02eb84d0ec
Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
35 lines
866 B
C
35 lines
866 B
C
#ifndef QEMU_MSIX_H
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#define QEMU_MSIX_H
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#include "qemu-common.h"
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int msix_init(PCIDevice *pdev, unsigned short nentries,
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unsigned bar_nr, unsigned bar_size);
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void msix_write_config(PCIDevice *pci_dev, uint32_t address,
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uint32_t val, int len);
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void msix_mmio_map(PCIDevice *pci_dev, int region_num,
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uint32_t addr, uint32_t size, int type);
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int msix_uninit(PCIDevice *d);
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void msix_save(PCIDevice *dev, QEMUFile *f);
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void msix_load(PCIDevice *dev, QEMUFile *f);
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int msix_enabled(PCIDevice *dev);
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int msix_present(PCIDevice *dev);
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uint32_t msix_bar_size(PCIDevice *dev);
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int msix_vector_use(PCIDevice *dev, unsigned vector);
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void msix_vector_unuse(PCIDevice *dev, unsigned vector);
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void msix_notify(PCIDevice *dev, unsigned vector);
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void msix_reset(PCIDevice *dev);
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extern int msix_supported;
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#endif
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