1 #include <stdint.h> 2 #include <stdio.h> 3 #include <byteswap.h> 4 #include <gpxe/isa_ids.h> 5 6 /* 7 * EISA and ISAPnP IDs are actually mildly human readable, though in a 8 * somewhat brain-damaged way. 9 * 10 */ 11 char * isa_id_string ( unsigned int vendor, unsigned int product ) { 12 static char buf[7]; 13 int i; 14 15 /* Vendor ID is a compressed ASCII string */ 16 vendor = bswap_16 ( vendor ); 17 for ( i = 2 ; i >= 0 ; i-- ) { 18 buf[i] = ( 'A' - 1 + ( vendor & 0x1f ) ); 19 vendor >>= 5; 20 } 21 22 /* Product ID is a 4-digit hex string */ 23 sprintf ( &buf[3], "%04x", bswap_16 ( product ) ); 24 25 return buf; 26 } 27
