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-rw-r--r--include/asm-generic/msi.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-generic/msi.h b/include/asm-generic/msi.h
new file mode 100644
index 000000000000..61c58d8878ce
--- /dev/null
+++ b/include/asm-generic/msi.h
@@ -0,0 +1,32 @@
1#ifndef __ASM_GENERIC_MSI_H
2#define __ASM_GENERIC_MSI_H
3
4#include <linux/types.h>
5
6#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
7# define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2
8#endif
9
10struct msi_desc;
11
12/**
13 * struct msi_alloc_info - Default structure for MSI interrupt allocation.
14 * @desc: Pointer to msi descriptor
15 * @hwirq: Associated hw interrupt number in the domain
16 * @scratchpad: Storage for implementation specific scratch data
17 *
18 * Architectures can provide their own implementation by not including
19 * asm-generic/msi.h into their arch specific header file.
20 */
21typedef struct msi_alloc_info {
22 struct msi_desc *desc;
23 irq_hw_number_t hwirq;
24 union {
25 unsigned long ul;
26 void *ptr;
27 } scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
28} msi_alloc_info_t;
29
30#define GENERIC_MSI_DOMAIN_OPS 1
31
32#endif