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Separate out bus-scanning and device-probing logic.

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This commit is contained in:
Michael Brown
2005-04-14 13:33:03 +00:00
parent 4c0d5a0b71
commit ce8dea0dff
3 changed files with 62 additions and 12 deletions
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24
src/include/dev.h
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@@ -23,11 +23,12 @@ struct dev {
struct dev_operations *dev_op;
const char *name;
struct dev_id devid; /* device ID string (sent to DHCP server) */
struct boot_driver *driver; /* driver being used for boot */
/* Pointer to bus information for device. Whatever sets up
* the struct dev must make sure that this points to a buffer
* large enough for the required struct <bus>_device.
*/
void *bus;
struct bus_device *bus;
/* All possible device types */
union {
struct nic nic;
@@ -49,20 +50,33 @@ struct dev_operations {
int ( *load ) ( struct dev * );
};
/*
* Table to describe a bootable device driver. See comments in dev.c
* for an explanation.
*
*/
struct bus_device {};
struct bus_driver {};
struct boot_driver {
char *name;
int (*probe) ( struct dev * );
struct bus_device * ( *find_bus_boot_device ) ( struct dev *dev,
struct bus_driver *driver );
struct bus_driver *bus_driver;
int ( *probe ) ( struct dev *dev, struct bus_device *bus_device );
};
#define BOOT_DRIVER( driver_name, probe_func ) \
#define BOOT_DRIVER( _name, _find_bus_boot_device, _bus_driver, _probe ) \
static struct boot_driver boot_driver_ ## probe_func \
__attribute__ ((used,__section__(".boot_drivers"))) = { \
.name = driver_name, \
.probe = probe_func, \
.name = _name, \
.find_bus_boot_device = ( void * ) _find_bus_boot_device, \
.bus_driver = ( void * ) _bus_driver, \
.probe = ( void * ) _probe, \
};
/* Functions in dev.c */
extern void print_drivers ( void );
extern int find_boot_device ( struct dev *dev );
extern int probe ( struct dev *dev );
extern void disable ( struct dev *dev );
static inline void print_info ( struct dev *dev ) {