From 02eb84d0ec97f183ac23ee939403a139e8849b1d Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 21 Jun 2009 19:49:54 +0300 Subject: 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 Signed-off-by: Anthony Liguori --- hw/msix.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 hw/msix.h (limited to 'hw/msix.h') 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 -- cgit v1.2.3