iPXE
isa_ids.c
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1 #include <stdint.h>
2 #include <stdio.h>
3 #include <byteswap.h>
4 #include <ipxe/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 }
#define sprintf(buf, fmt,...)
Write a formatted string to a buffer.
Definition: stdio.h:36
char * isa_id_string(unsigned int vendor, unsigned int product)
Definition: isa_ids.c:11
#define bswap_16(value)
Definition: byteswap.h:58
union bootph_vendor vendor
uint8_t product
Product string.
Definition: smbios.h:16