164ba8c5cd
This private data structure now no longer introduces a typedef or uses CamelCase. It's not necessary to specify the size of extern arrays, so we don't need a block of #ifdefs for every arch. Change-Id: I71fe61822ecef29820280a43d5ac2822a61f7082 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief ARC specific kernel interface header
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*
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* This header contains the ARC specific kernel interface. It is
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* included by the kernel interface architecture-abstraction header
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* include/arch/cpu.h)
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*/
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#ifndef _ARC_ARCH__H_
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#define _ARC_ARCH__H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* APIs need to support non-byte addressible architectures */
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#define OCTET_TO_SIZEOFUNIT(X) (X)
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#define SIZEOFUNIT_TO_OCTET(X) (X)
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#include <sw_isr_table.h>
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#ifdef CONFIG_CPU_ARCV2
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#include <arch/arc/v2/exc.h>
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#include <arch/arc/v2/irq.h>
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#include <arch/arc/v2/ffs.h>
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#include <arch/arc/v2/error.h>
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#include <arch/arc/v2/misc.h>
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#include <arch/arc/v2/aux_regs.h>
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#include <arch/arc/v2/arcv2_irq_unit.h>
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#include <arch/arc/v2/asm_inline.h>
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#include <arch/arc/v2/addr_types.h>
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#endif
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#define STACK_ALIGN 4
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#ifdef __cplusplus
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}
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#endif
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#ifndef _ASMLANGUAGE
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#include <irq.h>
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/* internal routine documented in C file, needed by IRQ_CONNECT() macro */
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extern void _irq_priority_set(unsigned int irq, unsigned int prio,
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uint32_t flags);
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/**
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* Configure a static interrupt.
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*
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* All arguments must be computable by the compiler at build time.
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*
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* Internally this function does a few things:
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*
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* 1. The enum statement has no effect but forces the compiler to only
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* accept constant values for the irq_p parameter, very important as the
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* numerical IRQ line is used to create a named section.
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*
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* 2. An instance of struct _isr_table_entry is created containing the ISR and
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* its parameter. If you look at how _sw_isr_table is created, each entry in
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* the array is in its own section named by the IRQ line number. What we are
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* doing here is to override one of the default entries (which points to the
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* spurious IRQ handler) with what was supplied here.
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*
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* 3. The priority level for the interrupt is configured by a call to
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* _irq_priority_set()
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*
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* @param irq_p IRQ line number
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* @param priority_p Interrupt priority, in range 0-13
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* @param isr_p Interrupt service routine
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* @param isr_param_p ISR parameter
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* @param flags_p IRQ options (ignored for now)
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*
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* @return The vector assigned to this interrupt
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*/
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#define _ARCH_IRQ_CONNECT(irq_p, priority_p, isr_p, isr_param_p, flags_p) \
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({ \
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enum { IRQ = irq_p }; \
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static struct _isr_table_entry _CONCAT(_isr_irq, irq_p) \
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__attribute__ ((used)) \
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__attribute__ ((section(STRINGIFY(_CONCAT(.gnu.linkonce.isr_irq, irq_p))))) = \
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{isr_param_p, isr_p}; \
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_irq_priority_set(irq_p, priority_p, flags_p); \
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irq_p; \
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})
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#endif
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#endif /* _ARC_ARCH__H_ */
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