Changes between Version 7 and Version 8 of mwr_driver

Timestamp:

Feb 28, 2015, 11:20:00 PM (10 years ago)

Author:

alain

Comment:

--

mwr_driver

@@ -15 +15 @@
  * in '''DMA''' mode the channel FSM transfer a fixed size chunk of data to or from a memory buffer, with an optional completion signaling interrupt.
 
-It is an ''internal'' peripheral, that can be replicated in all clusters. 
+It is an ''internal'' peripheral, that can be replicated in all clusters. Each cluster can contain at most one coprocessor.
 
+This component contains both global registers an channel registers.
 The addressable registers map and command codes are defined [source:soft/giet_vm/giet_drivers/mwr_driver.h here].
+
+ == Global Registers access functions ==
+
+ === unsigned int '''_mwr_get_type'''( unsigned int cluster_xy ) ===
+This function returns the coprocessor type in cluster[x,y].
+
+ === unsigned int '''_mwr_get_info'''( unsigned int cluster_xy ) ===
+This function returns in a 32 bits word the relevant informations  for the coprocessor in cluster[x,y]:
+ * data[7:0] : number of TO_COPROC channels
+ * data[15:8] : number of FROM_COPROC channels
+ * data[23:16] : number of coprocessor specific configuration registers
+ * data[31:24] : number of coprocessor specific status registers
+
+ == Channel Registers access functions == 
 
  === void '''_mwr_channel_init'''( unsigned int cluster_xy, unsigned int channel, unsigned int mode, unsigned long long buffer_paddr, unsigned int buffer_size, unsigned long long desc_paddr, unsigned long long lock_paddr ) ===