Changes between Version 10 and Version 11 of cma_driver


Ignore:
Timestamp:
Nov 11, 2014, 1:21:25 PM (11 years ago)
Author:
alain
Comment:

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  • cma_driver

    v10 v11  
    4242
    4343 === __void '''_cma_isr'''( unsigned int irq_type,  unsigned int irq_id,  unsigned int channel )__ ===
    44 This Interrupt Service Routine handles the IRQ generated by a CMA channel.
     44A CMA IRQ is activated in case of memory access error for a specific CMA channel:
     45 * SRC_DESC_ERROR : error accessing source chbuf descriptor
     46 * SRC_DATA_ERROR : error accessing source data buffer
     47 * DST_DESC_ERROR : error accessing destination chbuf descriptor
     48 * DST_DATA_ERROR : error accessing destination data buffer
     49The Interrupt Service Routine displays a message on TTY0 and desactivates the CMA channel to acknowledge IRQ.
    4550
     51