From 6b6941f6653ec8017e3822b55bb9eae245f0ed99 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 25 Nov 2022 00:24:14 +0100 Subject: [PATCH] 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 Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Acked-by: Marc Zyngier Link: https://lore.kernel.org/r/20221124230313.632679220@linutronix.de --- 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 2d87e000bd45..9f72494dcc3e 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 */ #include #include +#include #include #include #include @@ -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 000000000000..57d27cfcde2d --- /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 -- 2.34.1