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Diffstat (limited to 'core/include/kernel/interrupt.h')
| -rw-r--r-- | core/include/kernel/interrupt.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/core/include/kernel/interrupt.h b/core/include/kernel/interrupt.h new file mode 100644 index 0000000..7732380 --- /dev/null +++ b/core/include/kernel/interrupt.h @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2016, Linaro Limited + * All rights reserved. + * + * 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 HOLDER 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 __KERNEL_INTERRUPT_H +#define __KERNEL_INTERRUPT_H + +#include <types_ext.h> +#include <sys/queue.h> + +#define ITRF_TRIGGER_LEVEL (1 << 0) + +struct itr_chip { + const struct itr_ops *ops; +}; + +struct itr_ops { + void (*add)(struct itr_chip *chip, size_t it, uint32_t flags); + void (*enable)(struct itr_chip *chip, size_t it); + void (*disable)(struct itr_chip *chip, size_t it); + void (*raise_pi)(struct itr_chip *chip, size_t it); + void (*raise_sgi)(struct itr_chip *chip, size_t it, + uint8_t cpu_mask); + void (*set_affinity)(struct itr_chip *chip, size_t it, + uint8_t cpu_mask); +}; + +enum itr_return { + ITRR_NONE, + ITRR_HANDLED, +}; + +struct itr_handler { + size_t it; + uint32_t flags; + enum itr_return (*handler)(struct itr_handler *h); + void *data; + SLIST_ENTRY(itr_handler) link; +}; + +void itr_init(struct itr_chip *data); +void itr_handle(size_t it); + +void itr_add(struct itr_handler *handler); +void itr_enable(size_t it); +void itr_disable(size_t it); +/* raise the Peripheral Interrupt corresponding to the interrupt ID */ +void itr_raise_pi(size_t it); +/* + * raise the Software Generated Interrupt corresponding to the interrupt ID, + * the cpu_mask represents which cpu interface to forward. + */ +void itr_raise_sgi(size_t it, uint8_t cpu_mask); +/* + * let corresponding interrupt forward to the cpu interface + * according to the cpu_mask. + */ +void itr_set_affinity(size_t it, uint8_t cpu_mask); + +#endif /*__KERNEL_INTERRUPT_H*/ |