[PATCH v3 0/9] PCI: endpoint: Differentiate between disabled and reserved BARs

From: Niklas Cassel <cassel@kernel.org>
To: "Manivannan Sadhasivam" <mani@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Kishon Vijay Abraham I" <kishon@kernel.org>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Vignesh Raghavendra" <vigneshr@ti.com>,
	"Siddharth Vadapalli" <s-vadapalli@ti.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Richard Zhu" <hongxing.zhu@nxp.com>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Frank Li" <Frank.Li@nxp.com>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	"Minghuan Lian" <minghuan.Lian@nxp.com>,
	"Mingkai Hu" <mingkai.hu@nxp.com>, "Roy Zang" <roy.zang@nxp.com>,
	"Jesper Nilsson" <jesper.nilsson@axis.com>,
	"Jingoo Han" <jingoohan1@gmail.com>,
	"Heiko Stuebner" <heiko@sntech.de>,
	"Srikanth Thokala" <srikanth.thokala@intel.com>,
	"Marek Vasut" <marek.vasut+renesas@gmail.com>,
	"Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
	"Geert Uytterhoeven" <geert+renesas@glider.be>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Christian Bruel" <christian.bruel@foss.st.com>,
	"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
	"Alexandre Torgue" <alexandre.torgue@foss.st.com>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Jonathan Hunter" <jonathanh@nvidia.com>,
	"Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
	"Masami Hiramatsu" <mhiramat@kernel.org>,
	"Shuah Khan" <shuah@kernel.org>
Cc: Manikanta Maddireddy <mmaddireddy@nvidia.com>,
	Koichiro Den <den@valinux.co.jp>,
	Damien Le Moal <dlemoal@kernel.org>,
	Niklas Cassel <cassel@kernel.org>,
	linux-pci@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev,
	linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@axis.com,
	linux-rockchip@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-tegra@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH v3 0/9] PCI: endpoint: Differentiate between disabled and reserved BARs
Date: Mon,  2 Mar 2026 10:59:12 +0100	[thread overview]
Message-ID: <20260302095913.48155-11-cassel@kernel.org> (raw)

Hello all,

This series was originally written in response to the patch series from
Manikanta Maddireddy that was posted here:
https://lore.kernel.org/linux-pci/291dab65-3fa6-4fc8-90a2-4ad608ca015c@nvidia.com/T/#t

Manikanta has reviewed V1 and will send a small series on top of this one.

Changes since v2:
-Picked up tags from Frank and Koichiro (thank you)
-Fixed a comment in pcie-dw-rockchip.c to no longer reflect the old
 definition of BAR_RESERVED.

Link to v2:
https://lore.kernel.org/linux-pci/20260225170324.4033466-11-cassel@kernel.org/

Koichiro Den (2):
  PCI: endpoint: Describe reserved subregions within BARs
  PCI: dw-rockchip: Describe RK3588 BAR4 DMA ctrl window

Niklas Cassel (7):
  PCI: endpoint: Introduce pci_epc_bar_type BAR_64BIT_UPPER
  PCI: endpoint: Introduce pci_epc_bar_type BAR_DISABLED
  PCI: dwc: Replace certain BAR_RESERVED with BAR_DISABLED in glue
    drivers
  PCI: dwc: Disable BARs in common code instead of in each glue driver
  PCI: endpoint: pci-epf-test: Advertise reserved BARs
  misc: pci_endpoint_test: Give reserved BARs a distinct error code
  selftests: pci_endpoint: Skip reserved BARs

 drivers/misc/pci_endpoint_test.c              | 21 ++++++++-
 drivers/pci/controller/dwc/pci-dra7xx.c       |  4 --
 drivers/pci/controller/dwc/pci-imx6.c         | 22 +++------
 drivers/pci/controller/dwc/pci-keystone.c     | 12 +++++
 .../pci/controller/dwc/pci-layerscape-ep.c    |  8 +---
 drivers/pci/controller/dwc/pcie-artpec6.c     |  4 --
 .../pci/controller/dwc/pcie-designware-ep.c   | 24 ++++++++++
 .../pci/controller/dwc/pcie-designware-plat.c | 10 -----
 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 23 ++++++----
 drivers/pci/controller/dwc/pcie-keembay.c     |  6 +--
 drivers/pci/controller/dwc/pcie-qcom-ep.c     | 14 +-----
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 16 ++-----
 drivers/pci/controller/dwc/pcie-stm32-ep.c    | 10 -----
 drivers/pci/controller/dwc/pcie-tegra194.c    | 20 +++------
 drivers/pci/controller/dwc/pcie-uniphier-ep.c | 24 +++-------
 drivers/pci/controller/pcie-rcar-ep.c         |  6 +--
 drivers/pci/endpoint/functions/pci-epf-test.c | 24 ++++++++++
 drivers/pci/endpoint/pci-epc-core.c           |  6 ++-
 include/linux/pci-epc.h                       | 45 +++++++++++++++++--
 .../pci_endpoint/pci_endpoint_test.c          |  4 ++
 20 files changed, 175 insertions(+), 128 deletions(-)

base-commit: 36bfc3642b19a98f1302aed4437c331df9b481f0
-- 
2.53.0