Create a API header for MSI specific functions which are relevant to device
drivers.
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
---
include/linux/msi.h | 6 ++++--
include/linux/msi_api.h | 15 +++++++++++++++
2 files changed, 19 insertions(+), 2 deletions(-)
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -13,11 +13,14 @@
*
* Regular device drivers have no business with any of these functions and
* especially storing MSI descriptor pointers in random code is considered
- * abuse. The only function which is relevant for drivers is msi_get_virq().
+ * abuse.
+ *
+ * Device driver relevant functions are available in <linux/msi_api.h>
*/
#include <linux/irqdomain_defs.h>
#include <linux/cpumask.h>
+#include <linux/msi_api.h>
#include <linux/xarray.h>
#include <linux/mutex.h>
#include <linux/list.h>
@@ -188,7 +191,6 @@ struct msi_device_data {
int msi_setup_device_data(struct device *dev);
-unsigned int msi_get_virq(struct device *dev, unsigned int index);
void msi_lock_descs(struct device *dev);
void msi_unlock_descs(struct device *dev);
--- /dev/null
+++ b/include/linux/msi_api.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_MSI_API_H
+#define LINUX_MSI_API_H
+
+/*
+ * APIs which are relevant for device driver code for allocating and
+ * freeing MSI interrupts and querying the associations between
+ * hardware/software MSI indices and the Linux interrupt number.
+ */
+
+struct device;
+
+unsigned int msi_get_virq(struct device *dev, unsigned int index);
+
+#endif
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 6b6941f6653ec8017e3822b55bb9eae245f0ed99
Gitweb: https://git.kernel.org/tip/6b6941f6653ec8017e3822b55bb9eae245f0ed99
Author: Thomas Gleixner <[email protected]>
AuthorDate: Fri, 25 Nov 2022 00:24:14 +01:00
Committer: Thomas Gleixner <[email protected]>
CommitterDate: Mon, 05 Dec 2022 19:20:58 +01:00
genirq/msi: Create msi_api.h
Create a API header for MSI specific functions which are relevant to device
drivers.
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Acked-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
include/linux/msi.h | 6 ++++--
include/linux/msi_api.h | 15 +++++++++++++++
2 files changed, 19 insertions(+), 2 deletions(-)
create mode 100644 include/linux/msi_api.h
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 2d87e00..9f72494 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -13,11 +13,14 @@
*
* Regular device drivers have no business with any of these functions and
* especially storing MSI descriptor pointers in random code is considered
- * abuse. The only function which is relevant for drivers is msi_get_virq().
+ * abuse.
+ *
+ * Device driver relevant functions are available in <linux/msi_api.h>
*/
#include <linux/irqdomain_defs.h>
#include <linux/cpumask.h>
+#include <linux/msi_api.h>
#include <linux/xarray.h>
#include <linux/mutex.h>
#include <linux/list.h>
@@ -188,7 +191,6 @@ struct msi_device_data {
int msi_setup_device_data(struct device *dev);
-unsigned int msi_get_virq(struct device *dev, unsigned int index);
void msi_lock_descs(struct device *dev);
void msi_unlock_descs(struct device *dev);
diff --git a/include/linux/msi_api.h b/include/linux/msi_api.h
new file mode 100644
index 0000000..57d27cf
--- /dev/null
+++ b/include/linux/msi_api.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_MSI_API_H
+#define LINUX_MSI_API_H
+
+/*
+ * APIs which are relevant for device driver code for allocating and
+ * freeing MSI interrupts and querying the associations between
+ * hardware/software MSI indices and the Linux interrupt number.
+ */
+
+struct device;
+
+unsigned int msi_get_virq(struct device *dev, unsigned int index);
+
+#endif