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PCI/ATS: Consolidate ATS declarations in linux/pci-ats.h

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Move ATS function prototypes from include/linux/pci.h to
include/linux/pci-ats.h as the ATS, PRI, and PASID interfaces are related
and are used only by the IOMMU drivers.  This effectively reverts
ff9bee895c ("PCI: Move ATS declarations to linux/pci.h so they're all
together").

Also, remove surplus forward declaration of struct pci_ats from
include/linux/pci.h, as it is no longer needed, since struct pci_ats was
embedded directly into struct pci_dev by d544d75ac9 ("PCI: Embed ATS info
directly into struct pci_dev").

No functional changes intended.

Link: https://lore.kernel.org/r/20190914213032.22314-1-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Krzysztof Wilczynski
2019-09-14 23:30:32 +02:00
committed by Bjorn Helgaas
parent e5adf79a1d
commit b24d5c2098
2 changed files with 28 additions and 61 deletions
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14
include/linux/pci.h
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@@ -284,7 +284,6 @@ struct irq_affinity;
struct pcie_link_state;
struct pci_vpd;
struct pci_sriov;
struct pci_ats;
struct pci_p2pdma;
/* The pci_dev structure describes PCI devices */
@@ -1778,19 +1777,6 @@ pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
NULL);
}
#ifdef CONFIG_PCI_ATS
/* Address Translation Service */
int pci_enable_ats(struct pci_dev *dev, int ps);
void pci_disable_ats(struct pci_dev *dev);
int pci_ats_queue_depth(struct pci_dev *dev);
int pci_ats_page_aligned(struct pci_dev *dev);
#else
static inline int pci_enable_ats(struct pci_dev *d, int ps) { return -ENODEV; }
static inline void pci_disable_ats(struct pci_dev *d) { }
static inline int pci_ats_queue_depth(struct pci_dev *d) { return -ENODEV; }
static inline int pci_ats_page_aligned(struct pci_dev *dev) { return 0; }
#endif
/* Include architecture-dependent settings and functions */
#include <asm/pci.h>