b340cacc1b
My philosophy is unused code is dead code. And dead code is subject to bit
rot and is a likely source of bugs. Use it or lose it.
This reverts parts of c320b976d7 ("PCI: Add implementation for PRI
capability"), removing these interfaces:
pci_pri_enabled()
pci_pri_stopped()
pci_pri_status()
[bhelgaas: split to separate patch]
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Joerg Roedel <joro@8bytes.org>
110 lines
2.1 KiB
C
110 lines
2.1 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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struct pci_ats {
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int pos; /* capability position */
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int stu; /* Smallest Translation Unit */
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int qdep; /* Invalidate Queue Depth */
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int ref_cnt; /* Physical Function reference count */
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unsigned int is_enabled:1; /* Enable bit is set */
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};
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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 && dev->ats->is_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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