Changes between Version 6 and Version 7 of cma_driver


Ignore:
Timestamp:
Oct 29, 2014, 12:34:50 PM (10 years ago)
Author:
alain
Comment:

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  • cma_driver

    v6 v7  
    88This component can be used in conjonction with the SOCLIB ''vci_frame_buffer'' to display images, or with the SOCLIB ''vci_multi_nic'' controller to transfer  RX or TX packets between NIC buffers and memory buffers.
    99
    10 A single CMA channel transfer an ''infinite'' stream of buffers from a source ''chbuf'' to a destination ''chbuf''.
     10A single CMA channel transfers continuously data from an ''infinite'' stream of buffers (source ''chbuf'') to another infinite stream of buffers (destination ''chbuf'').
    1111A ''chbuf'' descriptor is a variable size circular array of 64 bits entries. Each entry is a single buffer descriptor, and
    1212contains a 48 bits physical address (PADDR) and a valid bit V that is 0 when the buffer is empty.