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https://github.com/projectacrn/acrn-hypervisor.git
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f6e45c9b13
Since we don't support shared irq, dev_handler_node which works as action node, is not needed anymore. This commit removes the dev_handler_node struct and does some relevant changes, including: - moves necessary fields to struct irq_desc: action, priv_data, name; and removes unused handler_data; - changes return type of pri_/normal_register_handler() from dev_handler_node* to int32_t, which is irq num (>= 0) on success, and errno (> 0) on failure. - changes unregister_irq_handler() to take argument unint32_t instead of dev_handler_node*; - changes are made to the places where these APIs are called. Signed-off-by: Yan, Like <like.yan@intel.com> Reviewed-by: Eddie Dong <eddie.dong@intel.com>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef COMMON_IRQ_H
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#define COMMON_IRQ_H
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enum irq_mode {
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IRQ_PULSE,
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IRQ_ASSERT,
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IRQ_DEASSERT,
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};
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enum irq_state {
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IRQ_NOT_ASSIGNED = 0,
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IRQ_ASSIGNED,
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};
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enum irq_desc_state {
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IRQ_DESC_PENDING,
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IRQ_DESC_IN_PROCESS,
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};
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typedef int (*irq_action_t)(uint32_t irq, void *dev_data);
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struct irq_request_info {
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/* vector set to 0xE0 ~ 0xFF for pri_register_handler
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* and set to VECTOR_INVALID for normal_register_handler
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*/
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uint32_t vector;
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irq_action_t func;
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void *priv_data;
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char *name;
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};
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/* any field change in below required irq_lock protection with irqsave */
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struct irq_desc {
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uint32_t irq; /* index to irq_desc_base */
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enum irq_state used; /* this irq have assigned to device */
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enum irq_desc_state state; /* irq_desc status */
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uint32_t vector; /* assigned vector */
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int (*irq_handler)(struct irq_desc *irq_desc, void *handler_data);
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/* callback for irq flow handling */
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irq_action_t action; /* callback registered from component */
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void *priv_data; /* irq_action private data */
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char name[32]; /* name of component */
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spinlock_t irq_lock;
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uint64_t *irq_cnt; /* this irq cnt happened on CPUs */
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uint64_t irq_lost_cnt;
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};
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uint32_t irq_mark_used(uint32_t irq);
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uint32_t irq_desc_alloc_vector(uint32_t irq);
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void irq_desc_try_free_vector(uint32_t irq);
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uint32_t irq_to_vector(uint32_t irq);
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int32_t pri_register_handler(uint32_t irq,
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uint32_t vector,
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irq_action_t func,
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void *priv_data,
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const char *name);
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int32_t normal_register_handler(uint32_t irq,
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irq_action_t func,
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void *priv_data,
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const char *name);
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void unregister_handler_common(uint32_t irq);
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typedef int (*irq_handler_t)(struct irq_desc *desc, void *handler_data);
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void update_irq_handler(uint32_t irq, irq_handler_t func);
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#endif /* COMMON_IRQ_H */
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