•External and forward declarations (Section 1.2.1)
•Declaration of softc and controller data structure arrays (Section 1.2.2)
•Declaration of the driver data structure (Section 1.2.3)
•Definitions of
The following sections discuss each of these categories of declarations, using the if_el device driver as an example.
The declarations section also contains the definition of the softc data structure and declarations for
1.2.1 External and Forward Declarations
The following code shows the external and forward declarations for the if_el device driver:
int el_configure(cfg_op_t, cfg_attr_t *, size_t, cfg_attr_t *, size_t);
static int | el_probe (io_handle_t, struct controller *); | 2 |
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static int | el_attach(struct controller *); | |||||||
static int | el_unattach(struct bus *, struct controller *); | |||||||
static int | el_init_locked(struct el_softc *, struct ifnet *, int); | |||||||
static int | el_init(int); |
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static void | el_start_locked(struct el_softc *, struct ifnet *); | |||||||
static void | el_start(struct ifnet *); | |||||||
static int | el_watch(int); |
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static void | el_reset_locked(struct el_softc *, struct ifnet *, int); | |||||||
static void | el_reset(int); |
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static int | el_ioctl(struct ifnet *, u_int, caddr_t); | |||||||
static int | el_intr(int); |
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static void | el_rint(struct el_softc *, struct ifnet *); | |||||||
static void | el_tint(struct el_softc *, struct ifnet *); | |||||||
static void | el_error(struct el_softc *, struct ifnet *); | |||||||
static void | el_shutdown(struct el_softc *); | |||||||
static void | el_card_remove(int, struct el_softc *); | |||||||
static int | el_isa_reset_all(io_handle_t, int *, struct controller *); | |||||||
static int | el_isa_activate(io_handle_t, int *, struct controller *); | |||||||
static unsigned short el_isa_read_offset(io_handle_t, int); | ||||||||
static void | el_wait(struct el_softc *); | |||||||
static void | el_autosense_thread(struct el_softc *); | |||||||
static int | el_card_out(struct el_softc *); | |||||||
extern struct timeval time; |
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extern task_t first_task; |
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Declares the function prototype definitions for all exported functions.
Declares the driver interfaces for the if_el device driver.
Declares the external timeval data structure called time. Various ioctl commands use this data structure.
Network Device Driver Environment
