Id macros

Macros to handle device and vendor ids. More...

Defines

#define TAG_PCI   1
 PCI ids.
#define TAG_EISA   2
 EISA ids (monitors, ISA-PnP, modems, mice etc).
#define TAG_USB   3
 USB ids.
#define TAG_SPECIAL   4
 Internally used ids.
#define TAG_PCMCIA   5
 PCMCIA ids.
#define ID_VALUE(id)   ((id) & 0xffff)
 Get the real id value.
#define ID_TAG(id)   (((id) >> 16) & 0xf)
 Get the tag value.
#define MAKE_ID(tag, id_val)   ((tag << 16) | (id_val))
 Combine tag and id value.

Detailed Description

Macros to handle device and vendor ids.

Example: to check if an id is a pci id and get its value, do something like this:

 if(ID_TAG(hd->dev) == TAG_PCI) {
   pci_id = ID_VALUE(hd->dev)
 }

Define Documentation

#define ID_TAG id   )     (((id) >> 16) & 0xf)
 

Get the tag value.

#define ID_VALUE id   )     ((id) & 0xffff)
 

Get the real id value.

#define MAKE_ID tag,
id_val   )     ((tag << 16) | (id_val))
 

Combine tag and id value.

#define TAG_EISA   2
 

EISA ids (monitors, ISA-PnP, modems, mice etc).

#define TAG_PCI   1
 

PCI ids.

#define TAG_PCMCIA   5
 

PCMCIA ids.

#define TAG_SPECIAL   4
 

Internally used ids.

#define TAG_USB   3
 

USB ids.