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.

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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)
 }

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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.