Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * PCI Endpoint *Function* side MSI header file
4 *
5 * Copyright (C) 2024 NXP
6 * Author: Frank Li <Frank.Li@nxp.com>
7 */
8
9#ifndef __PCI_EP_MSI__
10#define __PCI_EP_MSI__
11
12struct pci_epf;
13
14#ifdef CONFIG_PCI_ENDPOINT_MSI_DOORBELL
15int pci_epf_alloc_doorbell(struct pci_epf *epf, u16 nums);
16void pci_epf_free_doorbell(struct pci_epf *epf);
17#else
18static inline int pci_epf_alloc_doorbell(struct pci_epf *epf, u16 nums)
19{
20 return -ENODATA;
21}
22
23static inline void pci_epf_free_doorbell(struct pci_epf *epf)
24{
25}
26#endif /* CONFIG_GENERIC_MSI_IRQ */
27
28#endif /* __PCI_EP_MSI__ */