From: Alex Williamson <alex.william...@redhat.com>
Report the PCIe capability version for a device
Signed-off-by: Alex Williamson <alex.william...@redhat.com>
Reviewed-by: Cédric Le Goater <c...@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Tested-by: Robin Voetter <ro...@streamhpc.com>
Signed-off-by: Cédric Le Goater <c...@redhat.com>
---
include/hw/pci/pcie.h | 1 +
hw/pci/pcie.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h
index 3cc2b159570f..51ab57bc3c50 100644
--- a/include/hw/pci/pcie.h
+++ b/include/hw/pci/pcie.h
@@ -93,6 +93,7 @@ void pcie_cap_exit(PCIDevice *dev);
int pcie_endpoint_cap_v1_init(PCIDevice *dev, uint8_t offset);
void pcie_cap_v1_exit(PCIDevice *dev);
uint8_t pcie_cap_get_type(const PCIDevice *dev);
+uint8_t pcie_cap_get_version(const PCIDevice *dev);
void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector);
uint8_t pcie_cap_flags_get_vector(PCIDevice *dev);
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index b8c24cf45f7e..b7f107ed8dd4 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 */
--
2.41.0
