source: soft/giet_vm/giet_drivers/rdk_driver.h @ 449

Last change on this file since 449 was 437, checked in by alain, 10 years ago

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

File size: 3.4 KB
RevLine 
[298]1///////////////////////////////////////////////////////////////////////////////////
2// File      : rdk_driver.h
3// Date      : 13/02/2014
4// Author    : alain greiner
5// Copyright (c) UPMC-LIP6
6///////////////////////////////////////////////////////////////////////////////////
[437]7// The rdk_driver.c and rdk_driver.h files are part ot the GIET-VM kernel.
8//
9// This driver supports a virtual disk implemented as a memory segment,
10// in the physical address space.
11//
12// The _rdk_read() and _rdk_write() blocking functions use a software memcpy,
13// whatever the selected mode. They return only when the transfer is completed.
14// As the number of concurrent accesses is not bounded, these functions
15// don't use the _ioc_lock variable.
16//
17// The SEG_RDK_BASE virtual address must be defined in the hard_config.h
18// file when the USE_RAMDISK flag is set.
19///////////////////////////////////////////////////////////////////////////////////
[298]20
21#ifndef _GIET_RDK_DRIVERS_H_
22#define _GIET_RDK_DRIVERS_H_
23
24///////////////////////////////////////////////////////////////////////////////////
25// BDV access functions and variables (vci_block_device)
26///////////////////////////////////////////////////////////////////////////////////
27
[437]28///////////////////////////////////////////////////////////////////////////////
29// This function does nothing, but is required by the IOC API.
30///////////////////////////////////////////////////////////////////////////////
[298]31extern unsigned int _rdk_init();
32
[437]33///////////////////////////////////////////////////////////////////////////////
34// Transfer data from a memory buffer to the RAMDISK.
35// - mode     : BOOT / KERNEL / USER (unused)
36// - lba      : first block index on the block device
37// - buffer   : virtual base address of the memory buffer
38// - count    : number of blocks to be transfered.
39// Returns 0 if success, > 0 if error.
40///////////////////////////////////////////////////////////////////////////////
[298]41extern unsigned int _rdk_write( unsigned int lba, 
42                                unsigned int buffer, 
43                                unsigned int count );
44
[437]45///////////////////////////////////////////////////////////////////////////////
46// Transfer data from the RAMDISK to a memory buffer.
47// - mode     : BOOT / KERNEL / USER (unused)
48// - lba      : first block index on the block device
49// - buffer   : virtual base address of the memory buffer
50// - count    : number of blocks to be transfered.
51// Returns 0 if success, > 0 if error.
52///////////////////////////////////////////////////////////////////////////////
[298]53extern unsigned int _rdk_read(  unsigned int lba, 
54                                unsigned int buffer,
55                                unsigned int count );
56
[437]57///////////////////////////////////////////////////////////////////////////////
58// This function returns the block size.
59///////////////////////////////////////////////////////////////////////////////
[298]60extern unsigned int _rdk_get_block_size();
61
62///////////////////////////////////////////////////////////////////////////////////
[437]63// This function returns always 0, but is required by the IOC API.
64///////////////////////////////////////////////////////////////////////////////
65extern unsigned int _rdk_get_status();
[298]66
67#endif
68
69// Local Variables:
70// tab-width: 4
71// c-basic-offset: 4
72// c-file-offsets:((innamespace . 0)(inline-open . 0))
73// indent-tabs-mode: nil
74// End:
75// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
76
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