Subject: [PATCH] PCI: Move ATS declarations to linux/pci.h

From: Krzysztof Wilczynski <[email-masked]>
Date: Fri, 30 Aug 2019 17:07:56 +0200

Move ATS function prototypes from include/linux/pci-ats.h to
include/linux/pci.h so users only need to include <linux/pci.h>:

Realted to PRI capability:

  pci_enable_pri()
  pci_disable_pri()
  pci_restore_pri_state()
  pci_reset_pri()

Related to PASID capability:

  pci_enable_pasid()
  pci_disable_pasid()
  pci_restore_pasid_state()
  pci_pasid_features()
  pci_max_pasids()
  pci_prg_resp_pasid_required()

No functional changes intended.

Signed-off-by: Krzysztof Wilczynski <[email-masked]>
---
 drivers/iommu/amd_iommu.c   |  1 -
 drivers/iommu/arm-smmu-v3.c |  1 -
 drivers/iommu/intel-iommu.c |  1 -
 drivers/iommu/intel-pasid.c |  1 -
 drivers/iommu/intel-svm.c   |  1 -
 drivers/pci/ats.c           |  1 -
 drivers/pci/pci.c           |  1 -
 include/linux/pci-ats.h     | 77 -------------------------------------
 include/linux/pci.h         | 34 ++++++++++++++++
 9 files changed, 34 insertions(+), 84 deletions(-)
 delete mode 100644 include/linux/pci-ats.h

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 04a9f8443344..d43913386915 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -13,7 +13,6 @@
 #include <linux/acpi.h>
 #include <linux/amba/bus.h>
 #include <linux/platform_device.h>
-#include <linux/pci-ats.h>
 #include <linux/bitmap.h>
 #include <linux/slab.h>
 #include <linux/debugfs.h>
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 0ad6d34d1e96..3bd9455efc39 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -29,7 +29,6 @@
 #include <linux/of_iommu.h>
 #include <linux/of_platform.h>
 #include <linux/pci.h>
-#include <linux/pci-ats.h>
 #include <linux/platform_device.h>
 
 #include <linux/amba/bus.h>
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 4658cda6f3d2..362845b5c88a 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -35,7 +35,6 @@
 #include <linux/syscore_ops.h>
 #include <linux/tboot.h>
 #include <linux/dmi.h>
-#include <linux/pci-ats.h>
 #include <linux/memblock.h>
 #include <linux/dma-contiguous.h>
 #include <linux/dma-direct.h>
diff --git a/drivers/iommu/intel-pasid.c b/drivers/iommu/intel-pasid.c
index 040a445be300..f670315afa67 100644
--- a/drivers/iommu/intel-pasid.c
+++ b/drivers/iommu/intel-pasid.c
@@ -16,7 +16,6 @@
 #include <linux/iommu.h>
 #include <linux/memory.h>
 #include <linux/pci.h>
-#include <linux/pci-ats.h>
 #include <linux/spinlock.h>
 
 #include "intel-pasid.h"
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 780de0caafe8..ee9dfc84f925 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -13,7 +13,6 @@
 #include <linux/intel-svm.h>
 #include <linux/rculist.h>
 #include <linux/pci.h>
-#include <linux/pci-ats.h>
 #include <linux/dmar.h>
 #include <linux/interrupt.h>
 #include <linux/mm_types.h>
diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c
index e18499243f84..3f5fb2d4a763 100644
--- a/drivers/pci/ats.c
+++ b/drivers/pci/ats.c
@@ -10,7 +10,6 @@
  */
 
 #include <linux/export.h>
-#include <linux/pci-ats.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f20a3de57d21..c8f2a05e6b37 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -29,7 +29,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/pci_hotplug.h>
 #include <linux/vmalloc.h>
-#include <linux/pci-ats.h>
 #include <asm/setup.h>
 #include <asm/dma.h>
 #include <linux/aer.h>
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
deleted file mode 100644
index 1ebb88e7c184..000000000000
--- a/include/linux/pci-ats.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef LINUX_PCI_ATS_H
-#define LINUX_PCI_ATS_H
-
-#include <linux/pci.h>
-
-#ifdef CONFIG_PCI_PRI
-
-int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
-void pci_disable_pri(struct pci_dev *pdev);
-void pci_restore_pri_state(struct pci_dev *pdev);
-int pci_reset_pri(struct pci_dev *pdev);
-
-#else /* CONFIG_PCI_PRI */
-
-static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
-{
-	return -ENODEV;
-}
-
-static inline void pci_disable_pri(struct pci_dev *pdev)
-{
-}
-
-static inline void pci_restore_pri_state(struct pci_dev *pdev)
-{
-}
-
-static inline int pci_reset_pri(struct pci_dev *pdev)
-{
-	return -ENODEV;
-}
-
-#endif /* CONFIG_PCI_PRI */
-
-#ifdef CONFIG_PCI_PASID
-
-int pci_enable_pasid(struct pci_dev *pdev, int features);
-void pci_disable_pasid(struct pci_dev *pdev);
-void pci_restore_pasid_state(struct pci_dev *pdev);
-int pci_pasid_features(struct pci_dev *pdev);
-int pci_max_pasids(struct pci_dev *pdev);
-int pci_prg_resp_pasid_required(struct pci_dev *pdev);
-
-#else  /* CONFIG_PCI_PASID */
-
-static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
-{
-	return -EINVAL;
-}
-
-static inline void pci_disable_pasid(struct pci_dev *pdev)
-{
-}
-
-static inline void pci_restore_pasid_state(struct pci_dev *pdev)
-{
-}
-
-static inline int pci_pasid_features(struct pci_dev *pdev)
-{
-	return -EINVAL;
-}
-
-static inline int pci_max_pasids(struct pci_dev *pdev)
-{
-	return -EINVAL;
-}
-
-static inline int pci_prg_resp_pasid_required(struct pci_dev *pdev)
-{
-	return 0;
-}
-#endif /* CONFIG_PCI_PASID */
-
-
-#endif /* LINUX_PCI_ATS_H*/
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 463486016290..8ac142801890 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2349,6 +2349,40 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
 void pci_uevent_ers(struct pci_dev *pdev, enum  pci_ers_result err_type);
 #endif
 
+#ifdef CONFIG_PCI_PRI
+int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
+void pci_disable_pri(struct pci_dev *pdev);
+void pci_restore_pri_state(struct pci_dev *pdev);
+int pci_reset_pri(struct pci_dev *pdev);
+#else /* CONFIG_PCI_PRI */
+static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
+{ return -ENODEV; }
+static inline void pci_disable_pri(struct pci_dev *pdev) { }
+static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
+static inline int pci_reset_pri(struct pci_dev *pdev)
+{ return -ENODEV; }
+#endif /* CONFIG_PCI_PRI */
+
+#ifdef CONFIG_PCI_PASID
+int pci_enable_pasid(struct pci_dev *pdev, int features);
+void pci_disable_pasid(struct pci_dev *pdev);
+void pci_restore_pasid_state(struct pci_dev *pdev);
+int pci_pasid_features(struct pci_dev *pdev);
+int pci_max_pasids(struct pci_dev *pdev);
+int pci_prg_resp_pasid_required(struct pci_dev *pdev);
+#else  /* CONFIG_PCI_PASID */
+static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
+{ return -EINVAL; }
+static inline void pci_disable_pasid(struct pci_dev *pdev) { }
+static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
+static inline int pci_pasid_features(struct pci_dev *pdev)
+{ return -EINVAL; }
+static inline int pci_max_pasids(struct pci_dev *pdev)
+{ return -EINVAL; }
+static inline int pci_prg_resp_pasid_required(struct pci_dev *pdev)
+{ return 0; }
+#endif /* CONFIG_PCI_PASID */
+
 /* Provide the legacy pci_dma_* API */
 #include <linux/pci-dma-compat.h>
 
-- 
2.22.1

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