .misc_map = { 376 .bar = 2, 377 .offset = 0x10, 378 .size = 0x04, 379 }, 380 .leds = { 381 { 382 .green = 0x0, 383 .red = 0x1, 384 }, { 385 .green = 0x2, 386 .red = 0x3, 387 }, 388 }, 389 .rotary = 0x0, 390 .flags = ARC_CAN_10MBIT, 391 }; 392 393 static struct com20020_pci_card_info card_info_eae_fb2 = { 394 .name = "EAE PLX-PCI FB2", 395 .devcount = 1, 396 .chan_map_tbl = { 397 { 398 .bar = 2, 399 .offset = 0x00, 400 .size = 0x08, 401 }, 402 }, 403 .misc_map = { 404 .bar = 2, 405 .offset = 0x10, 406 .size = 0x04, 407 }, 408 .leds = { 409 { 410 .green = 0x0, 411 .red = 0x1, 412 }, 413 }, 414 .rotary = 0x0, 415 .flags = ARC_CAN_10MBIT, 416 }; 417 418 static const struct pci_device_id com20020pci_id_table[] = { 419 { 420 0x1571, 0xa001, 421 PCI_ANY_ID, PCI_ANY_ID, 422 0, 0, 423 0, 424 }, 425 { 426 0x1571, 0xa002, 427 PCI_ANY_ID, PCI_ANY_ID, 428 0, 0, 429 0, 430 }, 431 { 432 0x1571, 0xa003, 433 PCI_ANY_ID, PCI_ANY_ID, 434 0, 0, 435 0 436 }, 437 { 438 0x1571, 0xa004, 439 PCI_ANY_ID, PCI_ANY_ID, 440 0, 0, 441 0, 442 }, 443 { 444 0x1571, 0xa005, 445 PCI_ANY_ID, PCI_ANY_ID, 446 0, 0, 447 0 448 }, 449 { 450 0x1571, 0xa006, 451 PCI_ANY_ID, PCI_ANY_ID, 452 0, 0, 453 0 454 }, 455 { 456 0x1571, 0xa007, 457 PCI_ANY_ID, PCI_ANY_ID, 458 0, 0, 459 0 460 }, 461 { 462 0x1571, 0xa008, 463 PCI_ANY_ID, PCI_ANY_ID, 464 0, 0, 465 0 466 }, 467 { 468 0x1571, 0xa009, 469 PCI_ANY_ID, PCI_ANY_ID, 470 0, 0, 471 (kernel_ulong_t)&card_info_5mbit 472 }, 473 { 474 0x1571, 0xa00a, 475 PCI_ANY_ID, PCI_ANY_ID, 476 0, 0, 477 (kernel_ulong_t)&card_info_5mbit 478 }, 479 { 480 0x1571, 0xa00b, 481 PCI_ANY_ID, PCI_ANY_ID, 482 0, 0, 483 (kernel_ulong_t)&card_info_5mbit 484 }, 485 { 486 0x1571, 0xa00c, 487 PCI_ANY_ID, PCI_ANY_ID, 488 0, 0, 489 (kernel_ulong_t)&card_info_5mbit 490 }, 491 { 492 0x1571, 0xa00d, 493 PCI_ANY_ID, PCI_ANY_ID, 494 0, 0, 495 (kernel_ulong_t)&card_info_5mbit 496 }, 497 { 498 0x1571, 0xa00e, 499 PCI_ANY_ID, PCI_ANY_ID, 500 0, 0, 501 (kernel_ulong_t)&card_info_5mbit 502 }, 503 { 504 0x1571, 0xa201, 505 PCI_ANY_ID, PCI_ANY_ID, 506 0, 0, 507 (kernel_ulong_t)&card_info_10mbit 508 }, 509 { 510 0x1571, 0xa202, 511 PCI_ANY_ID, PCI_ANY_ID, 512 0, 0, 513 (kernel_ulong_t)&card_info_10mbit 514 }, 515 { 516 0x1571, 0xa203, 517 PCI_ANY_ID, PCI_ANY_ID, 518 0, 0, 519 (kernel_ulong_t)&card_info_10mbit 520 }, 521 { 522 0x1571, 0xa204, 523 PCI_ANY_ID, PCI_ANY_ID, 524 0, 0, 525 (kernel_ulong_t)&card_info_10mbit 526 }, 527 { 528 0x1571, 0xa205, 529 PCI_ANY_ID, PCI_ANY_ID, 530 0, 0, 531 (kernel_ulong_t)&card_info_10mbit 532 }, 533 { 534 0x1571, 0xa206, 535 PCI_ANY_ID, PCI_ANY_ID, 536 0, 0, 537 (kernel_ulong_t)&card_info_10mbit 538 }, 539 { 540 0x10B5, 0x9030, 541 0x10B5, 0x2978, 542 0, 0, 543 (kernel_ulong_t)&card_info_sohard 544 }, 545 { 546 0x10B5, 0x9050, 547 0x10B5, 0x2273, 548 0, 0, 549 (kernel_ulong_t)&card_info_sohard 550 }, 551 { 552 0x10B5, 0x9050, 553 0x10B5, 0x3263, 554 0, 0, 555 (kernel_ulong_t)&card_info_eae_arc1 556 }, 557 { 558 0x10B5, 0x9050, 559 0x10B5, 0x3292, 560 0, 0, 561 (kernel_ulong_t)&card_info_eae_ma1 562 }, 563 { 564 0x10B5, 0x9050, 565 0x10B5, 0x3294, 566 0, 0, 567 (kernel_ulong_t)&card_info_eae_fb2 568 }, 569 { 570 0x14BA, 0x6000, 571 PCI_ANY_ID, PCI_ANY_ID, 572 0, 0, 573 (kernel_ulong_t)&card_info_10mbit 574 }, 575 { 576 0x10B5, 0x2200, 577 PCI_ANY_ID, PCI_ANY_ID, 578 0, 0, 579 (kernel_ulong_t)&card_info_10mbit 580 }, 581 { 0, } 582 }; 583 584 MODULE_DEVICE_TABLE(pci, com20020pci_id_table); 585 586 static struct pci_driver com20020pci_driver = { 587 .name = "com20020", 588 .id_table = com20020pci_id_table, 589 .probe = com20020pci_probe, 590 .remove = com20020pci_remove, 591 }; 592 593 static int __init com20020pci_init(void) 594 { 595 if (BUGLVL(D_NORMAL)) 596 pr_info("%s\n", "COM20020 PCI support"); 597 return pci_register_driver(&com20020pci_driver); 598 } 599 600 static void __exit com20020pci_cleanup(void) 601 { 602 pci_unregister_driver(&com20020pci_driver); 603 } 604 605 module_init(com20020pci_init) 606 module_exit(com20020pci_cleanup) 607