Commit 6b6941f6 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/msi: Create msi_api.h 



Create a API header for MSI specific functions which are relevant to device
drivers.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Acked-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124230313.632679220@linutronix.de
parent 6a9fc419

include/linux/msi.h

+4 −2
Original line number Diff line number Diff line
@@ -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);

include/linux/msi_api.h

0 → 100644
+15 −0
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/* 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