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