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/* ----------------------------------------------------------------------- *
*
* Copyright 2006 Erwan Velu - All Rights Reserved
*
* 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, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* pci.c
*
* A module to extract pci informations
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <console.h>
#include <sys/pci.h>
#include <com32.h>
#include <stdbool.h>
#ifdef DEBUG
# define dprintf printf
#else
# define dprintf(...) ((void)0)
#endif
#define MAX_LINE 512
static char *
skipspace(char *p)
{
while ( *p && *p <= ' ' )
p++;
return p;
}
void remove_eol(char *string)
{
int j = strlen(string);
int i = 0;
for(i = 0; i < j; i++) if(string[i] == '\n') string[i] = 0;
}
int hex_to_int(char *hexa)
{
int i;
sscanf(hexa,"%x",&i);
return i;
}
void get_name_from_pci_ids(s_pci_device *pci_device)
{
char line[MAX_LINE];
char *vendor=NULL;
char vendor_id[5];
char *product=NULL;
char product_id[5];
char sub_product_id[5];
char sub_vendor_id[5];
FILE *f;
f=fopen("pci.ids","r");
if (!f)
return;
strcpy(pci_device->vendor_name,"Unknown");
strcpy(pci_device->product_name,"Unknown");
strcpy(vendor_id,"0000");
strcpy(product_id,"0000");
strcpy(sub_product_id,"0000");
strcpy(sub_vendor_id,"0000");
while ( fgets(line, sizeof line, f) ) {
if ((line[0] == '#') || (line[0] == ' ') || (line[0] == 'C') || (line[0] == 10))
continue;
if (line[0] != '\t') {
strncpy(vendor_id,line,4);
vendor_id[4]=0;
vendor=strdup(skipspace(strstr(line," ")));
remove_eol(vendor);
strcpy(product_id,"0000");
strcpy(sub_product_id,"0000");
strcpy(sub_vendor_id,"0000");
if (strstr(vendor_id,"ffff")) break;
if (hex_to_int(vendor_id)==pci_device->vendor) strcpy(pci_device->vendor_name,vendor);
} else if ((line[0] == '\t') && (line[1] != '\t')) {
product=strdup(skipspace(strstr(line," ")));
remove_eol(product);
strncpy(product_id,&line[1],4);
product_id[4]=0;
strcpy(sub_product_id,"0000");
strcpy(sub_vendor_id,"0000");
if ((hex_to_int(vendor_id)==pci_device->vendor) && (hex_to_int(product_id)==pci_device->product)) strcpy(pci_device->product_name,product);
} else if ((line[0] == '\t') && (line[1] == '\t')) {
product=skipspace(strstr(line," "));
product=strdup(skipspace(strstr(product," ")));
remove_eol(product);
strncpy(sub_vendor_id,&line[2],4);
sub_vendor_id[4]=0;
strncpy(sub_product_id,&line[7],4);
sub_product_id[4]=0;
if ((hex_to_int(vendor_id)==pci_device->vendor) && (hex_to_int(product_id)==pci_device->product) && (hex_to_int(sub_product_id)==pci_device->sub_product) && (hex_to_int(sub_vendor_id)==pci_device->sub_vendor)) strcpy(pci_device->product_name,product);
}
}
fclose(f);
}
int pci_scan(s_pci_bus_list *pci_bus_list, s_pci_device_list *pci_device_list)
{
unsigned int bus, dev, func, maxfunc;
uint32_t did, sid;
uint8_t hdrtype, rid;
pciaddr_t a;
int cfgtype;
pci_device_list->count=0;
#ifdef DEBUG
outl(~0, 0xcf8);
printf("Poking at port CF8 = %#08x\n", inl(0xcf8));
outl(0, 0xcf8);
#endif
cfgtype = pci_set_config_type(PCI_CFG_AUTO);
(void)cfgtype;
dprintf("PCI configuration type %d\n", cfgtype);
printf("Scanning PCI Buses\n");
for ( bus = 0 ; bus <= 0xff ; bus++ ) {
dprintf("Probing bus 0x%02x... \n", bus);
pci_bus_list->pci_bus[bus].id=bus;
pci_bus_list->pci_bus[bus].pci_device_count=0;
pci_bus_list->count=0;;
for ( dev = 0 ; dev <= 0x1f ; dev++ ) {
maxfunc = 0;
for ( func = 0 ; func <= maxfunc ; func++ ) {
a = pci_mkaddr(bus, dev, func, 0);
did = pci_readl(a);
if ( did == 0xffffffff || did == 0xffff0000 ||
did == 0x0000ffff || did == 0x00000000 )
continue;
hdrtype = pci_readb(a + 0x0e);
if ( hdrtype & 0x80 )
maxfunc = 7; /* Multifunction device */
// if ( hdrtype & 0x7f )
// continue; /* Ignore bridge devices */
rid = pci_readb(a + 0x08);
sid = pci_readl(a + 0x2c);
s_pci_device *pci_device = &pci_device_list->pci_device[pci_device_list->count];
pci_device->product=did>>16;
pci_device->sub_product=sid>>16;
pci_device->vendor=(did<<16)>>16;
pci_device->sub_vendor=(sid<<16)>>16;
pci_device->revision=rid;
pci_device_list->count++;
get_name_from_pci_ids(pci_device);
dprintf("Scanning: BUS %02x DID %08x (%04x:%04x) SID %08x RID %02x\n", bus, did, did>>16, (did<<16)>>16 , sid, rid);
/* Adding the detected pci device to the bus*/
pci_bus_list->pci_bus[bus].pci_device[pci_bus_list->pci_bus[bus].pci_device_count]=pci_device;
pci_bus_list->pci_bus[bus].pci_device_count++;
}
}
}
/* Detecting pci buses that have pci devices connected*/
for (bus=0;bus<=0xff;bus++) {
if (pci_bus_list->pci_bus[bus].pci_device_count>0) {
pci_bus_list->count++;
}
}
return 0;
}
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