usr/src/grub/grub-0.97/netboot/dev.h

   1 #ifndef _DEV_H
   2 #define _DEV_H
   3
   4 #include "isa.h"
   5 #include "pci.h"
   6
   7 /* Need to check the packing of this struct if Etherboot is ported */
   8 struct dev_id
   9 {
  10         unsigned short  vendor_id;
  11         unsigned short  device_id;
  12         unsigned char   bus_type;
  13 #define PCI_BUS_TYPE    1
  14 #define ISA_BUS_TYPE    2
  15 };
  16
  17 /* Dont use sizeof, that will include the padding */
  18 #define DEV_ID_SIZE     8
  19
  20
  21 struct pci_probe_state
  22 {
  23 #ifdef CONFIG_PCI
  24         struct pci_device dev;
  25         int advance;
  26 #else
  27         int dummy;
  28 #endif
  29 };
  30 struct isa_probe_state
  31 {
  32 #ifdef CONFIG_ISA
  33         const struct isa_driver *driver;
  34         int advance;
  35 #else
  36         int dummy;
  37 #endif
  38 };
  39
  40 union probe_state
  41 {
  42         struct pci_probe_state pci;
  43         struct isa_probe_state isa;
  44 };
  45
  46 struct dev
  47 {
  48         void            (*disable)P((struct dev *));
  49         struct dev_id   devid;  /* device ID string (sent to DHCP server) */
  50         int             index;  /* Index of next device on this controller to probe */
  51         int             type;           /* Type of device I am probing for */
  52         int             how_probe;      /* First, next or awake */
  53         int             to_probe;       /* Flavor of device I am probing */
  54         int             failsafe;       /* Failsafe probe requested */
  55         int             type_index;     /* Index of this device (within type) */
  56 #define PROBE_NONE 0
  57 #define PROBE_PCI  1
  58 #define PROBE_ISA  2
  59         union probe_state state;
  60 };
  61
  62
  63 #define NIC_DRIVER    0
  64 #define DISK_DRIVER   1
  65 #define FLOPPY_DRIVER 2
  66
  67 #define BRIDGE_DRIVER 1000
  68
  69 #define PROBE_FIRST  (-1)
  70 #define PROBE_NEXT   0
  71 #define PROBE_AWAKE  1          /* After calling disable bring up the same device */
  72
  73 /* The probe result codes are selected
  74  * to allow them to be fed back into the probe
  75  * routine and get a successful probe.
  76  */
  77 #define PROBE_FAILED PROBE_FIRST
  78 #define PROBE_WORKED  PROBE_NEXT
  79
  80 extern int probe(struct dev *dev);
  81 extern void disable(struct dev *dev);
  82
  83 #endif /* _DEV_H */