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/*
* PCI Backend - Configuration space overlay for Vital Product Data
*
* Author: Ryan Wilson <hap9@epoch.ncsc.mil>
*/
#include <linux/pci.h>
#include "conf_space.h"
#include "conf_space_capability.h"
static int vpd_address_write(struct pci_dev *dev, int offset, u16 value,
void *data)
{
/* Disallow writes to the vital product data */
if (value & PCI_VPD_ADDR_F)
return PCIBIOS_SET_FAILED;
else
return pci_write_config_word(dev, offset, value);
}
static const struct config_field caplist_vpd[] = {
{
.offset = PCI_VPD_ADDR,
.size = 2,
.u.w.read = pciback_read_config_word,
.u.w.write = vpd_address_write,
},
{
.offset = PCI_VPD_DATA,
.size = 4,
.u.dw.read = pciback_read_config_dword,
.u.dw.write = NULL,
},
{}
};
struct pciback_config_capability pciback_config_capability_vpd = {
.capability = PCI_CAP_ID_VPD,
.fields = caplist_vpd,
};
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