/* 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