usb build error! help me :)

Question

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif today i setup uclinux1.2 again,and modified kconfig files. but when i build the kernel ,here were so much errors :

Error drivers/built-in.o * In function `usb_buffer_map': undefined reference to `dma_map_single

Error drivers/built-in.o * In function `usb_buffer_unmap_sg': undefined reference to `dma_unmap_sg'

Error drivers/built-in.o * In function `usb_buffer_unmap': undefined reference to `dma_unmap_single'

Error drivers/built-in.o * In function `usb_hcd_giveback_urb': undefined reference to `dma_unmap_single'

Error drivers/built-in.o * In function `usb_sg_init': undefined reference to `sg_dma_address'

Error drivers/built-in.o * undefined reference to `dma_map_single' undefined reference to `dma_map_single'

Error drivers/built-in.o * undefined reference to `dma_unmap_single' undefined reference to `dma_unmap_single'

Error drivers/built-in.o * undefined reference to `sg_dma_address' undefined reference to `sg_dma_len'

Warning implicit declaration of CC drivers/usb/core/hub.o[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/usb.c]

Warning implicit declaration of function `dma_map_single'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/hcd.c]

Warning implicit declaration of function `dma_map_single'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/usb.c]

Warning implicit declaration of function `dma_unmap_sg'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/usb.c]

Warning implicit declaration of function `dma_unmap_single'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/hcd.c]

Warning implicit declaration of function `dma_unmap_single'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/usb.c]

Warning implicit declaration of function `sg_dma_address'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/message.c]

Warning implicit declaration of function `sg_dma_len'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/core/message.c]

Warning implicit declaration of function `usb_put_bus'[/cygdrive/d/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux.kernel_0.1.5/linux-2.6.x/drivers/usb/host/hc_sl811.c]

altera_forum · Answer

i had tried the whole day,but....http://forum.niosforum.com/work2/style_emoticons/&lt;#EMO_DIR#&gt;/sad.gif

altera_forum · Answer

i changed  &lt;*&gt;USB support to &lt;M&gt;USB support. so its ok.   i typed "mount -n nodev -t procfs /proc/bus/usb"in sdk shell. here was an error: mount : mount point /proc/bus/usb does not exist. and the folder /proc/bus was empty. why?

altera_forum · Answer

(1) This is not a supported driver, and it's known to not work in 2.6.9. You should stop trying to use it and use the sl811-hcd driver from 2.6.10 following the instructions provided in a previous thread.

(2) it doesn't do you any good to get around symbol not found errors by compiling something as a module, since the symbols will simply not be found once you try to load the module.

(3) You can't mount the usb filesystem until the driver is in place to provide it. It must either be compiled in or if you load it as a module you have to actually load the module first (see# 2 since that won't work with this driver).

So, in summary, if you want to do less work, switch to the sl811-hcd driver from 2.6.10 and follow the guidelines given to get it to work. If you want the fun of implementing the missing functions from dma-mapping.h and who knows what other kernel headers/files, go ahead, but when I asked around there was no indication that anyone ever got that working, though wentao was apparently close.

Porting the sl811-hcd driver from 2.6.10 is pretty quick and faily easy if you follow the instructions I gave in a previous thread.

altera_forum · Answer

thank for your help http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

i copied sl811-hcd.c etc from 2.6.10 to my uclinux. and build the kernel.but there is sl811-hcd.o.d but not sl811-hcd.o in usb folder. why?

and when i select<*>usb support ,here were so much error about dma. i use sl811hs in host mode,and donnot need to use DMA. how to cancel it ??

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

altera_forum · Answer

When you copied over the driver, did you modify the Kconfig and Makefile so as to only build the new sl811-hcd driver? The old one will complain about the dma functions which aren't present, but if you don't try to compile the old one at all, no problems. :-)

As for building sl811-hcd.o.d, I have no idea. Try posting the relevant portion of your modified Kconfig and Makefile files.

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usb build error! help me :)

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