diff options
Diffstat (limited to 'c/src/lib/libbsp/mips/hurricane/clock/ckinit.c')
| -rw-r--r-- | c/src/lib/libbsp/mips/hurricane/clock/ckinit.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/c/src/lib/libbsp/mips/hurricane/clock/ckinit.c b/c/src/lib/libbsp/mips/hurricane/clock/ckinit.c deleted file mode 100644 index c0d2a38269..0000000000 --- a/c/src/lib/libbsp/mips/hurricane/clock/ckinit.c +++ /dev/null @@ -1,219 +0,0 @@ -/** - * @file - * - * This file contains the clock driver initialization for the Hurricane BSP. - */ - -/* - * 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) 1989-2012. - * 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.org/license/LICENSE. - */ - -/* - * Rather than deleting this, it is commented out to (hopefully) help - * the submitter send updates. - * - * static char _sccsid[] = "@(#)ckinit.c 08/20/96 1.3\n"; - */ - - -#include <stdlib.h> - -#include <rtems.h> -#include <bsp.h> -#include <bsp/irq.h> -#include <rtems/clockdrv.h> - -extern uint32_t bsp_clicks_per_microsecond; - -#define EXT_INT1 0x800 /* external interrupt 5 */ - -#include "clock.h" - -rtems_isr USC_isr(void *unused); - -void reset_wdt(void); -void enable_wdi(void); -void init_hbt(void); -void enable_hbi(void); -void disable_hbi(void); - -void Clock_exit(void); -rtems_isr Clock_isr(rtems_vector_number vector); -rtems_isr User_Clock_isr(rtems_vector_number vector); -void Install_clock(rtems_isr_entry clock_isr); - - -/* - * The interrupt vector number associated with the clock tick device - * driver. - */ - -#define CLOCK_VECTOR_MASK EXT_INT1 -#define CLOCK_VECTOR MIPS_INTERRUPT_BASE + 0x3 - -/* - * Clock_driver_ticks is a monotonically increasing counter of the - * number of clock ticks since the driver was initialized. - */ - -volatile uint32_t 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. - */ - -uint32_t Clock_isrs; /* ISRs until next tick */ - -/* - * The previous ISR on this clock tick interrupt vector. - */ - -rtems_isr_entry Old_ticker; - -void Clock_exit( void ); - -static uint32_t 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 - */ - - reset_wdt(); /* Reset hardware watchdog timer */ - - 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 -) -{ - 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 = rtems_configuration_get_milliseconds_per_tick(); - - mips_timer_rate = rtems_configuration_get_microseconds_per_tick() * - bsp_clicks_per_microsecond; - - /* - * Hardware specific initialize goes here - */ - - /* Set up USC heartbeat timer to generate interrupts */ - disable_hbi(); /* Disable heartbeat interrupt in USC */ - - /* Install interrupt handler */ - rtems_interrupt_handler_install( - CLOCK_VECTOR, - "clock", - 0, - USC_isr, - NULL - ); - - init_hbt(); /* Initialize heartbeat timer */ - - reset_wdt(); /* Reset watchdog timer */ - - enable_wdi(); /* Enable watchdog interrupt in USC */ - - enable_hbi(); /* Enable heartbeat interrupt in USC */ - - /* Enable USC interrupt in MIPS processor */ - mips_enable_in_interrupt_mask(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 ) -{ - /* mips: turn off the timer interrupts */ - mips_disable_in_interrupt_mask(~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 ); - - return RTEMS_SUCCESSFUL; -} - |