diff options
| author | Frederic Barrat <fbarrat@linux.ibm.com> | 2022-04-08 15:13:02 +0200 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-04-20 18:00:30 -0300 |
| commit | 2e8656710a3ac6e79d54b18df9f74b30753448cd (patch) | |
| tree | 94be263453f8dc059aff26d01e32989fb57de2f4 /hw/pci | |
| parent | 23bd5fc3ed1a681eb4f1e1308bb2869fb7ca050f (diff) | |
pcie: Don't try triggering a LSI when not defined
This patch skips [de]asserting a LSI interrupt if the device doesn't
have any LSI defined. Doing so would trigger an assert in
pci_irq_handler().
The PCIE root port implementation in qemu requests a LSI (INTA), but a
subclass may want to change that behavior since it's a valid
configuration. For example on the POWER8/POWER9/POWER10 systems, the
root bridge doesn't request any LSI.
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220408131303.147840-2-fbarrat@linux.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pcie.c | 5 | ||||
| -rw-r--r-- | hw/pci/pcie_aer.c | 2 |
2 files changed, 4 insertions, 3 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 67a5d67372..68a62da0b5 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -353,7 +353,7 @@ static void hotplug_event_notify(PCIDevice *dev) msix_notify(dev, pcie_cap_flags_get_vector(dev)); } else if (msi_enabled(dev)) { msi_notify(dev, pcie_cap_flags_get_vector(dev)); - } else { + } else if (pci_intx(dev) != -1) { pci_set_irq(dev, dev->exp.hpev_notified); } } @@ -361,7 +361,8 @@ static void hotplug_event_notify(PCIDevice *dev) static void hotplug_event_clear(PCIDevice *dev) { hotplug_event_update_event_status(dev); - if (!msix_enabled(dev) && !msi_enabled(dev) && !dev->exp.hpev_notified) { + if (!msix_enabled(dev) && !msi_enabled(dev) && pci_intx(dev) != -1 && + !dev->exp.hpev_notified) { pci_irq_deassert(dev); } } diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c index e1a8a88c8c..92bd0530dd 100644 --- a/hw/pci/pcie_aer.c +++ b/hw/pci/pcie_aer.c @@ -290,7 +290,7 @@ static void pcie_aer_root_notify(PCIDevice *dev) msix_notify(dev, pcie_aer_root_get_vector(dev)); } else if (msi_enabled(dev)) { msi_notify(dev, pcie_aer_root_get_vector(dev)); - } else { + } else if (pci_intx(dev) != -1) { pci_irq_assert(dev); } } |