xref: /onnv-gate/usr/src/grub/grub-0.97/netboot/dev.h (revision 8044:b3af80bbf173)

#ifndef _DEV_H
#define _DEV_H

#include "isa.h"
#include "pci.h"

/* Need to check the packing of this struct if Etherboot is ported */
struct dev_id
{
	unsigned short	vendor_id;
	unsigned short	device_id;
	unsigned char	bus_type;
#define	PCI_BUS_TYPE	1
#define	ISA_BUS_TYPE	2
};

/* Dont use sizeof, that will include the padding */
#define	DEV_ID_SIZE	8


struct pci_probe_state
{
#ifdef CONFIG_PCI
	struct pci_device dev;
	int advance;
#else
	int dummy;
#endif
};
struct isa_probe_state
{
#ifdef CONFIG_ISA
	const struct isa_driver *driver;
	int advance;
#else
	int dummy;
#endif
};

union probe_state
{
	struct pci_probe_state pci;
	struct isa_probe_state isa;
};

struct dev
{
	void		(*disable)P((struct dev *));
	struct dev_id	devid;	/* device ID string (sent to DHCP server) */
	int		index;  /* Index of next device on this controller to probe */
	int		type;		/* Type of device I am probing for */
	int		how_probe;	/* First, next or awake */
	int 		to_probe;	/* Flavor of device I am probing */
	int		failsafe;	/* Failsafe probe requested */
	int		type_index;	/* Index of this device (within type) */
#define	PROBE_NONE 0
#define PROBE_PCI  1
#define PROBE_ISA  2
	union probe_state state;
};


#define NIC_DRIVER    0
#define DISK_DRIVER   1
#define FLOPPY_DRIVER 2

#define BRIDGE_DRIVER 1000

#define PROBE_FIRST  (-1)
#define PROBE_NEXT   0
#define PROBE_AWAKE  1		/* After calling disable bring up the same device */

/* The probe result codes are selected
 * to allow them to be fed back into the probe
 * routine and get a successful probe.
 */
#define PROBE_FAILED PROBE_FIRST
#define PROBE_WORKED  PROBE_NEXT

extern int probe(struct dev *dev);
extern void disable(struct dev *dev);

#endif /* _DEV_H */