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authorMichael S. Tsirkin <mst@redhat.com>2009-06-21 19:49:54 +0300
committerAnthony Liguori <aliguori@us.ibm.com>2009-06-24 09:09:14 -0500
commit02eb84d0ec97f183ac23ee939403a139e8849b1d (patch)
tree9425e8a576f027b67c5f4b40fdb7762b7c57b753 /hw/msix.h
parentbd4b65ee5e5f750da709ac10c70266876e515c23 (diff)
qemu/pci: MSI-X support functions
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>
Diffstat (limited to 'hw/msix.h')
-rw-r--r--hw/msix.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/hw/msix.h b/hw/msix.h
new file mode 100644
index 000000000..3427778dc
--- /dev/null
+++ b/hw/msix.h
@@ -0,0 +1,34 @@
+#ifndef QEMU_MSIX_H
+#define QEMU_MSIX_H
+
+#include "qemu-common.h"
+
+int msix_init(PCIDevice *pdev, unsigned short nentries,
+ unsigned bar_nr, unsigned bar_size);
+
+void msix_write_config(PCIDevice *pci_dev, uint32_t address,
+ uint32_t val, int len);
+
+void msix_mmio_map(PCIDevice *pci_dev, int region_num,
+ uint32_t addr, uint32_t size, int type);
+
+int msix_uninit(PCIDevice *d);
+
+void msix_save(PCIDevice *dev, QEMUFile *f);
+void msix_load(PCIDevice *dev, QEMUFile *f);
+
+int msix_enabled(PCIDevice *dev);
+int msix_present(PCIDevice *dev);
+
+uint32_t msix_bar_size(PCIDevice *dev);
+
+int msix_vector_use(PCIDevice *dev, unsigned vector);
+void msix_vector_unuse(PCIDevice *dev, unsigned vector);
+
+void msix_notify(PCIDevice *dev, unsigned vector);
+
+void msix_reset(PCIDevice *dev);
+
+extern int msix_supported;
+
+#endif