forked from Minki/linux
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
|
/*
|
||
|
|
* PCI Backend - Handles the virtual fields found on the capability lists
|
||
|
|
* in the configuration space.
|
||
|
|
*
|
||
|
|
* Author: Ryan Wilson <hap9@epoch.ncsc.mil>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include "pciback.h"
|
||
|
|
#include "conf_space.h"
|
||
|
|
#include "conf_space_capability.h"
|
||
|
|
|
||
|
|
static LIST_HEAD(capabilities);
|
||
|
|
|
||
|
|
static const struct config_field caplist_header[] = {
|
||
|
|
{
|
||
|
|
.offset = PCI_CAP_LIST_ID,
|
||
|
|
.size = 2, /* encompass PCI_CAP_LIST_ID & PCI_CAP_LIST_NEXT */
|
||
|
|
.u.w.read = pciback_read_config_word,
|
||
|
|
.u.w.write = NULL,
|
||
|
|
},
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline void register_capability(struct pciback_config_capability *cap)
|
||
|
|
{
|
||
|
|
list_add_tail(&cap->cap_list, &capabilities);
|
||
|
|
}
|
||
|
|
|
||
|
|
int pciback_config_capability_add_fields(struct pci_dev *dev)
|
||
|
|
{
|
||
|
|
int err = 0;
|
||
|
|
struct pciback_config_capability *cap;
|
||
|
|
int cap_offset;
|
||
|
|
|
||
|
|
list_for_each_entry(cap, &capabilities, cap_list) {
|
||
|
|
cap_offset = pci_find_capability(dev, cap->capability);
|
||
|
|
if (cap_offset) {
|
||
|
|
dev_dbg(&dev->dev, "Found capability 0x%x at 0x%x\n",
|
||
|
|
cap->capability, cap_offset);
|
||
|
|
|
||
|
|
err = pciback_config_add_fields_offset(dev,
|
||
|
|
caplist_header,
|
||
|
|
cap_offset);
|
||
|
|
if (err)
|
||
|
|
goto out;
|
||
|
|
err = pciback_config_add_fields_offset(dev,
|
||
|
|
cap->fields,
|
||
|
|
cap_offset);
|
||
|
|
if (err)
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int pciback_config_capability_init(void)
|
||
|
|
{
|
||
|
|
register_capability(&pciback_config_capability_vpd);
|
||
|
|
register_capability(&pciback_config_capability_pm);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|