include/linux/pci-ats.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef LINUX_PCI_ATS_H
   3 #define LINUX_PCI_ATS_H
   4
   5 #include <linux/pci.h>
   6
   7 #ifdef CONFIG_PCI_ATS
   8 /* Address Translation Service */
   9 bool pci_ats_supported(struct pci_dev *dev);
  10 int pci_enable_ats(struct pci_dev *dev, int ps);
  11 int pci_prepare_ats(struct pci_dev *dev, int ps);
  12 void pci_disable_ats(struct pci_dev *dev);
  13 int pci_ats_queue_depth(struct pci_dev *dev);
  14 int pci_ats_page_aligned(struct pci_dev *dev);
  15 #else /* CONFIG_PCI_ATS */
  16 static inline bool pci_ats_supported(struct pci_dev *d)
  17 { return false; }
  18 static inline int pci_enable_ats(struct pci_dev *d, int ps)
  19 { return -ENODEV; }
  20 static inline int pci_prepare_ats(struct pci_dev *dev, int ps)
  21 { return -ENODEV; }
  22 static inline void pci_disable_ats(struct pci_dev *d) { }
  23 static inline int pci_ats_queue_depth(struct pci_dev *d)
  24 { return -ENODEV; }
  25 static inline int pci_ats_page_aligned(struct pci_dev *dev)
  26 { return 0; }
  27 #endif /* CONFIG_PCI_ATS */
  28
  29 #ifdef CONFIG_PCI_PRI
  30 int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
  31 void pci_disable_pri(struct pci_dev *pdev);
  32 int pci_reset_pri(struct pci_dev *pdev);
  33 int pci_prg_resp_pasid_required(struct pci_dev *pdev);
  34 bool pci_pri_supported(struct pci_dev *pdev);
  35 #else
  36 static inline bool pci_pri_supported(struct pci_dev *pdev)
  37 { return false; }
  38 #endif /* CONFIG_PCI_PRI */
  39
  40 #ifdef CONFIG_PCI_PASID
  41 int pci_enable_pasid(struct pci_dev *pdev, int features);
  42 void pci_disable_pasid(struct pci_dev *pdev);
  43 int pci_pasid_features(struct pci_dev *pdev);
  44 int pci_max_pasids(struct pci_dev *pdev);
  45 #else /* CONFIG_PCI_PASID */
  46 static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
  47 { return -EINVAL; }
  48 static inline void pci_disable_pasid(struct pci_dev *pdev) { }
  49 static inline int pci_pasid_features(struct pci_dev *pdev)
  50 { return -EINVAL; }
  51 static inline int pci_max_pasids(struct pci_dev *pdev)
  52 { return -EINVAL; }
  53 #endif /* CONFIG_PCI_PASID */
  54
  55 #endif /* LINUX_PCI_ATS_H */