irqimpl.h

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/* SPDX-License-Identifier: BSD-2-Clause */

 
/*
 * Copyright (C) 2021 embedded brains GmbH & Co. KG
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef LIBBSP_SPARC_LEON3_BSP_IRQIMPL_H
#define LIBBSP_SPARC_LEON3_BSP_IRQIMPL_H
 
#include <rtems.h>
#include <grlib/irqamp-regs.h>
#include <grlib/io.h>
 
#include <bspopts.h>
 
struct ambapp_dev;
 
#ifdef __cplusplus
extern "C" {
#endif


extern uint32_t LEON3_Cpu_Index;

extern rtems_interrupt_lock LEON3_IrqCtrl_Lock;

#define LEON3_IRQCTRL_ACQUIRE( _lock_context ) \
  rtems_interrupt_lock_acquire( &LEON3_IrqCtrl_Lock, _lock_context )

#define LEON3_IRQCTRL_RELEASE( _lock_context ) \
  rtems_interrupt_lock_release( &LEON3_IrqCtrl_Lock, _lock_context )

#if defined(LEON3_IRQAMP_BASE)
#define LEON3_IrqCtrl_Regs ((irqamp *) LEON3_IRQAMP_BASE)
#else
extern irqamp *LEON3_IrqCtrl_Regs;

extern struct ambapp_dev *LEON3_IrqCtrl_Adev;
#endif

#if defined(LEON3_IRQAMP_EXTENDED_INTERRUPT)
#define LEON3_IrqCtrl_EIrq LEON3_IRQAMP_EXTENDED_INTERRUPT
#else
extern uint32_t LEON3_IrqCtrl_EIrq;
#endif

void leon3_ext_irq_init( irqamp *regs );

static inline uint32_t bsp_irq_fixup( uint32_t irq )
{
  uint32_t eirq;
  uint32_t cpu_self;
 
  if ( irq != LEON3_IrqCtrl_EIrq ) {
    return irq;
  }
 
  cpu_self = _LEON3_Get_current_processor();
  eirq = grlib_load_32( &LEON3_IrqCtrl_Regs->pextack[ cpu_self ] );
  eirq = IRQAMP_PEXTACK_EID_4_0_GET( eirq );
 
  if ( eirq < 16 ) {
    return irq;
  }
 
  return eirq;
}

 
#ifdef __cplusplus
}
#endif
 
#endif /* LIBBSP_SPARC_LEON3_BSP_IRQIMPL_H */