34 lines
1.0 KiB
C
34 lines
1.0 KiB
C
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#ifndef _KERNEL_ARCH_x86_MSI_H
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#define _KERNEL_ARCH_x86_MSI_H
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#include <SupportDefs.h>
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// address register
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#define MSI_ADDRESS_BASE 0xfee00000
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#define MSI_DESTINATION_ID_SHIFT 12
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#define MSI_REDIRECTION 0x00000008
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#define MSI_NO_REDIRECTION 0x00000000
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#define MSI_DESTINATION_MODE_LOGICAL 0x00000004
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#define MSI_DESTINATION_MODE_PHYSICAL 0x00000000
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// data register
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#define MSI_TRIGGER_MODE_EDGE 0x00000000
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#define MSI_TRIGGER_MODE_LEVEL 0x00008000
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#define MSI_LEVEL_DEASSERT 0x00000000
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#define MSI_LEVEL_ASSERT 0x00004000
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#define MSI_DELIVERY_MODE_FIXED 0x00000000
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#define MSI_DELIVERY_MODE_LOWEST_PRIO 0x00000100
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#define MSI_DELIVERY_MODE_SMI 0x00000200
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#define MSI_DELIVERY_MODE_NMI 0x00000400
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#define MSI_DELIVERY_MODE_INIT 0x00000500
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#define MSI_DELIVERY_MODE_EXT_INT 0x00000700
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void msi_init();
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bool msi_supported();
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status_t msi_allocate_vectors(uint8 count, uint8 *startVector,
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uint64 *address, uint16 *data);
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void msi_free_vectors(uint8 count, uint8 startVector);
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#endif // _KERNEL_ARCH_x86_MSI_H
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