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 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <linux/kernel.h>
32 #include <linux/types.h>
33 #include <linux/ioport.h>
34 #include <linux/slab.h>
35 #include <linux/errno.h>
36 #include <linux/netdevice.h>
37 #include <linux/init.h>
38 #include <linux/pci.h>
39 #include <linux/arcdevice.h>
40 #include <linux/com20020.h>
41 
42 #include <asm/io.h>
43 
44 
45 #define VERSION "arcnet: COM20020 PCI support\n"
46 
47 /* Module parameters */
48 
49 static int node;
50 static char device[9];		/* use eg. device="arc1" to change name */
51 static int timeout = 3;
52 static int backplane;
53 static int clockp;
54 static int clockm;
55 
56 module_param(node, int, 0);
57 module_param_string(device, device, sizeof(device), 0);
58 module_param(timeout, int, 0);
59 module_param(backplane, int, 0);
60 module_param(clockp, int, 0);
61 module_param(clockm, int, 0);
62 MODULE_LICENSE("GPL");
63 
64 static int __devinit com20020pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
65 {
66 	struct net_device *dev;
67 	struct arcnet_local *lp;
68 	int ioaddr, err;
69 
70 	if (pci_enable_device(pdev))
71 		return -EIO;
72 	dev = alloc_arcdev(device);
73 	if (!dev)
74 		return -ENOMEM;
75 	lp = dev->priv;
76 
77 	pci_set_drvdata(pdev, dev);
78 
79 	// SOHARD needs PCI base addr 4
80 	if (pdev->vendor==0x10B5) {
81 		BUGMSG(D_NORMAL, "SOHARD\n");
82 		ioaddr = pci_resource_start(pdev, 4);
83 	}
84 	else {
85 		BUGMSG(D_NORMAL, "Contemporary Controls\n");
86 		ioaddr = pci_resource_start(pdev, 2);
87 	}
88 
89 	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com20020-pci")) {
90 		BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
91 		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
92 		err = -EBUSY;
93 		goto out_dev;
94 	}
95 
96 	// Dummy access after Reset
97 	// ARCNET controller needs this access to detect bustype
98 	outb(0x00,ioaddr+1);
99 	inb(ioaddr+1);
100 
101 	dev->base_addr = ioaddr;
102 	dev->irq = pdev->irq;
103 	dev->dev_addr[0] = node;
104 	lp->card_name = "PCI COM20020";
105 	lp->card_flags = id->driver_data;
106 	lp->backplane = backplane;
107 	lp->clockp = clockp & 7;
108 	lp->clockm = clockm & 3;
109 	lp->timeout = timeout;
110 	lp->hw.owner = THIS_MODULE;
111 
112 	if (ASTATUS() == 0xFF) {
113 		BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
114 		       "but seems empty!\n", ioaddr);
115 		err = -EIO;
116 		goto out_port;
117 	}
118 	if (com20020_check(dev)) {
119 		err = -EIO;
120 		goto out_port;
121 	}
122 
123 	if ((err = com20020_found(dev, IRQF_SHARED)) != 0)
124 	        goto out_port;
125 
126 	return 0;
127 
128 out_port:
129 	release_region(ioaddr, ARCNET_TOTAL_SIZE);
130 out_dev:
131 	free_netdev(dev);
132 	return err;
133 }
134 
135 static void __devexit com20020pci_remove(struct pci_dev *pdev)
136 {
137 	struct net_device *dev = pci_get_drvdata(pdev);
138 	unregister_netdev(dev);
139 	free_irq(dev->irq, dev);
140 	release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
141 	free_netdev(dev);
142 }
143 
144 static struct pci_device_id com20020pci_id_table[] = {
145 	{ 0x1571, 0xa001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
146 	{ 0x1571, 0xa002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
147 	{ 0x1571, 0xa003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
148 	{ 0x1571, 0xa004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
149 	{ 0x1571, 0xa005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
150 	{ 0x1571, 0xa006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
151 	{ 0x1571, 0xa007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
152 	{ 0x1571, 0xa008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
153 	{ 0x1571, 0xa009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
154 	{ 0x1571, 0xa00a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
155 	{ 0x1571, 0xa00b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
156 	{ 0x1571, 0xa00c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
157 	{ 0x1571, 0xa00d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
158 	{ 0x1571, 0xa00e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
159 	{ 0x1571, 0xa201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
160 	{ 0x1571, 0xa202, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
161 	{ 0x1571, 0xa203, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
162 	{ 0x1571, 0xa204, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
163 	{ 0x1571, 0xa205, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
164 	{ 0x1571, 0xa206, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
165 	{ 0x10B5, 0x9030, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
166 	{ 0x10B5, 0x9050, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
167 	{ 0x14BA, 0x6000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
168 	{ 0x10B5, 0x2200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
169 	{0,}
170 };
171 
172 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
173 
174 static struct pci_driver com20020pci_driver = {
175 	.name		= "com20020",
176 	.id_table	= com20020pci_id_table,
177 	.probe		= com20020pci_probe,
178 	.remove		= __devexit_p(com20020pci_remove),
179 };
180 
181 static int __init com20020pci_init(void)
182 {
183 	BUGLVL(D_NORMAL) printk(VERSION);
184 	return pci_register_driver(&com20020pci_driver);
185 }
186 
187 static void __exit com20020pci_cleanup(void)
188 {
189 	pci_unregister_driver(&com20020pci_driver);
190 }
191 
192 module_init(com20020pci_init)
193 module_exit(com20020pci_cleanup)
194