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| author | Jagannathan Raman <jag.raman@oracle.com> | 2022-06-13 16:26:33 -0400 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2022-06-15 16:43:42 +0100 |
| commit | 08cf3dc611991e9697f62458107e13f2c582869a (patch) | |
| tree | 074a48604250f4bef72d3986fdb72a3873b5f28d /hw/pci/msix.c | |
| parent | 3123f93d6b85b69ab77f409456fac8ded895efed (diff) | |
| download | qemu-08cf3dc611991e9697f62458107e13f2c582869a.zip qemu-08cf3dc611991e9697f62458107e13f2c582869a.tar.gz qemu-08cf3dc611991e9697f62458107e13f2c582869a.tar.bz2 | |
vfio-user: handle device interrupts
Forward remote device's interrupts to the guest
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Message-id: 9523479eaafe050677f4de2af5dd0df18c27cfd9.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/pci/msix.c')
| -rw-r--r-- | hw/pci/msix.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/hw/pci/msix.c b/hw/pci/msix.c index ae9331c..1e381a9 100644 --- a/hw/pci/msix.c +++ b/hw/pci/msix.c @@ -31,7 +31,7 @@ #define MSIX_ENABLE_MASK (PCI_MSIX_FLAGS_ENABLE >> 8) #define MSIX_MASKALL_MASK (PCI_MSIX_FLAGS_MASKALL >> 8) -MSIMessage msix_get_message(PCIDevice *dev, unsigned vector) +static MSIMessage msix_prepare_message(PCIDevice *dev, unsigned vector) { uint8_t *table_entry = dev->msix_table + vector * PCI_MSIX_ENTRY_SIZE; MSIMessage msg; @@ -41,6 +41,11 @@ MSIMessage msix_get_message(PCIDevice *dev, unsigned vector) return msg; } +MSIMessage msix_get_message(PCIDevice *dev, unsigned vector) +{ + return dev->msix_prepare_message(dev, vector); +} + /* * Special API for POWER to configure the vectors through * a side channel. Should never be used by devices. @@ -131,6 +136,31 @@ static void msix_handle_mask_update(PCIDevice *dev, int vector, bool was_masked) } } +void msix_set_mask(PCIDevice *dev, int vector, bool mask, Error **errp) +{ + ERRP_GUARD(); + unsigned offset; + bool was_masked; + + if (vector > dev->msix_entries_nr) { + error_setg(errp, "msix: vector %d not allocated. max vector is %d", + vector, dev->msix_entries_nr); + return; + } + + offset = vector * PCI_MSIX_ENTRY_SIZE + PCI_MSIX_ENTRY_VECTOR_CTRL; + + was_masked = msix_is_masked(dev, vector); + + if (mask) { + dev->msix_table[offset] |= PCI_MSIX_ENTRY_CTRL_MASKBIT; + } else { + dev->msix_table[offset] &= ~PCI_MSIX_ENTRY_CTRL_MASKBIT; + } + + msix_handle_mask_update(dev, vector, was_masked); +} + static bool msix_masked(PCIDevice *dev) { return dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] & MSIX_MASKALL_MASK; @@ -344,6 +374,8 @@ int msix_init(struct PCIDevice *dev, unsigned short nentries, "msix-pba", pba_size); memory_region_add_subregion(pba_bar, pba_offset, &dev->msix_pba_mmio); + dev->msix_prepare_message = msix_prepare_message; + return 0; } @@ -429,6 +461,7 @@ void msix_uninit(PCIDevice *dev, MemoryRegion *table_bar, MemoryRegion *pba_bar) g_free(dev->msix_entry_used); dev->msix_entry_used = NULL; dev->cap_present &= ~QEMU_PCI_CAP_MSIX; + dev->msix_prepare_message = NULL; } void msix_uninit_exclusive_bar(PCIDevice *dev) |