diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h')
| -rw-r--r-- | c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h b/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h deleted file mode 100644 index 2d536d871b..0000000000 --- a/c/src/lib/libbsp/arm/arm_bare_bsp/irq/irq.h +++ /dev/null @@ -1,166 +0,0 @@ -/* irq.h - * - * This include file describe the data structure and the functions implemented - * by rtems to write interrupt handlers. - * - * Copyright (c) 2000 Canon Research Centre France SA. - * Emmanuel Raguet, mailto:raguet@crf.canon.fr - * - * The license and distribution terms for this file may be - * found in found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - */ - -#ifndef _IRQ_H_ -#define _IRQ_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * Include some preprocessor value also used by assember code - */ - -#include <rtems.h> - -extern void default_int_handler(); -/*-------------------------------------------------------------------------+ -| Constants -+--------------------------------------------------------------------------*/ - - /* enum of the possible interrupt sources */ -typedef enum { - BSP_INT_1 = 0, - BSP_INT_2 = 1, - BSP_UART = 2, - BSP_MAX_INT = 3 -} rtems_irq_symbolic_name; - - /* define that can be useful (the values are just examples) */ -#define INTMASK 0x01 -#define VECTOR_TABLE 0x00 - -/* - * Type definition for RTEMS managed interrupts - */ -typedef unsigned char rtems_irq_level; -typedef unsigned char rtems_irq_trigger; - -struct __rtems_irq_connect_data__; /* forward declaratiuon */ - -typedef void (*rtems_irq_hdl) (void); -typedef void (*rtems_irq_enable) (const struct __rtems_irq_connect_data__*); -typedef void (*rtems_irq_disable) (const struct __rtems_irq_connect_data__*); -typedef int (*rtems_irq_is_enabled) (const struct __rtems_irq_connect_data__*); - -typedef struct __rtems_irq_connect_data__ { - /* - * IRQ line - */ - rtems_irq_symbolic_name name; - /* - * handler. See comment on handler properties below in function prototype. - */ - rtems_irq_hdl hdl; - /* - * function for enabling interrupts at device level (ONLY!). - * The BSP code will automatically enable it at i8259s level. - * RATIONALE : anyway such code has to exist in current driver code. - * It is usually called immediately AFTER connecting the interrupt handler. - * RTEMS may well need such a function when restoring normal interrupt - * processing after a debug session. - * - */ - rtems_irq_enable on; - /* - * function for disabling interrupts at device level (ONLY!). - * The code will disable it at i8259s level. RATIONALE : anyway - * such code has to exist for clean shutdown. It is usually called - * BEFORE disconnecting the interrupt. RTEMS may well need such - * a function when disabling normal interrupt processing for - * a debug session. May well be a NOP function. - */ - rtems_irq_disable off; - /* - * function enabling to know what interrupt may currently occur - * if someone manipulates the i8259s interrupt mask without care... - */ - rtems_irq_is_enabled isOn; - /* - * priority level at the vplus level - */ - rtems_irq_level irqLevel; - /* - * Trigger way : Rising or falling edge or High or low level - */ - rtems_irq_trigger irqTrigger; -} rtems_irq_connect_data; - -/*-------------------------------------------------------------------------+ -| Function Prototypes. -+--------------------------------------------------------------------------*/ -/* - * ------------------------ RTEMS Single Irq Handler Mngt Routines ---------------- - */ - -/* - * function to initialize the interrupt for a specific BSP - */ -void BSP_rtems_irq_mngt_init(); - -/* - * function to connect a particular irq handler. This hanlder will NOT be called - * directly as the result of the corresponding interrupt. Instead, a RTEMS - * irq prologue will be called that will : - * - * 1) save the C scratch registers, - * 2) switch to a interrupt stack if the interrupt is not nested, - * 3) store the current i8259s' interrupt masks - * 4) modify them to disable the current interrupt at 8259 level (and may - * be others depending on software priorities) - * 5) aknowledge the i8259s', - * 6) demask the processor, - * 7) call the application handler - * - * As a result the hdl function provided - * - * a) can perfectly be written is C, - * b) may also well directly call the part of the RTEMS API that can be used - * from interrupt level, - * c) It only responsible for handling the jobs that need to be done at - * the device level including (aknowledging/re-enabling the interrupt at device, - * level, getting the data,...) - * - * When returning from the function, the following will be performed by - * the RTEMS irq epilogue : - * - * 1) masks the interrupts again, - * 2) restore the original i8259s' interrupt masks - * 3) switch back on the orinal stack if needed, - * 4) perform rescheduling when necessary, - * 5) restore the C scratch registers... - * 6) restore initial execution flow - * - */ - -int BSP_install_rtems_irq_handler (const rtems_irq_connect_data*); -/* - * function to get the current RTEMS irq handler for ptr->name. It enables to - * define hanlder chain... - */ -int BSP_get_current_rtems_irq_handler (rtems_irq_connect_data* ptr); -/* - * function to get disconnect the RTEMS irq handler for ptr->name. - * This function checks that the value given is the current one for safety reason. - * The user can use the previous function to get it. - */ -int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data*); - -#ifdef __cplusplus -} -#endif - -#endif /* _IRQ_H_ */ -/* end of include file */ |