diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/efi332/clock/ckinit.c')
-rw-r--r-- | c/src/lib/libbsp/m68k/efi332/clock/ckinit.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/c/src/lib/libbsp/m68k/efi332/clock/ckinit.c b/c/src/lib/libbsp/m68k/efi332/clock/ckinit.c deleted file mode 100644 index b32a660542..0000000000 --- a/c/src/lib/libbsp/m68k/efi332/clock/ckinit.c +++ /dev/null @@ -1,129 +0,0 @@ -/* Clock_init() - * - * This routine initailizes the periodic interrupt timer on - * the Motorola 68332. - * - * 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 <efi332.h> - -#define CLOCK_VECTOR EFI_PIV - -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; - -rtems_isr Clock_isr(rtems_vector_number vector) -{ - Clock_driver_ticks += 1; - - if ( Clock_isrs == 1 ) { - rtems_clock_tick(); - Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; - } - else - Clock_isrs -= 1; -} - -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 ); - - /* enable 1mS interrupts */ - *PITR = (unsigned short int)( SAM(0x09,0,PITM) );/* load counter */ - *PICR = (unsigned short int) /* enable interrupt */ - ( SAM(ISRL_PIT,8,PIRQL) | SAM(CLOCK_VECTOR,0,PIV) ); - - atexit( Clock_exit ); -} - -void Clock_exit( void ) -{ - /* shutdown the periodic interrupt */ - *PICR = (unsigned short int) - ( SAM(0,8,PIRQL) | SAM(CLOCK_VECTOR,0,PIV) ); - /* ^^ zero disables interrupt */ - - /* 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; -} - |