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Altera_Forum
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16 years ago

How to finish the altpciechdma.c driver?

I've downloaded the altpciechdma.c driver for the Altera Arria GX dev kit. The char part of it is not yet finished (due to the comments). And a module is missign "mapper_user_to_sg.h". Smb has...
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Altera_Forum
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15 years ago

Thanks for the reply!

I get this kind of errors when commenting the include file:

error: dereferencing pointer to incomplete type

error: implicit declaration of function ‘sg_create_mapper’

error: implicit declaration of function ‘sg_destroy_mapper’

error: implicit declaration of function ‘sgm_map_user_pages’

error: implicit declaration of function ‘sgm_unmap_user_pages’

error: variable ‘sg_fops’ has initializer but incomplete type

error: unknown field ‘owner’ specified in initializer

error: unknown field ‘open’ specified in initializer

error: unknown field ‘release’ specified in initializer

error: unknown field ‘write’ specified in initializer

error: implicit declaration of function ‘alloc_chrdev_region’

error: implicit declaration of function ‘unregister_chrdev_region’

After further googling I found this code: svn.assembla.com/svn/altpciechdma/user_dma_sg.c

It has some of the missing functions in it. With some approximate copy/pasting I can get the driver to compile and the char device functionalities to (apparently) work.

Thank you :).