From: Bibo Mao <maobibo@loongson.cn>
To: Huacai Chen <chenhuacai@kernel.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>,
Pawel Chmielewski <pawel.chmielewski@intel.com>
Cc: Len Brown <lenb@kernel.org>,
linux-kernel@vger.kernel.org, loongarch@lists.linux.dev,
linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev,
lixianglai@loongson.cn
Subject: [PATCH v4 0/4] ACPI: LoongArch: Add IOVT table support
Date: Tue, 22 Sep 2026 20:10:54 +0800 [thread overview]
Message-ID: <20260922121058.972734-1-maobibo@loongson.cn> (raw)
I/O Virtualization Table is ACPI table for LoongArch IOMMU devices, it
is merged on ACPI Spec 6.6, and it can be located at
https://www.loongson.cn/uploads/images/2024110517404135188.LoongArch-IO-Virtualization-Table-Specification.pdf
Here add IOVT table parsing on LoongArch system, it is for LoongArch
IOMMU driver use in future.
---
v3 ... v4:
1. Move kernel option ACPI_IOVT from patch 4 to patch 2.
2. Move function call with iovt_iommu_configure_id() before function
viot_iommu_configure() in acpi_iommu_configure_id().
3. Rename LoongArch with LOONGARCH like other architecture in file
MAINTAINERS.
4. Set Huacai as one of Maintainers.
v2 ... v3:
1. Add separate patch with header file include/linux/acpi_iovt.h,
after it is merged in acpica tree.
2. Modify patch set since macro name is changed in acpi_iovt.h
3. Merge patch 1 and patch 2 together.
v1 ... v2:
1. Reorganize the patch, patch 1/4 are merged, patch 3/5/6 are merged,
add patch 2/8 are merged together.
2. Enrich error printk information in iovt_get_pci_iommu_fwnode().
---
Bibo Mao (4):
ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT
IOMMU structure
ACPI: LoongArch: Add acpi_arch_[late]_init()
ACPI: scan: Add support for LoongArch in acpi_iommu_configure_id()
MAINTAINERS: Add entry for drivers/acpi/loongarch
MAINTAINERS | 9 +
arch/loongarch/Kconfig | 1 +
drivers/acpi/Kconfig | 4 +
drivers/acpi/Makefile | 2 +-
drivers/acpi/bus.c | 2 +
drivers/acpi/loongarch/Kconfig | 7 +
drivers/acpi/loongarch/Makefile | 3 +
drivers/acpi/loongarch/init.c | 16 ++
drivers/acpi/loongarch/init.h | 5 +
drivers/acpi/loongarch/iovt.c | 280 ++++++++++++++++++++++++++++++++
drivers/acpi/scan.c | 3 +
include/acpi/actbl2.h | 7 +
include/linux/acpi.h | 1 +
include/linux/acpi_iovt.h | 13 ++
14 files changed, 352 insertions(+), 1 deletion(-)
create mode 100644 drivers/acpi/loongarch/Kconfig
create mode 100644 drivers/acpi/loongarch/Makefile
create mode 100644 drivers/acpi/loongarch/init.c
create mode 100644 drivers/acpi/loongarch/init.h
create mode 100644 drivers/acpi/loongarch/iovt.c
create mode 100644 include/linux/acpi_iovt.h
base-commit: 93f51579e7df248780214094418f205253383cc5
--
2.39.3
next reply other threads:[~2026-09-22 12:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 12:10 Bibo Mao [this message]
2026-09-22 12:10 ` [PATCH v4 1/4] ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT IOMMU structure Bibo Mao
2026-09-22 12:10 ` [PATCH v4 2/4] ACPI: LoongArch: Add acpi_arch_[late]_init() Bibo Mao
2026-09-22 12:10 ` [PATCH v4 3/4] ACPI: scan: Add support for LoongArch in acpi_iommu_configure_id() Bibo Mao
2026-09-22 12:10 ` [PATCH v4 4/4] MAINTAINERS: Add entry for drivers/acpi/loongarch Bibo Mao
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