Changes between Version 3 and Version 4 of pic_driver


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Timestamp:
Mar 12, 2015, 1:05:20 PM (10 years ago)
Author:
alain
Comment:

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  • pic_driver

    v3 v4  
    2424
    2525 === void '''_pic_init'''( unsigned int channel,  unsigned int vaddr,  unsigned int extend ) ===
    26 This function initializes in the PIC component the register containing the XICU target physical address (vaddr + extend) corresponding to a given HWI channel.
     26This function initializes and activates a given channel (i.e. a given external IRQ) in the PIC component. It writes an XCU mailbox physical address in  the IOPIC_ADDR and IOPIC_EST registers, and writes a non-zero value in IOPIC_MASK register.
    2727 * channel : source PIC HWI channel
    28  * vaddr : virtual address of the destination XCU register
     28 * vaddr : address of the destination XCU register
    2929 * extend :  cluster_xy for the destination XCU
    3030