33fbe25496
interrupts (MSI). * Add the remaining IDT entries and redirection functions in the interrupt code. * Make the PIC end_of_interrupt() return a result to indicate whether the vector was handled by this PIC. If it isn't we now issue a apic_end_of_interrupt() in the assumption of apic local interrupt, MSI or IPI. This also removes the need for the gUsingIOAPIC global and doing manual apic_end_of_interrupt() calls in the SMP and timer code. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36221 a95241bf-73f2-0310-859d-f6bbb57e9c96
34 lines
1.0 KiB
C
34 lines
1.0 KiB
C
#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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