From: Clement Mathieu--Drif <clement.mathieu--d...@eviden.com>
pasid_enabled checks whether the capability is
present or not. If so, we read the configuration space to get
the status of the feature (enabled or not).
Signed-off-by: Clement Mathieu--Drif <clement.mathieu--d...@eviden.com>
---
hw/pci/pcie.c | 9 +++++++++
include/hw/pci/pcie.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index f42a256f15..8186d64234 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -1238,3 +1238,12 @@ void pcie_pasid_init(PCIDevice *dev, uint16_t offset,
uint8_t pasid_width,
dev->exp.pasid_cap = offset;
}
+
+bool pcie_pasid_enabled(const PCIDevice *dev)
+{
+ if (!pci_is_express(dev) || !dev->exp.pasid_cap) {
+ return false;
+ }
+ return (pci_get_word(dev->config + dev->exp.pasid_cap + PCI_PASID_CTRL) &
+ PCI_PASID_CTRL_ENABLE) != 0;
+}
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index aa040c3e97..63604ccc6e 100644
--- a/include/hw/pci/pcie.h
+++ b/include/hw/pci/pcie.h
@@ -156,4 +156,6 @@ void pcie_cap_slot_unplug_request_cb(HotplugHandler
*hotplug_dev,
void pcie_pasid_init(PCIDevice *dev, uint16_t offset, uint8_t pasid_width,
bool exec_perm, bool priv_mod);
+
+bool pcie_pasid_enabled(const PCIDevice *dev);
#endif /* QEMU_PCIE_H */
--
2.47.1
