Changeset 437 for soft/giet_vm/giet_drivers/cma_driver.h

Timestamp:

Nov 3, 2014, 10:53:00 AM (10 years ago)

Author:

alain

Message:

Introducing dynamic allocation of peripheral channel(TTY, NIC, TIM, CMA)
Removint the ICU driver : ICU component not supported anymore.
Removing the FBF driver.

File:

• soft/giet_vm/giet_drivers/cma_driver.h (modified) (3 diffs)

soft/giet_vm/giet_drivers/cma_driver.h

@@ -5 +5 @@
 // Copyright (c) UPMC-LIP6
 ///////////////////////////////////////////////////////////////////////////////////
+// The cma_driver.c and cma_driver.h files are part ot the GIET-VM kernel.
+// This driver supports the SocLib vci_chbuf_dma component, that is
+// a multi channels, chained buffer DMA controller.
+//
+// This component can be used in conjonction with the SocLib vci_frame_buffer 
+// to display images, or with the SocLib vci_multi_nic controller to tranfer
+// RX or TX packets between NIC and memory buffers.
+//
+// The SEG_CMA_BASE address must be defined in the hard_config.h file
+//
+// All accesses to CMA registers are done by the two _cma_set_register() 
+// and _cma_get_register() low-level functions, that are handling virtual 
+// to physical extended addressing.
+//
+// The higher level access functions are defined in the fbf_driver 
+// and nic_driver files.
+///////////////////////////////////////////////////////////////////////////////////
 
 #ifndef _GIET_CMA_DRIVERS_H_
@@ -10 +27 @@
 
 ///////////////////////////////////////////////////////////////////////////////////
-// CMA (vci_chbuf_dma) registers offsets
+//  registers offsets
 ///////////////////////////////////////////////////////////////////////////////////
 
@@ -30 +47 @@
 
 ///////////////////////////////////////////////////////////////////////////////////
-// CMA (vci_chbuf_dma) low-level access functions
+//    access functions
 ///////////////////////////////////////////////////////////////////////////////////
 
+////////////////////////////////////////////////////////////
 extern unsigned int _cma_get_register( unsigned int channel,
                                        unsigned int index );
 
+///////////////////////////////////////////////////
 extern void _cma_set_register( unsigned int channel,
                                unsigned int index,
                                unsigned int value );
 
+///////////////////////////////////////////////////
+void _cma_start_channel( unsigned int       channel,
+                         unsigned long long src_paddr,
+                         unsigned int       src_nbufs,
+                         unsigned long long dst_paddr,
+                         unsigned int       dst_nbufs,
+                         unsigned int       buf_length );
+
+//////////////////////////////////////////////
+void _cma_stop_channel( unsigned int channel );
+
+////////////////////////////////////////////
 extern void _cma_isr( unsigned int irq_type,
                       unsigned int irq_id,
                       unsigned int channel );
-
-///////////////////////////////////////////////////////////////////////////////////
 
 #endif