| 1 |
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| 2 | #ifndef __ASM_GENERIC_MSI_H
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| 3 | #define __ASM_GENERIC_MSI_H
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| 4 |
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| 5 | #include <linux/types.h>
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| 6 |
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| 7 | #ifdef CONFIG_GENERIC_MSI_IRQ
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| 8 |
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| 9 | #ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
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| 10 | # define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2
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| 11 | #endif
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| 12 |
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| 13 | struct msi_desc;
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| 14 |
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| 15 | |
| 16 | * struct msi_alloc_info - Default structure for MSI interrupt allocation.
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| 17 | * @desc: Pointer to msi descriptor
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| 18 | * @hwirq: Associated hw interrupt number in the domain
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| 19 | * @scratchpad: Storage for implementation specific scratch data
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| 20 | *
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| 21 | * Architectures can provide their own implementation by not including
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| 22 | * asm-generic/msi.h into their arch specific header file.
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| 23 |
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| 24 | typedef struct msi_alloc_info {
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| 25 | struct msi_desc *desc;
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| 26 | irq_hw_number_t hwirq;
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| 27 | unsigned long flags;
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| 28 | union {
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| 29 | unsigned long ul;
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| 30 | void *ptr;
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| 31 | } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
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| 32 | } msi_alloc_info_t;
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| 33 |
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| 34 |
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| 35 | #define MSI_ALLOC_FLAGS_PROXY_DEVICE (1UL << 0)
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| 36 | #define MSI_ALLOC_FLAGS_FIXED_MSG_DATA (1UL << 1)
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| 37 |
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| 38 | #define GENERIC_MSI_DOMAIN_OPS 1
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| 39 |
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| 40 | #endif
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| 41 |
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| 42 | #endif
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