diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/efi68k/clock/ckinit.c')
-rw-r--r-- | c/src/lib/libbsp/m68k/efi68k/clock/ckinit.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/c/src/lib/libbsp/m68k/efi68k/clock/ckinit.c b/c/src/lib/libbsp/m68k/efi68k/clock/ckinit.c deleted file mode 100644 index 6640e6e0c9..0000000000 --- a/c/src/lib/libbsp/m68k/efi68k/clock/ckinit.c +++ /dev/null @@ -1,150 +0,0 @@ -/* Clock_init() - * - * This routine initializes the DP8570A periodic interrupt on the - * efi68k board. The tick frequency is 1 millisecond. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * $Id$ - */ - -#include <stdlib.h> -#include <bsp.h> -#include <rtems/libio.h> -#include <DP8570A.h> - -#define CLOCK_VECTOR (TCP_ISR_LEVEL+24) - -rtems_unsigned32 Clock_isrs; /* ISRs until next tick */ -volatile rtems_unsigned32 Clock_driver_ticks; - /* ticks since initialization */ -rtems_isr_entry Old_ticker; - -void Clock_exit( void ); - -/* - * These are set by clock driver during its init - */ - -rtems_device_major_number rtems_clock_major = ~0; -rtems_device_minor_number rtems_clock_minor; - - -void per_interrupt(void) -{ - Clock_driver_ticks += 1; - - *MSR = PER; - - if ( Clock_isrs == 1 ) { - rtems_clock_tick(); - Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; - } - else - Clock_isrs -= 1; -} - -rtems_isr Clock_isr( - rtems_vector_number vector -) -{ - unsigned char entry_msr, msr; - - entry_msr = *MSR; - *MSR = 0; - while ( (msr=*MSR) & INT ) - /* test enabled interrupt bits */ - if (msr & PER) - per_interrupt(); - else if (msr & T0) { - *MSR = T0; /* reset interrupt */ - Timer_interrupts++; /* inc wrap around counter */ - } - else - /* there has been an error if we reach this point */ - /* default action: reset all the interrupts */ - *MSR = ( PER | AL | T0 | T1 ); - *MSR = entry_msr & (RS | PS); -} - -void Install_clock( - rtems_isr_entry clock_isr -) -{ - Clock_driver_ticks = 0; - Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; - - Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 ); - - *MSR = RS; /* enable 1mS interrupts */ - *ICR0 |= OME; - - atexit( Clock_exit ); -} - -void Clock_exit( void ) -{ - /* shutdown periodic interrupt */ - *MSR = RS; - *ICR0 &= 0xc0; - /* do not restore old vector */ -} - -rtems_device_driver Clock_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp -) -{ - Install_clock( Clock_isr ); - - /* - * make major/minor avail to others such as shared memory driver - */ - - rtems_clock_major = major; - rtems_clock_minor = minor; - - return RTEMS_SUCCESSFUL; -} - -rtems_device_driver Clock_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp -) -{ - rtems_unsigned32 isrlevel; - rtems_libio_ioctl_args_t *args = pargp; - - if (args == 0) - goto done; - - /* - * This is hokey, but until we get a defined interface - * to do this, it will just be this simple... - */ - - if (args->command == rtems_build_name('I', 'S', 'R', ' ')) - { - Clock_isr(CLOCK_VECTOR); - } - else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) - { - rtems_interrupt_disable( isrlevel ); - (void) set_vector( args->buffer, CLOCK_VECTOR, 1 ); - rtems_interrupt_enable( isrlevel ); - } - -done: - return RTEMS_SUCCESSFUL; -} |