Date: Wed, 19 Oct 2005 21:03:57 -0500 From: "Yong Ma" <mayong@mail.com> To: "John Baldwin" <jhb@freebsd.org> Cc: freebsd-drivers@freebsd.org Subject: Re: Some Questions Message-ID: <20051020020357.C0CE31CE304@ws1-6.us4.outblaze.com>
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John Baldwin wrote:
> Do any processes have /dev/mypci0 open when you try to kldunload? You
> probably should maintain a count of open clients and if it is > 0, return
> EBUSY in my_pcidetach().
>
I have met another question(seems I have so many to ask!):
I have to translate the function pci_resource_start() in the original Linux driver,and I use following method:
(reference:http://lists.freebsd.org/pipermail/freebsd-hackers/2005-April/011724.html)
183 int rid = 0x10;
184 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
185 printf("resource alloc successfully!\n");
186 sc->bst = rman_get_btag(res);
187 sc->bsh = rman_get_handle(res); // to pci_resource_start()
An error occurred when I make it:
test.c: In function `mypci_attach':
test.c:186: warning: implicit declaration of function `rman_get_btag'
test.c:186: warning: nested extern declaration of `rman_get_btag'
test.c:187: warning: implicit declaration of function `rman_get_handle'
test.c:187: warning: nested extern declaration of `rman_get_handle'
and
[root] #kldload -v ./test.ko
kldload: can't load ./test.ko: No such file or directory
(but the test.ko was just there!)
Delete the last two lines and it will be complied and loaded successfully,but I have to keep these two lines.I don't know what to do,tell me please!
btw:I had #include <sys/rman.h> in the file.
Thanks and best regards
Yong
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