180 lines
6.3 KiB
C
180 lines
6.3 KiB
C
/****************************************************************************
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* arch/xtensa/src/esp32/esp32_cpuint.h
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_XTENSA_SRC_ESP32_ESP32_CPUINT_H
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#define __ARCH_XTENSA_SRC_ESP32_ESP32_CPUINT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <arch/irq.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define CPUINT_UNASSIGNED 0xff /* No peripheral assigned to this CPU interrupt */
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* Maps a CPU interrupt to the IRQ of the attached peripheral interrupt */
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extern uint8_t g_cpu0_intmap[ESP32_NCPUINTS];
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#ifdef CONFIG_SMP
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extern uint8_t g_cpu1_intmap[ESP32_NCPUINTS];
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: esp32_cpuint_initialize
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*
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* Description:
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* Initialize CPU interrupts
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned on
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* any failure.
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*
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****************************************************************************/
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int esp32_cpuint_initialize(void);
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/****************************************************************************
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* Name: esp32_alloc_levelint
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*
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* Description:
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* Allocate a level CPU interrupt
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*
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* Input Parameters:
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* priority - Priority of the CPU interrupt (1-5)
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*
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* Returned Value:
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* On success, the allocated level-sensitive, CPU interrupt numbr is
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* returned. A negated errno is returned on failure. The only possible
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* failure is that all level-sensitive CPU interrupts have already been
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* allocated.
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*
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****************************************************************************/
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int esp32_alloc_levelint(int priority);
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/****************************************************************************
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* Name: esp32_alloc_edgeint
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*
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* Description:
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* Allocate an edge CPU interrupt
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*
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* Input Parameters:
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* priority - Priority of the CPU interrupt (1-5)
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*
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* Returned Value:
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* On success, the allocated edge-sensitive, CPU interrupt numbr is
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* returned. A negated errno is returned on failure. The only possible
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* failure is that all edge-sensitive CPU interrupts have already been
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* allocated.
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*
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****************************************************************************/
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int esp32_alloc_edgeint(int priority);
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/****************************************************************************
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* Name: esp32_free_cpuint
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*
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* Description:
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* Free a previoulsy allocated CPU interrupt
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*
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* Input Parameters:
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* cpuint - The CPU interrupt number to be freed
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void esp32_free_cpuint(int cpuint);
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/****************************************************************************
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* Name: esp32_attach_peripheral
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*
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* Description:
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* Attach a peripheral interrupt to a CPU interrupt.
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*
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* Input Parameters:
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* cpu - The CPU to receive the interrupt 0=PRO CPU 1=APP CPU
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* periphid - The peripheral number from ira.h to be assigned to
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* a CPU interrupt.
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* cpuint - The CPU interrupt to receive the peripheral interrupt
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* assignment.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void esp32_attach_peripheral(int cpu, int periphid, int cpuint);
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/****************************************************************************
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* Name: esp32_detach_peripheral
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*
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* Description:
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* Detach a peripheral interrupt from a CPU interrupt.
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*
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* Input Parameters:
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* cpu - The CPU to receive the interrupt 0=PRO CPU 1=APP CPU
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* periphid - The peripheral number from irq.h to be detached from the
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* CPU interrupt.
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* cpuint - The CPU interrupt from which the peripheral interrupt will
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* be detached.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void esp32_detach_peripheral(int cpu, int periphid, int cpuint);
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#endif /* __ARCH_XTENSA_SRC_ESP32_ESP32_CPUINT_H */
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