diff options
Diffstat (limited to 'plugins/sysinfo/pci.c')
| -rw-r--r-- | plugins/sysinfo/pci.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/plugins/sysinfo/pci.c b/plugins/sysinfo/pci.c new file mode 100644 index 00000000..21f23c3e --- /dev/null +++ b/plugins/sysinfo/pci.c @@ -0,0 +1,149 @@ +/* + * 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 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <unistd.h> +#include <pci/pci.h> +#include "xsys.h" + +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]; +}; + +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 = malloc(sizeof(struct device)); + bzero(d, sizeof(*d)); + 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; +} + +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; + } +} + +static u16 get_conf_word(struct device *d, unsigned int pos) +{ + return d->config[pos] | (d->config[pos+1] << 8); +} + +int pci_find_by_class(u16 *class, char *vendor, char *device) +{ + struct device *d; + struct pci_dev *p; + int nomatch = 1; + + 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; + snprintf(vendor,7,"%04x",p->vendor_id); + snprintf(device,7,"%04x",p->device_id); + break; + } + } + + pci_cleanup(pacc); + return nomatch; +} + +void pci_find_fullname(char *fullname, char *vendor, char *device) +{ + char buffer[bsize], vendorname[bsize/2] = "", devicename[bsize/2] = "", *position; + int cardfound = 0; + FILE *fp = fopen(PCIIDS, "r"); + if(fp == NULL) { + snprintf(fullname, bsize, "%s:%s", vendor, device); + 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'; + break; + } + } + while(fgets(buffer, bsize, fp) != NULL) { + if(strstr(buffer, device) != NULL) { + position = strstr(buffer, device); + position += 6; + strncpy(devicename, position, bsize/2); + position = strstr(devicename, " ("); + if (position == NULL) + position = strstr(devicename, "\n"); + *(position) = '\0'; + cardfound = 1; + break; + } + } + if (cardfound == 1) + snprintf(fullname, bsize, "%s %s", vendorname, devicename); + else + snprintf(fullname, bsize, "%s:%s", vendor, device); + fclose(fp); +} |