2 * Linux ARCnet driver - COM20020 PCI support
3 * Contemporary Controls PCI20 and SOHARD SH-ARC PCI
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.
10 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
11 * for sponsoring the further development of this driver.
13 * **********************
15 * The original copyright of skeleton.c was as follows:
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.
23 * **********************
25 * For more details, see drivers/net/arcnet.c
27 * **********************
30 #define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
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>
44 #include <linux/leds.h>
46 #include "arcdevice.h"
49 /* Module parameters */
52 static char device[9]; /* use eg. device="arc1" to change name */
53 static int timeout = 3;
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");
66 static void led_tx_set(struct led_classdev *led_cdev,
67 enum led_brightness value)
69 struct com20020_dev *card;
70 struct com20020_priv *priv;
71 struct com20020_pci_card_info *ci;
73 card = container_of(led_cdev, struct com20020_dev, tx_led);
75 priv = card->pci_priv;
78 outb(!!value, priv->misc + ci->leds[card->index].green);
81 static void led_recon_set(struct led_classdev *led_cdev,
82 enum led_brightness value)
84 struct com20020_dev *card;
85 struct com20020_priv *priv;
86 struct com20020_pci_card_info *ci;
88 card = container_of(led_cdev, struct com20020_dev, recon_led);
90 priv = card->pci_priv;
93 outb(!!value, priv->misc + ci->leds[card->index].red);
96 static ssize_t backplane_mode_show(struct device *dev,
97 struct device_attribute *attr,
100 struct net_device *net_dev = to_net_dev(dev);
101 struct arcnet_local *lp = netdev_priv(net_dev);
103 return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
105 static DEVICE_ATTR_RO(backplane_mode);
107 static struct attribute *com20020_state_attrs[] = {
108 &dev_attr_backplane_mode.attr,
112 static const struct attribute_group com20020_state_group = {
114 .attrs = com20020_state_attrs,
117 static void com20020pci_remove(struct pci_dev *pdev);
119 static int com20020pci_probe(struct pci_dev *pdev,
120 const struct pci_device_id *id)
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;
132 if (pci_enable_device(pdev))
135 priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
140 ci = (struct com20020_pci_card_info *)id->driver_data;
147 pci_set_drvdata(pdev, priv);
149 INIT_LIST_HEAD(&priv->list_dev);
152 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
153 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
156 pr_err("IO region %xh-%xh already allocated.\n",
157 ioaddr, ioaddr + mm->size - 1);
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;
168 dev = alloc_arcdev(device);
175 dev->netdev_ops = &com20020_netdev_ops;
177 lp = netdev_priv(dev);
179 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
180 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
182 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
185 pr_err("IO region %xh-%xh already allocated\n",
186 ioaddr, ioaddr + cm->size - 1);
188 goto err_free_arcdev;
191 /* Dummy access after Reset
192 * ARCNET controller needs
193 * this access to detect bustype
195 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
196 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
198 SET_NETDEV_DEV(dev, &pdev->dev);
199 dev->base_addr = ioaddr;
200 dev->dev_addr[0] = 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;
211 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
213 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
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))
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);
224 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
225 pr_err("IO address %Xh is empty!\n", ioaddr);
227 goto err_free_arcdev;
229 if (com20020_check(dev)) {
231 goto err_free_arcdev;
234 ret = com20020_found(dev, IRQF_SHARED);
236 goto err_free_arcdev;
238 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
242 goto err_free_arcdev;
246 card->pci_priv = priv;
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",
253 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
254 "pci:green:tx:%d-%d",
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",
262 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
263 "pci:red:recon:%d-%d",
265 card->recon_led.dev = &dev->dev;
267 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
269 goto err_free_arcdev;
271 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
273 goto err_free_arcdev;
275 dev_set_drvdata(&dev->dev, card);
276 devm_arcnet_led_init(dev, dev->dev_id, i);
280 list_add(&card->list, &priv->list_dev);
288 com20020pci_remove(pdev);
292 static void com20020pci_remove(struct pci_dev *pdev)
294 struct com20020_dev *card, *tmpcard;
295 struct com20020_priv *priv;
297 priv = pci_get_drvdata(pdev);
299 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
300 struct net_device *dev = card->dev;
302 unregister_netdev(dev);
303 free_irq(dev->irq, dev);
308 static struct com20020_pci_card_info card_info_10mbit = {
318 .flags = ARC_CAN_10MBIT,
321 static struct com20020_pci_card_info card_info_5mbit = {
331 .flags = ARC_IS_5MBIT,
334 static struct com20020_pci_card_info card_info_sohard = {
335 .name = "SOHARD SH ARC-PCI",
337 /* SOHARD needs PCI base addr 4 */
345 .flags = ARC_CAN_10MBIT,
348 static struct com20020_pci_card_info card_info_eae_arc1 = {
349 .name = "EAE PLX-PCI ARC1",
370 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
373 static struct com20020_pci_card_info card_info_eae_ma1 = {
374 .name = "EAE PLX-PCI MA1",
402 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
405 static struct com20020_pci_card_info card_info_eae_fb2 = {
406 .name = "EAE PLX-PCI FB2",
427 .flags = ARC_HAS_ROTARY | ARC_HAS_LED | ARC_CAN_10MBIT,
430 static const struct pci_device_id com20020pci_id_table[] = {
433 PCI_ANY_ID, PCI_ANY_ID,
439 PCI_ANY_ID, PCI_ANY_ID,
445 PCI_ANY_ID, PCI_ANY_ID,
451 PCI_ANY_ID, PCI_ANY_ID,
457 PCI_ANY_ID, PCI_ANY_ID,
463 PCI_ANY_ID, PCI_ANY_ID,
469 PCI_ANY_ID, PCI_ANY_ID,
475 PCI_ANY_ID, PCI_ANY_ID,
481 PCI_ANY_ID, PCI_ANY_ID,
483 (kernel_ulong_t)&card_info_5mbit
487 PCI_ANY_ID, PCI_ANY_ID,
489 (kernel_ulong_t)&card_info_5mbit
493 PCI_ANY_ID, PCI_ANY_ID,
495 (kernel_ulong_t)&card_info_5mbit
499 PCI_ANY_ID, PCI_ANY_ID,
501 (kernel_ulong_t)&card_info_5mbit
505 PCI_ANY_ID, PCI_ANY_ID,
507 (kernel_ulong_t)&card_info_5mbit
511 PCI_ANY_ID, PCI_ANY_ID,
513 (kernel_ulong_t)&card_info_5mbit
517 PCI_ANY_ID, PCI_ANY_ID,
519 (kernel_ulong_t)&card_info_10mbit
523 PCI_ANY_ID, PCI_ANY_ID,
525 (kernel_ulong_t)&card_info_10mbit
529 PCI_ANY_ID, PCI_ANY_ID,
531 (kernel_ulong_t)&card_info_10mbit
535 PCI_ANY_ID, PCI_ANY_ID,
537 (kernel_ulong_t)&card_info_10mbit
541 PCI_ANY_ID, PCI_ANY_ID,
543 (kernel_ulong_t)&card_info_10mbit
547 PCI_ANY_ID, PCI_ANY_ID,
549 (kernel_ulong_t)&card_info_10mbit
555 (kernel_ulong_t)&card_info_sohard
561 (kernel_ulong_t)&card_info_sohard
567 (kernel_ulong_t)&card_info_eae_arc1
573 (kernel_ulong_t)&card_info_eae_ma1
579 (kernel_ulong_t)&card_info_eae_fb2
583 PCI_ANY_ID, PCI_ANY_ID,
585 (kernel_ulong_t)&card_info_10mbit
589 PCI_ANY_ID, PCI_ANY_ID,
591 (kernel_ulong_t)&card_info_10mbit
596 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
598 static struct pci_driver com20020pci_driver = {
600 .id_table = com20020pci_id_table,
601 .probe = com20020pci_probe,
602 .remove = com20020pci_remove,
605 static int __init com20020pci_init(void)
607 if (BUGLVL(D_NORMAL))
608 pr_info("%s\n", "COM20020 PCI support");
609 return pci_register_driver(&com20020pci_driver);
612 static void __exit com20020pci_cleanup(void)
614 pci_unregister_driver(&com20020pci_driver);
617 module_init(com20020pci_init)
618 module_exit(com20020pci_cleanup)