Re: Nokia c110 driver

[Kliment Yanev <Kliment.Yanev@helsinki.fi>]

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Randy.Dunlap wrote:
|
| I looked there but didn't see such symbols (using 'nm').
| What did you use to see them?
| The strings that I see all seem to contain 16-bit characters.

dhw.o, dap.o, dmgr.o and dcfg.o are located in nokia_cs.a, which does
not include source. These are the parts that actually access the card
and configure frequencies etc. They don't seem to be linked, since the
dhw_* symbols are unknown in the module. Manually linking them with the
.ko prevents it from being loaded (or maybe I am linking them wrong).
They are defined in corresponding .h files mostly. I think that should
handle all of them. nm sees the symbols in those .o files and in
nokia_cs.a where they came from, but I haven't checked if all of them
are there (I will do so soon). Note that nokia_cs.a is in the binary
package where the firmware is. It is not the same as the firmware file
(smac*.bin).

I am not at all familiar with kbuild (other than the driver porting
howto) and actually have not even written c code before attempting this
driver. Can you advise me on how to link external files like this into a
.ko without breaking the module?


|
|
| | | You know, it's possible that you could purchase a card that already
| | | works on Linux 2.6.... that might be a better solution than trying
| | | to use an unknown binary module.
|
| Well, Sam Ravnborg did post a patch in the last week or so that
| should help with (some) binary files...  probably .o and not .bin,
| or maybe it doesn't matter.
|

Clarify please. A patch to kbuild? Or to the kernel? Note that the .bin
file is only the card firmware. No point looking in that for anything.
The binary part of the _driver_ is in nokia_cs.a, which contains .o files.

|
| | At this point I am doing this just to see if it will work... I don't
| | need the card for another week or so and if I don't get this one to work
| | I'll just buy another one. Yet I have the feeling that this card will
| | work before long... if only I could get those files linked that is...
| |
| | My makefile (dhw, dap, dmgr and dcfg are in the binary parts, present in
| | the current dir as dhw.o etc.; all the others are .c files that get
| | compiled during a make):
| |
| | ~    ifneq ($(KERNELRELEASE),)
| | ~    obj-m       := nokia_c110.o
| | ~    module-objs := dllc.o dtools.o dhw.o dap.o dmgr.o dcfg.o
| |
| | ~    else
| | ~    KDIR        := /lib/modules/$(shell uname -r)/build
| | ~    PWD         := $(shell pwd)
| |
| | ~    default:
| | ~        $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
| | ~    endif

Can you tell me if the makefile is correct?

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