diff options
Diffstat (limited to 'c/src/lib/libcpu/mips')
| -rw-r--r-- | c/src/lib/libcpu/mips/clock/ckinit.c | 245 | ||||
| -rw-r--r-- | c/src/lib/libcpu/mips/clock/clock.S | 45 | ||||
| -rw-r--r-- | c/src/lib/libcpu/mips/clock/clock.h | 25 | ||||
| -rw-r--r-- | c/src/lib/libcpu/mips/timer/gettime.S | 35 | ||||
| -rw-r--r-- | c/src/lib/libcpu/mips/timer/timer.c | 136 |
5 files changed, 0 insertions, 486 deletions
diff --git a/c/src/lib/libcpu/mips/clock/ckinit.c b/c/src/lib/libcpu/mips/clock/ckinit.c deleted file mode 100644 index 9d30652376..0000000000 --- a/c/src/lib/libcpu/mips/clock/ckinit.c +++ /dev/null @@ -1,245 +0,0 @@ - -/* ckinit.c - * - * This file contains the clock driver initialization for the IDT 4650. - * - * Author: Craig Lebakken <craigl@transition.com> - * - * COPYRIGHT (c) 1996 by Transition Networks Inc. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Transition Networks not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * Transition Networks makes no representations about the suitability - * of this software for any purpose. - * - * Derived from c/src/lib/libbsp/no_cpu/no_bsp/clock/ckinit.c: - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - */ - -#ifndef lint -static char _sccsid[] = "@(#)ckinit.c 08/20/96 1.3\n"; -#endif - -#include <stdlib.h> - -#include <rtems.h> -#include <rtems/libio.h> -#include <bsp.h> - -#define EXT_INT5 0x8000 /* external interrupt 5 */ - -#include "clock.h" - -#define CLOCKS_PER_MICROSECOND ( CPU_CLOCK_RATE_MHZ ) /* equivalent to CPU clock speed in MHz */ - -void Clock_exit( void ); -rtems_isr Clock_isr( rtems_vector_number vector ); - - -/* - * The interrupt vector number associated with the clock tick device - * driver. - */ - -#define CLOCK_VECTOR_MASK EXT_INT5 -#define CLOCK_VECTOR 0x7 - -/* - * Clock_driver_ticks is a monotonically increasing counter of the - * number of clock ticks since the driver was initialized. - */ - -volatile rtems_unsigned32 Clock_driver_ticks; - -/* - * Clock_isrs is the number of clock ISRs until the next invocation of - * the RTEMS clock tick routine. The clock tick device driver - * gets an interrupt once a millisecond and counts down until the - * length of time between the user configured microseconds per tick - * has passed. - */ - -rtems_unsigned32 Clock_isrs; /* ISRs until next tick */ - -/* - * These are set by clock driver during its init - */ - -rtems_device_major_number rtems_clock_major = ~0; -rtems_device_minor_number rtems_clock_minor; - -/* - * The previous ISR on this clock tick interrupt vector. - */ - -rtems_isr_entry Old_ticker; - -void Clock_exit( void ); - -static unsigned32 mips_timer_rate = 0; - -/* - * Isr Handler - */ - -rtems_isr Clock_isr( - rtems_vector_number vector -) -{ -/* - * bump the number of clock driver ticks since initialization - * - * determine if it is time to announce the passing of tick as configured - * to RTEMS through the rtems_clock_tick directive - * - * perform any timer dependent tasks - */ - - /* refresh the internal CPU timer */ - mips_set_timer( mips_timer_rate ); - - Clock_driver_ticks += 1; - - rtems_clock_tick(); -} - -/* User callback shell (set from Clock_Control) */ -static void (*user_callback)(void); - -rtems_isr User_Clock_isr( - rtems_vector_number vector -) -{ - /* refresh the internal CPU timer */ - mips_set_timer( mips_timer_rate ); - - if (user_callback) - user_callback(); -} - -/* - * Install_clock - * - * Install a clock tick handleR and reprograms the chip. This - * is used to initially establish the clock tick. - */ - -void Install_clock( - rtems_isr_entry clock_isr -) -{ - /* - * Initialize the clock tick device driver variables - */ - - Clock_driver_ticks = 0; - Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; - - /* - * If ticks_per_timeslice is configured as non-zero, then the user - * wants a clock tick. - */ - - if ( BSP_Configuration.ticks_per_timeslice ) { - Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 ); - /* - * Hardware specific initialize goes here - */ - - mips_timer_rate = BSP_Configuration.microseconds_per_tick * CLOCKS_PER_MICROSECOND; - mips_set_timer( mips_timer_rate ); - enable_int(CLOCK_VECTOR_MASK); - } - - /* - * Schedule the clock cleanup routine to execute if the application exits. - */ - - atexit( Clock_exit ); -} - -/* - * Clean up before the application exits - */ - -void Clock_exit( void ) -{ - if ( BSP_Configuration.ticks_per_timeslice ) { - - /* mips: turn off the timer interrupts */ - disable_int(CLOCK_VECTOR_MASK); - - } -} - -/* - * Clock_initialize - * - * Device driver entry point for clock tick driver initialization. - */ - -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 ); - user_callback = (void (*)(void))args->buffer; - (void) set_vector( User_Clock_isr, CLOCK_VECTOR, 1 ); - rtems_interrupt_enable( isrlevel ); - } - -done: - return RTEMS_SUCCESSFUL; -} diff --git a/c/src/lib/libcpu/mips/clock/clock.S b/c/src/lib/libcpu/mips/clock/clock.S deleted file mode 100644 index ec0280f494..0000000000 --- a/c/src/lib/libcpu/mips/clock/clock.S +++ /dev/null @@ -1,45 +0,0 @@ -/* clock.s - * - * This file contains the assembly code for the IDT 4650 clock driver. - * - * Author: Craig Lebakken <craigl@transition.com> - * - * COPYRIGHT (c) 1996 by Transition Networks Inc. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Transition Networks not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * Transition Networks makes no representations about the suitability - * of this software for any purpose. - * - * $Id$ - */ -/* @(#)clock.S 08/20/96 1.2 */ - -#include <rtems/score/iregdef.h> -#include <rtems/score/idtcpu.h> -#include <rtems/score/idtmon.h> - -FRAME(mips_set_timer,sp,0,ra) - .set noreorder - mfc0 t0,C0_COUNT - nop - addu t0,a0,t0 - mtc0 t0,C0_COMPARE - nop - j ra - .set reorder -ENDFRAME(mips_set_timer) - -FRAME(mips_get_timer,sp,0,ra) - .set noreorder - mfc0 v0,C0_COUNT - nop - j ra - .set reorder -ENDFRAME(mips_get_timer) diff --git a/c/src/lib/libcpu/mips/clock/clock.h b/c/src/lib/libcpu/mips/clock/clock.h deleted file mode 100644 index a14304f668..0000000000 --- a/c/src/lib/libcpu/mips/clock/clock.h +++ /dev/null @@ -1,25 +0,0 @@ -/* clock.s - * - * This file contains the assembly code for the IDT 4650 clock driver. - * - * Author: Craig Lebakken <craigl@transition.com> - * - * COPYRIGHT (c) 1996 by Transition Networks Inc. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Transition Networks not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * Transition Networks makes no representations about the suitability - * of this software for any purpose. - * - * $Id$ - */ - -/* @(#)clock.h 08/20/96 1.2 */ - -extern void mips_set_timer( unsigned32 timer_clock_interval ); diff --git a/c/src/lib/libcpu/mips/timer/gettime.S b/c/src/lib/libcpu/mips/timer/gettime.S deleted file mode 100644 index a00f2d5819..0000000000 --- a/c/src/lib/libcpu/mips/timer/gettime.S +++ /dev/null @@ -1,35 +0,0 @@ -/* gettime.s - * - * This file contains the assembly code for the IDT 4650 timer driver. - * - * Author: Craig Lebakken <craigl@transition.com> - * - * COPYRIGHT (c) 1996 by Transition Networks Inc. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Transition Networks not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * Transition Networks makes no representations about the suitability - * of this software for any purpose. - * - * $Id$ - */ - -/* @(#)gettime.S 08/20/96 1.2 */ - -#include <rtems/score/iregdef.h> -#include <rtems/score/idtcpu.h> -#include <rtems/score/idtmon.h> - -FRAME(mips_read_timer,sp,0,ra) - .set noreorder - mfc0 v0,C0_COUNT - nop - j ra - .set reorder -ENDFRAME(mips_read_timer) diff --git a/c/src/lib/libcpu/mips/timer/timer.c b/c/src/lib/libcpu/mips/timer/timer.c deleted file mode 100644 index 4e3cfb06b0..0000000000 --- a/c/src/lib/libcpu/mips/timer/timer.c +++ /dev/null @@ -1,136 +0,0 @@ -/* timer.c - * - * This file contains the initialization code for the IDT 4650 timer driver. - * - * Author: Craig Lebakken <craigl@transition.com> - * - * COPYRIGHT (c) 1996 by Transition Networks Inc. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Transition Networks not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * Transition Networks makes no representations about the suitability - * of this software for any purpose. - * - * derived from src/lib/libbsp/no_cpu/no_bsp/timer/timer.c - * - * This file manages the benchmark timer used by the RTEMS Timing Test - * Suite. Each measured time period is demarcated by calls to - * Timer_initialize() and Read_timer(). Read_timer() usually returns - * the number of microseconds since Timer_initialize() exitted. - * - * NOTE: It is important that the timer start/stop overhead be - * determined when porting or modifying this code. - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - */ - -#ifndef lint -static char _sccsid[] = "@(#)timer.c 08/20/96 1.5\n"; -#endif - -#include <rtems.h> -#include <bsp.h> - -#define CLOCKS_PER_MICROSECOND ( CPU_CLOCK_RATE_MHZ ) -#define TIMER_MAX_VALUE 0xffffffff - -extern unsigned32 mips_read_timer( void ); - -static rtems_boolean Timer_driver_Find_average_overhead; -static unsigned32 Timer_initial_value = 0; - -void Timer_initialize( void ) -{ - Timer_initial_value = mips_read_timer(); - /* - * Somehow start the timer - */ - - /* Timer on 4650 is always running */ -} - -/* - * The following controls the behavior of Read_timer(). - * - * AVG_OVEREHAD is the overhead for starting and stopping the timer. It - * is usually deducted from the number returned. - * - * LEAST_VALID is the lowest number this routine should trust. Numbers - * below this are "noise" and zero is returned. - */ - -#define AVG_OVERHEAD 8 /* It typically takes X.X microseconds */ - /* (Y countdowns) to start/stop the timer. */ - /* This value is in cycles. */ -#define LEAST_VALID 1 /* Don't trust a clicks value lower than this */ - -int Read_timer( void ) -{ - unsigned64 clicks; - unsigned32 total; - - /* - * Read the timer and see how many clicks it has been since we started. - */ - - clicks = mips_read_timer(); /* XXX: read some HW here */ - if (clicks < Timer_initial_value) - { - clicks += TIMER_MAX_VALUE; - } - clicks -= Timer_initial_value; - - /* - * Total is calculated by taking into account the number of timer overflow - * interrupts since the timer was initialized and clicks since the last - * interrupts. - */ -#if 0 /* leave total in number of cycles */ - total = clicks / CLOCKS_PER_MICROSECOND; -#else - total = clicks; -#endif - - if ( Timer_driver_Find_average_overhead == 1 ) - return total; /* in # cycles units */ - else { - if ( total < LEAST_VALID ) - return 0; /* below timer resolution */ - /* - * leave total in cycles - */ - return (total - AVG_OVERHEAD); - } -} - -/* - * Empty function call used in loops to measure basic cost of looping - * in Timing Test Suite. - */ - -rtems_status_code Empty_function( void ) -{ - return RTEMS_SUCCESSFUL; -} - -void Set_find_average_overhead( - rtems_boolean find_flag -) -{ - Timer_driver_Find_average_overhead = find_flag; -} - |