Changes between Version 57 and Version 58 of io_operations

Timestamp:

Jan 20, 2020, 5:02:12 PM (5 years ago)

Author:

alain

Comment:

--

io_operations

@@ -23 +23 @@
 To represent the peripherals, ALMOS-MKH uses device descriptors  (implemented by the ''chdev_t'' structure). For multi-channels peripherals, ALMOS-MKH defines one ''chdev'' per channel.  This descriptor contains the functional index, the implementation index, the channel index, and the physical base address of the segment containing the addressable registers for this peripheral channel. It contains also the root of a waiting queue of pending commands registered by the various client threads. 
 
-The generic ''chdev'' API is defined in the [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.h  almos-mkh/kernel/kern/chdev.h] and [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.c  almos-mkh/kernel/kern/chdev.c] files.
+The generic ''chdev'' API is defined in the [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.h  chdev.h] and [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/chdev.c chdev.c] files.
 
 For each functional type, the device specific API defines the list of available commands, and the specific structure defining the command descriptor (containing the command type and arguments). As an IO operation is blocking for the calling thread, a client thread can only post one command at a given time. This command is registered in the client thread descriptor, to be passed to the hardware specific driver.