linux-kernel - [PATCH 0/3] Add support to handle prefetchable memory

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Date:   Sat, 24 Oct 2020 01:26:52 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>,
        <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>,
        <amurray@...goodpenguin.co.uk>, <robh@...nel.org>,
        <treding@...dia.com>, <jonathanh@...dia.com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kthota@...dia.com>, <mmaddireddy@...dia.com>, <vidyas@...dia.com>,
        <sagar.tv@...il.com>
Subject: [PATCH 0/3] Add support to handle prefetchable memory

This patch series adds support for configuring the DesignWare IP's ATU
region for prefetchable memory translations.
It first starts by flagging a warning if the size of non-prefetchable
aperture goes beyond 32-bit as PCIe spec doesn't allow it.
And then adds required support for programming the ATU to handle higher
(i.e. >4GB) sizes and then finally adds support for differentiating
between prefetchable and non-prefetchable regions and configuring one of
the ATU regions for prefetchable memory translations purpose.

Vidya Sagar (3):
  PCI: of: Warn if non-prefetchable memory aperture size is > 32-bit
  PCI: dwc: Add support to program ATU for >4GB memory aperture sizes
  PCI: dwc: Add support to handle prefetchable memory mapping

 .../pci/controller/dwc/pcie-designware-host.c | 39 ++++++++++++++++---
 drivers/pci/controller/dwc/pcie-designware.c  | 12 +++---
 drivers/pci/controller/dwc/pcie-designware.h  |  4 +-
 drivers/pci/of.c                              |  5 +++
 4 files changed, 48 insertions(+), 12 deletions(-)

-- 
2.17.1