diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-01-27 21:47:38 +0530 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-02-15 17:55:41 +0100 |
| commit | 9d1c58c8004653b37721dd7b16f4360216778c94 (patch) | |
| tree | fd3c3464037763a12e696d9e36608b1ad405b62e /include/linux/msi.h | |
| parent | 2d566a498d6483ba986dadc496f64a20b032608f (diff) | |
genirq/msi: Optionally use dev->fwnode for device domain
To support wire to MSI domains via the MSI infrastructure it is required to
use the firmware node of the device which implements this for creating the
MSI domain. Otherwise the existing firmware match mechanisms to find the
correct irqdomain for a wired interrupt which is connected to a wire to MSI
bridge would fail.
This cannot be used for the general case because not all devices provide
firmware nodes and all regular per device MSI domains are directly
associated to the device and have not be searched for.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240127161753.114685-11-apatel@ventanamicro.com
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index 24a54248f1ae..36ba6a0852ea 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -552,6 +552,8 @@ enum { MSI_FLAG_ALLOC_SIMPLE_MSI_DESCS = (1 << 5), /* Free MSI descriptors */ MSI_FLAG_FREE_MSI_DESCS = (1 << 6), + /* Use dev->fwnode for MSI device domain creation */ + MSI_FLAG_USE_DEV_FWNODE = (1 << 7), /* Mask for the generic functionality */ MSI_GENERIC_FLAGS_MASK = GENMASK(15, 0), |