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#ifndef CYGONCE_HAL_CLOCK_H
#define CYGONCE_HAL_CLOCK_H
 
//=============================================================================
//
//      hal_clock.h
//
//      HAL clock support
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg, gthomas, hmt
// Contributors:        nickg, gthomas, hmt
// Date:        1999-01-28
// Purpose:     Define clock support
// Description: The macros defined here provide the HAL APIs for handling
//              the clock.
//              
// Usage:
//              #include <cyg/hal/hal_intr.h> // which includes this file
//              ...
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================
 
// #include <cyg/hal/hal_io.h>
 
#include <cyg/hal/hal_hwio.h> // HAL_SPARC_86940_READ/WRITE
 
//-----------------------------------------------------------------------------
// Clock control
 
 
// The vector used by the Real time clock is defined in hal_xpic.h
 
extern cyg_int32 cyg_hal_sparclite_clock_period;
 
//-----------------------------------------------------------------------------
 
#define HAL_SPARC_86940_REG_TIMER1_PRESCALER ( 0x14 * 4 )
#define HAL_SPARC_86940_REG_TIMER1_CONTROL   ( 0x15 * 4 )
#define HAL_SPARC_86940_REG_TIMER1_RELOAD    ( 0x16 * 4 )
#define HAL_SPARC_86940_REG_TIMER1_COUNT     ( 0x17 * 4 )
 
 
 
#define HAL_SPARC_86940_TIMER1_PRESCALER_WRITE( v ) \
            HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_PRESCALER, v )
 
#define HAL_SPARC_86940_TIMER1_PRESCALER_READ( r ) \
            HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_PRESCALER, r )
 
#define HAL_SPARC_86940_TIMER1_CONTROL_WRITE( v ) \
            HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_CONTROL, v )
 
#define HAL_SPARC_86940_TIMER1_CONTROL_READ( r ) \
            HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_CONTROL, r )
 
#define HAL_SPARC_86940_TIMER1_RELOAD_WRITE( v ) \
            HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_RELOAD, v )
 
#define HAL_SPARC_86940_TIMER1_RELOAD_READ( r ) \
            HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_RELOAD, r )
 
#define HAL_SPARC_86940_TIMER1_COUNT_READ( r ) \
            HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_COUNT, r )
 
//-----------------------------------------------------------------------------
 
// Initialize the clock to 1MHz whatever the system clock speed.  This
// requires calculation...
 
externC void hal_clock_initialize( cyg_uint32 p );
#define HAL_CLOCK_INITIALIZE( _period_ ) hal_clock_initialize( _period_ )
 
// This is the easiest way to clear the interrupt.
#define HAL_CLOCK_RESET( _vector_, _period_ ) CYG_MACRO_START            \
  cyg_uint32 _scratch_;                                                  \
  HAL_SPARC_86940_TIMER1_COUNT_READ( _scratch_ );                        \
CYG_MACRO_END
 
#define HAL_CLOCK_READ( _pvalue_ ) CYG_MACRO_START                       \
  cyg_uint32 _read_;                                                     \
  HAL_SPARC_86940_TIMER1_COUNT_READ( _read_ );                           \
  *((cyg_uint32 *)(_pvalue_)) = cyg_hal_sparclite_clock_period - _read_; \
CYG_MACRO_END
 
#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY
#define HAL_CLOCK_LATENCY( _pvalue_ )         HAL_CLOCK_READ( _pvalue_ )
#endif
 
//-----------------------------------------------------------------------------
 
#endif // ifndef CYGONCE_HAL_CLOCK_H
// End of hal_clock.h

Line No.	Rev	Author	Line
1	27	unneback	`#ifndef CYGONCE_HAL_CLOCK_H`
2			`#define CYGONCE_HAL_CLOCK_H`
3
4			`//=============================================================================`
5			`//`
6			`// hal_clock.h`
7			`//`
8			`// HAL clock support`
9			`//`
10			`//=============================================================================`
11			`//####ECOSGPLCOPYRIGHTBEGIN####`
12			`// -------------------------------------------`
13			`// This file is part of eCos, the Embedded Configurable Operating System.`
14			`// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.`
15			`//`
16			`// eCos is free software; you can redistribute it and/or modify it under`
17			`// the terms of the GNU General Public License as published by the Free`
18			`// Software Foundation; either version 2 or (at your option) any later version.`
19			`//`
20			`// eCos is distributed in the hope that it will be useful, but WITHOUT ANY`
21			`// WARRANTY; without even the implied warranty of MERCHANTABILITY or`
22			`// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License`
23			`// for more details.`
24			`//`
25			`// You should have received a copy of the GNU General Public License along`
26			`// with eCos; if not, write to the Free Software Foundation, Inc.,`
27			`// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.`
28			`//`
29			`// As a special exception, if other files instantiate templates or use macros`
30			`// or inline functions from this file, or you compile this file and link it`
31			`// with other works to produce a work based on this file, this file does not`
32			`// by itself cause the resulting work to be covered by the GNU General Public`
33			`// License. However the source code for this file must still be made available`
34			`// in accordance with section (3) of the GNU General Public License.`
35			`//`
36			`// This exception does not invalidate any other reasons why a work based on`
37			`// this file might be covered by the GNU General Public License.`
38			`//`
39			`// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.`
40			`// at http://sources.redhat.com/ecos/ecos-license/`
41			`// -------------------------------------------`
42			`//####ECOSGPLCOPYRIGHTEND####`
43			`//=============================================================================`
44			`//#####DESCRIPTIONBEGIN####`
45			`//`
46			`// Author(s): nickg, gthomas, hmt`
47			`// Contributors: nickg, gthomas, hmt`
48			`// Date: 1999-01-28`
49			`// Purpose: Define clock support`
50			`// Description: The macros defined here provide the HAL APIs for handling`
51			`// the clock.`
52			`//`
53			`// Usage:`
54			`// #include <cyg/hal/hal_intr.h> // which includes this file`
55			`// ...`
56			`//`
57			`//`
58			`//####DESCRIPTIONEND####`
59			`//`
60			`//=============================================================================`
61
62			`// #include <cyg/hal/hal_io.h>`
63
64			`#include <cyg/hal/hal_hwio.h> // HAL_SPARC_86940_READ/WRITE`
65
66			`//-----------------------------------------------------------------------------`
67			`// Clock control`
68
69
70			`// The vector used by the Real time clock is defined in hal_xpic.h`
71
72			`extern cyg_int32 cyg_hal_sparclite_clock_period;`
73
74			`//-----------------------------------------------------------------------------`
75
76			`#define HAL_SPARC_86940_REG_TIMER1_PRESCALER ( 0x14 * 4 )`
77			`#define HAL_SPARC_86940_REG_TIMER1_CONTROL ( 0x15 * 4 )`
78			`#define HAL_SPARC_86940_REG_TIMER1_RELOAD ( 0x16 * 4 )`
79			`#define HAL_SPARC_86940_REG_TIMER1_COUNT ( 0x17 * 4 )`
80
81
82
83			`#define HAL_SPARC_86940_TIMER1_PRESCALER_WRITE( v ) \`
84			`HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_PRESCALER, v )`
85
86			`#define HAL_SPARC_86940_TIMER1_PRESCALER_READ( r ) \`
87			`HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_PRESCALER, r )`
88
89			`#define HAL_SPARC_86940_TIMER1_CONTROL_WRITE( v ) \`
90			`HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_CONTROL, v )`
91
92			`#define HAL_SPARC_86940_TIMER1_CONTROL_READ( r ) \`
93			`HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_CONTROL, r )`
94
95			`#define HAL_SPARC_86940_TIMER1_RELOAD_WRITE( v ) \`
96			`HAL_SPARC_86940_WRITE( HAL_SPARC_86940_REG_TIMER1_RELOAD, v )`
97
98			`#define HAL_SPARC_86940_TIMER1_RELOAD_READ( r ) \`
99			`HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_RELOAD, r )`
100
101			`#define HAL_SPARC_86940_TIMER1_COUNT_READ( r ) \`
102			`HAL_SPARC_86940_READ( HAL_SPARC_86940_REG_TIMER1_COUNT, r )`
103
104			`//-----------------------------------------------------------------------------`
105
106			`// Initialize the clock to 1MHz whatever the system clock speed. This`
107			`// requires calculation...`
108
109			`externC void hal_clock_initialize( cyg_uint32 p );`
110			`#define HAL_CLOCK_INITIALIZE( _period_ ) hal_clock_initialize( _period_ )`
111
112			`// This is the easiest way to clear the interrupt.`
113			`#define HAL_CLOCK_RESET( _vector_, _period_ ) CYG_MACRO_START \`
114			`cyg_uint32 _scratch_; \`
115			`HAL_SPARC_86940_TIMER1_COUNT_READ( _scratch_ ); \`
116			`CYG_MACRO_END`
117
118			`#define HAL_CLOCK_READ( _pvalue_ ) CYG_MACRO_START \`
119			`cyg_uint32 _read_; \`
120			`HAL_SPARC_86940_TIMER1_COUNT_READ( _read_ ); \`
121			`((cyg_uint32 )(_pvalue_)) = cyg_hal_sparclite_clock_period - _read_; \`
122			`CYG_MACRO_END`
123
124			`#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY`
125			`#define HAL_CLOCK_LATENCY( _pvalue_ ) HAL_CLOCK_READ( _pvalue_ )`
126			`#endif`
127
128			`//-----------------------------------------------------------------------------`
129
130			`#endif // ifndef CYGONCE_HAL_CLOCK_H`
131			`// End of hal_clock.h`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [sparclite/] [sleb/] [v2_0/] [include/] [hal_clock.h] - Blame information for rev 454