d544d75ac9
The pci_ats struct is small and will get smaller, so I don't think it's worth allocating it separately from the pci_dev struct. Embed the ATS fields directly into struct pci_dev. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Joerg Roedel <jroedel@suse.de>
103 lines
1.9 KiB
C
103 lines
1.9 KiB
C
#ifndef LINUX_PCI_ATS_H
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#define LINUX_PCI_ATS_H
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#include <linux/pci.h>
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/* Address Translation Service */
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#ifdef CONFIG_PCI_ATS
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int pci_enable_ats(struct pci_dev *dev, int ps);
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void pci_disable_ats(struct pci_dev *dev);
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int pci_ats_queue_depth(struct pci_dev *dev);
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/**
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* pci_ats_enabled - query the ATS status
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* @dev: the PCI device
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*
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* Returns 1 if ATS capability is enabled, or 0 if not.
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*/
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static inline int pci_ats_enabled(struct pci_dev *dev)
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{
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return dev->ats_cap && dev->ats_enabled;
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}
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#else /* CONFIG_PCI_ATS */
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static inline int pci_enable_ats(struct pci_dev *dev, int ps)
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{
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return -ENODEV;
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}
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static inline void pci_disable_ats(struct pci_dev *dev)
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{
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}
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static inline int pci_ats_queue_depth(struct pci_dev *dev)
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{
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return -ENODEV;
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}
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static inline int pci_ats_enabled(struct pci_dev *dev)
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{
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return 0;
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}
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#endif /* CONFIG_PCI_ATS */
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#ifdef CONFIG_PCI_PRI
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int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
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void pci_disable_pri(struct pci_dev *pdev);
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int pci_reset_pri(struct pci_dev *pdev);
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#else /* CONFIG_PCI_PRI */
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static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
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{
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return -ENODEV;
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}
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static inline void pci_disable_pri(struct pci_dev *pdev)
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{
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}
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static inline int pci_reset_pri(struct pci_dev *pdev)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_PCI_PRI */
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#ifdef CONFIG_PCI_PASID
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int pci_enable_pasid(struct pci_dev *pdev, int features);
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void pci_disable_pasid(struct pci_dev *pdev);
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int pci_pasid_features(struct pci_dev *pdev);
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int pci_max_pasids(struct pci_dev *pdev);
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#else /* CONFIG_PCI_PASID */
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static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
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{
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return -EINVAL;
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}
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static inline void pci_disable_pasid(struct pci_dev *pdev)
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{
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}
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static inline int pci_pasid_features(struct pci_dev *pdev)
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{
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return -EINVAL;
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}
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static inline int pci_max_pasids(struct pci_dev *pdev)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_PCI_PASID */
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#endif /* LINUX_PCI_ATS_H*/
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