zephyr/drivers/interrupt_controller/loapic_spurious.S

/*
 * Copyright (c) 2015 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @file
 * @brief LOAPIC spurious interrupt handler
 */

#include <kernel_structs.h>
#include <arch/x86/asm.h>

	GTEXT(_loapic_spurious_handler)

SECTION_FUNC(TEXT, _loapic_spurious_handler)
	iret
loapic: handle spurious interrupts A special situation may occur when a processor raises its task priority to be greater than or equal to the level of the interrupt for which the processor INTR signal is currently being asserted. If at the time the INTA cycle is issued, the interrupt that was to be dispensed has become masked (programmed by software), the local APIC will deliver a spurious-interrupt vector. Dispensing the spurious-interrupt vector does not affect the ISR, so the handler for this vector should return without an EOI. Change-Id: I4cf4744bd6efd68b72e2c380269de4181dc80bd9 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> 2015-12-10 06:53:41 +08:00			`/*`
			`* Copyright (c) 2015 Intel Corporation`
			`*`
license: Replace Apache boilerplate with SPDX tag Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org> 2017-01-19 09:01:01 +08:00			`* SPDX-License-Identifier: Apache-2.0`
loapic: handle spurious interrupts A special situation may occur when a processor raises its task priority to be greater than or equal to the level of the interrupt for which the processor INTR signal is currently being asserted. If at the time the INTA cycle is issued, the interrupt that was to be dispensed has become masked (programmed by software), the local APIC will deliver a spurious-interrupt vector. Dispensing the spurious-interrupt vector does not affect the ISR, so the handler for this vector should return without an EOI. Change-Id: I4cf4744bd6efd68b72e2c380269de4181dc80bd9 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> 2015-12-10 06:53:41 +08:00			`*/`

			`/**`
			`* @file`
spell: fix doxygen comment typos: /drivers Fix doxygen comment typos used to generate API docs Change-Id: I6fd5051c99bdcc731740c92001e525349c254d85 Signed-off-by: David B. Kinder <david.b.kinder@intel.com> 2017-04-20 01:45:34 +08:00			`* @brief LOAPIC spurious interrupt handler`
loapic: handle spurious interrupts A special situation may occur when a processor raises its task priority to be greater than or equal to the level of the interrupt for which the processor INTR signal is currently being asserted. If at the time the INTA cycle is issued, the interrupt that was to be dispensed has become masked (programmed by software), the local APIC will deliver a spurious-interrupt vector. Dispensing the spurious-interrupt vector does not affect the ISR, so the handler for this vector should return without an EOI. Change-Id: I4cf4744bd6efd68b72e2c380269de4181dc80bd9 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> 2015-12-10 06:53:41 +08:00			`*/`

kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com> 2016-11-08 23:36:50 +08:00			`#include <kernel_structs.h>`
loapic: handle spurious interrupts A special situation may occur when a processor raises its task priority to be greater than or equal to the level of the interrupt for which the processor INTR signal is currently being asserted. If at the time the INTA cycle is issued, the interrupt that was to be dispensed has become masked (programmed by software), the local APIC will deliver a spurious-interrupt vector. Dispensing the spurious-interrupt vector does not affect the ISR, so the handler for this vector should return without an EOI. Change-Id: I4cf4744bd6efd68b72e2c380269de4181dc80bd9 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> 2015-12-10 06:53:41 +08:00			`#include <arch/x86/asm.h>`

			`GTEXT(_loapic_spurious_handler)`

			`SECTION_FUNC(TEXT, _loapic_spurious_handler)`
			`iret`