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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __ASM_GENERIC_MSI_H3#define __ASM_GENERIC_MSI_H4 5#include <linux/types.h>6 7#ifdef CONFIG_GENERIC_MSI_IRQ8 9#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS10# define NUM_MSI_ALLOC_SCRATCHPAD_REGS 211#endif12 13struct msi_desc;14 15/**16 * struct msi_alloc_info - Default structure for MSI interrupt allocation.17 * @desc: Pointer to msi descriptor18 * @hwirq: Associated hw interrupt number in the domain19 * @scratchpad: Storage for implementation specific scratch data20 *21 * Architectures can provide their own implementation by not including22 * asm-generic/msi.h into their arch specific header file.23 */24typedef struct msi_alloc_info {25 struct msi_desc *desc;26 irq_hw_number_t hwirq;27 unsigned long flags;28 union {29 unsigned long ul;30 void *ptr;31 } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];32} msi_alloc_info_t;33 34/* Device generating MSIs is proxying for another device */35#define MSI_ALLOC_FLAGS_PROXY_DEVICE (1UL << 0)36 37#define GENERIC_MSI_DOMAIN_OPS 138 39#endif /* CONFIG_GENERIC_MSI_IRQ */40 41#endif42