Changes between Version 11 and Version 12 of io_operations

Timestamp:

Nov 3, 2016, 1:30:37 PM (8 years ago)

Author:

alain

Comment:

--

io_operations

@@ -11 +11 @@
 ALMOS-MK supports two types of peripheral components: 
 
- * '''External peripherals''' are accessed through a bridge located in one single cluster (called ''cluster_io'', identified by the ''io_cxy'' parameter in the arch_info description). They are shared ressources that can be used by any kernel instance, running in any cluster. Examples are the generic IOC device (Block Device Controller), the generic NIC device (Network Interface Controller), the generic TXT device (Text Terminal), the generic FBF device (Frame Buffer for Graphical Display Controller.
+ * '''External peripherals''' are accessed through a bridge located in one single cluster (called ''cluster_io'', identified by the ''io_cxy'' parameter in the arch_info description). They are shared ressources that can be used by any kernel instance, running in any cluster. Examples are the generic IOC device (Block Device Controller), the generic NIC device (Network Interface Controller), the generic TXT device (Text Terminal), the generic FBF device (Frame Buffer for Graphical Display Controller).
 
- * '''Internal peripherals''' are replicated in all clusters. Each internal peripheral is a private resource that can only be used by the kernel instance running in the local cluster. There is very few internal peripherals. examples are the generic ICU device (Interrupt Controller Unit), or the generic MMC (L2 Cache Configuration).
+ * '''Internal peripherals''' are replicated in all clusters. Each internal peripheral is associated to the local kernel instance. There is very few internal peripherals. examples are the generic ICU device (Interrupt Controller Unit), or the generic MMC (L2 Cache Configuration).
 
 ALMOS-MK supports ''multi-channels'' peripherals, where one single peripheral controller contains N channels that can run in parallel. Each channel has a separated set of addressable registers, and each channel can be used by the OS as an independent device. Examples are the  TXT peripheral (one channel per text terminal), or the NIC peripheral (one channel per MAC interface).