[patch V2 00/21] genirq, PCI/MSI: Support for per device MSI and PCI/IMS - Part 2 API rework

From: Thomas Gleixner
Date: Mon Nov 21 2022 - 09:36:50 EST


This is V2 of the second part of effort to provide support for per device
MSI interrupt domains.

Version 1 of this second part can be found here:

https://lore.kernel.org/all/20221111132706.104870257@xxxxxxxxxxxxx

The first part is available here:

https://lore.kernel.org/all/20221111120501.026511281@xxxxxxxxxxxxx

and has been merged into:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core

This part on top of the tip irq/core branch is also available here:

git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git devmsi-v2-part2

This part is the main preparation step for per device MSI domains:

1) Introduce irqdomain pointer storage space in device::msi::data
and related helpers.

2) Convert interfaces to handle multiple per device MSI domains
based on a domain ID

3) Provide new interfaces for allocation/free which are domain ID
based and provide range allocation/free which is a prerequisite
for post MSI-X enable alloc/free.

4) Switch all existing call sites of msi allocation/free interfaces
over to the new interfaces

5) Remove the old interfaces

Changes vs. V1:

- Split the kernel doc changes from the rename (Jason)

- Rename msi_ctrl_valid() to msi_ctrl_range_valid() (Kevin)

- Fix the off by one vs. MSI_MAX_INDEX (Kevin)

- Update changelogs and comments (Bjorn, Jason, Kevin)

- Fix the kernel robot fallout from randconfig builds

- Picked up Reviewed/Acked-by tags where appropriate

Thanks,

tglx
---
arch/x86/kernel/apic/msi.c | 5
drivers/base/platform-msi.c | 4
drivers/bus/fsl-mc/fsl-mc-msi.c | 25 -
drivers/irqchip/irq-gic.c | 4
drivers/pci/msi/irqdomain.c | 4
drivers/pci/msi/msi.c | 4
drivers/soc/ti/ti_sci_inta_msi.c | 12
include/linux/irqdomain.h | 112 ++++----
include/linux/msi.h | 125 +++++++--
include/linux/msi_api.h | 35 ++
kernel/irq/chip.c | 8
kernel/irq/msi.c | 541 +++++++++++++++++++++++++++++----------
12 files changed, 631 insertions(+), 248 deletions(-)