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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [score/] [cpu/] [c4x/] [c4xio.h] - Rev 1765
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/* * C4X IO Information * * c4xio.h,v 1.2 2000/03/01 18:08:53 joel Exp */ #ifndef __C4XIO_h #define __C4XIO_h /* * Address defines */ #ifdef _TMS320C40 #define C4X_TIMER_0 ((struct c4x_timer*)0x100020) #else #define C4X_TIMER_0 ((struct c4x_timer*)0x808020) #define C4X_TIMER_1 ((struct c4x_timer*)0x808030) #endif /* XXX how portable */ /* C32 Internal Control Registers */ #define C4X_STRB0_REG 0x808064 #define C4X_STRB1_REG 0x808068 #define C4X_IOSTRB_REG 0x808060 /* C32 Internal RAM Locations */ /* XXX how long */ #define C4X_RAM_BLK_0 0x87fe00 #define C4X_RAM_BLK_1 0x87ff00 /* * Data Structures to Overlay the Peripherals on the CPU */ struct c4x_timer { volatile int tcontrol; volatile int r1[3]; volatile int tcounter; volatile int r2[3]; volatile int tperiod; }; /* * Timer Support Routines * * The following section of C4x timer code is based on C40 specific * timer code from Ran Cabell <rcabell@norfolk.infi.net>. The * only C3x/C4x difference spotted was the address of the timer. * The names have been changed to be more RTEMS like. */ #define c4x_timer_get_control( _timer ) (volatile int)(_timer->tcontrol) #define c4x_timer_set_control( _timer, _value ) \ do { \ (volatile int)(_timer->tcontrol) = _value; \ } while (0); #define c4x_timer_start( _timer ) \ c4x_timer_set_control(_timer, 0x02c1 ) #define c4x_timer_stop( _timer ) _timer->tcontrol = 0 #define c4x_timer_get_counter( _timer ) (volatile int)(_timer->tcounter) #define c4x_timer_set_counter( _timer, _value ) \ do { \ (volatile int)(_timer->tcounter) = _value; \ } while (0); #define c4x_timer_get_period( _timer ) (volatile int)(_timer->tperiod) #define c4x_timer_set_period( _timer, _value ) \ do { \ (volatile int)(_timer->tperiod) = _value; \ } while (0); /* * IO Flags * * NOTE: iof on c3x, iiof on c4x */ #ifdef _TMS320C40 #else static inline unsigned32 c3x_get_iof( void ) { register unsigned32 iof_value; __asm__ volatile ("ldi iof, %0" : "=r" (iof_value)); return iof_value; } static inline void c3x_set_iof( unsigned32 value ) { __asm__ volatile ("ldi %0,iof" : : "g" (value) : "iof", "cc"); } #endif #endif /* end if include file */