mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-12 10:24:21 +00:00
08dd698d99
This commit cleans up the irq APIs which are a bit confusing.
- pri_register_handler(), normal_register_handler() and
common_register_handler() into request_irq(), and removed
the unnecessary struct irq_request_info;
- rename the unregister_common_handler() to free_irq();
After the revision, the common irq APIs becomes:
- int32_t request_irq(uint32_t irq,
irq_action_t action_fn,
void *action_data,
const char *name)
- void free_irq(uint32_t irq)
Signed-off-by: Yan, Like <like.yan@intel.com>
Reviewed-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
71 lines
1.5 KiB
C
71 lines
1.5 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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#include <hypervisor.h>
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static uint32_t notification_irq = IRQ_INVALID;
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/* run in interrupt context */
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static int kick_notification(__unused uint32_t irq, __unused void *data)
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{
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/* Notification vector does not require handling here, it's just used
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* to kick taget cpu out of non-root mode.
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*/
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return 0;
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}
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static int request_notification_irq(irq_action_t func, void *data,
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const char *name)
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{
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int32_t retval;
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if (notification_irq != IRQ_INVALID) {
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pr_info("%s, Notification vector already allocated on this CPU",
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__func__);
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return -EBUSY;
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}
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/* all cpu register the same notification vector */
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retval = request_irq(NOTIFY_IRQ, func, data, name);
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if (retval < 0) {
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pr_err("Failed to add notify isr");
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return -ENODEV;
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}
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notification_irq = (uint32_t)retval;
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return 0;
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}
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void setup_notification(void)
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{
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uint16_t cpu;
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char name[32] = {0};
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cpu = get_cpu_id();
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if (cpu > 0U) {
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return;
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}
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/* support IPI notification, VM0 will register all CPU */
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snprintf(name, 32, "NOTIFY_ISR%d", cpu);
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if (request_notification_irq(kick_notification, NULL, name) < 0) {
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pr_err("Failed to setup notification");
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return;
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}
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dev_dbg(ACRN_DBG_PTIRQ, "NOTIFY: irq[%d] setup vector %x",
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notification_irq, irq_to_vector(notification_irq));
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}
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static void cleanup_notification(void)
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{
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if (notification_irq != IRQ_INVALID) {
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free_irq(notification_irq);
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}
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notification_irq = IRQ_INVALID;
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}
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