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| author |   Michael S. Tsirkin <mst@redhat.com> | 2009-11-25 11:41:48 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2009-12-01 17:59:54 +0200 |
| commit | ae1be0bbc127a9a6289873efdb7cb22c57d81a9d (patch) | |
| tree | e8ab49c2a6668f98eae7d54af0544d47002194e5 /hw/msix.c | |
| parent | virtio: do not reset msix state on soft reset (diff) | |
| download | qemu-kvm-ae1be0bbc127a9a6289873efdb7cb22c57d81a9d.tar.gz qemu-kvm-ae1be0bbc127a9a6289873efdb7cb22c57d81a9d.tar.bz2 qemu-kvm-ae1be0bbc127a9a6289873efdb7cb22c57d81a9d.zip | |
msix: fix mask bit state after reset
PCI spec states that mask bit must be 1 after reset.
Make it so.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/msix.c')
| -rw-r--r-- | hw/msix.c | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -217,6 +217,15 @@ void msix_mmio_map(PCIDevice *d, int region_num, d->msix_mmio_index); } +static void msix_mask_all(struct PCIDevice *dev, unsigned nentries) +{ + int vector; + for (vector = 0; vector < nentries; ++vector) { + unsigned offset = vector * MSIX_ENTRY_SIZE + MSIX_VECTOR_CTRL; + dev->msix_table_page[offset] |= MSIX_VECTOR_MASK; + } +} + /* Initialize the MSI-X structures. Note: if MSI-X is supported, BAR size is * modified, it should be retrieved with msix_bar_size. */ int msix_init(struct PCIDevice *dev, unsigned short nentries, @@ -234,6 +243,7 @@ int msix_init(struct PCIDevice *dev, unsigned short nentries, sizeof *dev->msix_entry_used); dev->msix_table_page = qemu_mallocz(MSIX_PAGE_SIZE); + msix_mask_all(dev, nentries); dev->msix_mmio_index = cpu_register_io_memory(msix_mmio_read, msix_mmio_write, dev); @@ -353,6 +363,7 @@ void msix_reset(PCIDevice *dev) msix_free_irq_entries(dev); dev->config[dev->msix_cap + MSIX_ENABLE_OFFSET] &= MSIX_ENABLE_MASK; memset(dev->msix_table_page, 0, MSIX_PAGE_SIZE); + msix_mask_all(dev, dev->msix_entries_nr); } /* PCI spec suggests that devices make it possible for software to configure |