1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_GENERIC_MSI_H
3 #define __ASM_GENERIC_MSI_H
5 #include <linux/types.h>
7 #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
8 # define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2
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
19 * Architectures can provide their own implementation by not including
20 * asm-generic/msi.h into their arch specific header file.
22 typedef struct msi_alloc_info {
23 struct msi_desc *desc;
24 irq_hw_number_t hwirq;
28 } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
31 #define GENERIC_MSI_DOMAIN_OPS 1