127 lines
2.7 KiB
C
127 lines
2.7 KiB
C
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#ifndef DEV_H
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#define DEV_H
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#include "isa.h"
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#include "pci.h"
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/* Need to check the packing of this struct if Etherboot is ported */
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struct dev_id
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{
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unsigned short vendor_id;
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unsigned short device_id;
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unsigned char bus_type;
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#define PCI_BUS_TYPE 1
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#define ISA_BUS_TYPE 2
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};
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/* Dont use sizeof, that will include the padding */
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#define DEV_ID_SIZE 8
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struct pci_probe_state
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{
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#ifdef CONFIG_PCI
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struct pci_device dev;
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int advance;
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#else
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int dummy;
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#endif
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};
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struct isa_probe_state
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{
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#ifdef CONFIG_ISA
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const struct isa_driver *driver;
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int advance;
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#else
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int dummy;
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#endif
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};
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union probe_state
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{
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struct pci_probe_state pci;
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struct isa_probe_state isa;
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};
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struct dev
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{
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void (*disable)P((struct dev *));
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struct dev_id devid; /* device ID string (sent to DHCP server) */
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int index; /* Index of next device on this controller to probe */
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int type; /* Type of device I am probing for */
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int how_probe; /* First, next or awake */
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int to_probe; /* Flavor of device I am probing */
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int failsafe; /* Failsafe probe requested */
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int type_index; /* Index of this device (within type) */
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#define PROBE_NONE 0
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#define PROBE_PCI 1
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#define PROBE_ISA 2
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union probe_state state;
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};
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#define NIC_DRIVER 0
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#define DISK_DRIVER 1
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#define FLOPPY_DRIVER 2
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#define BRIDGE_DRIVER 1000
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#define PROBE_FIRST (-1)
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#define PROBE_NEXT 0
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#define PROBE_AWAKE 1 /* After calling disable bring up the same device */
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/* The probe result codes are selected
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* to allow them to be fed back into the probe
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* routine and get a successful probe.
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*/
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#define PROBE_FAILED PROBE_FIRST
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#define PROBE_WORKED PROBE_NEXT
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extern int probe(struct dev *dev);
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extern void disable(struct dev *dev);
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/* Boot option values
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* option & BOOT_TYPE_MASK should equal a driver for probing
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*/
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#define BOOT_NIC 0x0 /* Boot from a nic */
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#define BOOT_DISK 0x1 /* Boot from disk */
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#define BOOT_FLOPPY 0x2 /* Boot from a floppy */
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#define BOOT_NOTHING 0x3 /* Last valid boot choice */
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/* Do magic failsafe boot processing */
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#define BOOT_FAILSAFE 0x8
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#define BOOT_BITS 4
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#define BOOT_MASK ((1 << (BOOT_BITS)) - 1)
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#define BOOT_TYPE_MASK ((1 << (BOOT_BITS - 1)) - 1)
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#define MAX_BOOT_ENTRIES 3
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#define BOOT_ALL_VALUE (1<<BOOT_FIRST|1<<BOOT_SECOND|1<<BOOT_THIRD)
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/* These could be customised for different languages perhaps */
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#if BOOT_ALL_VALUE&(1<<BOOT_DISK)
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#define BOOT_DISK_PROMPT "(D)isk "
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#else
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#define BOOT_DISK_PROMPT
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#endif
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#if BOOT_ALL_VALUE&(1<<BOOT_FLOPPY)
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#define BOOT_FLOPPY_PROMPT "(F)loppy "
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#else
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#define BOOT_FLOPPY_PROMPT
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#endif
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#define ASK_PROMPT \
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"Boot from (N)etwork " BOOT_DISK_PROMPT BOOT_FLOPPY_PROMPT "or (Q)uit? "
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#define ANS_NETWORK 'N'
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#define ANS_DISK 'D'
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#define ANS_FLOPPY 'F'
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#define ANS_QUIT 'Q'
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#define ANS_DEFAULT '\n'
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#endif /* DEV_H */
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