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authorAlex Williamson <alex.williamson@redhat.com>2023-05-26 17:15:57 -0600
committerCédric Le Goater <clg@redhat.com>2023-07-10 09:52:52 +0200
commitcf2916f6a1c3e4e9d9907f4c65f8a4634039de40 (patch)
treea4baa5eab88cc6eb199c386bb2aba1a50f291575 /hw/pci/pcie.c
parent1360b2ad1f673d32a09de5826cd71ecd0510164a (diff)
pcie: Add a PCIe capability version helper
Report the PCIe capability version for a device Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Robin Voetter <robin@streamhpc.com> Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'hw/pci/pcie.c')
-rw-r--r--hw/pci/pcie.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index b8c24cf45f..b7f107ed8d 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -274,6 +274,13 @@ uint8_t pcie_cap_get_type(const PCIDevice *dev)
PCI_EXP_FLAGS_TYPE) >> PCI_EXP_FLAGS_TYPE_SHIFT;
}
+uint8_t pcie_cap_get_version(const PCIDevice *dev)
+{
+ uint32_t pos = dev->exp.exp_cap;
+ assert(pos > 0);
+ return pci_get_word(dev->config + pos + PCI_EXP_FLAGS) & PCI_EXP_FLAGS_VERS;
+}
+
/* MSI/MSI-X */
/* pci express interrupt message number */
/* 7.8.2 PCI Express Capabilities Register: Interrupt Message Number */