1 files changed, 1 insertions, 142 deletions

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 42fae4776515..b82c155d7b37 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -11,6 +11,7 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/mutex.h>
+#include <linux/export.h>
 #include <linux/string.h>
 #include <linux/delay.h>
 #include <linux/pci-ats.h>
@@ -722,145 +723,3 @@ int pci_num_vf(struct pci_dev *dev)
 		return dev->sriov->nr_virtfn;
 }
 EXPORT_SYMBOL_GPL(pci_num_vf);
-
-static int ats_alloc_one(struct pci_dev *dev, int ps)
-{
-	int pos;
-	u16 cap;
-	struct pci_ats *ats;
-
-	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ATS);
-	if (!pos)
-		return -ENODEV;
-
-	ats = kzalloc(sizeof(*ats), GFP_KERNEL);
-	if (!ats)
-		return -ENOMEM;
-
-	ats->pos = pos;
-	ats->stu = ps;
-	pci_read_config_word(dev, pos + PCI_ATS_CAP, &cap);
-	ats->qdep = PCI_ATS_CAP_QDEP(cap) ? PCI_ATS_CAP_QDEP(cap) :
-					    PCI_ATS_MAX_QDEP;
-	dev->ats = ats;
-
-	return 0;
-}
-
-static void ats_free_one(struct pci_dev *dev)
-{
-	kfree(dev->ats);
-	dev->ats = NULL;
-}
-
-/**
- * pci_enable_ats - enable the ATS capability
- * @dev: the PCI device
- * @ps: the IOMMU page shift
- *
- * Returns 0 on success, or negative on failure.
- */
-int pci_enable_ats(struct pci_dev *dev, int ps)
-{
-	int rc;
-	u16 ctrl;
-
-	BUG_ON(dev->ats && dev->ats->is_enabled);
-
-	if (ps < PCI_ATS_MIN_STU)
-		return -EINVAL;
-
-	if (dev->is_physfn || dev->is_virtfn) {
-		struct pci_dev *pdev = dev->is_physfn ? dev : dev->physfn;
-
-		mutex_lock(&pdev->sriov->lock);
-		if (pdev->ats)
-			rc = pdev->ats->stu == ps ? 0 : -EINVAL;
-		else
-			rc = ats_alloc_one(pdev, ps);
-
-		if (!rc)
-			pdev->ats->ref_cnt++;
-		mutex_unlock(&pdev->sriov->lock);
-		if (rc)
-			return rc;
-	}
-
-	if (!dev->is_physfn) {
-		rc = ats_alloc_one(dev, ps);
-		if (rc)
-			return rc;
-	}
-
-	ctrl = PCI_ATS_CTRL_ENABLE;
-	if (!dev->is_virtfn)
-		ctrl |= PCI_ATS_CTRL_STU(ps - PCI_ATS_MIN_STU);
-	pci_write_config_word(dev, dev->ats->pos + PCI_ATS_CTRL, ctrl);
-
-	dev->ats->is_enabled = 1;
-
-	return 0;
-}
-
-/**
- * pci_disable_ats - disable the ATS capability
- * @dev: the PCI device
- */
-void pci_disable_ats(struct pci_dev *dev)
-{
-	u16 ctrl;
-
-	BUG_ON(!dev->ats || !dev->ats->is_enabled);
-
-	pci_read_config_word(dev, dev->ats->pos + PCI_ATS_CTRL, &ctrl);
-	ctrl &= ~PCI_ATS_CTRL_ENABLE;
-	pci_write_config_word(dev, dev->ats->pos + PCI_ATS_CTRL, ctrl);
-
-	dev->ats->is_enabled = 0;
-
-	if (dev->is_physfn || dev->is_virtfn) {
-		struct pci_dev *pdev = dev->is_physfn ? dev : dev->physfn;
-
-		mutex_lock(&pdev->sriov->lock);
-		pdev->ats->ref_cnt--;
-		if (!pdev->ats->ref_cnt)
-			ats_free_one(pdev);
-		mutex_unlock(&pdev->sriov->lock);
-	}
-
-	if (!dev->is_physfn)
-		ats_free_one(dev);
-}
-
-/**
- * pci_ats_queue_depth - query the ATS Invalidate Queue Depth
- * @dev: the PCI device
- *
- * Returns the queue depth on success, or negative on failure.
- *
- * The ATS spec uses 0 in the Invalidate Queue Depth field to
- * indicate that the function can accept 32 Invalidate Request.
- * But here we use the `real' values (i.e. 1~32) for the Queue
- * Depth; and 0 indicates the function shares the Queue with
- * other functions (doesn't exclusively own a Queue).
- */
-int pci_ats_queue_depth(struct pci_dev *dev)
-{
-	int pos;
-	u16 cap;
-
-	if (dev->is_virtfn)
-		return 0;
-
-	if (dev->ats)
-		return dev->ats->qdep;
-
-	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ATS);
-	if (!pos)
-		return -ENODEV;
-
-	pci_read_config_word(dev, pos + PCI_ATS_CAP, &cap);
-
-	return PCI_ATS_CAP_QDEP(cap) ? PCI_ATS_CAP_QDEP(cap) :
-				       PCI_ATS_MAX_QDEP;
-}