From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F60B274B3B; Wed, 25 Feb 2026 17:03:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772039033; cv=none; b=DOf+92TNjOe7oSLUuEL1uRcBBoq6b3yOwf4DOjyC7X05Eij6yBSwVuQWPcziOOJQe2FaaeLuKcxmZCTXZ8GttYKAsJ/dHePlB8KGf+ukHRymECBNMmbq21HfaRjc753Q3nThqpmLZeDvJ2VzCb68CH5i/AzQsMTtH2IGNt26HPo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772039033; c=relaxed/simple; bh=dHsr+tHFlCnPRl24N4jA2w27y8fJLi3JtyQervzLoTQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=uQpwtsWkrSMiJx7UEZ7rMvMKVpHwkJKSqM1i11jsWDcWzZFqEujZHx9UExFCQrWnmYq/ScMwrQ7/d5sIxDt/J11yAJj39yludIDwBZaI98sQ9s9tvd4U6cGJEm9u6B3XOMFaxWpC1NTXFhesfRa8YWJFEps29L3LZBdpDV4OyG8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XD1ozh1S; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XD1ozh1S" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A24FBC116D0; Wed, 25 Feb 2026 17:03:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772039033; bh=dHsr+tHFlCnPRl24N4jA2w27y8fJLi3JtyQervzLoTQ=; h=From:To:Cc:Subject:Date:From; b=XD1ozh1SBNkGjQqCe22FFfFv2+gNvPm+I1u1m6ZhzTUDqGpLTv2Fu/wbGHD02fBVU XkGSy7vfsi+9gp45XYK/2MWbz2etIJ3aW9cGxmnam+HNf8z2+fKZZ4Hg9JNPDy5uVo JZ9vqgsKdRVcR25jm3QOkTrCPkI9hWJJM7XsXuHn+jgBRHqMHwwM/7qr3DfGocYGQH +U3BcG/S1rHQFbyzH87U+PYRVhhEGLykjSr8HQP3gB3P2XN1LKuVukI9YFIf8qR4jF 5+TJYcjly/VB9//ZEWQQaFRsDdUNfXknBSm4FMQa7BYhhKYVEGeb4rEo0LrJY+cYjc LpH7w9lZea3SA== From: Niklas Cassel To: Manivannan Sadhasivam , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Arnd Bergmann , Greg Kroah-Hartman , Vignesh Raghavendra , Siddharth Vadapalli , Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Richard Zhu , Lucas Stach , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Minghuan Lian , Mingkai Hu , Roy Zang , Jesper Nilsson , Jingoo Han , Heiko Stuebner , Srikanth Thokala , Marek Vasut , Yoshihiro Shimoda , Geert Uytterhoeven , Magnus Damm , Christian Bruel , Maxime Coquelin , Alexandre Torgue , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masami Hiramatsu , Shuah Khan Cc: Manikanta Maddireddy , Koichiro Den , Damien Le Moal , Niklas Cassel , 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 v2 0/9] PCI: endpoint: Differentiate between disabled and reserved BARs Date: Wed, 25 Feb 2026 18:03:23 +0100 Message-ID: <20260225170324.4033466-11-cassel@kernel.org> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2520; i=cassel@kernel.org; h=from:subject; bh=dHsr+tHFlCnPRl24N4jA2w27y8fJLi3JtyQervzLoTQ=; b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGDLna8dsbxV8dXNj3bUlHarWmRVfz39m+h2yu0tNyOvyR u3tYde8OkpZGMS4GGTFFFl8f7jsL+52n3Jc8Y4NzBxWJpAhDFycAjCRlpkM/xSbLh6yCFXUrWnR 0Tsc9j7zY5+nwJY/i2tKpgqqhDyxmMvwv8g/WuGMyGxLHe6jOaotEnufVLNGPAhjSJpx4oKM2/8 sfgA= X-Developer-Key: i=cassel@kernel.org; a=openpgp; fpr=5ADE635C0E631CBBD5BE065A352FE6582ED9B5DA Content-Transfer-Encoding: 8bit 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 v1: -Rebased on latest pci/endpoint branch -Picked up tags -Fixed review comments from Frank and Manikanta (thank you) -Simplified function bar_is_reserved() Link to v1: https://lore.kernel.org/linux-pci/20260217212707.2450423-11-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 | 19 +++++--- 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, 174 insertions(+), 125 deletions(-) base-commit: 8eaff52fc101c1f6b3215db93bba02c815155806 -- 2.53.0