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/errno.h>
35 #include <linux/netdevice.h>
36 #include <linux/init.h>
37 #include <linux/interrupt.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 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 
76 	dev->netdev_ops = &com20020_netdev_ops;
77 
78 	lp = netdev_priv(dev);
79 
80 	pci_set_drvdata(pdev, dev);
81 
82 	// SOHARD needs PCI base addr 4
83 	if (pdev->vendor==0x10B5) {
84 		BUGMSG(D_NORMAL, "SOHARD\n");
85 		ioaddr = pci_resource_start(pdev, 4);
86 	}
87 	else {
88 		BUGMSG(D_NORMAL, "Contemporary Controls\n");
89 		ioaddr = pci_resource_start(pdev, 2);
90 	}
91 
92 	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com20020-pci")) {
93 		BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
94 		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
95 		err = -EBUSY;
96 		goto out_dev;
97 	}
98 
99 	// Dummy access after Reset
100 	// ARCNET controller needs this access to detect bustype
101 	outb(0x00,ioaddr+1);
102 	inb(ioaddr+1);
103 
104 	dev->base_addr = ioaddr;
105 	dev->irq = pdev->irq;
106 	dev->dev_addr[0] = node;
107 	lp->card_name = "PCI COM20020";
108 	lp->card_flags = id->driver_data;
109 	lp->backplane = backplane;
110 	lp->clockp = clockp & 7;
111 	lp->clockm = clockm & 3;
112 	lp->timeout = timeout;
113 	lp->hw.owner = THIS_MODULE;
114 
115 	if (ASTATUS() == 0xFF) {
116 		BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
117 		       "but seems empty!\n", ioaddr);
118 		err = -EIO;
119 		goto out_port;
120 	}
121 	if (com20020_check(dev)) {
122 		err = -EIO;
123 		goto out_port;
124 	}
125 
126 	if ((err = com20020_found(dev, IRQF_SHARED)) != 0)
127 	        goto out_port;
128 
129 	return 0;
130 
131 out_port:
132 	release_region(ioaddr, ARCNET_TOTAL_SIZE);
133 out_dev:
134 	free_netdev(dev);
135 	return err;
136 }
137 
138 static void com20020pci_remove(struct pci_dev *pdev)
139 {
140 	struct net_device *dev = pci_get_drvdata(pdev);
141 	unregister_netdev(dev);
142 	free_irq(dev->irq, dev);
143 	release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
144 	free_netdev(dev);
145 }
146 
147 static DEFINE_PCI_DEVICE_TABLE(com20020pci_id_table) = {
148 	{ 0x1571, 0xa001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
149 	{ 0x1571, 0xa002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
150 	{ 0x1571, 0xa003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
151 	{ 0x1571, 0xa004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
152 	{ 0x1571, 0xa005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
153 	{ 0x1571, 0xa006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
154 	{ 0x1571, 0xa007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
155 	{ 0x1571, 0xa008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
156 	{ 0x1571, 0xa009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
157 	{ 0x1571, 0xa00a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
158 	{ 0x1571, 0xa00b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
159 	{ 0x1571, 0xa00c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
160 	{ 0x1571, 0xa00d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
161 	{ 0x1571, 0xa00e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
162 	{ 0x1571, 0xa201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
163 	{ 0x1571, 0xa202, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
164 	{ 0x1571, 0xa203, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
165 	{ 0x1571, 0xa204, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
166 	{ 0x1571, 0xa205, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
167 	{ 0x1571, 0xa206, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
168 	{ 0x10B5, 0x9030, 0x10B5,     0x2978,     0, 0, ARC_CAN_10MBIT },
169 	{ 0x10B5, 0x9050, 0x10B5,     0x2273,     0, 0, ARC_CAN_10MBIT },
170 	{ 0x14BA, 0x6000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
171 	{ 0x10B5, 0x2200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
172 	{0,}
173 };
174 
175 MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
176 
177 static struct pci_driver com20020pci_driver = {
178 	.name		= "com20020",
179 	.id_table	= com20020pci_id_table,
180 	.probe		= com20020pci_probe,
181 	.remove		= com20020pci_remove,
182 };
183 
184 static int __init com20020pci_init(void)
185 {
186 	BUGLVL(D_NORMAL) printk(VERSION);
187 	return pci_register_driver(&com20020pci_driver);
188 }
189 
190 static void __exit com20020pci_cleanup(void)
191 {
192 	pci_unregister_driver(&com20020pci_driver);
193 }
194 
195 module_init(com20020pci_init)
196 module_exit(com20020pci_cleanup)
197