Release 4.14 drivers/pci/pci-stub.c
/* pci-stub - simple stub driver to reserve a pci device
*
* Copyright (C) 2008 Red Hat, Inc.
* Author:
* Chris Wright
*
* This work is licensed under the terms of the GNU GPL, version 2.
*
* Usage is simple, allocate a new id to the stub driver and bind the
* device to it. For example:
*
* # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id
* # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind
* # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind
* # ls -l /sys/bus/pci/devices/0000:00:19.0/driver
* .../0000:00:19.0/driver -> ../../../bus/pci/drivers/pci-stub
*/
#include <linux/module.h>
#include <linux/pci.h>
static char ids[1024] __initdata;
module_param_string(ids, ids, sizeof(ids), 0);
MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the stub driver, format is "
"\"vendor:device[:subvendor[:subdevice[:class[:class_mask]]]]\""
" and multiple comma separated entries can be specified");
static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
dev_info(&dev->dev, "claimed by stub\n");
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wright | 20 | 66.67% | 1 | 33.33% |
| Tejun Heo | 9 | 30.00% | 1 | 33.33% |
| Joe Perches | 1 | 3.33% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static struct pci_driver stub_driver = {
.name = "pci-stub",
.id_table = NULL, /* only dynamic id's */
.probe = pci_stub_probe,
};
static int __init pci_stub_init(void)
{
char *p, *id;
int rc;
rc = pci_register_driver(&stub_driver);
if (rc)
return rc;
/* no ids passed actually */
if (ids[0] == '\0')
return 0;
/* add ids specified in the module parameter */
p = ids;
while ((id = strsep(&p, ","))) {
unsigned int vendor, device, subvendor = PCI_ANY_ID,
subdevice = PCI_ANY_ID, class = 0, class_mask = 0;
int fields;
if (!strlen(id))
continue;
fields = sscanf(id, "%x:%x:%x:%x:%x:%x",
&vendor, &device, &subvendor, &subdevice,
&class, &class_mask);
if (fields < 2) {
printk(KERN_WARNING
"pci-stub: invalid id string \"%s\"\n", id);
continue;
}
printk(KERN_INFO
"pci-stub: add %04X:%04X sub=%04X:%04X cls=%08X/%08X\n",
vendor, device, subvendor, subdevice, class, class_mask);
rc = pci_add_dynid(&stub_driver, vendor, device,
subvendor, subdevice, class, class_mask, 0);
if (rc)
printk(KERN_WARNING
"pci-stub: failed to add dynamic id (%d)\n", rc);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tejun Heo | 173 | 86.07% | 2 | 50.00% |
| Chris Wright | 15 | 7.46% | 1 | 25.00% |
| Yinghai Lu | 13 | 6.47% | 1 | 25.00% |
| Total | 201 | 100.00% | 4 | 100.00% |
static void __exit pci_stub_exit(void)
{
pci_unregister_driver(&stub_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wright | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_init(pci_stub_init);
module_exit(pci_stub_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Chris Wright <chrisw@sous-sol.org>");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tejun Heo | 213 | 65.14% | 2 | 33.33% |
| Chris Wright | 99 | 30.28% | 1 | 16.67% |
| Yinghai Lu | 13 | 3.98% | 1 | 16.67% |
| Björn Helgaas | 1 | 0.31% | 1 | 16.67% |
| Joe Perches | 1 | 0.31% | 1 | 16.67% |
| Total | 327 | 100.00% | 6 | 100.00% |
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