Re: [PATCH v8 00/15] ACPI platform MSI support and its example mbigen

[Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>]

Hanjun, Sinan,

On Wed, Jan 18, 2017 at 08:54:50PM +0800, Hanjun Guo wrote:
> From: Hanjun Guo <hanjun.guo@linaro.org>
> 
> With platform msi support landed in the kernel, and the introduction
> of IORT for GICv3 ITS (PCI MSI) and SMMU, the framework for platform msi
> is ready, this patch set add few patches to enable the ACPI platform
> msi support.
> 
> For platform device connecting to ITS on arm platform, we have IORT
> table with the named componant node to describe the mappings of paltform
> device and ITS, so we can retrieve the dev id and find its parent
> irqdomain (ITS) from IORT table (simlar with the ACPI ITS support).

Depending on how things go, I prepared a branch with the first 12
patches (I basically updated some logs and added some cosmetics changes)
for testing (Hanjun please have a look in details since I may have misread
some logs), whether or not I will send a pull request for it we shall see
next week.

Here:

git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux.git acpi/platform-msi

Thanks,
Lorenzo

> v7 -> v8:
> 	- Using _CRS instead of _PRS for Interrupt resources for mbigen
> 
> 	- reshuffle the patch slightly to introduce iort_node_map_platform_id()
> 	  first and then retrieve the dev id for platform MSI, no functional
> 	  change
> 
> 	- Fix the compile error with patch "irqchip: gicv3-its: platform-msi:
> 	  scan MADT to create platform msi domain", which forgot to add 
> 	  <include/acpi_iort.h> (added in later patches in last version).
> 
> 	- renew some commit message which suggested by Lorenzo
> 
> 	- address some othe minor issues which commented by Lorenzo
> 
> 	- Add review and test tag as it's no functional change except
> 	  the last patch of mbigen
> 
> 	- rebase on top of 4.10-rc4 and test it on x86, ia64 and ARM64
> 	  platforms (also with Agustin's patch [1-2/3] "[PATCH V9 0/3] irqchip: qcom:
>           Add IRQ combiner driver" and Lorenzo's patch
>           https://patchwork.kernel.org/patch/9507041/)
> 
> v6 -> v7: 
> 	- Introduce iort_node_map_platform_id() to retrieve the
> 	  dev id for both NC (named component) -> ITS/SMMU and
> 	  NC -> SMMU -> ITS cases, suggested by Lorenzo;
> 
> 	- Reorder the patches and rewrite some commit message;
> 
> 	- Remove the test tags because it has major changes
> 	  to retrieve the dev id, Sinan, Majun, Xinwei, could
> 	  you please test them again on your platform?
> 
> 	- rebased on top of 4.10-rc3 and Lorenzo's patch
>           https://patchwork.kernel.org/patch/9507041/
> 
> 	- Tested against Agustin's patch [1-2/3] "[PATCH V9 0/3] irqchip: qcom:
>           Add IRQ combiner driver"
> 
> v5 -> v6:
>         - Call acpi_configure_pmsi_domain() for platform devices in
>           acpi_platform_notify() as it's cleaner (suggested by Rafael)
>         - Remove the "u8 type" for iort_id_map() because it's unused
>         - Rebase on top of 4.10-rc2
>         - Collect test and review tags
> 
> v4 -> v5:
>         - Add mbigen support back with tested on with Agustin's patchset,
>           and it's a good example of how ACPI platform MSI works
>         - rebased on top of lastest Linus tree (commit 52bce91 splice: reinstate SIGPIPE/EPIPE handling)
> 
> v3 -> v4:
>         - Drop mbi-gen patches to just submit platform msi support because
>           will rebase mbi-gen patches on top of Agustin's patchset, and discusion
>           is going there.
>         - Add a patch to support device topology such as NC(named componant, paltform device)
>           ->SMMU->ITS which suggested by Lorenzo;
>         - rebased on top of Lorenzo's v9 of ACPI IORT ARM SMMU support;
>         - rebased on top of 4.9-rc7
> 
> v2 -> v3:
>         - Drop RFC tag
>         - Rebase against v4.9-rc2 and Lorenzo's v6 of ACPI IORT ARM SMMU support [1]
>         - Add 3 cleanup patches (patch 1, 2, 3)
>         - Drop arch_init call patch from last version
>         - Introduce a callback for platform device to set msi domain
>         - Introduce a new API to get paltform device's domain instead of
>           reusing the PCI one in previous version
>         - Add a patch to rework iort_node_get_id()
> 
> [1]: http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1251993.html
> 
> v1 -> v2:
>         - Fix the bug of if multi Interrupt() resoures in single _PRS,
>           we need to calculate all the irq numbers (I missed it in previous
>           version);
>         - Rebased on Marc's irq/irqchip-4.9 branch and Lorenzo's v5
>           SMMU patches (also Robin's SMMu patches)
>         - Add patch irqchip: mbigen: promote mbigen init.
> 
> Hanjun Guo (13):
>   ACPI: IORT: fix the indentation in iort_scan_node()
>   ACPI: IORT: add missing comment for iort_dev_find_its_id()
>   ACPI: IORT: minor cleanup for iort_match_node_callback()
>   irqchip: gic-v3-its: keep the head file include in alphabetic order
>   irqchip: gicv3-its: platform-msi: refactor its_pmsi_prepare()
>   irqchip: gicv3-its: platform-msi: refactor its_pmsi_init() to prepare
>     for ACPI
>   irqchip: gicv3-its: platform-msi: scan MADT to create platform msi
>     domain
>   ACPI: IORT: rename iort_node_map_rid() to make it generic
>   ACPI: IORT: introduce iort_node_map_platform_id() to retrieve dev id
>   ACPI: platform-msi: retrieve dev id from IORT
>   ACPI: platform: setup MSI domain for ACPI based platform device
>   msi: platform: make platform_msi_create_device_domain() ACPI aware
>   irqchip: mbigen: Add ACPI support
> 
> Kefeng Wang (2):
>   irqchip: mbigen: drop module owner
>   irqchip: mbigen: introduce mbigen_of_create_domain()
> 
>  drivers/acpi/arm64/iort.c                     | 158 +++++++++++++++++++++-----
>  drivers/acpi/glue.c                           |   6 +
>  drivers/base/platform-msi.c                   |   3 +-
>  drivers/irqchip/irq-gic-v3-its-platform-msi.c | 106 +++++++++++++----
>  drivers/irqchip/irq-gic-v3-its.c              |   3 +-
>  drivers/irqchip/irq-mbigen.c                  | 109 +++++++++++++++---
>  include/linux/acpi_iort.h                     |   8 ++
>  7 files changed, 316 insertions(+), 77 deletions(-)
> 
> -- 
> 1.7.12.4
>