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41 lines
1.0 KiB
41 lines
1.0 KiB
/* 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_DOMAIN |
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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_DOMAIN */ |
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#endif
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