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pcie: Add a way to get the outstanding page request allocation (pri) from the config space.

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Signed-off-by: Clement Mathieu--Drif <clement.mathieu--drif@eviden.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20250901111630.1018573-2-clement.mathieu--drif@eviden.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
CLEMENT MATHIEU--DRIF 2025-09-01 11:17:19 +00:00 • committed by Michael S. Tsirkin
parent fa82ce2dde
commit ec450d185e
2 changed files with 9 additions and 0 deletions
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8
hw/pci/pcie.c
View file

@ -1266,6 +1266,14 @@ void pcie_pri_init(PCIDevice *dev, uint16_t offset, uint32_t outstanding_pr_cap,
dev->exp.pri_cap = offset;
}
uint32_t pcie_pri_get_req_alloc(const PCIDevice *dev)
{
if (!pcie_pri_enabled(dev)) {
return 0;
}
return pci_get_long(dev->config + dev->exp.pri_cap + PCI_PRI_ALLOC_REQ);
}
bool pcie_pri_enabled(const PCIDevice *dev)
{
if (!pci_is_express(dev) || !dev->exp.pri_cap) {

1
include/hw/pci/pcie.h
View file

@ -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);
uint32_t pcie_pri_get_req_alloc(const PCIDevice *dev);
bool pcie_pri_enabled(const PCIDevice *dev);
bool pcie_pasid_enabled(const PCIDevice *dev);
bool pcie_ats_enabled(const PCIDevice *dev);