diff options
Diffstat (limited to 'bsps/sparc/leon3/include/bsp/irqimpl.h')
-rw-r--r-- | bsps/sparc/leon3/include/bsp/irqimpl.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/bsps/sparc/leon3/include/bsp/irqimpl.h b/bsps/sparc/leon3/include/bsp/irqimpl.h new file mode 100644 index 0000000000..9a9eae51f7 --- /dev/null +++ b/bsps/sparc/leon3/include/bsp/irqimpl.h @@ -0,0 +1,151 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @ingroup RTEMSBSPsSPARCLEON3 + * + * @brief This header file provides interfaces used by the interrupt support + * implementation. + */ + +/* + * 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 + +/** + * @addtogroup RTEMSBSPsSPARCLEON3 + * + * @{ + */ + +/** + * @brief This object provides the index of the boot processor. + * + * This object should be read-only after initialization. + */ +extern uint32_t LEON3_Cpu_Index; + +/** + * @brief This lock serializes the interrupt controller access. + */ +extern rtems_interrupt_lock LEON3_IrqCtrl_Lock; + +/** + * @brief Acquires the interrupt controller lock. + * + * @param[out] _lock_context is the lock context. + */ +#define LEON3_IRQCTRL_ACQUIRE( _lock_context ) \ + rtems_interrupt_lock_acquire( &LEON3_IrqCtrl_Lock, _lock_context ) + +/** + * @brief Releases the interrupt controller lock. + * + * @param[in, out] _lock_context is the lock context. + */ +#define LEON3_IRQCTRL_RELEASE( _lock_context ) \ + rtems_interrupt_lock_release( &LEON3_IrqCtrl_Lock, _lock_context ) + +/** + * @brief This pointer provides the IRQ(A)MP register block address. + */ +#if defined(LEON3_IRQAMP_BASE) +#define LEON3_IrqCtrl_Regs ((irqamp *) LEON3_IRQAMP_BASE) +#else +extern irqamp *LEON3_IrqCtrl_Regs; + +/** + * @brief This pointer provides the IRQ(A)MP device information block. + */ +extern struct ambapp_dev *LEON3_IrqCtrl_Adev; +#endif + +/** + * @brief This object provides the interrupt number used to multiplex extended + * interrupts or is zero if no extended interrupts are available. + * + * This object should be read-only after initialization. + */ +#if defined(LEON3_IRQAMP_EXTENDED_INTERRUPT) +#define LEON3_IrqCtrl_EIrq LEON3_IRQAMP_EXTENDED_INTERRUPT +#else +extern uint32_t LEON3_IrqCtrl_EIrq; +#endif + +/** + * @brief Initializes the interrupt controller for the boot processor. + * + * @param[in, out] regs is the IRQ(A)MP register block address. + */ +void leon3_ext_irq_init( irqamp *regs ); + +/** + * @brief Acknowledges and maps extended interrupts if this feature is + * available and the interrupt for extended interrupts is present. + * + * @param irq is the standard interrupt number. + */ +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 */ |