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;
130 if (pci_enable_device(pdev))
133 priv = devm_kzalloc(&pdev->dev, sizeof(struct com20020_priv),
138 ci = (struct com20020_pci_card_info *)id->driver_data;
145 INIT_LIST_HEAD(&priv->list_dev);
148 ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset;
149 r = devm_request_region(&pdev->dev, ioaddr, mm->size,
152 pr_err("IO region %xh-%xh already allocated.\n",
153 ioaddr, ioaddr + mm->size - 1);
159 for (i = 0; i < ci->devcount; i++) {
160 struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i];
161 struct com20020_dev *card;
162 int dev_id_mask = 0xf;
164 dev = alloc_arcdev(device);
171 dev->netdev_ops = &com20020_netdev_ops;
173 lp = netdev_priv(dev);
175 arc_printk(D_NORMAL, dev, "%s Controls\n", ci->name);
176 ioaddr = pci_resource_start(pdev, cm->bar) + cm->offset;
178 r = devm_request_region(&pdev->dev, ioaddr, cm->size,
181 pr_err("IO region %xh-%xh already allocated\n",
182 ioaddr, ioaddr + cm->size - 1);
187 /* Dummy access after Reset
188 * ARCNET controller needs
189 * this access to detect bustype
191 arcnet_outb(0x00, ioaddr, COM20020_REG_W_COMMAND);
192 arcnet_inb(ioaddr, COM20020_REG_R_DIAGSTAT);
194 SET_NETDEV_DEV(dev, &pdev->dev);
195 dev->base_addr = ioaddr;
196 dev->dev_addr[0] = node;
197 dev->sysfs_groups[0] = &com20020_state_group;
198 dev->irq = pdev->irq;
199 lp->card_name = "PCI COM20020";
200 lp->card_flags = ci->flags;
201 lp->backplane = backplane;
202 lp->clockp = clockp & 7;
203 lp->clockm = clockm & 3;
204 lp->timeout = timeout;
205 lp->hw.owner = THIS_MODULE;
207 lp->backplane = (inb(priv->misc) >> (2 + i)) & 0x1;
209 if (!strncmp(ci->name, "EAE PLX-PCI FB2", 15))
212 /* Get the dev_id from the PLX rotary coder */
213 if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15))
215 dev->dev_id = (inb(priv->misc + ci->rotary) >> 4) & dev_id_mask;
217 snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i);
219 if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
220 pr_err("IO address %Xh is empty!\n", ioaddr);
224 if (com20020_check(dev)) {
229 card = devm_kzalloc(&pdev->dev, sizeof(struct com20020_dev),
237 card->pci_priv = priv;
238 card->tx_led.brightness_set = led_tx_set;
239 card->tx_led.default_trigger = devm_kasprintf(&pdev->dev,
240 GFP_KERNEL, "arc%d-%d-tx",
242 card->tx_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
243 "pci:green:tx:%d-%d",
246 card->tx_led.dev = &dev->dev;
247 card->recon_led.brightness_set = led_recon_set;
248 card->recon_led.default_trigger = devm_kasprintf(&pdev->dev,
249 GFP_KERNEL, "arc%d-%d-recon",
251 card->recon_led.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
252 "pci:red:recon:%d-%d",
254 card->recon_led.dev = &dev->dev;
257 ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
261 ret = devm_led_classdev_register(&pdev->dev, &card->recon_led);
265 dev_set_drvdata(&dev->dev, card);
267 ret = com20020_found(dev, IRQF_SHARED);
271 devm_arcnet_led_init(dev, dev->dev_id, i);
273 list_add(&card->list, &priv->list_dev);
276 pci_set_drvdata(pdev, priv);
281 com20020pci_remove(pdev);
285 static void com20020pci_remove(struct pci_dev *pdev)
287 struct com20020_dev *card, *tmpcard;
288 struct com20020_priv *priv;
290 priv = pci_get_drvdata(pdev);
292 list_for_each_entry_safe(card, tmpcard, &priv->list_dev, list) {
293 struct net_device *dev = card->dev;
295 unregister_netdev(dev);
296 free_irq(dev->irq, dev);
301 static struct com20020_pci_card_info card_info_10mbit = {
311 .flags = ARC_CAN_10MBIT,
314 static struct com20020_pci_card_info card_info_5mbit = {
324 .flags = ARC_IS_5MBIT,
327 static struct com20020_pci_card_info card_info_sohard = {
330 /* SOHARD needs PCI base addr 4 */
338 .flags = ARC_CAN_10MBIT,
341 static struct com20020_pci_card_info card_info_eae_arc1 = {
342 .name = "EAE PLX-PCI ARC1",
363 .flags = ARC_CAN_10MBIT,
366 static struct com20020_pci_card_info card_info_eae_ma1 = {
367 .name = "EAE PLX-PCI MA1",
395 .flags = ARC_CAN_10MBIT,
398 static struct com20020_pci_card_info card_info_eae_fb2 = {
399 .name = "EAE PLX-PCI FB2",
420 .flags = ARC_CAN_10MBIT,
423 static const struct pci_device_id com20020pci_id_table[] = {
426 PCI_ANY_ID, PCI_ANY_ID,
432 PCI_ANY_ID, PCI_ANY_ID,
438 PCI_ANY_ID, PCI_ANY_ID,
444 PCI_ANY_ID, PCI_ANY_ID,
450 PCI_ANY_ID, PCI_ANY_ID,
456 PCI_ANY_ID, PCI_ANY_ID,
462 PCI_ANY_ID, PCI_ANY_ID,
468 PCI_ANY_ID, PCI_ANY_ID,
474 PCI_ANY_ID, PCI_ANY_ID,
476 (kernel_ulong_t)&card_info_5mbit
480 PCI_ANY_ID, PCI_ANY_ID,
482 (kernel_ulong_t)&card_info_5mbit
486 PCI_ANY_ID, PCI_ANY_ID,
488 (kernel_ulong_t)&card_info_5mbit
492 PCI_ANY_ID, PCI_ANY_ID,
494 (kernel_ulong_t)&card_info_5mbit
498 PCI_ANY_ID, PCI_ANY_ID,
500 (kernel_ulong_t)&card_info_5mbit
504 PCI_ANY_ID, PCI_ANY_ID,
506 (kernel_ulong_t)&card_info_5mbit
510 PCI_ANY_ID, PCI_ANY_ID,
512 (kernel_ulong_t)&card_info_10mbit
516 PCI_ANY_ID, PCI_ANY_ID,
518 (kernel_ulong_t)&card_info_10mbit
522 PCI_ANY_ID, PCI_ANY_ID,
524 (kernel_ulong_t)&card_info_10mbit
528 PCI_ANY_ID, PCI_ANY_ID,
530 (kernel_ulong_t)&card_info_10mbit
534 PCI_ANY_ID, PCI_ANY_ID,
536 (kernel_ulong_t)&card_info_10mbit
540 PCI_ANY_ID, PCI_ANY_ID,
542 (kernel_ulong_t)&card_info_10mbit
548 (kernel_ulong_t)&card_info_sohard
554 (kernel_ulong_t)&card_info_sohard
560 (kernel_ulong_t)&card_info_eae_arc1
566 (kernel_ulong_t)&card_info_eae_ma1
572 (kernel_ulong_t)&card_info_eae_fb2
576 PCI_ANY_ID, PCI_ANY_ID,
578 (kernel_ulong_t)&card_info_10mbit
582 PCI_ANY_ID, PCI_ANY_ID,
584 (kernel_ulong_t)&card_info_10mbit
589 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
591 static struct pci_driver com20020pci_driver = {
593 .id_table = com20020pci_id_table,
594 .probe = com20020pci_probe,
595 .remove = com20020pci_remove,
598 static int __init com20020pci_init(void)
600 if (BUGLVL(D_NORMAL))
601 pr_info("%s\n", "COM20020 PCI support");
602 return pci_register_driver(&com20020pci_driver);
605 static void __exit com20020pci_cleanup(void)
607 pci_unregister_driver(&com20020pci_driver);
610 module_init(com20020pci_init)
611 module_exit(com20020pci_cleanup)