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https://github.com/projectacrn/acrn-hypervisor.git
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df64877c50
Add one more sanity check: If the root port has more than one child, we won't enable PTM on the guest. This is not necessarily an error. We flag it as error just because we don't have this type of hw configuration at development time thus this configuration is not tested. Tracked-On: #5915 Signed-off-by: Rong Liu <rong.l.liu@intel.com> Acked-by: Yu Wang <yu1.wang@intel.com>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Copyright (C) 2021 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#ifndef __PCI_UTIL_H
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#define __PCI_UTIL_H
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#include <stdbool.h>
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#include "pciaccess.h"
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struct pci_device_info {
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bool is_bridge;
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int primary_bus;
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int secondary_bus;
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int subordinate_bus;
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uint16_t bdf;
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struct pci_device_info *parent; /* pointer to its parent bridge */
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struct pci_device_info *clist; /* children list */
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/* cache of all pci devices
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* FIXME: remove PCI_DEVICE_Q. To cleanup pci device cache:
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* remove children, then remove parents
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*/
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TAILQ_ENTRY(pci_device_info) PCI_DEVICE_Q;
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};
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int pci_find_cap(struct pci_device *pdev, const int cap_id);
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int pci_find_ext_cap(struct pci_device *pdev, int cap_id);
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int pci_get_pcie_type(struct pci_device *dev);
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bool is_root_port(struct pci_device *pdev);
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bool is_bridge(struct pci_device *pdev);
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int get_device_count_on_bus(int bus);
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int get_device_count_on_bridge(const struct pci_device_info *bridge_info);
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int scan_pci(void);
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struct pci_device * pci_find_root_port(const struct pci_device *pdev);
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void clean_pci_cache(void);
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#endif
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