53f949254a
msi_init() takes over a BAR without really specifying or allowing specification of how it does so. Instead, let's split it into two interfaces, one fully specified, and one trivially easy. This implements the latter. msix_init_exclusive_bar() takes over allocating and filling a PCI BAR _exclusively_ for the use of MSIX. When used, the matching msi_uninit_exclusive_bar() should be used to tear it down. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
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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#include "pci.h"
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int msix_init(PCIDevice *pdev, unsigned short nentries,
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MemoryRegion *bar,
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unsigned bar_nr, unsigned bar_size);
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int msix_init_exclusive_bar(PCIDevice *dev, unsigned short nentries,
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uint8_t bar_nr);
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void msix_write_config(PCIDevice *dev, uint32_t address, uint32_t val, int len);
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int msix_uninit(PCIDevice *d, MemoryRegion *bar);
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void msix_uninit_exclusive_bar(PCIDevice *dev);
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unsigned int msix_nr_vectors_allocated(const PCIDevice *dev);
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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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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_unuse_all_vectors(PCIDevice *dev);
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void msix_notify(PCIDevice *dev, unsigned vector);
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void msix_reset(PCIDevice *dev);
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int msix_set_vector_notifiers(PCIDevice *dev,
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MSIVectorUseNotifier use_notifier,
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MSIVectorReleaseNotifier release_notifier);
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void msix_unset_vector_notifiers(PCIDevice *dev);
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#endif
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