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