irq.h

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/* irq.h
 *
 *  This include file describe the data structure and the functions implemented
 *  by RTEMS to write interrupt handlers.
 *
 *  Copyright (C) 1999 valette@crf.canon.fr
 *
 *  This code is heavilly inspired by the public specification of STREAM V2
 *  that can be found at :
 *
 *      <http://www.chorus.com/Documentation/index.html> by following
 *  the STREAM API Specification Document link.
 *
 *  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.
 *
 *  Adapted for the mvme3100 BSP by T. Straumann, 2007.
 */
 
#ifndef BSP_POWERPC_IRQ_H
#define BSP_POWERPC_IRQ_H
 
#define BSP_SHARED_HANDLER_SUPPORT      1
#include <rtems/irq.h>
 
#ifndef ASM
 
#include <bsp/irq-default.h>
 
#ifdef __cplusplus
extern "C" {
#endif

 
/* Must pad number of external sources to 16 because
 * of the layout of vector/priority registers in the
 * 8540's openpic where there is a gap between
 * registers corresponding to external and core sources.
 */
#define BSP_EXT_IRQ_NUMBER          (16)
#define BSP_CORE_IRQ_NUMBER         (32)
 
/* openpic glue code from shared/irq assigns priorities and configures
 * initial ISRs for BSP_PCI_IRQ_NUMBER entries (plus ISA stuff on legacy
 * boards). Hence PCI_IRQ_NUMBER must also cover the internal sources
 * even though they have nothing to do with PCI.
 */
#define BSP_PCI_IRQ_NUMBER          (BSP_EXT_IRQ_NUMBER + BSP_CORE_IRQ_NUMBER)
#define BSP_PCI_IRQ_LOWEST_OFFSET   (0)
#define BSP_PCI_IRQ_MAX_OFFSET      (BSP_PCI_IRQ_LOWEST_OFFSET + BSP_PCI_IRQ_NUMBER - 1)
 
#define BSP_CORE_IRQ_LOWEST_OFFSET  (BSP_PCI_IRQ_LOWEST_OFFSET + BSP_EXT_IRQ_NUMBER)
#define BSP_CORE_IRQ_MAX_OFFSET     (BSP_CORE_IRQ_LOWEST_OFFSET + BSP_CORE_IRQ_NUMBER - 1)
 
/*
 * PowerPC exceptions handled as interrupt where an RTEMS managed interrupt
 * handler might be connected
 */
#define BSP_PROCESSOR_IRQ_NUMBER    (1)
#define BSP_PROCESSOR_IRQ_LOWEST_OFFSET (BSP_CORE_IRQ_MAX_OFFSET + 1)
#define BSP_PROCESSOR_IRQ_MAX_OFFSET    (BSP_PROCESSOR_IRQ_LOWEST_OFFSET + BSP_PROCESSOR_IRQ_NUMBER - 1)
/* Misc vectors for OPENPIC irqs (IPI, timers)
 */
#define BSP_MISC_IRQ_NUMBER     (8)
#define BSP_MISC_IRQ_LOWEST_OFFSET  (BSP_PROCESSOR_IRQ_MAX_OFFSET + 1)
#define BSP_MISC_IRQ_MAX_OFFSET     (BSP_MISC_IRQ_LOWEST_OFFSET + BSP_MISC_IRQ_NUMBER - 1)
/*
 * Summary
 */
#define BSP_IRQ_NUMBER          (BSP_MISC_IRQ_MAX_OFFSET + 1)
#define BSP_LOWEST_OFFSET       (BSP_PCI_IRQ_LOWEST_OFFSET)
#define BSP_MAX_OFFSET          (BSP_MISC_IRQ_MAX_OFFSET)
 
/*
 * Some PCI IRQ symbolic name definition
 */
#define BSP_PCI_IRQ0            (BSP_PCI_IRQ_LOWEST_OFFSET)
 
#define BSP_VME0_IRQ            (BSP_PCI_IRQ_LOWEST_OFFSET  +  0)
#define BSP_VME1_IRQ            (BSP_PCI_IRQ_LOWEST_OFFSET  +  1)
#define BSP_VME2_IRQ            (BSP_PCI_IRQ_LOWEST_OFFSET  +  2)
#define BSP_VME3_IRQ            (BSP_PCI_IRQ_LOWEST_OFFSET  +  3)
 
#define BSP_ABORT_IRQ           (BSP_PCI_IRQ_LOWEST_OFFSET  +  8)
#define BSP_TEMP_IRQ            (BSP_PCI_IRQ_LOWEST_OFFSET  +  9)
#define BSP_PHY_IRQ             (BSP_PCI_IRQ_LOWEST_OFFSET  + 10)
#define BSP_RTC_IRQ             (BSP_PCI_IRQ_LOWEST_OFFSET  + 11)
 
/* Weird - they provide 3 different IRQ lines per ethernet controller
 * but only one shared line for 2 UARTs ???
 */
#define BSP_UART_COM1_IRQ       (BSP_CORE_IRQ_LOWEST_OFFSET + 26)
#define BSP_UART_COM2_IRQ       (BSP_CORE_IRQ_LOWEST_OFFSET + 26)
#define BSP_I2C_IRQ             (BSP_CORE_IRQ_LOWEST_OFFSET + 27)
 
/*
 * Some internal (CORE) name definitions
 */
/* Ethernet (FEC) */
#define BSP_CORE_IRQ_FEC        (BSP_CORE_IRQ_LOWEST_OFFSET + 25)
/* i2c controller */
#define BSP_CORE_IRQ_I2C        (BSP_CORE_IRQ_LOWEST_OFFSET + 27)
 
/*
 * Some Processor execption handled as RTEMS IRQ symbolic name definition
 */
#define BSP_DECREMENTER         (BSP_PROCESSOR_IRQ_LOWEST_OFFSET)
 
/*-------------------------------------------------------------------------+
| Function Prototypes.
+--------------------------------------------------------------------------*/
 
extern void BSP_rtems_irq_mng_init(unsigned cpuId);
 
#include <bsp/irq_supp.h>
 
#ifdef __cplusplus
};
#endif
 
#endif
#endif