diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/drivers/bus/isa_ids.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/bus/isa_ids.c')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/bus/isa_ids.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/drivers/bus/isa_ids.c b/qemu/roms/ipxe/src/drivers/bus/isa_ids.c new file mode 100644 index 000000000..e72b233f3 --- /dev/null +++ b/qemu/roms/ipxe/src/drivers/bus/isa_ids.c @@ -0,0 +1,26 @@ +#include <stdint.h> +#include <stdio.h> +#include <byteswap.h> +#include <ipxe/isa_ids.h> + +/* + * EISA and ISAPnP IDs are actually mildly human readable, though in a + * somewhat brain-damaged way. + * + */ +char * isa_id_string ( unsigned int vendor, unsigned int product ) { + static char buf[7]; + int i; + + /* Vendor ID is a compressed ASCII string */ + vendor = bswap_16 ( vendor ); + for ( i = 2 ; i >= 0 ; i-- ) { + buf[i] = ( 'A' - 1 + ( vendor & 0x1f ) ); + vendor >>= 5; + } + + /* Product ID is a 4-digit hex string */ + sprintf ( &buf[3], "%04x", bswap_16 ( product ) ); + + return buf; +} |