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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [sparclite/] [sleb/] [v2_0/] [include/] [hal_clock.h] - Rev 565
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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
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