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soc:2008:mdeck:notes:initialization [2008/05/28 16:39] mdeck created |
soc:2008:mdeck:notes:initialization [2008/05/30 04:37] (current) mdeck |
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| ''register_netdev()'' adds to the device list.\\ | ''register_netdev()'' adds to the device list.\\ | ||
| We return up the call stack to main(). | We return up the call stack to main(). | ||
| - | ===== Reaching open ===== | + | ===== Reaching close ===== |
| * src/core/main.c >> ''main()'' | * src/core/main.c >> ''main()'' | ||
| * src/usr/autoboot.c >> ''autoboot()'' -- Boot network devices sequentially. | * src/usr/autoboot.c >> ''autoboot()'' -- Boot network devices sequentially. | ||
| + | * src/usr/autoboot.c >> ''close_all_netdevs()'' | ||
| + | * src/usr/ifmgmt.c >> ''ifclose()'' | ||
| + | * src/net/netdevice.c >> ''netdev_close()'' | ||
| + | * ''%%{struct net_device}->op->close()%%'' == src/drivers/net/NAME.c >> ''NAME_close()'' -- The network driver's ''close()'' routine is reached. | ||
| + | All network devices are closed before attempting to boot each network device.\\ | ||
| + | We return up the call stack to autoboot(). | ||
| + | ===== Reaching open ===== | ||
| + | * src/usr/autoboot.c >> ''autoboot()'' -- Still booting network devices sequentially. | ||
| * src/usr/autoboot.c >> ''netboot()'' -- Boot this network device | * src/usr/autoboot.c >> ''netboot()'' -- Boot this network device | ||
| * src/usr/ifmgmt.c >> ''ifopen()'' | * src/usr/ifmgmt.c >> ''ifopen()'' | ||
| - | * src/net/netdevice.c >> ''netdev_open()'' -- The network driver's ''open()'' routine is reached. | + | * src/net/netdevice.c >> ''netdev_open()'' |
| - | * ''%%{struct net_device}->op->open()%%'' == src/drivers/net/NAME.c >> ''NAME_open()'' | + | * ''%%{struct net_device}->op->open()%%'' == src/drivers/net/NAME.c >> ''NAME_open()'' -- The network driver's ''open()'' routine is reached. |
| At this point transmit and receive are enabled. | At this point transmit and receive are enabled. | ||
| + | |||
| ===== root_device and pci_device structs ===== | ===== root_device and pci_device structs ===== | ||
| Both ''struct root_device'' and ''struct pci_device'' have a special function in gPXE. Bus drivers are ''root_device''s, thus there is one for PCI, ISA, etc. PCI devices are self-explanatory. Both ''root_device'' and ''pci_device'' structs are defined within their respective driver code. These structs hold function pointers to essential interface routines, such as ''probe()'' and ''remove()''. The ''%%__pci_driver%%'' and ''%%__root_driver%%'' tags cause the drivers to be added to a list of modules, resulting in their ''probe()'' routines being called during initialization. | Both ''struct root_device'' and ''struct pci_device'' have a special function in gPXE. Bus drivers are ''root_device''s, thus there is one for PCI, ISA, etc. PCI devices are self-explanatory. Both ''root_device'' and ''pci_device'' structs are defined within their respective driver code. These structs hold function pointers to essential interface routines, such as ''probe()'' and ''remove()''. The ''%%__pci_driver%%'' and ''%%__root_driver%%'' tags cause the drivers to be added to a list of modules, resulting in their ''probe()'' routines being called during initialization. | ||
