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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
926ff9ad TG |
2 | #ifndef __ASM_GENERIC_MSI_H |
3 | #define __ASM_GENERIC_MSI_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
13e7accb | 7 | #ifdef CONFIG_GENERIC_MSI_IRQ |
8073c1ac | 8 | |
926ff9ad TG |
9 | #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS |
10 | # define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2 | |
11 | #endif | |
12 | ||
13 | struct msi_desc; | |
14 | ||
15 | /** | |
16 | * struct msi_alloc_info - Default structure for MSI interrupt allocation. | |
17 | * @desc: Pointer to msi descriptor | |
18 | * @hwirq: Associated hw interrupt number in the domain | |
19 | * @scratchpad: Storage for implementation specific scratch data | |
20 | * | |
21 | * Architectures can provide their own implementation by not including | |
22 | * asm-generic/msi.h into their arch specific header file. | |
23 | */ | |
24 | typedef struct msi_alloc_info { | |
25 | struct msi_desc *desc; | |
26 | irq_hw_number_t hwirq; | |
91f90daa | 27 | unsigned long flags; |
926ff9ad TG |
28 | union { |
29 | unsigned long ul; | |
30 | void *ptr; | |
31 | } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS]; | |
32 | } msi_alloc_info_t; | |
33 | ||
91f90daa MZ |
34 | /* Device generating MSIs is proxying for another device */ |
35 | #define MSI_ALLOC_FLAGS_PROXY_DEVICE (1UL << 0) | |
36 | ||
926ff9ad TG |
37 | #define GENERIC_MSI_DOMAIN_OPS 1 |
38 | ||
13e7accb | 39 | #endif /* CONFIG_GENERIC_MSI_IRQ */ |
8073c1ac | 40 | |
926ff9ad | 41 | #endif |