Changes between Version 3 and Version 4 of pic_driver

Timestamp:

Mar 12, 2015, 1:05:20 PM (10 years ago)

Author:

alain

Comment:

--

pic_driver

@@ -24 +24 @@
 
  === void '''_pic_init'''( unsigned int channel,  unsigned int vaddr,  unsigned int extend ) ===
-This function initializes in the PIC component the register containing the XICU target physical address (vaddr + extend) corresponding to a given HWI channel.
+This 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.
  * channel : source PIC HWI channel
- * vaddr : virtual address of the destination XCU register
+ * vaddr :  address of the destination XCU register
  * extend :  cluster_xy for the destination XCU