1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Linux ARCnet driver - COM20020 PCI support (Contemporary Controls PCI20)
*
* Written 1994-1999 by Avery Pennarun,
* based on an ISA version by David Woodhouse.
* Written 1999-2000 by Martin Mares <mj@suse.cz>.
* Derived from skeleton.c by Donald Becker.
*
* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
* for sponsoring the further development of this driver.
*
* **********************
*
* The original copyright of skeleton.c was as follows:
*
* skeleton.c Written 1993 by Donald Becker.
* Copyright 1993 United States Government as represented by the
* Director, National Security Agency. This software may only be used
* and distributed according to the terms of the GNU Public License as
* modified by SRC, incorporated herein by reference.
*
* **********************
*
* For more details, see drivers/net/arcnet.c
*
* **********************
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/malloc.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/arcdevice.h>
#include <linux/com20020.h>
#include <asm/io.h>
#define VERSION "arcnet: COM20020 PCI support\n"
#ifdef MODULE
#define MAX_CARDS 16
static struct net_device *cards[MAX_CARDS];
static int numcards;
#endif
static void com20020pci_open_close(struct net_device *dev, bool open)
{
if (open)
MOD_INC_USE_COUNT;
else
MOD_DEC_USE_COUNT;
}
/*
* No need to probe for PCI cards - just ask the PCI layer and launch all the
* ones we find.
*/
static int __init com20020pci_probe(char *name_template, int node, int backplane, int clock, int timeout)
{
struct net_device *dev;
struct arcnet_local *lp;
struct pci_dev *pdev = NULL;
int ioaddr, gotone = 0, err;
BUGLVL(D_NORMAL) printk(VERSION);
while ((pdev = pci_find_device(0x1571, 0xa004, pdev))) {
if (pci_enable_device(pdev))
continue;
dev = dev_alloc(name_template ? : "arc%d", &err);
if (!dev)
return err;
lp = dev->priv = kmalloc(sizeof(struct arcnet_local), GFP_KERNEL);
if (!lp)
return -ENOMEM;
memset(lp, 0, sizeof(struct arcnet_local));
ioaddr = pdev->resource[2].start;
dev->base_addr = ioaddr;
dev->irq = pdev->irq;
dev->dev_addr[0] = node;
lp->backplane = backplane;
lp->clock = clock;
lp->timeout = timeout;
lp->hw.open_close_ll = com20020pci_open_close;
BUGMSG(D_INIT, "PCI BIOS reports a device at %Xh, IRQ %d\n",
ioaddr, dev->irq);
if (check_region(ioaddr, ARCNET_TOTAL_SIZE)) {
BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
continue;
}
if (ASTATUS() == 0xFF) {
BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
"but seems empty!\n", ioaddr);
continue;
}
if (com20020_check(dev))
continue;
if (!com20020_found(dev, SA_SHIRQ)) {
#ifdef MODULE
if(numcards==MAX_CARDS)
printk(KERN_WARNING "com20020pci: Too many cards. Ignoring.\n");
else
cards[numcards++] = dev;
#endif
gotone++;
}
}
return gotone ? 0 : -ENODEV;
}
#ifdef MODULE
/* Module parameters */
static int node = 0;
static char *device; /* use eg. device="arc1" to change name */
static int timeout = 3;
static int backplane = 0;
static int clock = 0;
MODULE_PARM(node, "i");
MODULE_PARM(device, "s");
MODULE_PARM(timeout, "i");
MODULE_PARM(backplane, "i");
MODULE_PARM(clock, "i");
int init_module(void)
{
return com20020pci_probe(device, node, backplane, clock & 7, timeout & 3);
}
void cleanup_module(void)
{
struct net_device *dev;
int count;
for (count = 0; count < numcards; count++) {
dev = cards[count];
unregister_netdev(dev);
free_irq(dev->irq, dev);
release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
kfree(dev->priv);
kfree(dev);
}
}
#else
void __init com20020pci_probe_all(void)
{
com20020pci_probe(NULL, 0, 0, 0, 3);
}
#endif /* MODULE */
|
