diff options
author | 2021-12-10 23:18:55 +0100 | |
---|---|---|
committer | 2021-12-16 22:16:38 +0100 | |
commit | 013bd8e543c2c777b586cf033c588ea82bd502db (patch) | |
tree | f6177388fe82c29084b7319f24818bc704f86d5d /include/linux/msi.h | |
parent | device: Move MSI related data into a struct (diff) | |
download | linux-013bd8e543c2c777b586cf033c588ea82bd502db.tar.gz linux-013bd8e543c2c777b586cf033c588ea82bd502db.tar.bz2 linux-013bd8e543c2c777b586cf033c588ea82bd502db.zip |
device: Add device:: Msi_data pointer and struct msi_device_data
Create struct msi_device_data and add a pointer of that type to struct
dev_msi_info, which is part of struct device. Provide an allocator function
which can be invoked from the MSI interrupt allocation code pathes.
Add a properties field to the data structure as a first member so the
allocation size is not zero bytes. The field will be uses later on.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.676660809@linutronix.de
Diffstat (limited to 'include/linux/msi.h')
-rw-r--r-- | include/linux/msi.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index ba4a39c430b5..7e4c8fd7c65d 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -171,6 +171,16 @@ struct msi_desc { }; }; +/** + * msi_device_data - MSI per device data + * @properties: MSI properties which are interesting to drivers + */ +struct msi_device_data { + unsigned long properties; +}; + +int msi_setup_device_data(struct device *dev); + /* Helpers to hide struct msi_desc implementation details */ #define msi_desc_to_dev(desc) ((desc)->dev) #define dev_to_msi_list(dev) (&(dev)->msi_list) @@ -233,10 +243,16 @@ void pci_msi_mask_irq(struct irq_data *data); void pci_msi_unmask_irq(struct irq_data *data); #ifdef CONFIG_SYSFS +int msi_device_populate_sysfs(struct device *dev); +void msi_device_destroy_sysfs(struct device *dev); + const struct attribute_group **msi_populate_sysfs(struct device *dev); void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_irq_groups); #else +static inline int msi_device_populate_sysfs(struct device *dev) { return 0; } +static inline void msi_device_destroy_sysfs(struct device *dev) { } + static inline const struct attribute_group **msi_populate_sysfs(struct device *dev) { return NULL; @@ -384,6 +400,8 @@ enum { MSI_FLAG_MUST_REACTIVATE = (1 << 5), /* Is level-triggered capable, using two messages */ MSI_FLAG_LEVEL_CAPABLE = (1 << 6), + /* Populate sysfs on alloc() and destroy it on free() */ + MSI_FLAG_DEV_SYSFS = (1 << 7), }; int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask, |