/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_GENERIC_MSI_H#define __ASM_GENERIC_MSI_H #include <linux/types.h> #ifdef CONFIG_GENERIC_MSI_IRQ #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS# define NUM_MSI_ALLOC_SCRATCHPAD_REGS	2#endif struct msi_desc; /** * struct msi_alloc_info - Default structure for MSI interrupt allocation. * @desc:	Pointer to msi descriptor * @hwirq:	Associated hw interrupt number in the domain * @scratchpad:	Storage for implementation specific scratch data * * Architectures can provide their own implementation by not including * asm-generic/msi.h into their arch specific header file. */typedef struct msi_alloc_info {	struct msi_desc			*desc;	irq_hw_number_t			hwirq;	unsigned long			flags;	union {		unsigned long		ul;		void			*ptr;	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];} msi_alloc_info_t; /* Device generating MSIs is proxying for another device */#define MSI_ALLOC_FLAGS_PROXY_DEVICE	(1UL << 0)#define MSI_ALLOC_FLAGS_FIXED_MSG_DATA	(1UL << 1) #define GENERIC_MSI_DOMAIN_OPS		1 #endif /* CONFIG_GENERIC_MSI_IRQ */ #endif