linux-kernel - [PATCH 1/3] VFIO V4: export pci_user_{read,write}

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Message-ID: <4c9a728d.LXcJhm9HNv6+1QX/%pugs@cisco.com>
Date:	Wed, 22 Sep 2010 14:18:05 -0700
From:	Tom Lyon <pugs@...co.com>
To:	linux-pci@...r.kernel.org, jbarnes@...tuousgeek.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	randy.dunlap@...cle.com, arnd@...db.de, joro@...tes.org,
	hjk@...utronix.de, avi@...hat.com, gregkh@...e.de,
	chrisw@...s-sol.org, alex.williamson@...hat.com, mst@...hat.com
Subject: [PATCH 1/3] VFIO V4: export pci_user_{read,write}_config


Signed-off-by: Tom Lyon <pugs@...co.com>
---
 drivers/pci/access.c |    6 ++++--
 drivers/pci/pci.h    |    7 -------
 include/linux/pci.h  |    8 ++++++++
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 531bc69..96ed449 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -157,7 +157,8 @@ int pci_user_read_config_##size						\
 	raw_spin_unlock_irq(&pci_lock);				\
 	*val = (type)data;						\
 	return ret;							\
-}
+}									\
+EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
 
 #define PCI_USER_WRITE_CONFIG(size,type)				\
 int pci_user_write_config_##size					\
@@ -171,7 +172,8 @@ int pci_user_write_config_##size					\
 					pos, sizeof(type), val);	\
 	raw_spin_unlock_irq(&pci_lock);				\
 	return ret;							\
-}
+}									\
+EXPORT_SYMBOL_GPL(pci_user_write_config_##size);
 
 PCI_USER_READ_CONFIG(byte, u8)
 PCI_USER_READ_CONFIG(word, u16)
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f8077b3..76c3ed3 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -67,13 +67,6 @@ static inline bool pci_is_bridge(struct pci_dev *pci_dev)
 	return !!(pci_dev->subordinate);
 }
 
-extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
-extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
-extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
-extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
-extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
-extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
-
 struct pci_vpd_ops {
 	ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
 	ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index f26fda7..36eacbf 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -754,6 +754,14 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where,
 	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
 }
 
+/* user-space driven config access */
+extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
+extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
+extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
+extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
+extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
+extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
+
 int __must_check pci_enable_device(struct pci_dev *dev);
 int __must_check pci_enable_device_io(struct pci_dev *dev);
 int __must_check pci_enable_device_mem(struct pci_dev *dev);
-- 
1.6.0.2

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