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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 | ||
11 | struct 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 | */ | |
22 | typedef 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 |