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| author | Alex Williamson <alex.williamson@redhat.com> | 2023-05-26 17:15:57 -0600 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2023-07-10 09:52:52 +0200 |
| commit | cf2916f6a1c3e4e9d9907f4c65f8a4634039de40 (patch) | |
| tree | a4baa5eab88cc6eb199c386bb2aba1a50f291575 | |
| parent | 1360b2ad1f673d32a09de5826cd71ecd0510164a (diff) | |
| download | qemu-cf2916f6a1c3e4e9d9907f4c65f8a4634039de40.zip qemu-cf2916f6a1c3e4e9d9907f4c65f8a4634039de40.tar.gz qemu-cf2916f6a1c3e4e9d9907f4c65f8a4634039de40.tar.bz2 | |
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>
| -rw-r--r-- | hw/pci/pcie.c | 7 | ||||
| -rw-r--r-- | include/hw/pci/pcie.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index b8c24cf..b7f107e 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 */ diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 3cc2b15..51ab57b 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); |