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
|
/*
* File: portdrv_pci.c
* Purpose: PCI Express Port Bus Driver
*
* Copyright (C) 2004 Intel
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/pm.h>
#include <linux/init.h>
#include <linux/pcieport_if.h>
#include "portdrv.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v1.0"
#define DRIVER_AUTHOR "tom.l.nguyen@intel.com"
#define DRIVER_DESC "PCIE Port Bus Driver"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
/* global data */
static const char device_name[] = "pcieport-driver";
/*
* pcie_portdrv_probe - Probe PCI-Express port devices
* @dev: PCI-Express port device being probed
*
* If detected invokes the pcie_port_device_register() method for
* this port device.
*
*/
static int __devinit pcie_portdrv_probe (struct pci_dev *dev,
const struct pci_device_id *id )
{
int status;
status = pcie_port_device_probe(dev);
if (status)
return status;
if (pci_enable_device(dev) < 0)
return -ENODEV;
pci_set_master(dev);
if (!dev->irq) {
printk(KERN_WARNING
"%s->Dev[%04x:%04x] has invalid IRQ. Check vendor BIOS\n",
__FUNCTION__, dev->device, dev->vendor);
}
if (pcie_port_device_register(dev))
return -ENOMEM;
return 0;
}
static void pcie_portdrv_remove (struct pci_dev *dev)
{
pcie_port_device_remove(dev);
}
#ifdef CONFIG_PM
static int pcie_portdrv_suspend (struct pci_dev *dev, u32 state)
{
return pcie_port_device_suspend(dev, state);
}
static int pcie_portdrv_resume (struct pci_dev *dev)
{
return pcie_port_device_resume(dev);
}
#endif
/*
* LINUX Device Driver Model
*/
static const struct pci_device_id port_pci_ids[] = { {
/* handle any PCI-Express port */
PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0),
}, { /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, port_pci_ids);
static struct pci_driver pcie_portdrv = {
.name = (char *)device_name,
.id_table = &port_pci_ids[0],
.probe = pcie_portdrv_probe,
.remove = pcie_portdrv_remove,
#ifdef CONFIG_PM
.suspend = pcie_portdrv_suspend,
.resume = pcie_portdrv_resume,
#endif /* PM */
};
static int __init pcie_portdrv_init(void)
{
int retval = 0;
pcie_port_bus_register();
retval = pci_register_driver(&pcie_portdrv);
if (retval)
pcie_port_bus_unregister();
return retval;
}
static void __exit pcie_portdrv_exit(void)
{
pci_unregister_driver(&pcie_portdrv);
pcie_port_bus_unregister();
}
module_init(pcie_portdrv_init);
module_exit(pcie_portdrv_exit);
|
