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/*
* The PCI Library -- Device Filtering
*
* Copyright (c) 1998--2014 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdlib.h>
#include <string.h>
#include "internal.h"
void pci_filter_init_v33(struct pci_access *a UNUSED, struct pci_filter *f) VERSIONED_ABI;
char *pci_filter_parse_slot_v33(struct pci_filter *f, char *str) VERSIONED_ABI;
char *pci_filter_parse_id_v33(struct pci_filter *f, char *str) VERSIONED_ABI;
int pci_filter_match_v33(struct pci_filter *f, struct pci_dev *d) VERSIONED_ABI;
void
pci_filter_init_v33(struct pci_access *a UNUSED, struct pci_filter *f)
{
f->domain = f->bus = f->slot = f->func = -1;
f->vendor = f->device = f->device_class = -1;
}
/* Slot filter syntax: [[[domain]:][bus]:][slot][.[func]] */
char *
pci_filter_parse_slot_v33(struct pci_filter *f, char *str)
{
char *colon = strrchr(str, ':');
char *dot = strchr((colon ? colon + 1 : str), '.');
char *mid = str;
char *e, *bus, *colon2;
if (colon)
{
*colon++ = 0;
mid = colon;
colon2 = strchr(str, ':');
if (colon2)
{
*colon2++ = 0;
bus = colon2;
if (str[0] && strcmp(str, "*"))
{
long int x = strtol(str, &e, 16);
if ((e && *e) || (x < 0 || x > 0xffff))
return "Invalid domain number";
f->domain = x;
}
}
else
bus = str;
if (bus[0] && strcmp(bus, "*"))
{
long int x = strtol(bus, &e, 16);
if ((e && *e) || (x < 0 || x > 0xff))
return "Invalid bus number";
f->bus = x;
}
}
if (dot)
*dot++ = 0;
if (mid[0] && strcmp(mid, "*"))
{
long int x = strtol(mid, &e, 16);
if ((e && *e) || (x < 0 || x > 0x1f))
return "Invalid slot number";
f->slot = x;
}
if (dot && dot[0] && strcmp(dot, "*"))
{
long int x = strtol(dot, &e, 16);
if ((e && *e) || (x < 0 || x > 7))
return "Invalid function number";
f->func = x;
}
return NULL;
}
/* ID filter syntax: [vendor]:[device][:class] */
char *
pci_filter_parse_id_v33(struct pci_filter *f, char *str)
{
char *s, *c, *e;
if (!*str)
return NULL;
s = strchr(str, ':');
if (!s)
return "':' expected";
*s++ = 0;
if (str[0] && strcmp(str, "*"))
{
long int x = strtol(str, &e, 16);
if ((e && *e) || (x < 0 || x > 0xffff))
return "Invalid vendor ID";
f->vendor = x;
}
c = strchr(s, ':');
if (c)
*c++ = 0;
if (s[0] && strcmp(s, "*"))
{
long int x = strtol(s, &e, 16);
if ((e && *e) || (x < 0 || x > 0xffff))
return "Invalid device ID";
f->device = x;
}
if (c && c[0] && strcmp(s, "*"))
{
long int x = strtol(c, &e, 16);
if ((e && *e) || (x < 0 || x > 0xffff))
return "Invalid class code";
f->device_class = x;
}
return NULL;
}
int
pci_filter_match_v33(struct pci_filter *f, struct pci_dev *d)
{
if ((f->domain >= 0 && f->domain != d->domain) ||
(f->bus >= 0 && f->bus != d->bus) ||
(f->slot >= 0 && f->slot != d->dev) ||
(f->func >= 0 && f->func != d->func))
return 0;
if (f->device >= 0 || f->vendor >= 0)
{
pci_fill_info_v33(d, PCI_FILL_IDENT);
if ((f->device >= 0 && f->device != d->device_id) ||
(f->vendor >= 0 && f->vendor != d->vendor_id))
return 0;
}
if (f->device_class >= 0)
{
pci_fill_info(d, PCI_FILL_CLASS);
if (f->device_class != d->device_class)
return 0;
}
return 1;
}
/*
* Before pciutils v3.3, struct pci_filter had fewer fields,
* so we have to provide compatibility wrappers.
*/
struct pci_filter_v30 {
int domain, bus, slot, func; /* -1 = ANY */
int vendor, device;
};
void pci_filter_init_v30(struct pci_access *a, struct pci_filter_v30 *f) VERSIONED_ABI;
char *pci_filter_parse_slot_v30(struct pci_filter_v30 *f, char *str) VERSIONED_ABI;
char *pci_filter_parse_id_v30(struct pci_filter_v30 *f, char *str) VERSIONED_ABI;
int pci_filter_match_v30(struct pci_filter_v30 *f, struct pci_dev *d) VERSIONED_ABI;
static void
pci_filter_import_v30(struct pci_filter_v30 *old, struct pci_filter *new)
{
new->domain = old->domain;
new->bus = old->bus;
new->slot = old->slot;
new->func = old->func;
new->vendor = old->vendor;
new->device = old->device;
new->device_class = -1;
}
static void
pci_filter_export_v30(struct pci_filter *new, struct pci_filter_v30 *old)
{
old->domain = new->domain;
old->bus = new->bus;
old->slot = new->slot;
old->func = new->func;
old->vendor = new->vendor;
old->device = new->device;
}
void
pci_filter_init_v30(struct pci_access *a, struct pci_filter_v30 *f)
{
struct pci_filter new;
pci_filter_init_v33(a, &new);
pci_filter_export_v30(&new, f);
}
char *
pci_filter_parse_slot_v30(struct pci_filter_v30 *f, char *str)
{
struct pci_filter new;
char *err;
pci_filter_import_v30(f, &new);
if (err = pci_filter_parse_slot_v33(&new, str))
return err;
pci_filter_export_v30(&new, f);
return NULL;
}
char *
pci_filter_parse_id_v30(struct pci_filter_v30 *f, char *str)
{
struct pci_filter new;
char *err;
pci_filter_import_v30(f, &new);
if (err = pci_filter_parse_id_v33(&new, str))
return err;
if (new.device_class >= 0)
return "Filtering by class not supported in this program";
pci_filter_export_v30(&new, f);
return NULL;
}
int
pci_filter_match_v30(struct pci_filter_v30 *f, struct pci_dev *d)
{
struct pci_filter new;
pci_filter_import_v30(f, &new);
return pci_filter_match_v33(&new, d);
}
STATIC_ALIAS(void pci_filter_init(struct pci_access *a, struct pci_filter *f), pci_filter_init_v33(a, f));
SYMBOL_VERSION(pci_filter_init_v30, pci_filter_init@LIBPCI_3.0);
SYMBOL_VERSION(pci_filter_init_v33, pci_filter_init@@LIBPCI_3.3);
STATIC_ALIAS(char *pci_filter_parse_slot(struct pci_filter *f, char *str), pci_filter_parse_slot_v33(f, str));
SYMBOL_VERSION(pci_filter_parse_slot_v30, pci_filter_parse_slot@LIBPCI_3.0);
SYMBOL_VERSION(pci_filter_parse_slot_v33, pci_filter_parse_slot@@LIBPCI_3.3);
STATIC_ALIAS(char *pci_filter_parse_id(struct pci_filter *f, char *str), pci_filter_parse_id_v33(f, str));
SYMBOL_VERSION(pci_filter_parse_id_v30, pci_filter_parse_id@LIBPCI_3.0);
SYMBOL_VERSION(pci_filter_parse_id_v33, pci_filter_parse_id@@LIBPCI_3.3);
STATIC_ALIAS(int pci_filter_match(struct pci_filter *f, struct pci_dev *d), pci_filter_match_v33(f, d));
SYMBOL_VERSION(pci_filter_match_v30, pci_filter_match@LIBPCI_3.0);
SYMBOL_VERSION(pci_filter_match_v33, pci_filter_match@@LIBPCI_3.3);
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