1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_GENERIC_MSI_H
 3#define __ASM_GENERIC_MSI_H
 4
 5#include <linux/types.h>
 6
 7#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
 8# define NUM_MSI_ALLOC_SCRATCHPAD_REGS	2
 9#endif
10
11struct msi_desc;
12
13/**
14 * struct msi_alloc_info - Default structure for MSI interrupt allocation.
15 * @desc:	Pointer to msi descriptor
16 * @hwirq:	Associated hw interrupt number in the domain
17 * @scratchpad:	Storage for implementation specific scratch data
18 *
19 * Architectures can provide their own implementation by not including
20 * asm-generic/msi.h into their arch specific header file.
21 */
22typedef struct msi_alloc_info {
23	struct msi_desc			*desc;
24	irq_hw_number_t			hwirq;
25	union {
26		unsigned long		ul;
27		void			*ptr;
28	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
29} msi_alloc_info_t;
30
31#define GENERIC_MSI_DOMAIN_OPS		1
32
33#endif