diff options
| author | CLEMENT MATHIEU--DRIF <clement.mathieu--drif@eviden.com> | 2025-05-20 07:18:57 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-06-01 06:38:53 -0400 |
| commit | 5be8cf79188a2a1c73d16f3a8b458d909ac976f4 (patch) | |
| tree | fb5bc68fd3f9880cb24a718462fb890766f56e61 | |
| parent | dcad6cb2abf4ffc4f911041d0547c4b54c2f92e2 (diff) | |
| download | qemu-5be8cf79188a2a1c73d16f3a8b458d909ac976f4.zip qemu-5be8cf79188a2a1c73d16f3a8b458d909ac976f4.tar.gz qemu-5be8cf79188a2a1c73d16f3a8b458d909ac976f4.tar.bz2 | |
pcie: Helper functions to check to check if PRI is enabled
pri_enabled can be used to check whether the capability is present and
enabled on a PCIe device
Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Message-Id: <20250520071823.764266-6-clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/pci/pcie.c | 9 | ||||
| -rw-r--r-- | include/hw/pci/pcie.h | 1 |
2 files changed, 10 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 542172b..eaeb688 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -1266,6 +1266,15 @@ void pcie_pri_init(PCIDevice *dev, uint16_t offset, uint32_t outstanding_pr_cap, dev->exp.pri_cap = offset; } +bool pcie_pri_enabled(const PCIDevice *dev) +{ + if (!pci_is_express(dev) || !dev->exp.pri_cap) { + return false; + } + return (pci_get_word(dev->config + dev->exp.pri_cap + PCI_PRI_CTRL) & + PCI_PRI_CTRL_ENABLE) != 0; +} + bool pcie_pasid_enabled(const PCIDevice *dev) { if (!pci_is_express(dev) || !dev->exp.pasid_cap) { diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 17f06cd..ff6ce08 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -158,6 +158,7 @@ void pcie_pasid_init(PCIDevice *dev, uint16_t offset, uint8_t pasid_width, void pcie_pri_init(PCIDevice *dev, uint16_t offset, uint32_t outstanding_pr_cap, bool prg_response_pasid_req); +bool pcie_pri_enabled(const PCIDevice *dev); bool pcie_pasid_enabled(const PCIDevice *dev); bool pcie_ats_enabled(const PCIDevice *dev); #endif /* QEMU_PCIE_H */ |