Date: Mon, 12 Aug 2002 17:49:46 +0800 From: "ouyang kai" <oykai@msn.com> To: "Lambert Terry" <tlambert2@mindspring.com>, <freebsd-hackers@FreeBSD.ORG> Subject: Re: Hi, how the kernel add the devices Message-ID: <OE72Z90yzrGqmSyfj3u0001ff04@hotmail.com>
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Dear Terry
>See /usr/src/sys/kernel.h. It is done using linker sets and
>SYSINIT.
Hmm¡. Thank you!
I find the mi_startup() function in /sys/kern/init_main.c, there are some code as follow:
for (sipp = sysinit; sipp < sysinit_end; sipp++) {
if ((*sipp)->subsystem == SI_SUB_DUMMY)
continue; /* skip dummy task(s)*/
if ((*sipp)->subsystem == SI_SUB_DONE)
continue;
/* Call function */
(*((*sipp)->func))((*sipp)->udata);
/* Check off the one we're just done */
(*sipp)->subsystem = SI_SUB_DONE;
/* Check if we've installed more sysinit items via KLD */
if (newsysinit != NULL) {
if (sysinit != SET_BEGIN(sysinit_set))
free(sysinit, M_TEMP);
sysinit = newsysinit;
sysinit_end = newsysinit_end;
newsysinit = NULL;
newsysinit_end = NULL;
goto restart;
}
}
Now, I am puzzled about the function pointer(func), which is how to work.
For example, I have a NIC ¡®fxp0¡¯, so the function pointer should point to the fxp_attach?
Best Regards
Ouyang Kai
If that is right, I want to know how the kernel call the mi_startup()?
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