From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Thomas Petazzoni To: Bjorn Helgaas , Lorenzo Pieralisi , linux-pci@vger.kernel.org Subject: [PATCH 0/3] PCI: emulated PCI bridge common logic Date: Fri, 29 Jun 2018 11:22:28 +0200 Message-Id: <20180629092231.32207-1-thomas.petazzoni@bootlin.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Russell King , Antoine Tenart , Gregory Clement , Maxime Chevallier , Nadav Haklai , Victor Gu , Thomas Petazzoni , =?UTF-8?q?Miqu=C3=A8l=20Raynal?= , Zachary Zhang , Wilson Ding , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: Hello, The pci-mvebu driver already contains some logic to emulate a root port PCI bridge. It turns out that we have a similar need for the pci-aardvark driver. Instead of duplicating the same logic in two drivers, this patch series starts by adding a small common infrastructure that helps emulate a root port PCI bridge, converts pci-mvebu to use it, and finally extends pci-aardvark to use it as well. Thanks to this, Marvell Armada 3720 based systems, which use the Aarkvark PCI controller, will have better PCI support, by having a root port PCI bridge exposed. The emulated PCI bridge common logic is a proposal, I very much welcome comments and suggestions. Also, if you feel that adding a common logic for only two drivers is too early, I'm fine with duplicating a bit of code betwen pci-mvebu and pci-aardvark. Best regards, Thomas Thomas Petazzoni (2): PCI: Introduce PCI software bridge common logic PCI: mvebu: Convert to PCI software bridge Zachary Zhang (1): PCI: aardvark: Implement emulated root PCI bridge drivers/pci/Kconfig | 3 + drivers/pci/Makefile | 1 + drivers/pci/controller/Kconfig | 2 + drivers/pci/controller/pci-aardvark.c | 119 ++++++++++- drivers/pci/controller/pci-mvebu.c | 370 ++++++++++------------------------ drivers/pci/pci-sw-bridge.c | 149 ++++++++++++++ include/linux/pci-sw-bridge.h | 125 ++++++++++++ 7 files changed, 497 insertions(+), 272 deletions(-) create mode 100644 drivers/pci/pci-sw-bridge.c create mode 100644 include/linux/pci-sw-bridge.h -- 2.14.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.petazzoni@bootlin.com (Thomas Petazzoni) Date: Fri, 29 Jun 2018 11:22:28 +0200 Subject: [PATCH 0/3] PCI: emulated PCI bridge common logic Message-ID: <20180629092231.32207-1-thomas.petazzoni@bootlin.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello, The pci-mvebu driver already contains some logic to emulate a root port PCI bridge. It turns out that we have a similar need for the pci-aardvark driver. Instead of duplicating the same logic in two drivers, this patch series starts by adding a small common infrastructure that helps emulate a root port PCI bridge, converts pci-mvebu to use it, and finally extends pci-aardvark to use it as well. Thanks to this, Marvell Armada 3720 based systems, which use the Aarkvark PCI controller, will have better PCI support, by having a root port PCI bridge exposed. The emulated PCI bridge common logic is a proposal, I very much welcome comments and suggestions. Also, if you feel that adding a common logic for only two drivers is too early, I'm fine with duplicating a bit of code betwen pci-mvebu and pci-aardvark. Best regards, Thomas Thomas Petazzoni (2): PCI: Introduce PCI software bridge common logic PCI: mvebu: Convert to PCI software bridge Zachary Zhang (1): PCI: aardvark: Implement emulated root PCI bridge drivers/pci/Kconfig | 3 + drivers/pci/Makefile | 1 + drivers/pci/controller/Kconfig | 2 + drivers/pci/controller/pci-aardvark.c | 119 ++++++++++- drivers/pci/controller/pci-mvebu.c | 370 ++++++++++------------------------ drivers/pci/pci-sw-bridge.c | 149 ++++++++++++++ include/linux/pci-sw-bridge.h | 125 ++++++++++++ 7 files changed, 497 insertions(+), 272 deletions(-) create mode 100644 drivers/pci/pci-sw-bridge.c create mode 100644 include/linux/pci-sw-bridge.h -- 2.14.4