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[PATCH 0/7] Add support for R-Car Gen4 PCI host controller
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Mon, 24 Feb 2025 09:18:23 +0000
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- Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 24 Feb 2025 09:18:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHbhp0NQBdW76R7SUWOEr9t9KgJjA==
- Thread-topic: [PATCH 0/7] Add support for R-Car Gen4 PCI host controller
This series adds support for R-Car Gen4 PCI host controller.
To fully support the controller, the following changes were made:
- Generic mechanism to support PCI child buses is added.
- Private data for PCI host bridge and means to access it are added.
The series also includes a workaround for proper ATU propramming and
optimizations to lessen the performance impact of that workaround.
The series was tested both as a part of the pci-passthrough patches[1] and
standalone on S4 and V4H boards.
[1] https://github.com/Deedone/xen/tree/pci_passthrough_wip
Oleksandr Andrushchenko (4):
xen/arm: allow PCI host bridge to have private data
xen/arm: make pci_host_common_probe return the bridge
xen/arm: add support for PCI child bus
xen/arm: add support for R-Car Gen4 PCI host controller
Volodymyr Babchuk (3):
xen/arm: rcar4: add delay after programming ATU
xen/arm: rcar4: add simple optimization to avoid ATU reprogramming
xen/arm: rcar4: program ATU to accesses to all functions
xen/arch/arm/include/asm/pci.h | 16 +-
xen/arch/arm/pci/Makefile | 1 +
xen/arch/arm/pci/ecam.c | 17 +-
xen/arch/arm/pci/pci-access.c | 37 +-
xen/arch/arm/pci/pci-host-common.c | 106 +++++-
xen/arch/arm/pci/pci-host-generic.c | 2 +-
xen/arch/arm/pci/pci-host-rcar4.c | 542 ++++++++++++++++++++++++++++
xen/arch/arm/pci/pci-host-zynqmp.c | 2 +-
xen/arch/arm/vpci.c | 91 ++++-
9 files changed, 764 insertions(+), 50 deletions(-)
create mode 100644 xen/arch/arm/pci/pci-host-rcar4.c
--
2.34.1
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