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/* 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 GENERIC_MSI_DOMAIN_OPS 1
#endif /* CONFIG_GENERIC_MSI_IRQ */
#endif