source: vbox/trunk/src/VBox/Devices/PC/Etherboot-src/include/dev.h@ 16565

#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);

/* Boot option values
 * option & BOOT_TYPE_MASK should equal a driver for probing
 */

#define BOOT_NIC      0x0       /* Boot from a nic */
#define BOOT_DISK     0x1       /* Boot from disk */
#define BOOT_FLOPPY   0x2       /* Boot from a floppy */

#define BOOT_NOTHING  0x3       /* Last valid boot choice */

/* Do magic failsafe boot processing */
#define BOOT_FAILSAFE 0x8

#define BOOT_BITS       4
#define BOOT_MASK      ((1 << (BOOT_BITS)) - 1)
#define BOOT_TYPE_MASK ((1 << (BOOT_BITS - 1)) - 1)

#define MAX_BOOT_ENTRIES 3

#define BOOT_ALL_VALUE  (1<<BOOT_FIRST|1<<BOOT_SECOND|1<<BOOT_THIRD)

/* These could be customised for different languages perhaps */
#if     BOOT_ALL_VALUE&(1<<BOOT_DISK)
#define BOOT_DISK_PROMPT        "(D)isk "
#else
#define BOOT_DISK_PROMPT
#endif

#if     BOOT_ALL_VALUE&(1<<BOOT_FLOPPY)
#define BOOT_FLOPPY_PROMPT      "(F)loppy "
#else
#define BOOT_FLOPPY_PROMPT
#endif

#define ASK_PROMPT      \
        "Boot from (N)etwork " BOOT_DISK_PROMPT BOOT_FLOPPY_PROMPT "or (Q)uit? "

#define ANS_NETWORK     'N'
#define ANS_DISK        'D'
#define ANS_FLOPPY      'F'
#define ANS_QUIT        'Q'
#define ANS_DEFAULT     '\n'

#endif /* DEV_H */