c.sexchat/plugins/sysinfo/unix/pci.c

172 lines
4.3 KiB
C
Raw Normal View History

2012-10-21 06:44:29 +02:00
/*
* pci.c - PCI functions for X-Sys
* Copyright (C) 1997-1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz> [PCI routines from lspci]
* Copyright (C) 2000 Tom Rini <trini@kernel.crashing.org> [XorgAutoConfig pci.c, based on lspci]
* Copyright (C) 2005, 2006 Tony Vroon
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
2012-12-23 20:36:54 +01:00
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
2012-10-21 06:44:29 +02:00
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <pci/pci.h>
#include <glib.h>
#include "sysinfo.h"
2012-10-21 06:44:29 +02:00
static struct pci_filter filter; /* Device filter */
static struct pci_access *pacc;
int bus, dev, func; /* Location of the card */
struct device {
struct device *next;
struct pci_dev *dev;
unsigned int config_cnt;
u8 config[256];
2012-10-21 06:44:29 +02:00
};
static struct device *first_dev;
static struct device *scan_device(struct pci_dev *p)
{
int how_much = 64;
struct device *d;
if (!pci_filter_match(&filter, p))
return NULL;
d = g_new0 (struct device, 1);
d->dev = p;
if (!pci_read_block(p, 0, d->config, how_much))
exit(1);
if (how_much < 128 && (d->config[PCI_HEADER_TYPE] & 0x7f) == PCI_HEADER_TYPE_CARDBUS)
{
/* For cardbus bridges, we need to fetch 64 bytes more to get the full standard header... */
if (!pci_read_block(p, 64, d->config+64, 64))
exit(1);
how_much = 128;
}
d->config_cnt = how_much;
pci_setup_cache(p, d->config, d->config_cnt);
pci_fill_info(p, PCI_FILL_IDENT);
return d;
2012-10-21 06:44:29 +02:00
}
static void scan_devices(void)
{
struct device *d;
struct pci_dev *p;
pci_scan_bus(pacc);
for(p=pacc->devices; p; p=p->next)
{
if ((d = scan_device(p)))
{
d->next = first_dev;
first_dev = d;
}
}
2012-10-21 06:44:29 +02:00
}
static u16 get_conf_word(struct device *d, unsigned int pos)
{
return d->config[pos] | (d->config[pos+1] << 8);
2012-10-21 06:44:29 +02:00
}
int pci_find_by_class(u16 *class, char *vendor, char *device)
{
struct device *d;
struct pci_dev *p;
int nomatch = 1;
/* libpci has no way to report errors it calls exit()
* so we need to manually avoid potential failures like this one */
if (!g_file_test ("/proc/bus/pci", G_FILE_TEST_EXISTS))
return 1;
2012-10-21 06:44:29 +02:00
pacc = pci_alloc();
pci_filter_init(pacc, &filter);
pci_init(pacc);
scan_devices();
for(d=first_dev; d; d=d->next)
{
p = d->dev;
/* Acquire vendor & device ID if the class matches */
if(get_conf_word(d, PCI_CLASS_DEVICE) == *class)
{
nomatch = 0;
2014-12-18 00:49:59 +01:00
g_snprintf(vendor,7,"%04x",p->vendor_id);
g_snprintf(device,7,"%04x",p->device_id);
break;
}
}
2012-10-21 06:44:29 +02:00
pci_cleanup(pacc);
return nomatch;
2012-10-21 06:44:29 +02:00
}
void pci_find_fullname(char *fullname, char *vendor, char *device)
{
char buffer[bsize];
char vendorname[bsize/2] = "";
char devicename[bsize/2] = "";
char *position;
2012-10-21 06:44:29 +02:00
int cardfound = 0;
FILE *fp;
fp = fopen (PCIIDS_FILE, "r");
if(fp == NULL)
{
2014-12-18 00:49:59 +01:00
g_snprintf(fullname, bsize, "%s:%s", vendor, device);
//sysinfo_print_error ("pci.ids file not found! You might want to adjust your pciids setting with /SYSINFO SET pciids (you can query its current value with /SYSINFO LIST).\n");
2012-10-21 06:44:29 +02:00
return;
}
while(fgets(buffer, bsize, fp) != NULL)
{
if (!isspace(buffer[0]) && strstr(buffer, vendor) != NULL)
{
position = strstr(buffer, vendor);
position += 6;
strncpy(vendorname, position, bsize/2);
position = strstr(vendorname, "\n");
*(position) = '\0';
2012-10-21 06:44:29 +02:00
break;
}
2012-10-21 06:44:29 +02:00
}
while(fgets(buffer, bsize, fp) != NULL)
{
if(strstr(buffer, device) != NULL)
{
position = strstr(buffer, device);
position += 6;
strncpy(devicename, position, bsize/2);
2012-10-21 06:44:29 +02:00
position = strstr(devicename, " (");
if (position == NULL)
position = strstr(devicename, "\n");
*(position) = '\0';
2012-10-21 06:44:29 +02:00
cardfound = 1;
break;
}
2012-10-21 06:44:29 +02:00
}
if (cardfound == 1)
2014-12-18 00:49:59 +01:00
g_snprintf(fullname, bsize, "%s %s", vendorname, devicename);
2012-10-21 06:44:29 +02:00
else
g_snprintf(fullname, bsize, "%s:%s", vendor, device);
2012-10-21 06:44:29 +02:00
fclose(fp);
}