162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __ASM_GENERIC_MSI_H 362306a36Sopenharmony_ci#define __ASM_GENERIC_MSI_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/types.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#ifdef CONFIG_GENERIC_MSI_IRQ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS 1062306a36Sopenharmony_ci# define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2 1162306a36Sopenharmony_ci#endif 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_cistruct msi_desc; 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci/** 1662306a36Sopenharmony_ci * struct msi_alloc_info - Default structure for MSI interrupt allocation. 1762306a36Sopenharmony_ci * @desc: Pointer to msi descriptor 1862306a36Sopenharmony_ci * @hwirq: Associated hw interrupt number in the domain 1962306a36Sopenharmony_ci * @scratchpad: Storage for implementation specific scratch data 2062306a36Sopenharmony_ci * 2162306a36Sopenharmony_ci * Architectures can provide their own implementation by not including 2262306a36Sopenharmony_ci * asm-generic/msi.h into their arch specific header file. 2362306a36Sopenharmony_ci */ 2462306a36Sopenharmony_citypedef struct msi_alloc_info { 2562306a36Sopenharmony_ci struct msi_desc *desc; 2662306a36Sopenharmony_ci irq_hw_number_t hwirq; 2762306a36Sopenharmony_ci unsigned long flags; 2862306a36Sopenharmony_ci union { 2962306a36Sopenharmony_ci unsigned long ul; 3062306a36Sopenharmony_ci void *ptr; 3162306a36Sopenharmony_ci } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS]; 3262306a36Sopenharmony_ci} msi_alloc_info_t; 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci/* Device generating MSIs is proxying for another device */ 3562306a36Sopenharmony_ci#define MSI_ALLOC_FLAGS_PROXY_DEVICE (1UL << 0) 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci#define GENERIC_MSI_DOMAIN_OPS 1 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci#endif /* CONFIG_GENERIC_MSI_IRQ */ 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci#endif 42