From: Wei Huang <wei.huang2@amd.com>
To: <bhelgaas@google.com>
Cc: <linux-pci@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <skhan@linuxfoundation.org>,
<corbet@lwn.net>, <rdunlap@infradead.org>,
<fengchengwen@huawei.com>, <wei.huang2@amd.com>
Subject: [PATCH RFC 0/3] PCI/TPH: Expose CPU-to-Steering Tag mappings via debugfs
Date: Thu, 1 Oct 2026 10:55:48 -0500 [thread overview]
Message-ID: <20261001155551.4182899-1-wei.huang2@amd.com> (raw)
Add reusable per-device PCI debugfs directories and use them to expose
the firmware-provided CPU-to-Steering Tag mapping for each Root Port.
Factor the ACPI _DSM query path for reuse and document the new read-only
interface.
Wei Huang (3):
PCI/TPH: Factor out the ST _DSM evaluation
PCI: Add per-device debugfs directories
Expose the CPU/Steering Tag mapping via debugfs
Documentation/PCI/tph.rst | 32 ++++++
drivers/pci/Makefile | 1 +
drivers/pci/debugfs.c | 60 ++++++++++++
drivers/pci/pci.h | 12 +++
drivers/pci/remove.c | 1 +
drivers/pci/tph.c | 201 ++++++++++++++++++++++++++++++++++----
include/linux/pci.h | 3 +
7 files changed, 290 insertions(+), 20 deletions(-)
create mode 100644 drivers/pci/debugfs.c
--
2.55.0
next reply other threads:[~2026-10-01 15:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 15:55 Wei Huang [this message]
2026-10-01 15:55 ` [PATCH RFC 1/3] PCI/TPH: Factor out the ST _DSM evaluation Wei Huang
2026-10-01 15:55 ` [PATCH RFC 2/3] PCI: Add per-device debugfs directories Wei Huang
2026-10-01 15:55 ` [PATCH RFC 3/3] Expose the CPU/Steering Tag mapping via debugfs Wei Huang
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