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