Changes between Version 7 and Version 8 of cma_driver


Ignore:
Timestamp:
Oct 29, 2014, 3:16:43 PM (10 years ago)
Author:
alain
Comment:

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  • cma_driver

    v7 v8  
    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 transfers continuously data from an ''infinite'' stream of buffers (source ''chbuf'') to another infinite stream of buffers (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.